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Preparation method of modified PP composite material

A composite material and modification technology, which is applied in the field of plastic modification, can solve the problems of high impact resistance and failure to meet the use requirements, and achieve the effect of meeting the use requirements, excellent low temperature resistance, and expanding the application range

Inactive Publication Date: 2014-04-09
QINGDAO DADU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, none of the above-mentioned methods in the prior art can meet the requirements of use, especially for bumpers and instrument panels on automobiles, which require high impact resistance of materials at low temperatures, so the formulation of low-temperature-resistant reinforced PP composite materials is studied It is of great significance to improve the performance of the product and expand the application range of the product

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be further described below through specific embodiments.

[0031] The technical solution provided in this embodiment is: a method for preparing a modified PP composite material, which includes the following steps:

[0032] First, each component is stirred and mixed with a high-speed mixer according to the following parts by weight,

[0033] Homopolymer PP 25-40

[0034] Copolymer PP 30-49

[0035] Talc 15-25,

[0036] Cold Resistance 10-20,

[0037] Antioxidant 0.1-0.3

[0038] Lubricant 0.3-0.5

[0039] Coupling agent 0.1-0.5

[0040] Then transfer to a twin-screw extruder to melt and extrude, cool, and finally granulate to obtain the product.

[0041] Wherein, the homopolymer PP adopts T30S.

[0042] Wherein, the copolymerized PP adopts F800E.

[0043] Wherein, the cold resistance agent adopts dioctyl adipate, diisodecyl adipate, dioctyl azelate or dioctyl sebacate.

[0044] Among them, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyph...

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Abstract

The invention belongs to the technical field of plastic modification, and especially relates to a preparation method of a modified PP (polypropylene) composite material. The composite material is composed of the following raw materials by weight: 25-40 parts of homopolymerization PP, 30-49 parts of copolymerization PP, 15-25 parts of talcum powder, 10-20 parts of a cold resistant agent, 0.1-0.3 part of an antioxidant, 0.3-0.5 part of a lubricant and 0.1-0.5 part of a coupling agent. The preparation method comprises mixing, extruding and granulating. The composite material provided by the invention can still maintain good toughness at low temperature, and meets the usage requirements of PP composite material at low temperature.

Description

technical field [0001] The invention belongs to the technical field of plastic modification, and in particular relates to a preparation method of a modified PP composite material. Background technique [0002] Polypropylene (PP) is a general-purpose plastic resin with a wide range of sources and low prices, and has a very wide range of uses. It has high crystallinity and regular structure, so it has excellent mechanical properties. The absolute value of the mechanical properties of polypropylene is higher than that of polyethylene, but it is still a relatively low variety in plastic materials, and its tensile strength can only reach 30 MPa or a slightly higher level. Polypropylene with a larger isotactic index has higher tensile strength, but as the isotactic index increases, the impact strength of the material decreases, but it does not change after falling to a certain value. [0003] Temperature and loading rate have a great influence on the toughness of polypropyle...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K3/34C08K5/11B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08L23/12C08L23/14C08K13/02C08K3/34C08K5/11C08K5/1345B29C48/04B29C48/40B29C48/875B29C48/911B29C2948/92895B29C2948/92904
Inventor 赵成方
Owner QINGDAO DADU NEW MATERIAL TECH