Preparation method of environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board

Abstract

The invention relates to a preparation method of an environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board and belongs to the technical field of ceramic fiber materials. Calcium silicate ceramic fibers are taken as base materials, an organic binding agent or an inorganic binding agent, a filler and an additive in appropriate proportion are added, and distributing, pulping, moulding, drying and follow-up machining are carried out, and thus the environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board is obtained. The environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board is characterized by comprising the following components in parts by weight: 50-80 parts of calcium silicate ceramic fibers, 0-20 parts of rock wool leftover material, 0-20 parts of expanded perlite, 5-20 parts of sepiolite fiber velvet, 5-20 parts of clay, 2-8 parts of resin powder, 1-5 parts of moistureproof agent, 0.2-2 parts of organic silicon moisture repellent and 0.01-0.5 part of additive. With adoption of the preparation method provided by the invention, safety and environmental protection problems of inorganic fiber building insulation boards are solved; the whole ageing resistance of the ceramic fiber building insulation board is improved; and waterproof and moistureproof properties of the ceramic fiber building insulation board are effectively improved.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly and anti-aging calcium silicate ceramic fiber building heat insulation board, which belongs to the technical field of ceramic fiber materials. Background technique [0002] Traditional Class A non-combustible building energy-saving materials include: [0003] 1. Mineral wool board, glass wool board [0004] This type of board mainly uses mineral wool and glass wool as thermal insulation materials. This type of material itself is non-combustible, light in weight, and has good thermal insulation effect, but it has the following disadvantages: [0005] ① Not anti-aging, strong water and moisture absorption, the fibers in the fiberboard are easy to pulverize after absorbing water and moisture. [0006] ② The strength of the board is poor, and the tensile strength perpendicular to the board surface is less than 5KPa, which cannot meet the minimum requirements of the external wall in...

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Problems solved by technology

[0006] ②The strength of the board is poor, and the tensile strength perpendicular to the board surface is less than 5KPa, which cannot meet the minimum requirements of the external wall insulation system, and can only be used for sandwich materials, not for external wall insulation systems

[0009] ①Water and moisture absorption is strong, and the strength of rock wool board decreases after water and moisture absorption

[0010] ②Dry-formed rock wool board, due to uneven glue spraying, may cause some rock wool fibers to be exposed. When the construction personnel touch it, it will irritate the skin, produce itching, and feel uncomfortable

[0011] Traditional A-level non-combustible building energy-saving materials have common shortcomings such as strong water absorption and moisture absorption, no anti-aging, and skin irritation

In addition, mineral wool boards and glass wool boards are not suitable for external wall insulation due to their low strength and aging resistance. Although rock wool boards have a high acidity coefficient and have certain aging resistance properties, they have strong water absorption and moisture absorption, which affects their strength. ; Part of the fiber is exposed, which irritates the skin when in contact with people, and has poor safety and environmental protection performance

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