Low-odor, low-VOC and scratch-resistant polypropylene interior material for vehicle and preparation method of polypropylene interior material

Abstract

The invention discloses a low-odor, low-VOC and scratch-resistant polypropylene interior material for vehicles and a preparation method of the polypropylene interior material. The low-odor low-VOC scratch-resistant polypropylene interior material for the vehicle comprises the following components: 63 to 66% of polypropylene, 18 to 22% of talcum powder, 8 to 12% of a flexibilizer, 0.3 to 0.5% of an antioxidant, 0.3 to 0.5% of a lubricant, 0.1 to 0.3% of a light stabilizer, 1 to 3% of a deodorant and 1 to 3% of a scratch-resistant agent. The pore diameter of the deodorant is 10 [mu] m and 50 [mu] m; and the scratch-resistant agent is formed by compounding silicone and erucyl amide according to a weight ratio of 1: 2-2: 1. By adopting the deodorant containing the microporous water-containing structure, the odor grade and VOC content of the material can be effectively reduced, so that the odor grade standard of automotive trim materials of various main engine plants is less than or equal to 3.0, and the VOC content standard is met.

Description

technical field [0001] The invention belongs to the field of polymer modified materials, and in particular relates to a low-odor, low-VOC scratch-resistant polypropylene interior material for vehicles and a preparation method thereof. Background technique [0002] Polypropylene (PP) modified materials are widely used in automobiles, home appliances, food, medical, construction pipes and other fields because of their low cost, low density, excellent chemical resistance, outstanding physical and mechanical properties, and good processing performance. It is one of the fastest growing general-purpose plastics in the market. As the main means of transportation in daily life, automobiles are steadily increasing in use and demand, and are favored by more and more consumers. As people's health awareness continues to increase, consumers pay more attention to the internal environment of automobiles. The odor of the air environment, VOC (volatile organic compounds), the aesthetics of ...

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Problems solved by technology

Chinese patent CN111057339A proposes to prepare a water-absorbing masterbatch, which can take away small molecular substances during extrusion and granulation, thereby reducing the odor level and VOC content of the material. The water-absorbing masterbatch is made of XP100-60 and free water from a German manufacturer According to a certain proportion, it is made under a specific process. Since this type of masterbatch is imported from Germany, the price is relatively high, resulting in high material costs.

Chinese patent application CN201010258937 uses aluminosilicate odor adsorption masterbatch to adsorb small molecules to reduce the emission of organic matter, but there will be desorption of small molecular compounds, which will affect the final effect

This method has achieved good results in improving the odor and VOC of the material, but it requires modification of the equipment, which costs a lot

Chinese patent CN106589584A proposes a preparation method of scratch-resistant material, which uses the method of homopolypropylene nucleating agent production, by improving the rigidity of the material and the crystallinity of the material, to improve the hardness of the surface of the workpiece, and then improve The scratch resistance of the material, however, due to the strong rigidity of the material, the impact is low, which cannot meet the performance requirements of automotive interior materials, and there are certain limitations in use

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