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采用核/壳乳液聚合工艺,以醋酸乙烯(VAc)为主单体、甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)为改性单体、丙烯酸(AA)和N-羟甲基丙烯酰胺(NMA)为交联单体,合成出一种玻璃纤维定型用的改性聚醋酸乙烯(PVAc)粘合剂。研究结果表明:当聚合温度为75℃、m(AA)∶m(VAc)∶m(MMA)∶m(NMA)∶m(BA)=1∶35∶7∶1.5∶12时,改性PVAc乳液既具有优良的粘接性能,又具有很强的粘接性、耐水性、耐碱性和弹性,并可赋予玻璃纤维良好的定型防腐功效。
The core / shell emulsion polymerization technology was used to synthesize vinyl acetate (VAc) monomer, methyl methacrylate (MMA) and butyl acrylate (BA) as monomers, acrylic acid (AA) and N-methylol Acrylamide (NMA) as a cross-linking monomer, a modified polyvinyl acetate (PVAc) binder for glass fiber shaping was synthesized. The results show that when PVA (VAc): m (MMA): m (NMA): m (BA) = 1:35:7:1.5:12 at the polymerization temperature of 75 ℃, Emulsion has both excellent adhesive properties, but also has a strong adhesive, water resistance, alkali resistance and flexibility, and can give a good glass fiber anti-corrosion effect of stereotypes.