Log in

Relevant bibliographies by topics / Polyurethane fiber / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Polyurethane fiber.

Dissertations / Theses on the topic 'Polyurethane fiber'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Polyurethane fiber.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Haber, Zachary. "ON THE USE OF POLYURETHANE MATRIX CARBON FIBER COMPOSITES FOR STRENGTHENING CONCRETE STRUCTURES." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4105.

Full text

Abstract:

Fiber-reinforced polymer (FRP) composite materials have effectively been used in numerous reinforced concrete civil infrastructure strengthening projects. Although a significant body of knowledge has been established for epoxy matrix carbon FRPs and epoxy adhesives, there is still a need to investigate other matrices and adhesive types. One such matrix/adhesive type yet to be heavily researched for infrastructure application is polyurethane. This thesis investigates use of polyurethane matrix carbon fiber composites for strengthening reinforced concrete civil infrastructure. Investigations on

APA, Harvard, Vancouver, ISO, and other styles

2

O'Sickey, Matthew J. "Characterization of Structure-Property Relationships of Poly(urethane-urea)s for Fiber Applications." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26792.

Full text

Abstract:

Poly(urethane)s and poly(urethane-urea)s (PUU) are nearly ubiquitous, having been in existence since before the Second World War. Spandex, a poly(urethane-urea) elastomeric fiber, is found in nearly all articles of apparel as well as in an increasing array of other consumer items. The technology and chemistry of spandex is largely unchanged since its inception in the late 1950s, with the majority of spandex employing poly(tetramethylene ether glycol) as soft segments. Recent developments in catalyst technology have resulted in the production of ultra-low monol content poly(propylene glycol) (P

APA, Harvard, Vancouver, ISO, and other styles

3

Bahrami, Saeid. "Design, Fabrication and Evaluation of Polyurethane/Gelatin Fiber/Hydrogel Scaffolds for Tendon Tissue Engineering." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS032.pdf.

Full text

Abstract:

Les tendons et les ligaments sont des composants essentiels du système musculo-squelettique liant les os aux muscles et les os entre eux, respectivement. En raison de leur nature à supporter des charges lourdes, ces structures sont susceptibles d’être endommagées. Dans le cas d’une blessure tendineuse ou ligamentaire, les traitements actuels proposés tels que la suture, les autogreffes, les allogreffes, et les xénogreffes ou encore les prothèses ne sont à ce jour pas optimum. En effet, le taux de morbidité, le peu de disponibilité de greffons, le risque de récidive, la faible réussite des gref

APA, Harvard, Vancouver, ISO, and other styles

4

Spagnuolo, Michael. "Fabrication and Degradation of Electrospun Scaffolds from L-Tyrosine Based Polyurethane Blends for Tissue Engineering Applications." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1304538022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Johnson, Cara. "Characterization of Impact Damage and Fiber Reinforced Polymer Repair Systems for Metallic Utility Poles." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5651.

Full text

Abstract:

Previous studies have demonstrated that the behavior of ber reinforced polymers (FRPs) bonded to metallic utility poles are governed by the following failure modes; yielding of the metallic substrate, FRP tensile rupture, FRP compressive buckling, and debonding of FRP from the substrate. Therefore, an in situ method can be devised for the repair of utility poles, light poles, and mast arms that returns the poles to their original service strength. This thesis investigates the e ect of damage due to vehicular impact on metallic poles, and the e ectiveness of externally-bonded FRP repair

APA, Harvard, Vancouver, ISO, and other styles

6

Surano, Dominic E. "The Effectiveness of Damage Arrestment Devices in Delaying Fastener-Hole Interaction Failures in Carbon Fiber Polyurethane Foam Composite Sandwich Panels Subjected to Static and Dynamic Loading Under Increased Temperatures." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/436.

Full text

Abstract:

A study was conducted to investigate simple, cost-effective manufacturing techniques to delay skin-core delamination, micro-buckling and bearing stress failures resulting from fastener-hole interactions. Composite sandwich panels, with and without damage arrestment devices (DADs), were subjected to monotonic compression at a rate of 5mm per second, and compression-compression fatigue at 50% yield at an amplitude of 65%, under temperatures of 75, 100, 125, 150, 175, and 200 °F. The sandwiches tested were composed of two-layer cross-weave carbon fiber facesheets, a polyurethane foam core, and an

APA, Harvard, Vancouver, ISO, and other styles

7

Garbin, Daniel Fernando. "Efeito do material da face nas propriedades mecânicas de painéis sanduíche para aplicação rodoviária." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/157831.

Full text

Abstract:

Painéis sanduíche são largamente utilizadas em diversas aplicações de engenharia e o estudo de suas propriedades é fundamental para a ampliação de sua utilização. Neste trabalho, foram estudados painéis sanduíche com núcleo de poliuretano e faces de fibra de vidro fabricados pelo processo de laminação contínua. Na primeira configuração, as faces do painel foram fabricadas com manta de fibra de vidro e resina poliéster, com 39% de teor de vidro em massa e espessura de 1,9 mm. Na segunda configuração, as faces do painel foram fabricadas com tecido de fibra de vidro e resina poliéster, com 54% de

APA, Harvard, Vancouver, ISO, and other styles

8

Neira, Dorivalda Santos Medeiros. "Desenvolvimento de um comp?sito de espuma r?gida de poliuretana de mamona e fibras de sisal para isola??o t?rmica." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15573.

Full text

Abstract:

Made available in DSpace on 2014-12-17T14:57:50Z (GMT). No. of bitstreams: 1 DorivaldaSMN_TESE.pdf: 6484052 bytes, checksum: e7f59e3b4e8445fc73cfec52837209f2 (MD5) Previous issue date: 2011-03-24<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>The search for sustainable technologies that can contribute to reduce energy consumption is a great challenge in the field of insulation materials. In this context, composites manufactured from vegetal sources are an alternative technology. The principal objectives of this work are the development and characterization of a composite

APA, Harvard, Vancouver, ISO, and other styles

9

Abeysinghe, Mudiyanselage Chanaka Madushan Abeysinghe. "Static and dynamic performance of lightweight hybrid composite floor plate system." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60323/1/Chanaka_Abeysinghe_Mudiyanselage_Thesis.pdf.

Full text

Abstract:

In the modern built environment, building construction and demolition consume a large amount of energy and emits greenhouse gasses due to widely used conventional construction materials such as reinforced and composite concrete. These materials consume high amount of natural resources and possess high embodied energy. More energy is required to recycle or reuse such materials at the cessation of use. Therefore, it is very important to use recyclable or reusable new materials in building construction in order to conserve natural resources and reduce the energy and emissions associated with conv

APA, Harvard, Vancouver, ISO, and other styles

10

Abidin, Mohd Hanafiah Bin. "Fatigue behaviour of glass fibre reinforced polyurethane acrylate." Thesis, Swansea University, 2002. https://cronfa.swan.ac.uk/Record/cronfa42552.

Full text

Abstract:

A comprehensive study of the fatigue behaviour of a polyurethane acrylate resin and glass fibre reinforced composites has been undertaken. In the first part, three types of resins were tested: polyurethane vinyl ester, polyester and polyurethane acrylate, which was formulated to have superior properties. Three different types of glass fibre cloth were used for reinforcement, a woven roving and two novel stitch bonded Ulticloths. The [0/90]2s and [+/-45]2s lay-ups were prepared in order to investigate the effects of matrix, cloths and lay-up on fatigue strength and life time. Polyurethane acryl

APA, Harvard, Vancouver, ISO, and other styles

11

Pigg, W. "The fibre reinforcement of low density rigid polyurethane foam." Thesis, Manchester Metropolitan University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372751.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Oliveira, Robson Morijo de. "Compósito de poliuretano elastomérico reforçado com fibra de juta: estudo das propriedades dinâmico-mecânicas e viscoelásticas." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/1188.

Full text

Abstract:

Made available in DSpace on 2016-06-02T19:19:58Z (GMT). No. of bitstreams: 1 OLIVEIRA_Robson_2013.pdf: 4428066 bytes, checksum: aefeb43146df9afeba619c532fb8d2f6 (MD5) Previous issue date: 2013-09-13<br>Composite technology of a polymer matrix reinforced with artificial fibers, like fiberglass, Kevlar, carbon, etc., has become specialty in recent times moved by advances in technology in some sectors such as automotive and aerospace. The composites already have come a long way in replacing conventional materials like metals and Woods. However with the goal to reduce costs and provide a sustain

APA, Harvard, Vancouver, ISO, and other styles

13

Coda, Ryan. "A Study of Cellulose Based Biodegradable Foams and Sponges." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6961.

Full text

Abstract:

Environmental concerns have brought about a push to replace non-biodegradable products that are made from non-renewable resources. Investigations regarding use of wood fibers and other biomass as a raw material for biodegradable foams and sponges are an example of such a replacement. Foams made at least partially of biomass can be created using cellulose from wood fibers once the cellulose is converted into a fluid form. Polyurethane foams can be made from polyols containing as much as 50% biomass by combined dissolution of wood and starch. Sponges can be made completely from cellulose regener

APA, Harvard, Vancouver, ISO, and other styles

14

Baldan, Victor José dos Santos. "Desenvolvimento e caracterização de placas poliméricas produzidas a partir da reciclagem do resíduo industrial de poliuretana termofixa." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/102/102131/tde-30062016-102309/.

Full text

Abstract:

Os compósitos são materiais formados por duas fases de diferentes propriedades químicas e físicas, sendo uma matriz e um reforço, que apresentam alta rigidez, melhores respostas à fadiga sob cargas cíclicas, leveza e resistência mecânica, o que os torna viáveis para substituir materiais nobres e de custo elevado, com diversas aplicações na aeronáutica, nos esportes, na indústria bélica e principalmente na construção civil. Além disso, os compósitos podem ser obtidos a partir da incorporação de resíduos em sua composição, solucionando problemas como o descarte irregular. Com o intuito de contri

APA, Harvard, Vancouver, ISO, and other styles

15

Atiénzar, Navarro Roberto. "Estudio, modelado y caracterización acústica de nuevas soluciones en base a tejidos textiles." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/166795.

Full text

Abstract:

[ES] En este trabajo de Tesis se han llevado a cabo cuatro líneas de investigación a fin de analizar el comportamiento acústico de nuevas soluciones basadas en tejidos textiles procedentes de la industria textil, a partir de modificaciones o combinaciones estructurales de los mismos. En esta Tesis se ha estudiado la estructura de la fibra textil a partir del análisis de los parámetros macroestructurales de la fibra, como la finura, la longitud, y la sección transversal. Además, se ha investigado el grado de influencia de estos parámetros sobre la absorción acústica. Se pudo evidenciar que l

APA, Harvard, Vancouver, ISO, and other styles

16

Unal, Serkan. "Synthesis and Characterization of Branched Macromolecules for High Performance Elastomers, Fibers, and Films." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29783.

Full text

Abstract:

An A2 + B3 polymerization for the synthesis of hyperbranched polymers was altered using oligomeric precursors in place of either one or both of the monomer pairs to synthesize highly branched macromolecules. Unique topologies that are intermediates between long-chain branched and hyperbranched structures were obtained and the term "highly branched" was used to define these novel architectures. Various types of highly branched polymers, such as polyurethanes, poly(urethane urea)s, poly(ether ester)s, and poly(arylene ether)s were synthesized using the oligomeric A2 + B3 strategy. The molar m

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Ning. "Electrospun membranes for implantable glucose biosensors." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/8718.

Full text

Abstract:

The goal for this thesis was to apply electrospun biomimetic coatings on implantable glucose biosensors and test their efficacy as mass-transport limiting and tissue engineering membranes, with special focus on achieving reliable and long sensing life-time for biosensors when implanted in the body. The 3D structure of electrospun membranes provides the unique combination of extensively interconnected pores, large pore volumes and mechanical strength, which are anticipated to improving sensor sensitivity. Their structure also mimics the 3D architecture of natural extracellular matrix (ECM), whi

APA, Harvard, Vancouver, ISO, and other styles

18

Silva, Rosana Vilarim da. "Compósito de resina poliuretano derivada de óleo de mamona e fibras vegetais." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-29082003-105440/.

Full text

Abstract:

O novo paradigma de se preservar o meio ambiente e de se utilizar produtos naturais vem contribuindo para um maior interesse na utilização de materiais derivados da biomassa. Neste sentido, os compósitos poliméricos com fibras vegetais surgem como uma boa alternativa no campo dos materiais para aplicações de engenharia. Os principais objetivos deste trabalho foram o processamento e a caracterização do compósito formado por uma resina poliuretano derivada do óleo de mamona e fibras de sisal e coco. O processamento foi realizado utilizando-se a técnica de moldagem por compressão. As fibras foram

APA, Harvard, Vancouver, ISO, and other styles

19

Silva, Sergio Augusto Mello da. "Chapa de media densidade (MDF) fabricada com poliuretana mono-componente derivada de oleo de mamona - caracterização por metodo destrutivo e por ultra-som." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257201.

Full text

Abstract:

Orientador: Raquel Gonçalves<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-06T00:21:33Z (GMT). No. of bitstreams: 1 Silva_SergioAugustoMelloda_D.pdf: 3060293 bytes, checksum: 3514c54e017be522e62c07231642a540 (MD5) Previous issue date: 2003<br>Resumo: As tecnologias para produção das chapas denominadas ¿Medium Density Fiberboard¿ (MDF), confeccionadas com fibras de madeiras de reflorestamento de baixo custo e resinas fenólicas provenientes de uréia, representam para vários setores industriais uma possibilidade

APA, Harvard, Vancouver, ISO, and other styles

20

Sousa, Lauren Karoline de. "Produção e caracterização mecânica de compósitos de resina poliuretana à base de óleo de mamona e fibras de rami, sisal e bucha vegetal." Universidade Federal de Uberlândia, 2013. https://repositorio.ufu.br/handle/123456789/14190.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In recent years the research on new materials for application in construction had intensified in order to rationalize the manpower in the sector. Thereat, many studies are being conducted with the goal of developing composites for use in construction. The use of composites as wall panels is sustainable when the materials used are biodegradable. The objective of this research is produce and characterize polymeric composites using a castor oil polyurethane matrix reinforced with ramie, sisal and sponge gourd fibers. The composites we

APA, Harvard, Vancouver, ISO, and other styles

21

Tetteh, Gifty. "Polyurethane-based scaffolds for bone tissue engineering : the role of hydroxyapatite particles, solvent combinations, electrospun fibre orientations, in vivo & in vitro characterisation, and particulate leached foams for creating 3-D bone models." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/16015/.

Full text

Abstract:

While small bone defects heal spontaneously, critical size defects may exceed the body’s regenerative capabilities, and require the use of bone substitutes and implants. To date, in vitro and in vivo testing of implants remains the gold standard for rigorous mechanical stability and biological safety checks. Current 2D in vitro testing is limited by a lack of dynamic environment and an inability to investigate mechanical strength of the attachment between the bone-matrix and implant surface. 3D in vivo tests are also limited by differences in the behaviour and structure of human and animal cel

APA, Harvard, Vancouver, ISO, and other styles

22

Oliveira, Fernando de. "Lignopoliuretanos: preparação, caracterização e aplicação em compósitos de sisal." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-25022015-082454/.

Full text

Abstract:

A valorização racional da lignina e seus derivados é um dos maiores desafios ligado às biorrefinarias em que estas macromoléculas são geradas como subprodutos. Os lignossulfonatos, obtidos através do processo de polpação sulfito da madeira, são produzidos em larga escala e pouco utilizados como reagentes na preparação de compostos macromoleculares. A presença de grupos OH em sua estrutura permite o seu uso como macromonômero na obtenção de poliuretanos (PUs). O presente estudo teve como meta a obtenção de lignopoliuretanos e de compósitos baseados principalmente em matérias primas obtidas a pa

APA, Harvard, Vancouver, ISO, and other styles

23

Vasco, Marina Cardozo. "Efeito da radiação gama sobre as propriedades mecânicas de compósito de fibras de sisal/poliuretana sem uso de agentes de acoplamento." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/1067.

Full text

Abstract:

Compósitos de fibras naturais com matriz polimérica tem sido foco de estudos por possuírem boas propriedades mecânicas e baixo peso, o que permite sua utilização em diversos meios, incluindo ambientes hospitalares, salas de radioterapia e radiodiagnóstico. Sua grande dificuldade é a falta de afinidade dos materiais componentes, causando distanciamento da interface e baixa transferência de carga entre a matriz e o reforço. Uma alternativa podem ser os compósitos à base de fibras naturais e poliuretana derivada do óleo de mamona. A incidência de radiação pode levar à degradação do material polim

APA, Harvard, Vancouver, ISO, and other styles

24

LIU, JUN-TIAN, and 劉俊田. "Sugarcane Fiber/Polyether-type Polyurethane Composites." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m88584.

Full text

Abstract:

碩士<br>國立宜蘭大學<br>化學工程與材料工程學系碩士班<br>106<br>In this study, the common agricultural waste - sugarcane fiber and polyether-polyurethane (PPG) were blended to prepare a composite, and polyether polyol (PPG700, PPG1000, PPG2000) and isocyanate (MDI) were used to prepare polyurethane. The prepolymer, and then the linear PU (PPG), the low cross-linked PU (PPG), and the highly cross-linked PU(PPG), based on the ratio of the chain extender (1,4-butanediol, trimethylolpropane). A sugarcane fiber/polypropylene (PPG) composite was prepared by adding different proportions of sugarcane fiber reinforcing mater

APA, Harvard, Vancouver, ISO, and other styles

25

Lin, Shih-Pin, and 林士斌. "Research of UHMWPE Fiber Reinforced Polyurethane Modified Epoxy Composites." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/88927397301721501830.

Full text

Abstract:

博士<br>國立臺灣大學<br>高分子科學與工程學研究所<br>95<br>The aim of this research is to prepare a series of UHMWPE fiber (Ultra-high molecular weight polyethylene fiber) reinforced PU (Polyurethane) modified DGEBA (Epoxy resin) composites composed of the matrices based on PU and Epoxy resin with the reinforcement by neat, plasma treated and chemical agent modified UHMWPE fibers. The UHMWPE fiber/PU-crosslinked DGEBA composites and the UHMWPE fiber/PU/DGEBA grafted-IPNs composites were manufactured by filament winding and hot-press molding and cutting to various testing specimens with hydraulic power cutting mach

APA, Harvard, Vancouver, ISO, and other styles

26

Zhong, Rong Sheng, and 鍾鎔聲. "A study of melt spinning thermoplastic polyurethane elastic fiber." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/30474168089350636253.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Sheng, Chung Rong, and 鍾鎔聲. "A study of melt spinning thermoplastic polyurethane elastic fiber." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/92713102573392278894.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>纖維工程技術系<br>82<br>In this study, the synthesis of different composition of thermoplastic polyurethane was carried out by one shot process useing 4,4-diphenylmethane diisocyanate(MDI), 1,4-butane diol (1,4-BD) and poly butylene adipate(PBA) or polytetramethylene glycol(PTMG). Elastic fibers were spun by melt spinning with different composition.Single filament tests were performed to investigated the mechanic properties of elastic fiber.Through the tests,it was found that if

APA, Harvard, Vancouver, ISO, and other styles

28

LI, SHI-TENG, and 李士騰. "Glass fiber reinforced polyurethane / epoxy graft interpenetrating polymer networks." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/25473227132164137855.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Liu, Yen-Chen, and 劉彥呈. "Research on the fiber reinforced water dispersion polyurethane composites." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/13202961926642074749.

Full text

Abstract:

碩士<br>中國文化大學<br>材料科學與奈米科技研究所<br>98<br>The aim of this Research is to prepare the WD-PU (water polyurethane) and fiber composites for improving the mechanical properties of the WD-PU/Glass fiber and WD-PU/Glass-Carbon fiber composites.The WD-PU/Glass fiber composites and WD-PU/ Glass-Carbon fiber composites were prepared by filament winding. This research presents a proprietary filament winding process developed to manufacture WD-PU prepreg . Based on the investigation of the pot life to the resin, the reactivity of the resin and fiber wet-out, it was found that WD-PU shows excellent processa

APA, Harvard, Vancouver, ISO, and other styles

30

Lin, Shih-Pin. "Research of UHMWPE Fiber Reinforced Polyurethane Modified Epoxy Composites." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2306200711205900.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Huang, Chun-Ming, and 黃春鳴. "Preparation and Characterization of Biodegradable Polyurethane Fiber Mats by Electrospinning." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/54758714934350637631.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>102<br>Biodegradable oligomer, hydroxyl terminate poly (propylene fumarate) (PPF), was polymerized from Di-(2-hydroxypropyl) fumarate (DHPF) via transesterification, and DHPF was synthesized from propylene glycol and fumaryl chloride. Biodrgradable Polyurethane-PPF (Bio-PU-PPF) was synthesized from PPF with 4,4-methylenediphenyl diisocyanate (MDI) via functional group polymerization. Subsequently, a series of Biodegradable Polyurethane hybrid fibers were fabricated that using Bio-PU-PPF blended with Polyurethane-PCL (PU-PCL) and Polyurethane-PEG (PU-PEG) b

APA, Harvard, Vancouver, ISO, and other styles

32

Huang, Yun-Shao, and 黃雲紹. "Manufacing Aligned Polyurethane Hollow Fiber Membrane by Electrospinning and it’s Spinnability." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39876785645571282605.

Full text

Abstract:

碩士<br>萬能科技大學<br>材料科技研究所<br>99<br>Polyurethane hollow fiber membranes with directional arrangement were prepared by electrospinning in this study. The spinning solutions of shell and core were polyurethane (PU) and polyethylene oxide, respectively. Both solutions through coaxial spinneret were manufactured into conjugated fibers by high voltage which made solutions to destroy their surface tension. The conjugated fibers membranes were collected by rotary collector and formed axial alignment. Therefore, the conjugated fibers were cut into 5 cm length and put in ultrasonic shock sink in order to

APA, Harvard, Vancouver, ISO, and other styles

33

chuang, fu-sheng, and 莊富盛. "The Study on Synthesis of Polyurethane-imide Copolymers and Fiber Formation Property." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/53708179245843103494.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

顏俊成. "Research on pultrusion of glass fiber reinforced blocked polyurethane modified epoxy resins." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/70490001963271276713.

Full text

Abstract:

碩士<br>中國文化大學<br>材料科學與製造研究所<br>87<br>ABSTRACT The reserch present a proprietary process developed to manufacture pultruded blocked polyurethane modified epoxy resin composites in order to improve the impact strength of pultruded epoxy composites. The effect of processing parameters on the mechanical properties of pultruded glass fiber reinforced epoxy/blocked PU composites has been studied. Processing parameters include die temperature, pulling rate, postcure temperature and time, filler type and content, and fiber content. From the viscosity test, the optimum temperature of impregna

APA, Harvard, Vancouver, ISO, and other styles

35

HUANG, MING-XUN, and 黃明勳. "Study of glass fiber reinforced polyurethane/unsaturated polyester graft interpentrating polymer networks." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/35703677473993674327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Goang, Dong Yuan, and 鄺東元. "Research on The Pultrusion of Fiber Reinforced Polyurethane /Furfuryl Alcohol Interpenetrating Polymer Networks." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/42094757422462236765.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Kuang, Dong-Yuan, and 鄺東元. "Research on The Pultrusion of Fiber Reinforced Polyurethane /Furfuryl Alcohol Interpenetrating Polymer Networks." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/06785734092771136087.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

CHEN, SHI-CHONG, and 陳世崇. "Research on the pultrusion of gless fiber reinforced polyurethane modified furfuryl alcohol composites." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/91191054619202167724.

Full text

Abstract:

碩士<br>中國文化大學<br>材料科學與製造研究所<br>90<br>This research presents a proprietary pultrued process developed to manufacture blocked polyurethane / furfuryl alcohol composites. From the investigation of the pot life to the resin, the reactivity of the resin and fiber wet-out, it was found that blocked polyurethane / furfuryl alcohol shows excellent processability for composites. The effect of processing parameters on the mechanical properties of pultruded glass fiber reinforced blocked polyurethane / furfuryl alcohol composites has been studied. The processing parameters investigated included die temper

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Yung-Jih, and 王勇日. "Research on the pultrusion of glass fiber reinforced blocked polyurethane modified vinyl ester composites." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/64486560405042938786.

Full text

Abstract:

碩士<br>中國文化大學<br>材料科學與製造研究所<br>89<br>This research presents a proprietary pultrued process developed to manufacture blocked polyurethane / vinyl ester composites. Based on the investigation of the pot life to the resin, the reactivity of the resin and fiber wet-out, it was found that blocked polyurethane / vinyl ester shows excellent processability for composites. The effect of processing parameters on the mechanical properties of pultruded glass fiber reinforced blocked polyurethane / vinyl ester composites has been studied. The processing parameters investigated included die temperature, bloc

APA, Harvard, Vancouver, ISO, and other styles

40

陳誌堅. "A Study of Thermoplastic Polyurethane elastic fiber on spinning physical properties and photochromic performance." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/45727118898301540048.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>纖維及高分子工程技術研究所<br>83<br>The application of Thermoplastic Elastomer (TPE) has developed in recent years. The TPEs have both of rubber and plastic at the same character, and they can be made into the materials with different hardness by demand. This is the reason that they are welcome in polymer industry. 　　The TPEs are commonly classified in 5 series, (1) TPAE (Polyamide series), (2)TPEE (Polyester series), (3) TPO(Olefin series), (4) TPS (Styrene series), (5) TPU (Urethane series). In this study, the thermoplastic polyurethane (TPU) was used. It was synthesized to become prepo

APA, Harvard, Vancouver, ISO, and other styles

41

Jhih-Yu-Yang and 楊智宇. "Study on the processability of vacuum assisted resin transfer molding for fiber reinforced polyurethane." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/86780194093883763449.

Full text

Abstract:

碩士<br>國立勤益科技大學<br>化工與材料工程系<br>103<br>In this study, we had investigated the reactivity, rheological and processing parameter of several polyurethane(UM、UB、UH) and an epoxy(EP) resin first. From the results of analysis, we had chosen the formula which can use in vacuum assisted resin transfer molding (VARTM) process suitably, as well as evaluated the effect of vacuum pressure (50.5 kPa、76 kPa、101.3 kPa) on the performance. Then prepared the PU composites with different fiber (CF、GF) by VARTM process to analyze the effect of mechanical properties and thermal properties, and finally observed the

APA, Harvard, Vancouver, ISO, and other styles

42

LAI, YAN-RONG, and 賴彥榮. "Study of Mechanical Properties on Ultrafine Fiber Knitted Fabric Using Modification of Water-based Polyurethane Process." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/59jk9z.

Full text

Abstract:

碩士<br>逢甲大學<br>纖維與複合材料學系<br>105<br>In this study, two different aliphatic isocyanates were used as the synthesis of aqueous polymer, m-TMXDI [1,3-bis (2-isocyanatopropan-2-yl) benzene] and IPDI [5-isocyanate- (Methyl isocyanato) -1,3,3-trimethylcyclohexane] were synthesized in different proportions and analyzed by FTIR, GPC, viscometer, TGA, followed by re-synthesis The aliphatic waterborne polyurethane is processed with different formulations and ultrafine fiber knitted fabrics to evaluate its properties, including contact angle、SEM、abrasion resistance、absorption rate、weight gain rate、tensile

APA, Harvard, Vancouver, ISO, and other styles

43

陳景祥. "Research on the Pultrusion of Fiber Reinforced Poly(methyl methacrylate), Polyurethane and Their Interpenetrating Polymer Network Composites." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/04946942438043785807.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

jyh-horng, wu, and 吳志宏. "A Study on the IPN, Miscibility and Anti-Vibration Performance of Kevlar fiber reinforced Silicone Rubber/Polyurethane/Epoxy Blends." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/26752174253099185692.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>纖維及高分子工程系<br>89<br>The high damping materials is a good solution for sonic isolation and antivibration products. Although we find out the rubbers and elastomers have the energy absorbed performance, but the stiffness is still not enough. In this study, we try to find the stiffner high damping elastomer. Using Kevlar fiber reinforced silicone base composites, the infuence of the Vf, fiber orientation and process condition on energy absortion performance were evaluated. The experimental will suggest the design and applaction guidance for antivibration industrisl products.

APA, Harvard, Vancouver, ISO, and other styles

45

YEN, HUI-TING, and 顏暉庭. "Thermoplastic Polyurethane Hot Melt Adhesive Synthe-sized by Using 2-HEA as Terminal Agent for Seamless Bonding of Nylon Fiber Fabric." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3q6h78.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>106<br>This study uses 2-hydroxyethyl acrylate (2-HEA) as terminal agent, and introduces terminal concept into thermoplastic polyu-rethane (TPU) hot melt adhesive, applied to seamless bonding of nylon fiber fabric. It aims to solve the high processing temperature of general TPU hot melt adhesive, and the degumming and poor adhesion resulted from colloid contraction after ultraviolet (UV) curing of acrylic polyurethane adhesive. Thereby achieving zero solvent, low temperature bonding and quick production. This study comprises 2-HEA terminal agent synthesized TPU ho

APA, Harvard, Vancouver, ISO, and other styles

46

Кучеренко, Єлизавета Володимирівна. "Розробка технології одержання високоеластичних волокнистих матеріалів із вторинної сировини". Diss., 2020. https://er.knutd.edu.ua/handle/123456789/17858.

Full text

Abstract:

Дисертацію присвячено актуальній проблемі розширення асортименту нетканих матеріалів із суміші хімічних волокон для виробів різного призначення, зокрема для одержання високоеластичних матеріалів для теплоізоляції об’єктів складної геометричної форми.<br>The dissertation is devoted to the relevant problem of expanding the range of nonwovens from a mixture of chemical fibers for products of different purposes, in particular for obtaining highly elastic materials for thermal insulation of objects with complex geometric shape.

APA, Harvard, Vancouver, ISO, and other styles

47

Gao, Long-Jang, and 高隆強. "Studies on the Properties of the Electroactive Polyurethane and its Electrospun Fibers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/20317865391836222296.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>101<br>The Hydroxy-Capped Aniline Pentamer (AN5) was preliminarily synthesized from 4-(phenylamino)phenol (PAP) and p-phenylenediamine (PDA) by oxidative coupling polymerization. Electroactive polyurethane (PUAN5) was synthesized from AN5 with 4,4-diphenylmethane diisocyanate (MDI) via functional group polymerization. Subsequently, the two different types of PUAN5 were prepared by doped with hydrochloric acid (HCl) and Dodecylbenzenesulfonic acid (DBSA). A series of nanofibers were fabricated that using different PUAN5 precursors blend with Thermoplastic p

APA, Harvard, Vancouver, ISO, and other styles

48

Tseng, Yu-Kai, and 曾榆凱. "Molecular Arrangement and Physical Properties of Polyurethane-urea/Cellulose Blend Electrospun Fibers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/76587m.

Full text

Abstract:

碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>107<br>Polymer blend is also known as polymer alloy. Refer to the physical mixing of two or more polymers without the formation of chemical bonds. If two polymers can generate extra interaction, the ideal polymer blend can be formed. Ideal polymer blend will have advantages and characteristics of raw materials at the same time, but it will not be affected by their shortcomings seriously. However, most of the current researches are using synthetic polymers to manufacture polymer blend. Although these materials have good physical properties, the low biocompatibilit

APA, Harvard, Vancouver, ISO, and other styles

49

SHARAF, TAREK. "FLEXURAL BEHAVIOUR OF SANDWICH PANELS COMPOSED OF POLYURETHANE CORE AND GFRP SKINS AND RIBS." Thesis, 2010. http://hdl.handle.net/1974/6059.

Full text

Abstract:

This study addresses the flexural performance of sandwich panels composed of a polyurethane foam core and glass fibre-reinforced polymer (GFRP) skins. Panels with and without GFRP ribs connecting the skins have been studied. While the motivation of the study was to develop new insulated cladding panels for buildings, most of the work and findings are also applicable to other potential applications such as flooring, roofing and light-weight decking. The study comprises experimental, numerical, and analytical investigations. The experimental program included three phases. Phase I is a comprehens

APA, Harvard, Vancouver, ISO, and other styles

50

Lee, Guo-Da, and 李國達. "Preparation and Characterization of Electroactive Composite Fibers containing Polyurethane with Amine-capped Aniline Pentamer by Electrospinning." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/03995235860250450635.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>102<br>The polyurethane oligomer with amine-capped aniline tetramer was preliminarily synthesized from 4, 4-diphenylmethane diisocyanate or 1, 6-diisocyanatohexane with 1, 3-propanediol and N-phenyl-p-phenylene diamine. Subsequently, a series of electroactive polyurethanes (PU) with amine-capped aniline pentamer were successfully synthesized by reacting the synthesized polyurethane oligomers with amine-capped aniline tetramer with p-phenylenediamine via oxidative coupling polymerization. Various spinning solutions were prepared by mixing the electroactive

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!