A kind of straw sandwich silicon-calcium composite board and its preparation method

Abstract

The invention discloses a straw sandwich calcium silicate composite board and a preparation method thereof. The straw sandwich calcium silicate composite board includes a core board, connecting pieces, and a calcium silicate board; the core board is a straw board; the section of each connecting piece has a shape of a dovetail groove, narrower ends of the connecting pieces are connected on two side faces of the core board, and the connecting pieces are arranged on the two sides of the core board in a staggered manner; the connecting pieces and the core board are integrally molded; the calcium silicate board covers the exterior of the core board and is molded through casting; one end of the calcium silicate board is provided with a raised ridge, and the other end of the calcium silicate board is provided with a groove adaptive to the size of the raised ridge. The composite board effectively utilizes straw wastes to prepare the board, reduces environmental pollution caused by straw burning, saves materials, and conforms to a resource-saving environmentally-friendly type development strategy. The prepared composite board has good sound-insulation heat-insulation properties, moisture resistance and high strength performance, and in addition, has good fireproof performance and a humidity adjusting function.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a preparation method of a straw sandwich silicon-calcium composite board. Background technique [0002] A non-load-bearing interior wall in a building is called a partition wall. The basic requirement for the partition wall is that its mass is small so as to reduce the load on the floor and the floor, and the thickness is thin so as to increase the usable area of ​​the building; sound insulation, water resistance, fire resistance, etc. are required according to the specific environment. [0003] In Chinese patent 201310191338.5, a light-weight partition wall panel is disclosed, which includes: a steel wire grid, the steel wire grid is filled with polyurethane foam, and a fireproof board is stuck outside the steel wire grid. The fireproof board is gypsum board or fireproof wood board. The partition panels are strong, lightweight and fireproof, a...

AI Technical Summary

Problems solved by technology

[0004] But in the partition wall of above-mentioned prior art, the material that mainly adopts is chemical products such as polyurethane, and the mass production of chemical product, use and the process of discarding all form great harm to the environmental protection of mankind.

Moreover, polyurethane materials will decompose in a fire to produce toxic, corrosive and suffocating gases

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