摘要
提出了在无皂乳液中加入挥发性有机物质辛醇进行聚合反应 ,以提高乳液的性能及稳定性。详细讨论了各种因素对合成无皂乳液的影响 ,得出了最佳工艺条件 :辛醇的用量为单体质量的 3 0 % ;m(CH2 CHCOOC2 H5) ∶m(C6H5CHCH2 ) =1 0 0 0∶0 2 2 9;反应温度 85℃ ;反应时间3h ;恒温时间 0 5h ;乳液的 pH =8 0。加料方式 :辛醇与单体混合 ,乳化剂与水混合。实验证明 ,挥发性有机物质与极少数乳化剂的复合使用不仅提高了乳液的稳定性 ,而且也大幅度提高了乳液聚合物的性能 。
Volatile organic compound octanol was added to soapless latex during polymerization in order to increase the capability and stability of the latex.Factors affecting the synthesis of soapless latex were studied in detail,and the optimum conditions were obtained.Dosage of octanol was 3 0% of the monomers; m (CH 2 CHCOOC 2H 5) ∶ m (C 6H 5CH CH 2) =1∶0 229.Octanol was mixed with the monomers and the emulsifier with water.Copolymerization was conducted at 85 ℃ for 3 h at first,and then for a post polymerization time 0 5 h.pH of the latex was adjusted to 8 0.Experimental results indicated that multiple use of volatile organic compound and small amount of emulsifier not only increased the stability of the emulsion but also improved the capability of the polymer emulsion,especially the frozen blend.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2002年第B08期124-128,共5页
Fine Chemicals
