Trimethylolpropane trimethacrylate TMPT

Hydrated aluminum oxide is a preferred flame refardanf fhaf liberates its water of hydrafion when exposed to flames, in contrast to chlorinated materials, which give off toxic gases as by-products. The paraffin oil is a processing aid that enhances the ability to extrude such materials. The silane is a coupling agent that improves the interaction between the polymers and the aluminum trihydrate. Trimethylolpropane trimethacrylate (TMPT) enhances the radiation response. 

Blends of EPDM rubber with GRT powders of 80 meshes in a proportion of 70/30 with three polyfunctional monomers including diethylene glycol dimethacrylate (2G), trimethylolpropane trimethacrylate (TMPT), and trimethylolpropane triacrylate (A-TMPT) were prepared and cured by the electron-beam irradiation of doses ranging from 25 kGy to 100 kGy (Yasin et al., 2012). The solubility of functional monomers in EPDM/GRT was ranked as A-TMPT > 2G > TMPT. The highest tensile strength was obtained in blend vulcanizates containing A-TMPT. 

Note phr = parts per hundred parts of rubber, ENB = ethylene norbornene (curing site in the elastomer), TMPT = trimethylolpropane trimethacrylate (prorads). 

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