High-heat-resistance electroplating-free PC/ASA alloy material for vehicle heat dissipation grid

Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-heat-resistance electroplating-free PC / ASA alloy material for a vehicle heat dissipation grid. The material comprises following components in parts by weight: 30 to 60 parts of PC resin, 5 to 20 parts of ASA rubber powder, 30 to 60 parts of SAN resin, 5 to 10 parts of PBT resin, 1 to 6 partsof PMMA resin, 0.3 to 1 part of an antioxidant, 0.3 to 1 part of an ultraviolet absorbent, 5 to 15 parts of a heat-resistant agent, 1 to 5 parts of a compatilizer and 1 to 3 parts of metal powder. Based on a common PC / ASA formula, PBT resin and PMMA resin are added, the influence of water absorption of the material on the material appearance is reduced; meanwhile, a heat-resistant agent and a compound compatilizer are added to jointly improve the heat resistance and weather resistance of the modified material, and metal powder with a proper particle size is added, so that the surface of the product has special metallic luster, spraying or electroplating is not needed, and the material is environmentally friendly, safe, capable of meeting the high appearance requirement of a vehicle heat dissipation grid and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a PC / ASA alloy material, in particular to a high heat-resistant electroplating-free PC / ASA alloy material for a heat dissipation grid for a vehicle. Background technique [0002] In recent years, customizable cars with gorgeous appearance have become popular, and the demand for automotive materials with unique colors and special visual effects has gradually increased. Automobile radiator grille is a channel to avoid overheating of the engine and discharge hot air. Therefore, not only must the appearance requirements of consumers be met, but the material of the radiator grille must also have certain heat resistance, weather resistance and impact resistance. Traditional metal materials have high manufacturing costs and high energy consumption. At present, composite engineering plastics are generally used to replace metal materials to prepare auto parts, which has the advant...

AI Technical Summary

Problems solved by technology

However, under high-temperature and high-humidity environments, PC resin is prone to high internal pressure in local areas, causing stress-induced hydrolysis, and the potential accumulation of internal pressure produces a cascading effect. Long-term accumulation will form micro-defects on the surface of the material and affect the product. Gloss

[0006]The heat dissipation grille for vehicles is in a high temperature state for a long time, and if the heat resistance performance is not up to standard, it will be deformed, and the problem of water absorption of PC resin and the aging problem of electroplating-free materials are also Will further affect aesthetics and safety

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