NDLI: Influence of siloxane co-segment length and content of waterborne polysiloxane-urethane copolymers on their water resistance, thermal stability and mechanical properties

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Chinese Journal of Polymer Science : Volume 28, Issue 1, January 2010

Influence of siloxane co-segment length and content of waterborne polysiloxane-urethane copolymers on their water resistance, thermal stability and mechanical properties

Content Provider	Springer Nature Link
Author	Gao, Chuan hua Chen, Meng yi Ni, Jia ni Hua, Ji jun Xu, Xiao ming Lin, Wei wei Zheng, Qiang
Copyright Year	2010
Abstract	A series of stable waterborne polysiloxaneurethane (WPSUR) dispersions were prepared using amino-terminated polydimethylsiloxane (NS), dimethylolpropionic acid (DMPA), castor oil, polypropylene glycol and toluene diisocyanate. Meanwhile, NS with different molecular weights was synthesized and used as the soft co-segment. Effects of types and contents of soft co-segments as well as chain extenders on the thermal degradation and stability for WPSUR films were examined. Results reveal that WPSUR films exhibit excellent water resistance and mechanical properties as compared with pure polyurethane (PU) films, and the NS soft co-segment possesses a remarkable effect on the second stage (stage II), while the content of the hard segment is propitious to the initial stage (stage I). Moreover, the highest temperature of stage II (T 2m) for WPSUR films using NS as soft co-segment is 413°C, approximately being 30°C higher than that of those typical PUs using HDA and APDMS as the chain extenders, respectively.
Starting Page	219
Ending Page	229
Page Count	11
File Format	PDF
ISSN	02567679
Journal	Chinese Journal of Polymer Science
Volume Number	28
Issue Number	2
e-ISSN	14396203
Language	English
Publisher	Chinese Chemical Society and Institute of Chemistry, CAS
Publisher Date	2010-02-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Waterborne Polysiloxane Polyurethane Castor oil Thermal properties Water resistance Condensed Matter Physics Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering Polymers and Plastics

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