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Thin-wall adhesion-facilitating polar polypropylene material and preparation method thereof

A polypropylene material and bonding technology, applied in the field of thin-walled and easily bonded polar polypropylene materials and their preparation, can solve the problems of low tensile strength and elongation at break, meet performance requirements, improve tensile strength, The effect of strong spray adhesion

Inactive Publication Date: 2018-03-16
LIUZHOU HAIDA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, by adding a small amount of polar additives and auxiliary polar additives, not only the adhesion between the material and the coating is enhanced, but also excellent mechanical properties are maintained, but there are problems of low tensile strength and elongation at break

Method used

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  • Thin-wall adhesion-facilitating polar polypropylene material and preparation method thereof
  • Thin-wall adhesion-facilitating polar polypropylene material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0035] The preparation method of the thin-walled easy-bonding polar polypropylene material comprises the following steps:

[0036] S1: Add barium sulfate into the high-speed mixer, seal, heat and stir. The heating temperature is 68-85°C, and the stirring time is 3-5min. Open the sealing cover to disperse the mist. After the moisture content of the barium sulfate is lower than 0.3%, add Rare earth coupling agent, sealed and heated for 8-10 minutes, the heating temperature is 68-82 ° C, after 4-6 minutes of activation, add PP, POE, maleic anhydride grafted PP, nano calcium carbonate, CPE, MBS, dispersant, nano Titanium carbide, nano-tungsten carbide, tungsten silicide, and tungsten powder are mixed and stirred evenly, and an antioxidant is added to them, and then mixed and stirred evenly to obtain a mixed material;

[0037] S2: Put the mixed material prepared in step S1 into a twin-screw extruder for mixing and plasticizing. The plasticizing temperature is 180-200°C. Finally, ex...

Embodiment 1

[0040] A thin-walled and easily bonded polar polypropylene material, including the following raw materials in mass percentage: PP42%, POE14%, maleic anhydride grafted PP7%, nano calcium carbonate 14.6%, CPE4.5%, MBS4.8%, barium sulfate 5%, rare earth coupling agent 2%, antioxidant 0.5%, dispersant 0.6%, nano-titanium carbide 2%, nano-tungsten carbide 1.6%, tungsten silicide 0.8%, tungsten powder 0.6%;

[0041] The PP is polypropylene;

[0042] The POE is a thermoplastic elastomer that uses metallocene catalysts to realize in-situ polymerization of ethylene and octene;

[0043] The maleic anhydride grafted PP is maleic anhydride grafted polypropylene, which can become a bridge to improve the adhesion and compatibility of polar materials and non-polar materials;

[0044] The CPE is chlorinated polyethylene;

[0045] The MBS is made of methyl methacrylate, butadiene and styrene terpolymer;

[0046] The rare earth coupling agent is rare earth coupling agent HY-041;

[0047] The ...

Embodiment 2

[0053] A thin-walled and easily bonded polar polypropylene material, including the following raw materials in mass percentage: PP50%, POE12.1%, maleic anhydride grafted PP6.5%, nano calcium carbonate 12.94%, CPE4%, MBS4%, barium sulfate 4%, rare earth coupling agent 1.8%, antioxidant 0.4%, dispersant 0.56%, nano-titanium carbide 1.4%, nano-tungsten carbide 1.2%, tungsten silicide 0.6%, tungsten powder 0.5%;

[0054] The PP is polypropylene;

[0055] The POE is a thermoplastic elastomer that uses metallocene catalysts to realize in-situ polymerization of ethylene and octene;

[0056] The maleic anhydride grafted PP is maleic anhydride grafted polypropylene, which can become a bridge to improve the adhesion and compatibility of polar materials and non-polar materials;

[0057] The CPE is chlorinated polyethylene;

[0058] The MBS is made of methyl methacrylate, butadiene and styrene terpolymer;

[0059] The rare earth coupling agent is rare earth coupling agent HY-041;

[00...

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Abstract

The invention discloses a thin-wall adhesion-facilitating polar polypropylene material, and belongs to the technical field of preparation of polypropylene composite materials. The thin-wall adhesion-facilitating polar polypropylene material is prepared from the following raw materials: PP (polypropylene), POE (polyene elastomer), maleic anhydride-grafted PP, nano calcium carbonate, CPE (chlorinated polyethylene), MBS (methyl methacrylate), barium sulfate, a rare earth coupling agent, an antioxidant, a dispersant, nano titanium carbide, nano tungsten carbide, tungsten silicide and tungsten powder; the polypropylene material is prepared by steps of mixing, plasticization, water-cooled bracing, granulation and the like. By the adoption of the process disclosed by the invention, the tensile strength, the elongation at break and the like of the thin-wall adhesion-facilitating polar polypropylene material can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite material preparation, and in particular relates to a thin-walled easily bondable polar polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene has always been concerned by the automobile industry and the plastics industry because of its advantages such as low density, high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. focus. Modified polypropylene materials for bumpers not only need good impact performance and processing performance, but also good paint adhesion performance. However, polypropylene is a non-polar material with low surface tension. The paint firmness of the bumper directly injection-molded with unmodified polypropylene material is insufficient. Scratch resistance, moisture resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L51/06C08L23/28C08L51/04C08K13/02C08K3/26C08K3/30C08K3/14C08K3/08C08K3/34
CPCC08L23/12C08K2003/0887C08K2003/265C08K2003/3045C08K2201/011C08K2201/014C08L2205/035C08L23/0815C08L51/06C08L23/286C08L51/04C08K13/02C08K3/26C08K3/30C08K3/14C08K3/08C08K3/34
Inventor 黄观李海航
Owner LIUZHOU HAIDA NEW MATERIAL TECH
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