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A kind of impact copolymer polypropylene/non-modified montmorillonite composition and its preparation method and its composite material and application

A technology of impact-resistant copolymerization and composite materials, applied in the field of polymer materials, can solve the problems of many additives and increase product cost, etc.

Active Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But carry out organic treatment to montmorillonite like this, need more auxiliary agent, improve the cost of product

Method used

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  • A kind of impact copolymer polypropylene/non-modified montmorillonite composition and its preparation method and its composite material and application
  • A kind of impact copolymer polypropylene/non-modified montmorillonite composition and its preparation method and its composite material and application
  • A kind of impact copolymer polypropylene/non-modified montmorillonite composition and its preparation method and its composite material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Sodium-based non-modified montmorillonite (Zhangjiakou Qinghe Chemical Factory, Hebei) and deionized water were ultrasonically mixed at a weight ratio of 7:93 until fully mixed, and a non-modified montmorillonite that was observed for 10 days without stratification and precipitation was obtained. Aqueous suspension; then measure sodium-based non-modified montmorillonite and impact copolymer polypropylene (SP179, Qilu Petrochemical, total ethylene content 13%wt, pore size 500nm~50μm) weight ratio 0.3:100 Aqueous montmorillonite solution; in the vacuum stirring device, first put the impact copolymer polypropylene into the three-necked bottle, and stir it under vacuum for 5 minutes. After the vacuum degree of the container reaches the standard, slowly add the sodium montmorillonite to the impact copolymer polypropylene After the addition, continue to stir for 5 minutes, turn off the vacuum stirring device; pour the above-mentioned impact copolymer polypropylene powder / sodiu...

Embodiment 2

[0060] Except that the weight ratio of sodium-based non-modified montmorillonite and impact copolymer polypropylene is 0.5:100, all the others are the same as in Example 1, and the test results show that the impact strength of pure impact copolymer polypropylene is 15.4kJ / m 2 , the impact strength of the impact copolymer polypropylene / sodium-based non-modified montmorillonite nanocomposite is 23.4kJ / m 2 , The impact strength was increased by 51.9%. Other mechanical test results are listed in Table 1.

Embodiment 3

[0062] Except that the weight ratio of sodium-based non-modified montmorillonite and impact copolymer polypropylene is 0.7:100, all the others are the same as in Example 1, and the test results show that the impact strength of pure impact copolymer polypropylene is 15.4kJ / m 2 , the impact strength of the impact copolymer polypropylene / sodium-based non-modified montmorillonite nanocomposite is 27.1kJ / m 2 , the impact strength increased by 76.0%, other mechanical test results are listed in Table 1.

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Abstract

The invention relates to an impact-resistant copolymerized polypropylene / non-modified montmorillonite composition in the field of polymer materials, a composite material, a preparation method and an application thereof. The composition is obtained by fully mixing the non-modified montmorillonite suspension with the impact copolymer polypropylene powder and then drying; in the composition, the non-modified montmorillonite is distributed on the surface of the impact copolymer polypropylene powder particles and in the pores on the particle surface. The impact copolymerized polypropylene powder is prepared by spherical catalyst and does not contain antioxidant. The composition obtained after melting and shearing granulation is an impact copolymerized polypropylene / non-modified montmorillonite composite material. The non-modified montmorillonite in the composite material can reduce the particle size of the impact copolymerized polypropylene rubber phase, thereby improving the impact strength of the composite material without reducing the rigidity and heat resistance of the material; the composition of the present invention and its composite material The preparation method is simple, the cost is low, and it is easy to be industrialized; it can be applied to fields such as automobile interior and exterior trim parts, household appliance parts and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more particularly relates to a composite material of copolymerized polypropylene and non-modified montmorillonite with good rigidity and toughness and a preparation method thereof. Background technique [0002] Although polypropylene has the advantages of low density, good heat resistance, high rigidity and hardness, good processability, non-toxic and tasteless, etc., its toughness is poor, especially sensitive to notches. These characteristics limit the application of polypropylene in some fields. application. The methods of toughening and modifying polypropylene mainly include blending and toughening modification and direct production of toughened polypropylene by in-reactor polymerization. The blending toughening modification method usually adopts the method of melt blending rubber and polypropylene, that is, adding unvulcanized rubber or thermoplastic elastomer to toughen polyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08K3/34
CPCC08K3/346C08L23/14
Inventor 乔金樑王崧合张晓红戚桂村宋志海蔡传伦王湘赖金梅李秉海蒋海斌茹越张江茹高建明张红彬韩朋刘文璐
Owner CHINA PETROLEUM & CHEM CORP