GMT plate and preparation method and application thereof

Abstract

The invention provides a GMT plate and a preparation method and application thereof. The GMT plate is prepared from the following raw materials in parts by weight: 40-60 parts of short glass fibers, 40-60 parts of PP powder or PP fibers, 1-5 parts of expandable microspheres, 0.1-0.5 part of a dispersing agent, 0.1-0.5 part of a surfactant, 0.1-0.5 part of a defoaming agent and 0.5-2 part of a silane coupling agent. According to the preparation method, the expandable microspheres are introduced into a GMT plate wet process, the whole process is simpler, the operation is more flexible, and the method is more suitable for continuous production. The GMT plate provided by the invention can be used for manufacturing automotive trim parts. After the expandable microspheres are foamed, the densityof automotive trim parts manufactured by utilizing the GMT plate can be obviously reduced, the thickness of the plate is increased, and the lightweight requirement of the GMT plate for automobiles can be met. Meanwhile, due to the synergistic effect of the expandable microspheres on the glass fibers and the PP material, various physical properties of the ultra-light automobile trim parts are improved to a certain extent, and the trim parts have the advantages of being environmentally friendly, non-toxic, light in weight, good in mechanical property, corrosion resistance and sound insulation.

Description

technical field [0001] The invention relates to a GMT plate, more specifically, to a GMT plate and its preparation method and application. Background technique [0002] Glass fiber reinforced thermoplastic composite material, referred to as GMT material, is a new type of material composed of glass fiber and thermoplastic PP material. It has light weight, environmental protection, sound absorption, heat insulation, high strength, good toughness, and excellent chemical resistance. Specific corrosion and environmental adaptability, widely used in transportation, construction, aviation fields. The modern automobile industry takes the reduction of body weight as the main development direction of energy saving and consumption reduction. Lightweight GMT material has gradually become the mainstream material for making auto parts (car roof, rear partition, guard plate, engine cover, trunk cover, gear case cover). At the same time, development trends such as energy saving, lightweig...

AI Technical Summary

Problems solved by technology

Among them, the investment of wet process equipment is large and the process is complicated, but the uniformity of the plate is good, and the height of heating expansion is large; the equipment of dry process and fluidized field process is simple, the investment is small, but the uniformity of the plate produced is poor, and the height of heating expansion is small. Because the uniformity of glass fiber and PP mixing is not as uniform as that of wet process

[0003] In addition, the connection mode between glass fiber and PP in GMT material is point-to-point connection. However, this method not only increases the manufacturing cost, but also is not conducive to the development trend of lightweight GMT materials. As a result, the density of the prepared GMT plates is generally around 1000g / m2. Components (e.g. automotive interior parts) are also denser

Images