A kind of weather-resistance modified plastic particles of automobile headlights and its production process

Abstract

The invention discloses a weather-resistant modified plastic granule for automobile headlights, which is composed of the following materials in parts by weight: 130-150 parts of polybutylene terephthalate, 25-30 parts of polystyrene, and 12 parts of diatomite ‑16 parts, 8‑12 parts of nano-alumina, 6‑8 parts of silicon powder, 8‑12 parts of microcrystalline cellulose, 8‑12 parts of monoglyceride stearate, 5‑8 parts of calcium stearate, citric acid 2-5 parts of ester, 25-30 parts of cyclohexanone, the present invention relates to the technical field of plastics. Through the hot-melt stirring of the material, the internal material is homogenized, and the reaction between the materials is used to fuse and change the phase of the material, and the weather resistance of the modified plastic is strengthened to avoid its own automatic decomposition or failure due to use. Condition of discoloration.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a weather-resistant modified plastic particle for an automobile lamp and a production process thereof. Background technique [0002] The car light system consists of headlights, fog lights, width lights and tail lights, brake lights, turn signal lights, hazard warning lights, license plate lights, reversing lights, instrument lights and dome lights. The shell of the lamp system is made of plastic, which needs to have strong high temperature resistance, weather resistance, impact resistance and anti-fog performance. At present, the most commonly used modified plastics are general-purpose modified plastics, such as PP, PE, PVC, ABS and PA. Wait. [0003] Existing modified plastics have poor stability to light and heat. When they are exposed to sunlight for a long time or above 100°C, they will decompose and produce hydrogen chloride, which will further autocatalyze and decompose,...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a weather-resistant modified plastic granule for automobile headlights and a production process, which solves the problem that the existing modified plastic has poor stability to light and heat, and can be damaged at temperatures above 100°C or over a long period of time. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration, rapid decline in physical and mechanical properties, greater brittleness, poor impact resistance, and poor weather resistance.

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