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실라놀 축합반응으로 가교한 고성능 투습 방수 수분산 폴리우레탄의 구조와 물성

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Abstract
A poly (ethylene glycol) (PEG) macromer with two hydroxyl groups at one chain end and capable of participating in the polyurethane reaction was synthesized. This PEG macromer was used to prepare waterborne polyurethane (WPU) for waterproof breathable coating, which has PEG side chains and is curable by silanol condensation reaction. The effect of this PEG macromer on water vapor permeability, water resistance, thermal, mechanical, and physical properties of the WPU was evaluated. In addition, a change in properties of WPU was investigated by substituting a part of 1,4-butanediol used as a chain extender with dimethylol propanoic acid, which can be crosslinked by reacting with a melamine type crosslinking agent. Further, the effect of additional hydrophilic silica, which acts as a crosslinker and as a reinforcing filler on the properties of WPU was examined.|Poly(ethylene glycol) (PEG) 사슬 말단에 두 개의 히드록실기를 가져 폴리우레탄 반응에 참여할 수 있는 PEG macromer를 합성하고, 이를 사용하여 PEG 곁사슬이 부착되고, 실라놀 축합반응으로 가교된, 투습 방수 코팅 용 수분산 폴리우레탄을 제조하고, 구조 변화에 따른 물성 변화를 조사 평가하였다. 즉, 친수성의 PEG macromer를 변량하는 경우, 멜라민계 후가교제와 반응하여 가교를 형성하는 디메틸올프로판산을 변량하는 경우, 그리고 가교제와 보강제로 작용할 수 있는 친수성 silica를 투입하는 경우들에서 투습도와 방수능의 변화, 그리고 열적, 기계적, 물리적 성질의 변화를 조사하였다.
Author(s)
정은재
Issued Date
2018
Awarded Date
2018-02
Type
Dissertation
Keyword
WPUSilanolcondensation
URI
https://oak.ulsan.ac.kr/handle/2021.oak/6864
http://ulsan.dcollection.net/common/orgView/200000010314
Alternative Author(s)
Jung eun-jae
Affiliation
울산대학교
Department
일반대학원 화학과
Advisor
정한모
Degree
Master
Publisher
울산대학교 일반대학원 화학과
Language
kor
Rights
울산대학교 논문은 저작권에 의해 보호받습니다.
Appears in Collections:
Chemistry > 1. Theses (Master)
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