Inorganic heat insulating dry powder

Abstract

The invention relates to a building material, in particular to inorganic thermal protection and insulation dry powder. The components of the dry powder in weight portion are as follows: 250 to 370 portions of vitrified ball, 70 to 130 portions of fly ash, 150 to 180 portions of gray calcium, 150 to 180 portions of coarse whiting, 5 to 20 portions of redispersion gelatine powder, and 4 to 8 portions of cellulose. The building material meets the modern management requirements on construction by relevant state departments, can be added with water which is 0.7 to 1.0 time of the weight portion of the dry powder at a construction site to have good workability, water retention property and sag resistance after being mixed evenly with the water, is easy to blow, paint and scrape, has strong adhesive force, can save the processes of prewetting a base layer, later water curing and the like, and does not sag in construction to save the material loss in the construction and improve the construction efficiency. After being tried in large regions in China, in particular in the areas with hot summer and cold winter, hot summer and warm winter, and cold regions, the building material adapts to severe weather environments with larger temperature changes, not only has good effects on thermal protection and insulation, sound insulation and energy conservation, but also meets or exceeds the standards of the state promulgated JG158-2004 'gelatine powder polyphenyl particle thermal insulation system for exterior walls' and GB / T20473-2006 'building thermal insulation materials'.

Description

technical field [0001] The invention relates to a building material, in particular to an inorganic thermal insulation dry powder. Background technique [0002] At present, there are mainly two types of thermal insulation building materials used at home and abroad to protect the (interior and external) walls of buildings: one is EPS and XPE polystyrene insulation boards; the other is rubber powder polystyrene particle insulation materials. In foreign countries, EPS and XPE polystyrene insulation boards are a plate structure that combines them with other materials, and is integrally fastened and installed on the building wall with glue and rivets. What our country is promoting is the insulation project that directly uses adhesives and rivets to attach EPS and XPE polystyrene insulation boards to the walls of buildings. Due to the vertical difference of the wall and the aging performance of the glue itself, the bonding strength and anti-aging performance of EPS and XPE polysty...

AI Technical Summary

Problems solved by technology

If the EPS and XPE polystyrene insulation boards are fastened to the wall with glue and rivets, it is easy to cause water seepage or damage to the wall of the building.

The second is that the polystyrene particles in the rubber powder polystyrene particle insulation material are organic materials, the material is light and have certain elasticity, it is difficult to make the rubber powder and polystyrene particles evenly distributed, resulting in poor affinity between polystyrene particles and cement, and When the temperature reaches about 30°, the polystyrene particles will soften, loosen, bulge, and fall off, so that the rubber powder polystyrene particle insulation material can only keep warm but has no heat insulation effect. When the temperature reaches above 80°, the glue Powdered polyphenylene particles will release a large amount of toxic and harmful volatile gases of benzene, which will bring serious pollution to the environment