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Method for toughening polypropylene by organic and inorganic hybrid core-shell nanoparticles

A nanoparticle, polypropylene technology, applied in the field of polymer material modification, can solve the problems of poor compatibility, material rigidity and tensile strength decrease, loss of rigidity and other problems, achieve good rigidity and toughness, wide application value, excellent increase The effect of toughness

Inactive Publication Date: 2019-02-12
慈溪市旭瑞塑料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When elastomers are used to toughen polypropylene, they are often used in large amounts, and the cost is relatively high, while low-amount inorganic nanoparticles can significantly improve the impact resistance of polypropylene, but the rigidity and tensile properties of the material are poor due to poor compatibility. decrease in tensile strength
These blending modification methods all improve the impact resistance of polypropylene to a certain extent, but often lose its excellent rigidity

Method used

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  • Method for toughening polypropylene by organic and inorganic hybrid core-shell nanoparticles

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Experimental program
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Embodiment 1

[0020] The present invention designs a novel core-shell nano-particle toughened polypropylene composite material, which includes the following components and weight percentages: 80-90 parts of polypropylene resin, 10-15 parts of core-shell nano-particles, and 1 part of antioxidant ~3 parts and 1~3 parts of dispersant are obtained by blending.

[0021] A method for preparing novel core-shell nanoparticles, comprising the following steps:

[0022] a. Preparation of surface-modified silica: Add silica nanoparticles into an organic solvent, add 2-bromoisobutyryl bromide drop by drop under an ice-water bath, and react for 6 hours after naturally rising to room temperature. In the above preparation process of surface-modified silica, the organic solvent is anhydrous dichloromethane.

[0023] b. Preparation of core-shell nanoparticles: Add the surface-modified inorganic nanoparticles obtained in step a into a polymerization bottle and dissolve them with anisole, then add CuBr, PMDET...

Embodiment 2

[0028] The present invention designs a core-shell nano-particle toughened polypropylene composite material, which includes the following components and weight percentages: 80-90 parts of polypropylene resin, 10-15 parts of core-shell nano-particles, 1-15 parts of antioxidant 3 parts and 1-3 parts of dispersant are obtained by blending.

[0029] A method for preparing novel core-shell nanoparticles, comprising the following steps:

[0030] a. Preparation of surface-modified silica: Add silica nanoparticles into an organic solvent, add 2-bromoisobutyryl bromide drop by drop under an ice-water bath, and react for 6 hours after naturally rising to room temperature. In the above preparation process of surface-modified silica, the organic solvent is anhydrous dichloromethane.

[0031] b. Preparation of core-shell nanoparticles: Add the surface-modified inorganic nanoparticles obtained in step a into a polymerization bottle and dissolve them with anisole, then add CuBr, PMDETA and m...

Embodiment 3

[0036] The present invention designs a core-shell nano-particle toughened polypropylene composite material, which includes the following components and weight percentages: 80-90 parts of polypropylene resin, 10-15 parts of core-shell nano-particles, 1-15 parts of antioxidant 3 parts and 1-3 parts of dispersant are obtained by blending.

[0037] A method for preparing novel core-shell nanoparticles, comprising the following steps:

[0038] a. Preparation of surface-modified silica: Add silica nanoparticles into an organic solvent, add 2-bromoisobutyryl bromide drop by drop under an ice-water bath, and react for 6 hours after naturally rising to room temperature. In the above preparation process of surface-modified silica, the organic solvent is anhydrous dichloromethane.

[0039] b. Preparation of core-shell nanoparticles: Add the surface-modified inorganic nanoparticles obtained in step a into a polymerization bottle and dissolve them with anisole, then add CuBr, PMDETA and m...

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Abstract

The invention discloses a method for toughening polypropylene by organic and inorganic hybrid core-shell nanoparticles. The method comprises the following steps of uniformly mixing 80 to 90 parts of polypropylene resin, 5 to 10 parts of core-shell nanoparticles, 1 to 3 parts of antioxidant, and 1 to 3 parts of dispersant in a high-speed mixing machine; mixing, extruding, and granulating, so as toobtain the toughened modified polypropylene composite material. A novel core-shell nanoparticle is synthesized, and is applied to the toughening and modifying of the polypropylene resin; the toughening effect is excellent. The obtained polypropylene toughening and modifying composite material has the advantages that the rigidity and toughness are good, the thermal stability is good, and the application value is wide.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a method for toughening polypropylene with organic-inorganic hybrid core-shell nanoparticles. Background technique [0002] Polypropylene is a high molecular polymer obtained by free radical polymerization of propylene monomers. According to the different polymerized monomers, it can usually be divided into homopolymerized polypropylene and copolymerized polypropylene. Due to the advantages of light weight, excellent performance, and easy molding and processing, it has become the fastest growing variety of the five general-purpose polymer materials, and is widely used in the fields of automobiles, construction, substrates, and medical equipment. [0003] However, the impact resistance of polypropylene, especially homopolypropylene, is poor, which limits its application range. The more direct method at present is to blend and modify the polypropylene matrix,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/10C08K5/134C08K5/09C08K5/098C08F292/00C08F220/14C08F220/18
CPCC08F292/00C08L23/12C08L2201/08C08L51/10C08K5/1345C08K5/09C08K5/098C08F220/1804
Inventor 黄健俊
Owner 慈溪市旭瑞塑料制品有限公司
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