【摘要】 以乙烯基三乙氧基硅烷（VTES）、丙烯酸酯为单体,乙氧基醇磺基琥珀酸二钠（A—102）为乳化剂,合成了有机硅改性丙烯酸酯共聚乳液。研究了乳化剂、引发剂、VTES、反应温度以及功能性单体甲基丙烯酸羟乙酯（HEMA）对乳液共聚反应速率的影响。结果表明:聚合速率随乳化剂浓度、引发剂浓度、HEMA浓度的增大及反应温度的升高而增大,但随VTES浓度增大而逐渐减小。由实验得出恒速阶段聚合反应速率R_p与乳化剂浓度C_E、引发剂浓度C₁及有机硅单体浓度C_VTES的关系为R_p∝C_E^0.35C_I^0.48C_VTES^-0.64,表观活化能E_a为81.1kJ·mol^-1。更多还原

【Abstract】 The kinetic of emulsion copolymerization of acrylates and vinyl triethoxy silane has been studied. The effects of the concentrations of emulsifier, initiator, VTES,and HEMA as well as the reaction temperature on polymerization rate( RP ) were investigated in detail. The results showed that polymerization rate ( RP ) increased with the concentration of emulsifier, initiator, HEM A and reaction temperature, while decreased with concentration of VTES. The kinetic relation of the system was Rp ∝ CE 0.35 CI0.48 CVTES-0.64 . The apparent activation energy was found to be 81. 09 kJ · mol-1.更多还原