Polydimethylsiloxane-modified epoxy

Shih W-C et al. (1999) Polydimethylsiloxane containing isocyanate group-modified epoxy resin curing, characterization, and properties. J Appl Poly Sci 73(13) 2739-2747... 

IHu Hu, D., Zheng, S.-X. Morphology and thermomechanical properties of epoxy thermosets modified with polysulfone-block-polydimethylsiloxane multiblock copolymer. J. Appl. Polym. Sci. 119 (2011) 2933-2944. 

Epoxies modified with butadiene acrylonitrile copolymers with (32) amine or carboxy end groups have disadvantages. They are susceptible to thermal and oxidative degradation and also have poor hot/wet properties, i.e., they soften when exposed to heat and moisture for long periods. Polysiloxane rubbers such as polydimethylsiloxane have been considered as a possible alternative. 

Wang and Cheng reported preparation of ultraviolet light-curable resin for coating optical fibers. It consists of polydimethylsiloxane epoxy acrylate and polyethylene glycol urethane acrylate. To this were added in different proportions trimethylolpropane triacrylate to modify the properties of blends. After addition of a photoinitiator the choice formulation photo cured in 5 seconds. 

Riffle JS, Yilgor I, Tran C et al (1983) Elastomeric polysiloxane modifiers for epoxy network -synthesis of fimctional oligomers and network formation studies. ACS Symp Ser 221 21-54 Risse S, Kussmaul B, BCriiger H et al (2012) Synergistic improvement of actuation properties with compatibilized high permittivity filler. Adv Funct Mater 22 3958-3962 Romasanta LJ, Leret P, Casaban L et al (2012) Towards materials with enhanced electro-meehanical response CaCu3Ti40i2-polydimethylsiloxane composites. J Mater Chem 22 24705-24712 Rosset S, Shea HR (2013) Flexible and stretchable electrodes for dielectric elastomer actuators. Appl Phys A Mater Sci Proeess 110 281-307... 

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