High-surface-tension polypropylene material as well as preparation method and application thereof

Abstract

The invention discloses a high-surface-tension polypropylene material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The high-surface-tension polypropylene material comprises the following components in parts by weight: 55-80 parts of polypropylene resin, 10-20 parts of inorganic filler, 5-15 parts of elastomer, 5-10 parts of linear low-density polyethylene, 0.5-1 part of surface tension aid and 0-0.8 part of processing aid, the structural formula of the surface tension aid is R1-(CH2) n-R2 or R1-(CH2) m1-CH = CH-(CH2) m2-R2, R1 is-CO-NH2, R2 is H or-CO-NH2, and n is 16-24; m1 and m2 are positive integers, and m1 + m2 = 14-20. According to the high-surface-tension polypropylene material provided by the invention, the surface tension can be remarkably improved only by adding a small amount of the surface tension additive, and the rigidity and toughness cannot be lost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, more specifically, to a high surface tension polypropylene material and its preparation method and application. Background technique [0002] With the continuous promotion of the concept of low-carbon environmental protection in the whole society, more and more domestic and foreign OEMs have begun to pay attention to and pay attention to the development and application of water-based coating technology. Water-based automotive coatings will also become an inevitable trend in the future development of the automotive coatings industry. At present, polypropylene is the most widely used plastic material for automotive exterior parts. Polypropylene material is a non-polar material, while water-based paint is a highly polar material. Through the water drop contact angle test, the wetting angle between the polypropylene material and the water-based paint exceeds 100°, which proves that the wat...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies in the prior art that the amount of maleic anhydride grafted polypropylene added to increase the surface tension in the polypropylene material leads to a decrease in the rigidity and toughness of polypropylene, and provides a high surface Tension polypropylene material, only need to add a small amount of surface tension additives, can significantly increase the surface tension, and will not lose rigidity and toughness

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