新型交联网状端环氧基聚硅氧烷织物整理剂的制备工艺探讨

Discussion on synthesis optimization of novel crosslinked polysiloxane with end-capped epoxy groups as fabric finishing

以四甲基氢氧化铵(Me4NOH)为催化剂,利用八甲基环四硅氧烷(D4)、四甲基四乙烯基环四硅氧烷(D4V)、(3-缩水甘油醚丙基)-1,1,3,3-四甲基二硅氧烷(ETP)间的阴离子聚合法制得端环氧基聚甲基乙烯基硅氧烷(EPVMS).再利用EPVMS与含氢硅油间的硅氢化加成反应制得了新型交联网状端环氧基聚硅氧烷织物整理剂(CLPS).用红外光谱及核磁共振氢谱对其结构进行表征.结果表明,制备中EPVMS的环氧值和乙烯值控制为0.08mmol·g-1及0.10mmol·g-1较为适宜.红外光谱和核磁共振氢谱证实产物具有预期结构.随交联度增加,其疏水性增强.

Abstract. Novel crosslinked polysiloxane with end-capped epoxy groups （CLPS） as water proofing agent for fabric was synthesized by hydrosilylation of polymethylhydrosiloxane （PHMS） oligomer and an epoxy groups-terminated polyvinylmethylsiloxane （EPVMS）, which was previously prepared via anionic ring-opening polymerization of octamethylcyclotetrasiloxane （D4）, 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane （D4V）, and epoxy group-terminated polydimethylsiloxane （ETP） using tetramethylammonium hydroxide （Me4NOH） as a catalyst. The resultants were characterized by Fourier transform infrared spectroscopy （FT-IR）, nuclear magnetic resonance spectra （^1H NMR）, and other instruments. FT-IR and NMR confirmed the structure of the resultants. Hydrophobicity of the CLPS was enhanced with augment of crosslinking degrees.