Preparation method for chopped silicon carbide fiber reinforced aluminosilicate polymer composite material

A technology of chopped silicon carbide and aluminosilicate, which is applied in the field of composite material preparation, can solve the problems of brittleness, low mechanical strength, toughness, and limitations, and achieve excellent mechanical properties, improved thermophysical properties, high strength and toughness Effect

Inactive Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the inherent brittleness, low mechanical strength and toughness of existing aluminosilicate polymer materials, which seriously limits its wide application in the field of high-tech materials that require a certain load capacity and high reliability, and provides Preparation method of chopped silicon carbide fiber reinforced aluminosilicate polymer composite

Method used

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  • Preparation method for chopped silicon carbide fiber reinforced aluminosilicate polymer composite material
  • Preparation method for chopped silicon carbide fiber reinforced aluminosilicate polymer composite material
  • Preparation method for chopped silicon carbide fiber reinforced aluminosilicate polymer composite material

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specific Embodiment approach 1

[0021] Embodiment 1: The preparation method of the chopped silicon carbide fiber reinforced aluminosilicate polymer composite material described in this embodiment is completed according to the following steps:

[0022] 1. Calcining the aluminosilicate raw material at a temperature of 600°C to 900°C for 1h to 5h to obtain an active aluminosilicate raw material;

[0023] 2. Ball milling and mixing the active aluminosilicate raw material and chopped silicon carbide fiber at room temperature for 24h to 48h to obtain a ball milling mixture;

[0024] The length of the chopped silicon carbide fibers is 2 mm to 10 mm, and the volume percentage of the chopped silicon carbide fibers in the ball milling mixture is 0.5% to 5%;

[0025] 3. Add the alkali metal hydroxide into the silica sol, and stir it magnetically for 48 hours to obtain the alkali excitation solution;

[0026] The mol ratio of described alkali metal hydroxide and silicon dioxide in the silica sol is 1:1;

[0027] 4. Mi...

specific Embodiment approach 2

[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the aluminosilicate raw material in step 1 is kaolin, clay, fly ash or blast furnace slag. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the alkali metal hydroxide described in step 3 is sodium hydroxide, potassium hydroxide or cesium hydroxide. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a preparation method for a chopped silicon carbide fiber reinforced aluminosilicate polymer composite material, and relates to the preparation method for composite materials. The preparation method provided by the invention is to solve the problem of severe limitation of a conventional aluminosilicate polymer material extensively applied in the field of high-tech materials demanding a certain loading capacity and high reliability due to inherent brittleness and low mechanical strength and toughness of the conventional aluminosilicate polymer material. The preparation method for the chopped silicon carbide fiber reinforced aluminosilicate polymer composite material is realized through the following steps: 1, preparation of a raw material, i.e., active aluminosilicate; 2, preparation of a ball-milled mixture; 3, preparation of an alkali-activation solution; 4, preparation of an aluminosilicate polymer material slurry; and 5, curing. The preparation method provided by the invention is used for preparation of the chopped silicon carbide fiber reinforced aluminosilicate polymer composite material.

Description

technical field [0001] The invention relates to a method for preparing composite materials. Background technique [0002] Aluminosilicate polymer materials have been applied in the fields of construction and refractory materials due to their low density, low cost, flame retardancy, and the ability to be prepared at low temperatures but used at high temperatures, and are considered to be the most It is one of the materials that are expected to replace polymer materials and be used in spacecraft, ships, and interior cabins of automobiles. However, its inherent brittleness, low mechanical strength and toughness severely limit its wide application in the field of high-tech materials that require a certain load capacity and high reliability. In recent years, scholars from various countries have greatly improved their toughness and expanded their application fields by introducing reinforcements into aluminosilicate polymers. Contents of the invention [0003] The present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B14/38C04B22/06C04B22/062
Inventor 何培刚苑景坤贾德昌杨治华段小明王胜金周玉
Owner HARBIN INST OF TECH
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