Composite material and method for manufacturing automobile spare tire cover from composite material

Abstract

The invention relates to a composite material and a method for manufacturing an automobile spare tire cover from the composite material and belongs to the technical field of automotive interior trims. The composite material comprises polyurethane, a glass fiber mat and a PP (Polypropylene) honeycomb plate. The method specifically comprises the following steps: wrapping a PP honeycomb core layer with the glass fiber mat, uniformly and sufficiently spraying polyurethane to both sides of the glass fiber mat by using automatic spraying equipment, putting the polyurethane glass fiber mat PP honeycomb core layer into a mold of specific temperature, and performing mold combination pressure-keeping shaping; positioning; laying a mat surface; performing mold pressing stamping; wrapping edges; loading accessories; and testing. The invention aims to provide a method for manufacturing an automobile spare tire cover from the composite material with the polyurethane glass fiber mat PP honeycomb core layer, and a prepared spare tire cover product is relatively high in loading capacity, relatively light in weight, relatively slight in odor, large in gram weight, wide in thickness design range and relatively low in cost.

Description

[technical field] [0001] The invention relates to a composite material and a method for preparing an automobile spare tire cover by using the composite material, which belongs to the technical field of automobile interior parts. [Background technique] [0002] The spare tire cover in the luggage compartment of a car is mainly used to carry items and absorb the noise from outside the car at the same time, so it has better load-carrying performance. Lightweight and environmentally friendly spare tire cover products will be one of the first choices for customers to buy cars. selection factor. At present, the widely used materials for the spare tire cover are mainly PU glass fiber paper honeycomb, PP wood powder board and so on. Now the spare tire cover on the market mainly faces the following problems: [0003] 1. High product weight and thickness: In order to meet certain load-bearing performance requirements, some spare tire covers use high-weight materials, such as 3000g / ㎡...

AI Technical Summary

Problems solved by technology

[0003] 1. High product weight and thickness: In order to meet certain load-bearing performance requirements, some spare tire covers use high-weight materials, such as 3000g / ㎡wood powder board; and for the PU glass fiber paper honeycomb board currently used more, due to The existence of the paper core must meet the specified bearing capacity design requirements, resulting in thicker thickness of the entire part, so the existing boards often have high weight or thick thickness

As a result, some users, especially female customers, are quite laborious when taking the spare tire cover

[0004] 2. The carrying capacity is not up to the standard: At present, major automobile manufacturers are promoting lightweight, but simply for the lightweight of parts, the carrying capacity of the spare tire cover product cannot meet the carrying requirement of 180kg, causing customers to use it when it is placed. When carrying heavy items, the spare tire cover may be deformed or even broken

[0005] 3. Emission of a large amount of harmful gases: PU fiberglass paper honeycomb panels are widely used in automobile factories. Since the honeycomb layer uses paper cores, the current domestic paper core sources are mostly corrugated paper made of packaging paper recycled with some particle auxiliary materials. , and such a core layer is likely to release carcinogens such as formaldehyde, acetaldehyde, and acetone in a high-temperature environment such as summer. Customers, especially women and children, will be exposed to it for a long time, which will seriously affect their health.