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Modified mica powder and preparation method thereof

A technology of mica powder and modification, applied in the field of materials, can solve the problems of polymer mechanical property limitation, local stress concentration and so on

Inactive Publication Date: 2017-12-01
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the mica powder is added to the polymer, because of the sharp edges and corners on the surface of the mica powder, and because of the fusion problem between the two during the mixing process with the polymer, the inside of the polymer material added to the mica powder There is a problem of local stress concentration, which limits the improvement of the mechanical properties of the polymer

Method used

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  • Modified mica powder and preparation method thereof
  • Modified mica powder and preparation method thereof
  • Modified mica powder and preparation method thereof

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preparation example Construction

[0018] The application provides a preparation method of modified mica powder, comprising the following steps,

[0019] 1) Take a certain amount of butyl acrylate, mica powder, sodium persulfate, demulsifier and sodium dodecylbenzenesulfonate;

[0020] 2) Put the sodium persulfate, the sodium dodecylphenyl iodate, the butyl acrylate and the mica powder into the reaction kettle, react at 140-180°C for 6-12h, and then Then add the demulsifier to demulsify for 8-16 hours, filter and wash to obtain the modified mica powder.

[0021] The mass ratio of the butyl acrylate in step 1), the mica powder, the sodium persulfate, the demulsifier and the sodium dodecylbenzenesulfonate is (16-20): (40- 60):(0.3-0.5):(1-3):(0.1-0.3).

[0022] The demulsifier is ferric chloride or aluminum chloride.

[0023] The raw materials used in the embodiment of the application are as follows:

[0024] BA, Jiangsu Jurong Chemical; sodium persulfate, Fujian Haohua Inorganic Salt Co., Ltd.; ferric chlori...

Embodiment 1

[0028] 1) Weigh 1.6kg of butyl acrylate (BA), 4kg of mica powder, 30g of sodium persulfate, 100g of ferric chloride, and 10g of sodium dodecylbenzenesulfonate.

[0029] 2) Put sodium persulfate, sodium dodecylbenzenesulfonate, BA, and mica powder into the reaction kettle, react at 140°C for 6 hours, then add ferric chloride to break the emulsion for 8 hours, filter and wash to obtain the modified product Mica powder P1.

Embodiment 2

[0040] 1) Weigh 2kg of butyl acrylate (BA), 6kg of mica powder, 50g of sodium persulfate, 300g of aluminum chloride, and 30g of sodium dodecylbenzenesulfonate.

[0041] 2) Put sodium persulfate, sodium dodecylbenzenesulfonate, BA, and mica powder into the reaction kettle, react at 180°C for 12 hours, then add aluminum chloride to break the emulsion for 16 hours, filter and wash to obtain the modified product Mica powder P2.

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Abstract

The invention relates to modified mica powder and a preparation method thereof. The modified mica powder is composed of a mica powder body and polybutyl acrylate coating the surface of the mica powder body. According to the technical scheme, the mica powder grated by polybutyl acrylate can form an organic coating layer of polybutyl acrylate on the surface of the mica powder, and relatively high three-dimensional protecting action is generated to prevent agglomeration of the mica powder, so that the modified mica powder can be uniformly dispersed in a polyolefin matrix, and therefore, the mechanical property of a polyolefin composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a modified mica powder and a preparation method thereof. Background technique [0002] For a long time, mica powder has been widely used in polymer materials, and the use of mica powder to toughen and strengthen polymers is a new technical solution developed in recent years. [0003] However, when the mica powder is added to the polymer, because of the sharp edges and corners on the surface of the mica powder, and because of the fusion problem between the two during the mixing process with the polymer, the inside of the polymer material added to the mica powder There is a problem of local stress concentration, which limits the improvement of the mechanical properties of the polymer. Contents of the invention [0004] The purpose of the present invention is to provide a modified mica powder and a preparation method thereof, so as to solve the problem of agglomeration of the m...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/34C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06C09C1/40C09C3/10C09C3/08
CPCC08K3/34C08K9/10C08K2201/003C08K2201/011C09C1/405C09C3/006C09C3/08C09C3/10C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06
Inventor 刘凯孔俊王泉杰
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD