聚乙二醇改性三聚氰胺甲醛树脂对汽车空气滤纸性能的影响

Influence of Melamine Formaldehyde Resin Modified with Polyethylene Glycol on Performance of Automobile Air Filter Paper

采用聚乙二醇对三聚氰胺甲醛树脂进行改性,改性后的树脂用作交联剂添加到苯丙乳液中,并对汽车工业滤纸原纸进行浸渍加工处理。通过研究聚乙二醇(P)、三聚氰胺(M)、甲醛(F)的不同配比、树脂添加量及固化pH值,探讨了其作为乳液交联剂对汽车工业空气滤纸的抗张强度、耐破度、耐水性、透气度的影响。实验结果表明,当P与M的摩尔比为0.32,F与M-MP的摩尔比为2.8,改性树脂添加量为苯丙乳液固含量的4%,固化pH值为6～7时,汽车工业空气滤纸的综合性能最佳(苯丙乳液的上胶量为25%)。当pH值为6时,滤纸的抗张强度为4.51 kN/m,耐破度为340 kPa,耐水性为39.4min,透气度为334 L/(m2.s)。

In order to manufacture the automobile air filter paper,the base filter paper was impregnated with styrene-acrylic latex containing the cross-linking agent of melamine formaldehyde resin which was modified with polyethylene glycol（PEG）.The influence of various proportion of PEG（P）,melamine（M） and formaldehyde（F）,resin dose,and curing pH value on tensile strength,burst strength,water-resistance and air permeability of automobile air filter paper were investigated.The result showed that the optimum conditions were as follows： molar ratio of P/M 0.32,molar ratio of F/（M-MP） 2.8,dose of modified resin 4% on styrene-acrylic latex solid content,and curing pH value 6 to 7（impregnated amount of styrene-acrylic latex 25%）.The tensile strength of the filter paper was 4.51 kN/m,burst strength was 340 kPa,water-resistance was 39.4 min,and air permeability was 334 L/（m2·s） when pH value was 6.