A kind of polypropylene composition with low hardness, low friction coefficient and good touch feeling, its preparation method and application
A technology of polypropylene composition and low friction coefficient, which is applied in the field of low hardness, low friction coefficient and good touch polypropylene composition and its preparation, can solve the problems of increasing material friction coefficient and the influence of material touch, and achieve the reduction of friction coefficient, mechanical Excellent, low friction coefficient effect
Active Publication Date: 2022-05-10
KINGFA SCI & TECH CO LTD
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Problems solved by technology
The above-mentioned solutions all add soft materials, such as elastomers, to polypropylene. Although the increase in the content of elastomers can reduce the hardness of the material and achieve a soft touch, the increase in the content of the rubber phase will increase the coefficient of friction of the material, which will negatively affect the tactile feel of the material
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[0018] The technical solutions of the present invention will be further described below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention. The parts in the examples are all parts by weight unless otherwise specified. The methods used in the examples, such as injection molding, are conventional methods in the art unless otherwise specified.
[0019] The source of raw material used in embodiment and comparative example is as follows:
[0020] (1) The polypropylene resin is a copolymerized polypropylene, purchased from SK Korea, whose melt index is 100g / 10min under the test conditions of 230°C and 2.16kg; the melt index is tested according to the standard ISO 1133-1:2011;
[0021] (2) ...
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Abstract
The invention discloses a polypropylene composition with low hardness, low friction coefficient and good touch feeling, which comprises the following components in parts by weight: 42-57 parts of polypropylene resin, 20-35 parts of rubber phase elastic body, and 15-25 parts of glass fiber , 2-5 parts of compatibilizer, 0.2-0.4 part of external lubricant, 0.3-0.6 part of antioxidant and 0.2-0.4 part of light stabilizer, the solubility of the external lubricant in n-hexane at 80°C is ≤5mg / mL. By adding the above-mentioned external lubricant, the invention can effectively reduce the friction coefficient of the composition, and solve the problem that the addition of the elastomer to the polypropylene will increase the friction coefficient of the material. According to the formulation of the present invention, a polypropylene composition with good touch feeling simultaneously having low hardness, low coefficient of friction and excellent mechanics can be obtained.
Description
technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-hardness, low-friction coefficient and good-touch polypropylene composition, a preparation method and application thereof. Background technique [0002] Polypropylene, as one of the five general-purpose resins, has the advantages of light weight, easy processing, and good chemical resistance. Spray-free injection molded parts. However, with the development of the automobile industry, consumers have higher and higher requirements for the appearance quality of injection molded parts. For example, large automotive interior parts such as injection molding dashboards, door panels, and pillars are often not well received by consumers because of their high surface gloss, poor scratch resistance, and too hard materials. [0003] In order to prepare polypropylene materials with good touch, researchers have conducted various researches, among which, adding a c...
Claims
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IPC IPC(8): C08L23/14C08L23/08C08K7/14C08K5/09C08K5/20C08K13/04
CPCC08L23/14C08L2205/02C08L23/0815C08K7/14C08K5/09C08K5/20C08K13/04
Inventor 李伟黄险波叶南飚吴国峰胡佳旭俞飞陈嘉杰
Owner KINGFA SCI & TECH CO LTD