Environmentally-friendly low-heat-conductivity-coefficient ultrafine glass fiber spraying cotton particle for building and preparation method thereof

Abstract

The invention relates to an environmentally-friendly low-heat-conductivity-coefficient ultrafine glass fiber spraying cotton particle for building and a preparation method thereof, and belongs to thetechnical field of glass fibers. The ultrafine glass fiber spraying cotton particle comprises the following components in percentage by mass: 57.5-67.5% of SiO2, 7-10.5% of R2O, wherein R is Na or K,3-6% of B2O3, 3.5-9% of CaO, 1.5-7% of Al2O3, 1-8% of MgO, 0.5-1.5% of Fe2O3, and not greater than 0.5% of ZnO+BaO. The ultrafine glass fiber spraying cotton particle is high in specific surface area,high in fluffiness, low in heat conductivity coefficient, and free from any aldehyde resin glue and processing additives, and meets the requirement of green and environmentally-friendly building materials; and meanwhile, the preparation processes are simple; the equipment requirements are small; the production cost is low; the yield is high; and massive production can be carried out.

Description

technical field [0001] The invention belongs to the technical field of glass fibers, and in particular relates to an environment-friendly low thermal conductivity superfine glass fiber spraying cotton particle for construction and a preparation method thereof. Background technique [0002] my country's building energy consumption accounts for about 30% of the total energy consumption, which is more than three times that of countries with the same level of development in the world. It is estimated that in the next five years, my country's new construction area will be about 1.6 to 2 billion square meters each year, and the newly added exterior wall area will be about 4 billion to 4.75 billion square meters. Therefore, the market demand for energy-saving thermal insulation materials will continue to grow rapidly in the future, and it is urgent to develop new environmentally friendly and efficient energy-saving thermal insulation materials for buildings. At the same time, a la...

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned three patents, the disclosed glass fiber sprayed cotton is attached with processing aids or nanoparticles, which not only complicates the production process of glass fiber sprayed cotton, but also increases the production cost.

At the same time, the fiber diameter of the produced glass fiber is too large, the uniformity and stability are poor, the thermal conductivity of the sprayed cotton is high, and the thermal insulation performance is unstable.

Processing aids can also cause harmful substances to be volatilized during the use of sprayed cotton, causing indoor pollution in buildings