Water-proof, high-strength, weather resistance, flame-retardant and environment-friendly thermal insulation board and preparation method thereof

Abstract

The invention discloses a water-proof, high-strength, weather resistance, flame-retardant and environment-friendly thermal insulation board and a preparation method thereof. The thermal insulation board is prepared from the following raw materials in parts by weight: 30-40 parts of modified straw, 6-8 parts of fly ash, 7-9 parts of calcined gypsum powder, 10-14 parts of ore filler, 8-12 parts of silica sol, 6-8 parts of thermal insulation additive, 7-9 parts of polyvinyl alcohol, 4-6 parts of acrylic emulsion, 3-5 parts of modified nano additive, 5-7 parts of a gel material, 0.3-0.5 part of cellulose ether and 7-9 parts of fire-proof and flame-retardant additive. The thermal insulation board disclosed by the invention adopts a large amount of wastes, saves the resources, protects the environment, is high in material compressive strength, superior in weather resistance and excellent in humidity resistance, low in heat conductivity coefficient and good in thermal insulation effect, and also has a certain sound insulation effect at the same time; and furthermore, the preparation method disclosed by the invention has the advantages that the material cost is lower, the raw materials areeasy to obtain, the process is concise, the practical value is higher, and the application prospects are good.

Description

technical field [0001] The invention relates to the technical field of building thermal insulation materials, in particular to a waterproof, high-strength, weather-resistant, flame-retardant and environmentally friendly thermal insulation board and a preparation method thereof. Background technique [0002] On the one hand, building insulation engineering construction is an important part of energy-saving buildings. After the building insulation construction is completed, it is easier to adjust and maintain the indoor temperature, build a comfortable indoor environment that is warm in winter and cool in summer, and reduce the energy consumption of indoor environment temperature adjustment. , very energy-saving and environmentally friendly. The construction of building thermal insulation works is usually carried out in the form of pasting thermal insulation boards on the outer walls of buildings or indoors. Some buildings are also built with thermal insulation blocks in the m...

AI Technical Summary

Problems solved by technology

However, the materials currently used are not ideal in various properties, especially in terms of heat preservation, acid and alkali resistance, and weather resistance, which cannot meet people's needs.

At present, the insulation materials on the market generally have hidden dangers such as large specific gravity, high thermal conductivity, poor bonding performance, and easy falling off.

[0004] In addition, although organic thermal insulation materials have better fire prevention and heat insulation effects, they have been proved to have a short service life in use, and their thermal insulation performance will continue to decrease as the service life increases; while inorganic thermal insulation materials are non-combustible materials, which meet the requirements of external wall thermal insulation materials. The development trend of the country and the requirements of relevant national laws and policies, but the thermal insulation can vary greatly

Commonly used mineral wool and glass wool products have low bulk density and low compressive strength, which limit their application in external wall insulation construction; the thermal conductivity of hydrophobic perlite board is low, but this type of product is fragile and the overall strength is not good; moreover , judging from the current production process of various inorganic thermal insulation materials, most of them adopt discontinuous production, and the production efficiency is low.