A kind of expanded perlite insulation board and its production method

Abstract

The invention discloses an expanded perlite insulation board and a production method thereof. The expanded perlite insulation board comprises the following components in parts by weight: 18 to 25 parts of cement, 5 to 8 parts of fly ash, 2 to 5 parts of methyltrimethoxysilane, 5 to 10 parts of a polyacrylate emulsion, 50 to 70 parts of expanded perlite, 0.7 to 2.9 parts of sodium dodecyl benzene sulfonate, 5 to 10 parts of an additive and 10 to 20 parts of water. The expanded perlite insulation board provided by the invention uses cement, fly ash and organic and inorganic matters as raw materials, so industrial and mineral waste materials are effectively utilized; meanwhile, no toxic and harmful substance is added, so greenness and environmental protection are achieved. Experiment results show that the expanded perlite insulation board provided by the invention has the dry density less than 190 kg / m3, the compressive strength more than 0.6 MPa, the heat conductivity coefficient less than 0.053 W / (m.k), the flexural strength more than 0.5 MPa, the mass water content less than 4.5%, the tensile strength perpendicular to the direction of board surface more than 0.25 MPa, the volume water absorption rate less than 8.8%, the softening coefficient more than 0.88, the mass loss rate less than 4%, the compressive strength loss rate less than 23% and the hydrophobic rate more than 96%.

Description

technical field [0001] The invention relates to an expanded perlite insulation board and a production method thereof, belonging to the technical field of building materials. Background technique [0002] Building energy conservation is an industry supported by the national industrial policy. At present, building energy-saving materials are mainly divided into inorganic thermal insulation lightweight aggregates and organic thermal insulation lightweight aggregates. However, due to the characteristics of the chemical properties of materials, no matter whether it is an inorganic system or an organic system, it is impossible to meet the requirements of thermal insulation and energy saving performance and fire safety at the same time: from In terms of thermal insulation performance, organic materials are superior to inorganic materials; in terms of fire safety performance, Class A flame-retardant thermal insulation materials are the best choice. In recent years, expanded perlite...

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Problems solved by technology

However, due to various reasons, the application of expanded perlite insulation board is still subject to some restrictions.

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