Production method of plant straw partical board containing absorption purifying agent

Abstract

The invention relates to a production method of a plant straw partical board containing an absorption purifying agent, comprising the following steps: preparing materials, drying basic materials, selecting glue, applying glue and wax, mixing materials, paving, prepressing, hot-pressing into boards and post-processing. The board comprises the following materials and weight proportion: 6 percent to 12 percent of urea-formaldehyde glue accounting for plant straw partical material by oven dry weight or 3 percent to 6 percent of isocyanate glue, 0 or 0.5 percent to 1.0 percent of paraffin melt, 0.5 percent to 10 percent of carbon and / or soil absorbing agent, and 0 or 0.2 percent to 0.5 percent of board surface of TiO2 purifying agent powder. The board has bonding strength of 0.4 to 0.45MPa, 7.2 percent to 7.8 percent of water-absorbing thickness expansion rate for 2 hours, density of 0.7 to 0.9g / cm, 14.5 to 15.8MPa of static bending strength and 0.50 to 0.68mg / m-h of purifying amount to formaldehyde. The board is used for indoor decoration, furniture backboards, side boards, bottom boards and wall boards of inner walls and the like. The production method has the advantages of wide material source, strong absorption and good effect for purifying air and the like.

Description

technical field [0001] The invention relates to a board made of wood, bamboo, straw and grass stems which is crushed and mixed and then glued and pressed and a production method thereof. Background technique [0002] There are a lot of patent information on the products and related methods of using wood, bamboo, straw, and grass stem glue to press into boards. Most of the poles and grass stems are cut to a certain length and then glued into boards. The boards are made of the mechanical strength of these plant fibers combined with the strength of the glue. However, the leftovers produced in the production process are not fully utilized, especially for wood and bamboo. The problem of low utilization. There are also many patented technologies for making boards using wood and bamboo scraps and branch materials, but most of these boards release free formaldehyde, and the boards themselves do not have the function of adsorption and purification of harmful gases, which is not cond...

AI Technical Summary

Problems solved by technology

There are also many patented technologies for making panels using wood and bamboo scraps and branches, but most of these panels release free formaldehyde, and the panels themselves do not have the function of adsorption and purification of harmful gases, which is not conducive to the purification of indoor air for users

CN100382947 announced Mr. Xu Guoliang's "a kind of manufacturing process of bamboo charcoal board" patented technology, after bamboo powder and the bamboo charcoal powder that particle size is equal to and less than 4mm are mixed and sprayed with glue and pressed into, have certain adsorption purification function, but this board The raw material is too single, and bamboo can only be used as the basic raw material source. my country has a large area without bamboo, which has become a blind spot for the promotion of this technology, and there is only bamboo charcoal for adsorption and purification, and a common bamboo charcoal is used. The diameter is too large, the specific surface area is small, and the adsorption performance is low

The adsorbent lacks the complementary effect of multiple components in the adsorption and purification, and the adsorption and purification effect is restricted