Geopolymer-based rice straw fiber board and preparation method thereof

Abstract

The invention provides a geopolymer-based rice straw fiber board, which is prepared from the following raw materials in parts by weight 57 to 60 parts of liquid sodium water glass, 30 to 35 parts of metakaolin and 8 to 12 parts of rice straw fiber. Meanwhile, the invention provides a preparation method of the geopolymer-based rice straw fiber board. The method comprises the following steps of mixing the liquid sodium water glass and the metakaolin to obtain slurry; adding the rice straw fiber into the slurry; performing further mixing to obtain slurry; transferring the slurry into a mold for extrusion forming; after the demolding, putting the materials under the natural conditions for curing curing, for 7 to 10 days. The fiber board prepared by the method has the advantages that the intensity is high; the hardening is fast; the anti-corrosion performance is realized; the water-resistant performance is good; the water absorption expansion rate is very low; the curing condition is simpleand convenient; the abrasion of the straw fiber raw material crushing process on the equipment is small; the problems that the cement-based plant fiber board production process is complicated, only the pulping fiber can be used, the production cost is high, and the like are solved; by the method, the utilization rate of agricultural and forest waste can be improved; economic and environment-friendly effects are achieved.

Description

technical field [0001] The invention relates to a geopolymer-based rice straw fiberboard, in particular to a geopolymer-based plant fiberboard using metakaolin and rice straw fibers as raw materials, and belongs to the technical field of building materials. Background technique [0002] Cement fiberboard has been widely used because of its characteristics of waterproof and moisture-proof, fire insulation, sound insulation and heat insulation, light weight and high strength, simple construction, safety and harmlessness, etc., but most of the fibers used are wood pulp fibers after beating. Complicated, thereby improving the production energy consumption and production cost of cement fiberboard. Moreover, the production of cement will emit a large amount of carbon dioxide, and the production process will also cause serious pollution to the environment. In addition, the strength and toughness of non-wood pulp fiber-reinforced cement boards decrease significantly with time durin...

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Problems solved by technology

[0006] A geopolymer-based fiberboard is disclosed in the prior art, CN201310742307.4, which uses slag-based geopolymer as a matrix, uses wood fibers separated and dried by refining as fiber materials, and uses polypropylene fibers, glass fibers One or a mixture of the two is used as a reinforcing fiber, so its raw materials and processes are more complicated

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