Light burning-avoiding heat-insulating material and preparation method thereof

Abstract

The invention relates to a light burning-avoiding heat-insulating material and a preparation method thereof, and belongs to the field of heat-insulating materials for construction. The raw materials used in the method comprise the following compositions in mass percent: 40-50% of low-grade kieselguhr, 35-45% of a binding agent A, 5-10% of coal ash, 5-10% of a binding agent B, and 0.2-0.5% of a foaming agent. The manufacturing technology comprises the steps of raw material pre-treatment, material blending, molding and maintenance. According to the invention, the heat preservation material prepared by adopting the method has the characteristics of light weight, high strength, small heat conductivity coefficient, heat preservation, thermal insulation, excellent sound-proof performance, high temperature resistance, aging resistance, acid and alkali resistance, zero radioactivity, environmental protection, energy conservation and the like.

Description

technical field [0001] The invention relates to a light-weight non-burning thermal insulation material and a preparation method thereof, belonging to the field of building thermal insulation materials. Background technique [0002] The diatomaceous earth used in the present invention is a natural mineral raw material deposited from the remains of single-celled aquatic plant diatoms. The formation of diatomite ore has experienced thousands of years of geological changes. my country's diatomite reserves are very large, but the content of high-quality first-grade diatomite is gradually decreasing after years of continuous mining. According to the survey, most of the remaining low-grade diatomite (silicon content less than or equal to 85%) after being mined was discarded and idled, which not only took up a lot of space, but also affected the environment and caused a lot of waste of resources. Therefore, low-grade diatomite The development and use of soil is a major problem cur...

AI Technical Summary

Problems solved by technology

According to the survey, most of the remaining low-grade diatomite (silicon content less than or equal to 85%) after being mined is discarded and idle, which not only takes up a lot of space, but also affects the environment and causes a lot of waste of resources. Therefore, low-grade diatomite The development and use of soil is a major problem at present

[0003] At present, the commonly used thermal insulation materials in the building thermal insulation market and their characteristics are: expanded polystyrene board (EPS board), good thermal insulation effect, cheap price, but slightly weaker strength; extruded polystyrene board (XPS board), better thermal insulation effect, High strength, moisture resistance, expensive, the surface needs to be treated during construction; rock wool board, fireproof, flame retardant, high hygroscopicity, poor thermal insulation effect; rubber powder polystyrene particle thermal insulation slurry, good flame retardancy, waste recycling, thermal insulation The effect is not ideal, and the construction requirements are high; polyurethane foam material, good waterproof, good heat preservation effect, high strength, relatively expensive; perlite and other slurries have good fire resistance, poor high temperature heat preservation effect, high water absorption, but the price more expensive

[0004] Although the above-mentioned organic thermal insulation boards have good thermal insulation properties, they are flammable and have the disadvantages of poor fire resistance. Therefore, it is urgent to develop new inorganic building thermal insulation materials.

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