| Abstract: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. |
