Moisture-proof sound-proofing expanded perlite and phenolic resin composite insulation board and preparation method thereof

Abstract

The invention discloses a moisture-proof and sound-insulating expanded perlite phenolic resin composite insulation board, which is made of the following raw materials in parts by weight: diethyl malonate 0.5-0.6, ethyl acetoacetate 0.4-0.5, polyisocyanate 2-2.4, 3, 5-lutidine 1.2-1.5, expanded perlite 55-57, phenolic resin 40-42, curing agent HMTA4-4.1, steel fiber 2-2.3, tetraethyl orthosilicate 10-11, 85wt% ammonia in proper amount , Appropriate amount of absolute ethanol, deionized water 160-180, appropriate amount of n-hexane, nano-polytetrafluoroethylene 4-4.5, cumene peroxide 0.1-0.2, trifluoroethyl acrylate 3-3.5. The invention modifies the expanded perlite by using diethyl malonate, ethyl acetoacetate, 3,5-lutidine and polyisocyanate, and forms small holes inside the perlite, which improves the moisture-proof and sound-proof insulation of the insulation board performance.

Description

technical field [0001] The invention relates to the technical field of thermal insulation wallboards, in particular to a moisture-proof and sound-insulating expanded perlite phenolic resin composite thermal insulation board and a preparation method thereof. Background technique [0002] Composite insulation materials (CompositeInsulationMaterials) are new materials that are uniformly composited by two or more insulation materials, usually referring to the composite of organic insulation materials and inorganic insulation materials, which have better performance than the original organic or inorganic materials. This paper makes full use of the advantages of abundant perlite mineral resources in Xinyang, uses expanded perlite (Expended Perlite, EP) and phenolic resin (Phenol-formaldchyde Resin, PF) as the main raw materials, and adds an appropriate amount of curing agent, toughening agent and hydrophobic agent. agent, hot-pressed under certain conditions, prepared into expande...

AI Technical Summary

Problems solved by technology

[0003] However, expanded perlite has a high water absorption rate and poor water resistance, which leads to large volume shrinkage and deformation of the thermal insulation mortar during mixing, and the thermal insulation performance of the product is reduced in the later stage, and the bonding strength with the matrix is ​​low, which affects the thermal insulation performance of the wallboard in the later stage.