Method for manufacturing reed straw fiberboard

Abstract

The invention discloses a reed straw fiberboard and a preparation method thereof. The method comprises the steps that reed, maize straw and rice straw are mixed according to the mass ratio of 5:3:2 and are subjected to filament drawing and smashing in a filament combing mode along filaments through a smashing machine; the smashed mixture is conveyed to a drum dryer to be dried; a fiber recombination promoter prepared from isocyanate, magnesium chloride, magnesium oxide, metakaolin, talcum powder and trisodium phosphate is adopted to conduct glue applying, ring type high-speed stirring and atomized glue applying is adopted after completion of mixing, and the glue applying amount is 7.5-8.5% of the total weight of the single board; pavement is carried out according to the pavement sequence of fine materials, medium materials, large materials, medium materials and fine materials, and a board blank is formed through a high-pressure heat sealing method; and finally the board blank is cut and polished to obtain the finished board. The board obtained through the method is firm, durable, free of deformation, anti-ageing, flame-retardant, dampproof, and capable of absorbing sound and insulating heat, has the characteristics of environmental friendliness, non-toxicity, tastelessness and non-formaldehyde, is high in internal bonding strength and good in static bending intensity, achieves zero emission of formaldehyde and has broad market prospects.

Description

technical field [0001] The invention relates to the technical field of man-made boards, in particular to a method for making reed straw fiber boards. Background technique [0002] Science is progressing and society is developing. Many years ago, solid wood panels were mostly used in furniture production and home decoration projects. In order to save forest resources and wood, people used wood chips and wood chips as raw materials in the 1970s. Particleboard was manufactured; due to the woody directional structure of particleboard, the English translation is OSB, referred to as OSB; Referred to as OSSB; the raw material used by OSB is wood waste, which is inseparable from the category of wood. The raw material used by OSSB is wheat straw discarded after harvesting wheat. OSB uses urea-formaldehyde resin glue in the board making process, and its board contains formaldehyde. ; OSSB uses the newly developed super environmentally friendly MDI isocyanate glue in the world, which ...

AI Technical Summary

Problems solved by technology

[0003] At present, the production of wheat straw board in my country is limited to several large state-owned enterprises in the south. Due to the high price of the production equipment imported from Germany purchased by these large state-owned enterprises, the price of a piece of equipment with an annual output of 100,000 cubic meters is 80 million yuan. In actual production, Restricted by the season and wheat field area, it is difficult to collect raw materials, and the transportation cost is high. Sometimes the production is intermittent or even stopped due to lack of raw materials. Therefore, the output of wheat straw boards is small, the cost is high, and the price remains high. It has not been widely used in the market quickly. In order to make OSSB wheat straw board, a formaldehyde-free green building material that replaces wood with grass, mass-produced and realize large-scale popularization and application, it is necessary to further improve the use of raw materials and production technology