Thermal insulating material and preparation method thereof

Abstract

The invention discloses a thermal insulating material. The thermal insulating material is prepared from the following raw materials in parts by weight: 40-55 parts of pitchstone glazed bead, 4-5 parts of light-weight magnesium oxide, 0.5-1.2 parts of sodium fluorosilicate, 0.4-1 part of aluminum dihydrogen phosphate, 0.2-0.5 part of polyvinyl alcohol, 0.6-0.8 part of kaolin, 2-2.5 parts of fly ash, 2-3 parts of attapulgite, 2.5-3.5 parts of sepiolite fibre, 1-1.5 parts of disodium sulfosuccinate and 2-3 parts of cement. As for the thermal insulating material prepared from the raw materials in proportions, disclosed by the invention, the dry density can be less than 400kg / m<3>, the thermal conductivity can be less than 0.085W / (m.k), and the fireproof performance can reach the national A2-level requirements. In addition, the thermal insulating material has excellent characteristics of high strength, aging resistance and sound absorption, and is long in service life.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a thermal insulation material and a preparation method thereof. Background technique [0002] Insulation engineering has the functions of saving energy, reducing energy consumption, reducing the emission of harmful substances, and improving people's living environment. It has gradually become the focus of government departments and scientific circles around the world. Especially in today's environment where energy is increasingly scarce, the importance of thermal insulation projects is becoming more and more prominent. [0003] From the perspective of material combustion, the insulation materials currently used for external wall insulation systems mainly include the following three categories, namely: [0004] Inorganic thermal insulation materials: rock wool, glass wool, thermal insulation slurry of expanded vitrified microbeads, etc., which are non-combustible mater...

AI Technical Summary

Problems solved by technology

However, other properties of inorganic thermal insulation materials cannot fully meet the requirements of external thermal insulation. Therefore, it is necessary to mix it with other materials and prepare thermal insulation materials with good insulation and flame retardancy through special treatment.