Composite material, automobile spare tire cover and preparation method thereof

Abstract

The invention relates to the technical field of automobile materials, in particular to a composite material, an automobile spare tire cover and a preparation method thereof. The composite material hasa multi-layer composite layer structure, and the composite layer structure is composed of epoxy resin layers and glass fiber felt layers which are alternately arranged, the composite layer structurecomprises an odd number of layers, and a top layer, a bottom layer, and a middle layer of the composite layer structure are the epoxy resin layers. Compared with the prior art, the composite materialhas the advantages that the technical scheme designed by the invention can effectively utilize a currently mature epoxy resin prepreg process, and changes the material structure stratification of a spare tire cover sheet on the existing market, the weight of a car trunk spare tire cover product is reduced by 20%, the thickness is reduced by 35%, the bearing capacity is up to 200kg, the odor emission is improved, at the same time, the composite material satisfies more choices for customers in designing data, reduces costs and improves product competitiveness.

Description

technical field [0001] The invention relates to the technical field of automobile materials, in particular to a composite material, an automobile spare tire cover and a preparation method thereof. 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 / ㎡wood powder board; and for the PU ...

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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.

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