Antistatic spray-free polypropylene composite material with low linear thermal expansion coefficient and preparation method of antistatic spray-free polypropylene composite material

A technology of thermal expansion coefficient and composite materials, which is applied in the field of antistatic spray-free polypropylene composite materials and its preparation, can solve the problems of limiting the application of spray-free polypropylene composite materials, unqualified appearance of products, and affecting the appearance of materials, etc., to improve the surface Antistatic property, shorter molding cycle, and improved antistatic properties

Active Publication Date: 2019-11-05
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the polypropylene material is a semi-crystalline material, the spraying technology can further ensure the dimensional stability of the polypropylene composite material, while the spray-free polypropylene has a high gloss surface and bright colors, and it is inevitable to produce

Method used

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  • Antistatic spray-free polypropylene composite material with low linear thermal expansion coefficient and preparation method of antistatic spray-free polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 50 parts of dried polypropylene PP-K7926, 20 parts of talc AH51210, 20 parts of toughening agent POE 8200, 0.2 parts of metallic pigments, 5 parts of functional additives (wollastonite whiskers: ATMER 129 =4:1), 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, 0.2 part of lubricant EBS, 0.3 part of coupling agent KH550, 0.1 part of light stabilizer V703, add the above materials into a high-speed mixer and mix evenly , and then add the mixed uniformly into the extruder, and cut into pellets after cooling with water. Among them, the processing temperature of the extruder is 180°C, 190°C, 195°C, 195°C, 200°C, 205°C, the rotation speed of the main engine is 180rpm, and the vacuum degree is -0.03MPa.

Embodiment 2

[0037] Weigh 70 parts of dry polypropylene PP-K9026, 10 parts of talc AH51210, 15 parts of toughening agent EPDM, 0.4 parts of metallic pigments, 1 part of functional additives (wollastonite whiskers: ATMER 129= 2:1), 0.1 part of antioxidant, 0.1 part of antioxidant DSTDP, 0.2 part of antioxidant 168, 0.2 part of lubricant calcium stearate, 0.3 part of coupling agent KH550, 0.3 part of light stabilizer V703, the above The powder and granules in the material are added to the high-speed mixer and mixed evenly, and then cut into granules after cooling with water. Among them, the processing temperature of the extruder is 180°C, 190°C, 195°C, 195°C, 200°C, 205°C, the main engine speed is 200rpm, and the vacuum degree is -0.05MPa.

Embodiment 3

[0039] Weigh out 60 parts of dry polypropylene PP-K9026, 34 parts of PP-BX3800, 5 parts of talc AH51210, 9 parts of toughening agent POE 8200, 1 part of metallic pigment, 4 parts of functional additives (silica fume) according to the weight ratio. Stone whiskers: ATMER 129=1:1), 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, 0.2 part of antioxidant 168, 0.2 part of lubricant EBS, 0.3 part of coupling agent KH550, 0.3 part of light stabilizer Add the above materials into a high-speed mixer and mix them evenly, then add the well-mixed mixture into an extruder, and cut into pellets after cooling with water. Among them, the processing temperature of the extruder is 180°C, 190°C, 195°C, 195°C, 200°C, and 205°C in sequence from the feeding port to the die port, the main engine speed is 350rpm, and the vacuum degree is -0.05MPa.

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Abstract

The invention discloses an antistatic spray-free polypropylene composite material with low linear thermal expansion coefficient and a preparation method of the antistatic spray-free polypropylene composite material. The antistatic spray-free polypropylene composite material is prepared by mixing and extruding polypropylene, mineral filling, a toughening agent, a functional assistant, a metal pigment, a coupling agent, an antioxidant, a lubricant and a light stabilizer. The functional assistant is prepared by compounding wollastonite whisker and glyceryl monostearyl ester according to the mixing mass ratio of 1:1 to 4:1. According to the antistatic spray-free polypropylene composite material, the polypropylene is compounded with the mineral filling and the toughening agent, the strength, rigidity and toughness of the composite material are ensured, in addition, the crystallization velocity is shortened and the degree of crystallization of the material is increased by adding the functional assistant, the post shrinkage of the product is lowered, the forming period of the product is shortened, meanwhile a conductive network is formed in the material, the material has a certain conductive performance, the surface antistatic property of the material is improved, and thus the modified polypropylene composite material can be widely used in spray-free products.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to an antistatic spray-free polypropylene composite material with low linear thermal expansion coefficient and a preparation method thereof. Background technique [0002] Polypropylene has the advantages of light weight, high cost performance, easy processing, oil resistance, acid and alkali resistance, etc., making it widely used in various industries. Driven by the lightweight process, each production stage is optimizing processes, reducing costs and improving production efficiency. [0003] Spray-free polypropylene composite materials are a class of materials that can be sprayed without spraying through direct injection molding. They achieve their special color effects by filling metal pigments, pearlescent pigments and other special effect pigments in the resin substrate, thereby eliminating the spraying process, improving the production efficiency, and redu...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L23/16C08K3/34C08K7/10C08K5/134C08K5/20C08K13/06C08K9/10C08K3/08C08K7/00
CPCC08L23/12C08L2201/04C08L2205/24C08L2205/025C08L23/0815C08L23/16C08K3/34C08K7/10C08K5/1345C08K5/20C08K13/06C08K9/10C08K3/08C08K7/00
Inventor 杨桂生王华梁娜朱敏
Owner HEFEI GENIUS NEW MATERIALS
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