Water-preserving materials and process for preparing same

Abstract

The invention discloses a new thermal insulation material and its preparing method, that includes the materials in weight portion as follows: 20-70 portions of perlite, 2-15 portions of fiber, 15- 70 portions of magnesium oxide, 5-20 portions of magnesium sulfate, 2-8 portions of magnesium chloride, 0.5-2 portions of foaming agent, 2-15 portions of bonding agent, 10-80 portions of urea-formaldehyde resin. As confirmed by the experiment, the thermal insulation in the invention has the advantages of heat preservation, heat insulation, fireproof, moisture proof, sound insulation, non-dispersed in water, and can be used broad in the area of architecture, chemical engineering, storage, and high or low temperature tube.

Description

technical field

[0001] The invention relates to a thermal insulation material, in particular to a thermal insulation building material mainly prepared from perlite, a preparation method and application thereof. Background technique

[0002] At present, the common thermal insulation materials on the market mainly include the following types: expanded perlite materials, polystyrene particle composite silicate materials, fly ash ceramsite materials, etc. my country has produced expanded perlite insulation materials for 30 years, with an annual output of 6 million m 3 , but the variety is always a single porous structure product. Expanded perlite is a granular product with extremely irregular shape, many holes, gaps, unevenness and incoherent surface. This structural feature makes the material brittle, with high compression ratio and low strength. The rate can be as high as 500%, and these shortcomings greatly reduce the thermal insulation performance and service life of expan...