A kind of alcoholysis-resistant PPA composite material and processing method thereof for automobile

Abstract

The present invention discloses an automobile alcoholysis-resistant PPA composite material comprising the following components by weight: 58-63.1% of PPA resin, 35-40% of pretreated glass fiber, 0.4-0.6% of a nucleating agent, 1-1.1% of an additive and 0.4-0.5% of a heat stabilizer, and by successive combination of ultrasonic vibration and mechanical vibration, a silane coupling agent and a PPE melt are used for impregnation pretreatment of the glass fiber. The present invention also discloses a processing method of the automobile alcoholysis-resistant PPA composite material, the alcoholysis resistance of the automobile alcoholysis-resistant PPA composite material can be improved under the premise of no reduction of physical properties of the automobile alcoholysis-resistant PPA composite material without addition of an alcoholysis-resistant agent, the automobile alcoholysis-resistant PPA composite material has excellent alcoholysis resistance, the alcoholysis resistance can reach TL-VW774 testing requirements, the sample surface is good, and does not change and crack, and the problem of need of addition of the alcoholysis-resistant agent or an anti-alcoholysis agent for achieving alcoholysis-resistant performance requirements in the prior art and the problem of significant decrease of mechanical performances of a matrix material by addition of PPE in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an alcoholysis-resistant PPA composite material for automobiles and a processing method thereof. Background technique [0002] With the rapid development of the automobile industry, replacing steel with plastic has become the trend and direction of the development of automobile materials. Glass fiber reinforced PPA materials are widely used in water chamber parts of automobiles, such as thermostats, for their excellent heat resistance and mechanical properties. Shells, water tank joints, etc. These parts not only require the material to have excellent mechanical properties, but also require the material to have good hydrolysis resistance and alcoholysis resistance, and can be used for a long time in hot water and antifreeze ethylene glycol mixed solution without performance degradation. [0003] The materials used for automotive water chamber parts are required to be resistant t...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a PPA composite material with excellent long-term alcoholysis resistance, which solves the problem of the prior art that requires the addition of alcoholysis-resistant agents or anti-alcoholysis agents to meet the requirements of alcoholysis-resistant properties Problem: The PPA composite material does not need to add alcoholysis-resistant agent, not only maintains the original physical properties, but also meets the technical requirements of TL-VW774 in the alcoholysis-resistant chemical properties, that is, placed in 100% ethylene glycol solution at a constant temperature of 135°C After 48 hours, the surface of the product is good without change, without cracking, and has excellent mechanical properties

Images