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

A technology of thermal expansion coefficient and composite material, which is applied in the field of antistatic spray-free polypropylene composite material and its preparation, can solve the problems of unqualified appearance of products, restrict the application of spray-free polypropylene composite material, affect the appearance of materials, etc., and improve the surface The effect of antistatic properties, shortening molding cycle, and improving antistatic properties

Active Publication Date: 2022-05-10
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 in the process of production, transportation and use. Static electricity, thus absorbing dust, seriously affecting the appearance of the material, resulting in unqualified appearance of the product
These disadvantages severely limit the application of spray-free polypropylene composites

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 50 parts of dry polypropylene PP-K7926, 20 parts of talcum powder AH51210, 20 parts of toughening agent POE 8200, 0.2 part of metal pigment, 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 well , and then put the evenly mixed mixture 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 from the feeding port to the die port, the main engine speed is 180rpm, and the vacuum degree is -0.03MPa.

Embodiment 2

[0037] Weigh 70 parts of dry polypropylene PP-K9026, 10 parts of talcum powder AH51210, 15 parts of toughening agent EPDM, 0.4 part of metallic pigment, 1 part of functional auxiliary agent (wollastonite whisker: 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 pellets in the material are added to a high-speed mixer and mixed evenly, and then pelletized after water cooling. Among them, the processing temperature of the extruder is 180°C, 190°C, 195°C, 195°C, 200°C, 205°C from the feeding port to the die port, the speed of the main machine is 200rpm, and the vacuum degree is -0.05MPa.

Embodiment 3

[0039] Weigh 60 parts of dry polypropylene PP-K9026, 34 parts of PP-BX3800, 5 parts of talcum powder AH51210, 9 parts of toughening agent POE 8200, 1 part of metallic pigment, 4 parts of functional additives (silica fume Stone whisker: 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 For agent V703, add the above materials into a high-speed mixer and mix them evenly, then add the evenly mixed mixture into the extruder, and cut into pellets after water cooling. Among them, the processing temperature of the extruder is 180°C, 190°C, 195°C, 195°C, 200°C, 205°C 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 thereof, which comprises polypropylene, mineral filling, toughening agent, functional auxiliary agent, metal pigment, coupling agent and antioxidant , lubricant, light stabilizer, prepared by mixing and extruding. The functional additive is compounded by wollastonite whiskers and glycerol monostearyl in a mass ratio of 1:1 to 4:1. The present invention uses polypropylene and mineral fillers and toughening agents to compound to ensure the strength, rigidity, and toughness of the composite material. In addition, the crystallization speed and crystallinity of the material are improved by adding functional additives, reducing the post-shrinkage of the product, shortening the The product molding cycle is shortened, and at the same time, a conductive network is formed inside the material, so that the material has a certain conductivity, and the surface antistatic property of the material is improved, so that 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, and in particular relates 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 the process, reducing costs, and improving production efficiency. [0003] Spray-free polypropylene composite material is a kind of material that can achieve spray effect by direct injection molding without spraying. They achieve their special color effects by filling the resin base material with special effect pigments such as metallic pigments and pearlescent pigments, thereby eliminating the need for spraying processes, improvin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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