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Composite hollow microbead material and its prepn

A technology of hollow microspheres and composite materials, which is applied in the treatment of dyed low-molecular organic compounds, etc., which can solve the problems of different interface conditions of hollow microspheres, difficulty in dispersing, and poor compatibility of organic polymer groups, and improve the reinforcing effect , Toughening effect improvement, cost reduction effect

Inactive Publication Date: 2002-01-23
北京空心微珠技术发展中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the hollow microspheres is relatively stable (inactive), if the hollow microspheres are added directly or in large quantities to polymer materials such as rubber, there are differences in the interface conditions between the hollow microspheres (inorganic fillers) and organic polymer groups, and poor compatibility. , and difficult to disperse in rubber and plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Filled rubber system hollow microsphere modified composite material

[0030] Weigh 2000g of hollow microsphere powder that has been ultrafinely pulverized and classified into 10μm, put it into a GRH-10 high-speed kneader, heat and stir for 10 minutes, and continue stirring for 5 minutes when the temperature of the material rises to 110°C; weigh KH Pour 5g of -550 coupling agent into a 200ml beaker, add 10% NH 4 OH solution to adjust pH to 20ml of ethanol solution of 8.5, and stir evenly. Spray the prepared modifier into the GRH-10 high-speed kneader in the form of mist, heat and stir for 15 minutes, and take out the material to obtain the silane-modified hollow microsphere composite material.

Embodiment 2

[0032] Weigh 2000g of hollow microspheres that have been ultrafinely pulverized and classified as 10μm, put them into a GRH-10 high-speed kneader, heat and stir for 10 minutes, and continue stirring for 5 minutes when the temperature of the material rises to 110°C; weigh titanic acid Pour 10g of ester NDZ-311 coupling agent and 15g of aluminate DL-411-A coupling agent into a 200ml beaker, add 25ml of No. 200 solvent oil, heat at 80°C to dissolve and stir evenly, and spray into GRH in a mist form -10 in a high-speed kneader, and then heated and stirred for 15 minutes. The material taken out is the hollow microbead composite material modified by mixing aluminate and titanate coupling agents.

[0033] sample

Tensile Strength

MPa

Elongation at break

%

tear strength

KN / m

wear volume

cm / 1.61m

Remark

10μm unmodified

5.6

484

26.0

1.06

Silane modification

22.4 ...

Embodiment 3

[0036] Embodiment 3: filling different kinds of rubber hollow microspheres modified composite materials

[0037] The composite hollow microspheres prepared by modifying the silane coupling agent KH-550 and filled with different types of rubber are shown in Table 2, and the preparation process is the same as in Example 1.

[0038] sample

[0039] Among different types of rubber, the reinforcing effect of composite hollow microspheres is more obvious.

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PUM

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Abstract

The composite hollow microbead material is composed of inorganic hollow powder microbead in 98-99.8 wt% and modifier in 0.2-2.0 wt%, the inorganic hollow powder microbead has size smaller than 20 microns, preferably, smaller than 10 microns; and the modifier is one of silicane coupling agent, titanate coupling agent and aluminate coupling agent or their mixture. The preparation process includes the steps of: grading of inorganic hollow powder microbead; stirring the separated hollow powder microbead in a high speed kneading machine for 10-15 min while heating to 90-120 deg.c; and mixing the prepared modifier and the hollow powder microbead through stirring for 10-15 min. The modified composite hollow microbead material has raised reinforcing and toughening effect and lowered cost.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a hollow microsphere composite material and a preparation method thereof. Background technique [0002] Hollow microspheres are aluminosilicate inorganic non-metallic powder materials extracted from volcanic ash or fly ash. Its main components are silicon dioxide and aluminum oxide, and its appearance is free-flowing light gray, gray, and yellow-brown. , observed under a microscope is a transparent hollow glass sphere. It has the characteristics of light weight, wear resistance, reflection, radiation protection, high temperature resistance, acid and alkali resistance, self-lubrication, etc. It has good dispersibility, rheology and chemical stability. It can be widely used as a functional filler in thermoplastic and thermosetting polymers. products based on base materials. [0003] As a functional filler for thermoplastic and thermosetting polymer material...

Claims

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Application Information

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IPC IPC(8): C08K9/02C09C3/08
Inventor 杜玉成黄坤良
Owner 北京空心微珠技术发展中心
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