Microcellular-foamed high-strength polypropylene composite material

A composite material, polypropylene technology, applied in the field of micro-foamed high-strength polypropylene composite materials, can solve the problems of high price, and achieve the effects of low cost, uniform cell distribution, and excellent physical and mechanical properties

Active Publication Date: 2017-01-04
SUZHOU RUNJIA ENGINEER PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although the materials of foreign companies (such as Basel, Borealis, etc.) started early, they are expensive. Therefore, in addition to improvi

Method used

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  • Microcellular-foamed high-strength polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh by weight: 100 parts of polypropylene, 0.001 part of tert-butyl peroxylaurate, 10 parts of K resin, NaHCO coated with polyurethane modified silicone resin 3 2 parts of foaming agent, 5 parts of talcum powder, 1 part of nonionic surfactant, cell stabilizer of propylene glycol fatty acid esters and calcium stearate, the particle size of talcum powder is 1000 mesh.

[0022] The polypropylene is melted first, then organic peroxide is added, and then the components other than the foaming agent are added to melt and blend to obtain the polypropylene matrix, and then the polypropylene matrix and the foaming agent are made into microplastics by injection molding. The foamed high-strength polypropylene composite material was subjected to a performance test of the prepared foamed material, and the test results are shown in Table 1.

Embodiment 2

[0024] Weigh in parts by weight: 100 parts of polypropylene, 0.006 parts of 2,5-dimethyl-2,5-bis(benzoylperoxy)hexane, 12 parts of K resin, polyalkylacrylate-coated NaHCO 3 3 parts of foaming agent, 10 parts of talcum powder, 3 parts of cell stabilizers of ethylene glycol and propylene glycol fatty acid esters and barium stearate, the particle size of talcum powder is 500 mesh.

[0025] The polypropylene is melted first, then organic peroxide is added, and then the components other than the foaming agent are added to melt and blend to obtain the polypropylene matrix, and then the polypropylene matrix and the foaming agent are made into microplastics by injection molding. The foamed high-strength polypropylene composite material was subjected to a performance test of the prepared foamed material, and the test results are shown in Table 1.

Embodiment 3

[0027] Weigh by weight: 100 parts of polypropylene, 0.003 parts of tert-butylperoxyisopropyl monocarbonate, 10 parts of K resin, NaHCO coated with polyurethane modified silicone resin 3 5 parts of foaming agent, 15 parts of talcum powder, 3 parts of pentaerythritol glycerol, cell stabilizer of propylene glycol fatty acid esters and calcium stearate, the particle size of talcum powder is 3000 mesh.

[0028] The polypropylene is melted first, then organic peroxide is added, and then the components other than the foaming agent are added to melt and blend to obtain the polypropylene matrix, and then the polypropylene matrix and the foaming agent are made into microplastics by injection molding. The foamed high-strength polypropylene composite material was subjected to a performance test of the prepared foamed material, and the test results are shown in Table 1.

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Abstract

The invention discloses a microcellular-foamed high-strength polypropylene composite material. The composite material is prepared from, by weight, 100 parts of polypropylene, 0.001-0.01 part of organic peroxide, 10-15 parts of K resin, 1-5 parts of an inorganic foaming agent coated with organic macromolecules, 5-15 parts of talcum powder and 1-5 parts of auxiliaries, wherein the auxiliaries comprise a surfactant, a foaming stabilizing agent and a thermal stabilizing agent, and the particle size of the talcum powder ranges from 100 mesh to 5,000 mesh. According to the microcellular-foamed high-strength polypropylene composite material, the raw materials adopted in the formula are easy to obtain and low in cost, especially the foaming agent NaHCO3 is economical and environmentally friendly, and the microcellular-foamed polypropylene material which is used for an automobile, has injection molding grade closed holes and is uniform in foam hole distribution, high in foaming rate and excellent in physical and mechanical properties can be prepared through cooperation of the foaming agent NaHCO3 and other components.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a micro-foaming high-strength polypropylene composite material. Background technique [0002] Based on the development needs and development status of the automobile industry, people have developed a polypropylene micro-foaming injection molding technology. This technology refers to the use of polypropylene material as the matrix, through the injection molding process, under the action of gas internal pressure, the middle layer of the product is densely covered with closed micropores with a size ranging from ten to tens of microns, and there are dense skin structures on both sides; thus To achieve the purpose of material saving and weight reduction. [0003] Although the weight of the micro-foamed PP material is significantly lighter than that of the unfoamed solid material after foaming, the rigidity and toughness of the material with the same thickness are correspondingly ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L25/10C08K3/34C08K5/098C08J9/08
CPCC08J9/08C08L23/12C08J2323/12C08L2203/14C08J2425/10C08L25/10C08K3/34C08K5/098
Inventor 汪理文李庆贵孙兆才董骏周明翁永华丁贤麟
Owner SUZHOU RUNJIA ENGINEER PLASTIC
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