汽车工业棉浆滤纸用高效苯丙乳液的合成及应用

以苯乙烯(St)和丙烯酸丁酯(BA)为软单体,N-羟甲基丙酰胺(NMA)和丙烯酸(AA)为交联剂,选用十二烷基硫酸钠(SDS)和脂肪醇聚氧乙烯醚(OS-15)复合体系为乳化剂,过硫酸铵(APS)为引发剂,采用半连续法合成了汽车工业棉浆滤纸用苯丙乳液。通过对涂布后滤纸的检测确定了最佳反应配比为:m(BA)∶m(St)∶m(AA)∶m(NMA)∶m(SDS)∶m(OS-15)∶m(APS)=10.4∶26∶1.6∶2.00∶0.1∶0.3∶0.24。反应温度为85~87℃,上胶量为17.88%。浸渍后滤纸的耐破度可达360 kPa,耐水性约为250 m in,透气度大于480 L.m-2.s-1,挺度大于3.75 mN.m,综合性能良好。

Synthesis and Application of High Performace Styrene-Acrylic Copolymer Latex Used for Cotton Filter Paper in Anto Industry

The title latex has been prepared using styrene(St)as hard monomer,butyl acrylate(BA)as soft monomer,N-Methylolacrylamide(N-MAM)and acrylic acid(AA) as self-crosslinking monomer,and sodium lauryl sulfate(SDS) and aliphatic polyethenoxy ether(OS-15) as blended emulsifer and Ammonium persulfate(APS) as initiator,by semi continuous emulsion polymerization.The performance of emulsion and impregnated auto-industry filter paper were examined and analyzed.The optimal condition of synthesis of emulsion was m(BA)∶m(St)∶m(AA)∶m(NMA)∶m(SDS)∶m(OS-15)∶m(APS)=10.4∶26∶1.6∶2.00∶0.1∶0.3∶0.24.The reaction temperature was at the range of 85 ℃~87 ℃ and the spread is 17.88%.The bursting strength of impregnated filter paper was over 360 kPa,water resistance 250 min,air permeability over 480 L·m-2·s-1,and stiffness over 3.75 mN·m.