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A kind of mica composite filler, preparation method and application thereof

A technology of composite filler and mica, which is applied in the field of materials and can solve problems such as stress concentration of composite materials

Inactive Publication Date: 2019-02-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a mica composite filler, its preparation method and its application, to solve the problem of local stress concentration inside the composite material

Method used

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  • A kind of mica composite filler, preparation method and application thereof
  • A kind of mica composite filler, preparation method and application thereof
  • A kind of mica composite filler, preparation method and application thereof

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preparation example Construction

[0028] The preparation method of above-mentioned mica composite filler, comprises the following steps:

[0029] 1) Dry the mica powder in an oven at 90-110°C for 3-5 hours to fully remove the adsorbed water on the surface of the mica powder for later use;

[0030] 2) Add sodium metatitanate, dried mica powder and polyethylene glycol into ethanol aqueous solution, and completely dissolve the mica powder in a constant temperature water bath at a temperature of 80-100°C for 10-12 hours;

[0031] 3) Slowly add saturated ammonium chloride solution dropwise under the stirring state of an electric stirrer, and after standing for 2 hours, centrifuge, filter, dry, and pulverize to obtain the mica composite filler.

[0032] The mass ratio of sodium metatitanate, mica powder, polyethylene glycol and saturated ammonium chloride solution is (40-60):(120-180):(4-8):(20-30).

[0033] An application of a mica composite filler, wherein any one of the above mica composite fillers is used to mo...

Embodiment 1

[0035] 1) Dry the muscovite with a particle size of 6 μm in an oven at 90° C. for 3 hours to fully remove the adsorbed water on the surface of the mica powder for future use.

[0036] 2) Put 400g of sodium metatitanate, 1.2kg of mica powder and 40g of polyethylene glycol into an aqueous ethanol solution, and put the mica powder into a constant temperature water bath at 80°C for 10 hours to completely dissolve the mica powder.

[0037] 3) Slowly add 200 g of saturated ammonium chloride solution dropwise under stirring with an electric stirrer, let stand for 2 hours, centrifuge, filter, dry, and pulverize to obtain the mica composite filler P1.

Embodiment 2

[0048] 1) Dry the muscovite with a particle size of 10 μm in an oven at 110° C. for 5 hours to fully remove the adsorbed water on the surface of the mica powder for future use.

[0049] 2) Put 600g of sodium metatitanate, 1.8kg of mica powder and 80g of polyethylene glycol into an aqueous ethanol solution, and put the mica powder into a constant temperature water bath at 100°C for 12 hours to completely dissolve the mica powder.

[0050] (3) Slowly add 300 g of saturated ammonium chloride solution dropwise under stirring with an electric stirrer, let it stand for 2 hours, then centrifuge, filter, dry, and pulverize to obtain the mica composite filler P2.

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Abstract

The invention relates to mica compound filler as well as a preparation method and application thereof. The mica compound filler is prepared from mica powder and nano TiO2 which covers the surface of the mica powder; after the nano TiO2 covers the mica powder, the outer surface of the nano TiO2 is a rough surface. According to the mica compound filler provided by the technical scheme of the invention, after the nano TiO2 covers the surface of the mica powder, sharp edges and corners on the surface of the previous mica powder become blunt, and the smooth outer surface of mica powder crystals also becomes rough, so that the problem that local stress in a composite material is concentrated is solved. Meanwhile, interface acting force between the filler and a polyolefin matrix is also enhanced by the nano TiO2 which covers the surface of the mica powder, so that 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 novel mica composite filler, a preparation method and an application 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 mica composite filler, its preparation method and its application, so as to solve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/34C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06
CPCC08K3/34C08K9/10C08K2201/003C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06
Inventor 刘凯王泉杰王添琪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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