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Microcrystal surface porous heat preservation ceramic composite material taking low-grade potassium feldspar as raw material and preparation method of composite material

A technology of thermal insulation ceramics and composite materials, which is applied in the field of building thermal insulation and decoration materials, can solve environmental pollution and other problems, and achieve the effects of reduced production costs, high hardness and flexural strength, and low cost

Inactive Publication Date: 2020-01-07
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to realize the high-efficiency utilization of non-metallic minerals and effectively solve the problem of environmental pollution caused by the stacking of mineral tailings, the present invention provides a low-grade potassium feldspar as the main raw material, which is prepared by high-temperature foaming process and has a microcrystalline decorative surface. Porous thermal insulation ceramic composite material

Method used

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  • Microcrystal surface porous heat preservation ceramic composite material taking low-grade potassium feldspar as raw material and preparation method of composite material
  • Microcrystal surface porous heat preservation ceramic composite material taking low-grade potassium feldspar as raw material and preparation method of composite material

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Experimental program
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Effect test

Embodiment 1

[0031] Preparation of microcrystalline surface porous thermal insulation ceramic composite material: put 200 g of low-grade potassium feldspar tailings powder and 1.6 g of silicon carbide powder into a ball mill and mill for 30 min; weigh 35 g of perlite, 28.13 g of alumina, 16.29 g of oxide Magnesium, 22.58 g of silicon dioxide, melted at high temperature and water-quenched into glass particles, then ball milled in deionized water, dried to obtain glass powder; 13 wt.% of Wet with water and stir evenly; put the wetted base material into the mold, pre-press 3 mm downwards, then fill in the wetted surface layer material, mold it under a molding pressure of 10MPa, and put it into a dry mold after demoulding. Dry the billets at 105 °C for 4 h in an oven to obtain a dry billet; put the dry billet into a high-temperature furnace and raise the temperature to 300 °C at a heating rate of 5 °C / min, keep it for 30 min, and then raise the temperature to 300 °C at a heating rate of 5 °C / mi...

Embodiment 2

[0033] Preparation of microcrystalline surface porous thermal insulation ceramic composite material: Put 200 g of low-grade potassium feldspar tailings powder and 2 g of silicon carbide powder into a ball mill and mill for 30 min; weigh 40 g of perlite, 27.37 g of alumina, 16.16 g of oxide Magnesium, 18.76 g of silicon dioxide, melted at high temperature and water-quenched into glass particles, then ball-milled and pulverized in deionized water, dried to obtain glass powder; 13 wt.% of Wet with water and stir evenly; put the wetted base material into the mold, pre-press 3 mm downwards, then fill in the wetted surface layer material, mold it at a molding pressure of 10 MPa, and put it into a dry mold after demoulding. Dry the billets at 105 °C for 4 h in an oven to obtain a dry billet; put the dry billet into a high-temperature furnace to raise the temperature to 300 °C at a heating rate of 15 °C / min, keep it warm for 30 min, and then raise the temperature at a heating rate of 1...

Embodiment 3

[0035]Preparation of microcrystalline surface porous thermal insulation ceramic composite material: put 200 g of low-grade potassium feldspar tailings powder and 2 g of silicon carbide into a ball mill, and ball mill for 30 min; weigh 50 g of perlite, 25.84 g of alumina, 15.90 g of magnesium oxide, 11.12 g of silicon dioxide was melted at high temperature and water-quenched to form glass particles, which were then ball-milled in deionized water and dried to obtain glass powders; 13 wt.% of hydration Wet, stir evenly; put the wetted base material into the mold, pre-press 3 mm downwards, then fill in the wetted surface layer material, mold it under a molding pressure of 15 MPa, and put it in a drying oven after demoulding Dry at 105 °C for 4 h to obtain a dry billet; put the dry billet into a high-temperature furnace to raise the temperature to 300 °C at a heating rate of 15 °C / min, keep it for 30 min, and then raise the temperature to 300 °C at a heating rate of 15 °C / min. 1210...

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Abstract

The invention discloses a microcrystal surface porous heat preservation ceramic composite material taking low-grade potassium feldspar as a main raw material and a preparation method of the compositematerial. The composite material comprises a porous heat preservation ceramic base body and a microcrystal surface layer; the base body takes low-grade potassium feldspar as a main raw material, and the main material of the surface layer comprises perlite, aluminum oxide, magnesium oxide and silicon dioxide; the composite material is prepared by adopting a secondary material distribution and primary high-temperature foaming method, and a foaming agent is silicon carbide. The heat conductivity coefficient of the base body layer is 0.060-0.097 W / (m*K), the base body layer has heat preservation and heat insulation functions, and the surface layer has a decoration effect. The composite material is low in cost, energy-saving and environment-friendly; the microcrystal surface layer greatly improves the mechanical properties of the composite material, can effectively inhibit the fusion and overflow of bubbles in the foaming process, improves the foaming effect, and reduces the consumption ofthe foaming agent. The composite material is formed by primary high-temperature foaming sintering, the process is simple and the preparation cost is low; heat preservation, heat insulation and decoration integration can be achieved in the building field.

Description

technical field [0001] The invention relates to the technical field of building thermal insulation and decoration materials, in particular to a porous thermal insulation ceramic composite material with a microcrystalline surface and a preparation method thereof using low-grade potassium feldspar as a raw material. Background technique [0002] The promotion and use of building thermal insulation materials can reduce the heat exchange between the interior and exterior of the building, effectively reduce the energy consumption in the process of building use, and is an effective means to achieve building energy conservation. There are many types of building insulation materials, which can be generally divided into organic insulation materials, inorganic insulation materials and composite insulation materials. Porous insulation ceramics are a kind of inorganic insulation materials. Porous thermal insulation ceramics have a rich pore structure inside, and the thermal conductivity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/19C04B38/02C03C6/04C03C10/00C04B41/85
CPCC03C1/00C03C10/0045C04B35/19C04B38/02C04B41/009C04B41/5023C04B41/85C04B2235/6562C04B2235/6567C04B41/4545C04B41/0072
Inventor 刘鹏王琦琦刘作冬于永生
Owner XINYANG NORMAL UNIVERSITY
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