摘要
利用醋酸乙烯酯 /甲基丙烯酰氧乙基三甲基氯化铵 (VAC/DMC)阳离子型无皂乳液对水泥砂浆进行了改性研究 ,并与普通VAC均聚物乳液进行了比较。研究表明 ,!与普通水泥砂浆相比 ,VAC/DMC阳离子型无皂乳液改性砂浆 (聚灰比为 0 .1时 )的抗折强度较普通砂浆够提高 77% ,其改性效果明显好于普通VAC乳液 ,表明用阳离子无皂乳液改性水泥性能能够取得良好效果。探讨了VAC/DMC对水泥砂浆改性的原因。
Cement mortars were modified with the soap-free cationic emulsion copolymer of vinylacetic acid (VAC) and methacyloy loxyethyl trimethylammonium chloride (DMC). The properties of the modified mortars were compared with those modified with polyvinyl acetate (PVAC). The results indicate that in comparison with the plain cement mortar, the bending strength of the mortars modified with the soap-free cationic emulsion copolymer of VAC/DMC[m(p)/m(c)=0.1] increases by 77%, and is better than that of the mortars modified with PVAC. The mechanism of the cement mortar modification by the VAC/DMC soap-free cationic emulsion copolymerization is discussed.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2002年第4期429-433,共5页
Journal of The Chinese Ceramic Society
基金
山东省自然科学基金资助项目 (Y97b10 0 3 3 )~~
