Method for preparing inorganic polymer composite material by cold firing at low temperature and its ceramic application

A technology of inorganic polymers and composite materials, which is applied to the preparation of inorganic polymer composite materials by low-temperature cold sintering and its ceramization application field, can solve the problems of high sintering temperature and low mechanical properties of inorganic polymers, and achieves high temperature ceramization temperature and ceramization. The effect of low sintering densification temperature, promoting rearrangement and excellent mechanical properties

Active Publication Date: 2021-05-07
HARBIN INST OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low mechanical properties and high sintering temperature of existing inorganic polymers, and to provide a low-temperature cold sintering preparation of inorganic polymer composite materials and its ceramic treatment application

Method used

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Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0017] Specific embodiment one: the method for preparing inorganic polymer composite material by low-temperature cold firing in this embodiment is implemented according to the following steps:

[0018] 1. Preparation of dry powder of inorganic polymer and its composite material: uniformly mix silicate powder, aluminosilicate powder and second phase material by high-energy ball milling process, and obtain dry powder of inorganic polymer composite material after screening;

[0019] 2. Preparation of plastic inorganic polymer and its composite material: add 5-25wt% water to the dry powder of inorganic polymer composite material in step 1, and add 0.1-0.5wt% water reducing agent at the same time, stir mechanically to obtain plastic inorganic polymer object body;

[0020] 3. Molding of inorganic polymers and their composite materials: put the plastic inorganic polymer body into the mold, press molding in one direction, raise the temperature of the mold to 40-80°C, control the press...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 1, the rotational speed of the high-energy ball mill is 500-2000 rpm, and the milling time is 5-60 minutes.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the silicate powder is lithium silicate, sodium silicate, sodium metasilicate, potassium silicate, potassium metasilicate, silicon One or more mixtures of cesium acid.

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Abstract

A method for preparing an inorganic polymer composite material by cold firing at low temperature and its ceramic application. The present invention relates to a method for preparing an inorganic polymer composite material and its application. It solves the problem of low mechanical properties and high sintering temperature of existing inorganic polymers. The problem. Preparation method: 1. Mix silicate powder, aluminosilicate powder and the second phase material by high-energy ball milling process; 2. Add water and water reducer to the dry powder of inorganic polymer composite material, and stir it evenly to obtain plasticity Inorganic polymer green body; 3. The green body is pressurized and heat-preserved to form, and the pressure of pressurized forming is controlled to be 250-600Mpa; 4. The formed sample is placed in an oven for curing to obtain an inorganic polymer composite material. The inorganic polymer composite material is subjected to high-temperature ceramic treatment at a temperature of 400-800°C to obtain a ceramic product. The inorganic polymer composite material prepared by the invention has excellent mechanical properties and low high-temperature ceramization temperature.

Description

technical field [0001] The invention relates to a preparation method of an inorganic polymer composite material and its ceramic application. Background technique [0002] Inorganic polymers are polymerized from materials containing Si, Al and O elements in aqueous silicate or acidic phosphate solutions. Inorganic polymers have low density, and have the characteristics of low-temperature molding of complex-shaped components similar to resin materials, and can be directly transformed into ceramic materials with superior performance after appropriate high-temperature treatment, including cesium garnet, leucite, spodumene This has opened up a new way for low-cost preparation of complex shapes and high performance ceramic materials and their composite materials. [0003] Advanced ceramic materials prepared from inorganic polymers have broad application prospects in aerospace, national defense and military industries, especially in the medium temperature field (700-1200 ° C), whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B35/80C04B35/622C04B35/18C04B35/19C04B35/447
CPCC04B35/803C04B28/26C04B35/18C04B35/19C04B35/447C04B35/622C04B14/106C04B14/386C04B22/002C04B2103/302
Inventor 何培刚苑景坤段小明杨治华蔡德龙贾德昌周玉
Owner HARBIN INST OF TECH
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