水分散有机硅-聚氨酯嵌段共聚物的合成与性能

1.浙江大学高分子科学与工程学系,浙江,杭州,310027

2.高分子合成与功能构造教育部重点实验室,浙江,杭州,310027

基金项目: 国家基础研究专项基金(2005CB623800) 浙江省重大科技攻关项目(2006C11050)

Synthesis and Properties of Aqueous Polysiloxane-Polyurethane Block Copolymer

通过两步法合成了水分散有机硅-聚氨酯嵌段共聚物,并考察了体系中有机硅含量的变化对薄膜力学性能、热性能、硬度以及薄膜表面接触角的影响.发现随着体系中有机硅含量增高,热稳定性有所提高,薄膜拉伸强度和模量增大,而断裂伸长率呈先减小后增大的趋势;与此同时,薄膜表面接触角增大,体系有较好的拒水性.

[1]	Jianglin Quli Fan;Chen Qingmin;Yu Xuehai .Synthesis and Properties of Polyurethane Modified with Aminoethylaminopropyl Poly(dimethyl siloxane)[J].Journal of Applied Polymer Science,1999(10):2552-2558.
[2]	Aurelian Stanciu;Victor Bulacovschi;Mioara Lungu;Stelian Vlad;Sorin Balint;Stefan Oprea .Mechanical behaviour if crosslinked poly(ester-siloxane) urethanes[J].European Polymer Journal,1999(11):2039-2044.
[3]	Sundar S;Vijayalakshmi N;Gupta S;Rajaram R;Radhakrishnan G .Aqueous dispersions of polyurethane-polyvinyl pyridine cationomers and their application as binder in base coat for leather finishing[J].Progress in Organic Coatings: An International Review Journal,2006(2/3):178-184.
[4]	F.S. Chuang;W.C. Tsen;Y.C. Shu .The effect of different siloxane chain-extenders on the thermal degradation and stability of segmented polyurethanes[J].Polymer Degradation and Stability,2004(1):69-77.
[5]	Bulacovschi V.;Rusu I.;Cailean A.;Ungureanu F.;Stanciu A. .Thermal stability and the behaviour in organic solvents of some poly(ester-siloxane)urethanes[J].Polymer Degradation and Stability,1998(2/3):487-491.

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