High-rigidity, high-heat-resistant and scratch-resistant polypropylene modified material

Abstract

The invention provides a high-rigidity, high-heat-resistant and scratch-resistant polypropylene modified material which includes, by weight, 96-98 parts of a basic material, 0.3-1 part of an antioxidant, 0.3-1 part of a photo-stabilizer, 0.3-1 part of a lubricant, 0.3-1 part of a coupling agent, and 0.3-1 part of white oil. The basic material includes, by weight, 52-90% of polypropylene, 3-40% of a filling material, 1-5% of a nano metal oxide, and 0.5-3% of polytetrafluoroethylene wax. The polypropylene modified material has high rigidity and high heat resistance and is scratch-resistant, is low in cost, is easy to prepare and is wide in application range. The invention also discloses a method of preparing the polypropylene modified material.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular, the invention relates to a modified polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic with good processing performance, oil resistance, chemical resistance, light weight and low price. It is currently being widely used and is the fastest growing thermoplastic. But it also has some shortcomings in terms of performance, such as poor heat resistance, low strength, poor low-temperature impact performance, and poor scratch resistance, which greatly limit the application of polypropylene in the automotive interior industry. [0003] To improve the rigidity and heat resistance of polypropylene, glass fiber is usually added to improve the rigidity, heat resistance, and strength of the material, and the scratch resistance of the material is improved by adding a scratch-resistant agent. [0004] Chinese patent C...

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Problems solved by technology

[0004] Chinese patent CN101020775A introduces the preparation of a high-strength and high-toughness polypropylene material, which mainly achieves the toughening effect through mineral reinforcement, β-nucleating agent and elastomer. The cost of this method is relatively high, and the strength and toughness of the composite material are improved. limited

[0005] Chinese patent CN1468897A introduces a method for preparing a polypropylene composite material made of potassium titanate whiskers and glass fibers. The strength and toughness of the prepared material are relatively high. However, the use of glass fibers will affect the appearance of the workpiece and is prone to warping, etc., which limits the use of materials

[0006] European patent EP496625A discloses a composite material of high crystalline polypropylene, which only achieves the purpose of high strength and high rigidity by adding talcum powder, but this leads to a decrease in the impact strength of the composite material, thereby limiting the use of the material

[0007] Chinese patent CN102516662A introduces the preparation of a high-strength, high-heat-resistant polypropylene composite material, which improves the heat resistance and strength of the material by adding magnesium salt whiskers, and its heat resistance temperature and strength are improved to a certain extent, but its processing way is relatively simple

[0008] Chinese patent CN103910933A introduces a high-hardness scratch-resistant polypropylene material and its preparation, which increases the surface hardness of the material by adding polymethyl methacrylate composition and talcum powder to improve the scratch resistance of the material. The scratch resistance has been improved to a certain extent, but its cost is high, and its strength and impact are small, which affects its wide range of use

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