Method for preparing fiber wallboard through wet process

Abstract

The invention discloses a method for preparing a fiber wallboard through a wet process. The method comprises the following steps: 1) pulping: mixing non-wood type natural plant fiber pulp with gramineous plant pulp according to a dry weight ratio of 1:0-1.5 and adding water into the raw materials to dilute the pulp; 2) storing the pulp: placing the obtained mixture pulp into a pulp storage pond and adding water for dilution; 3) carrying out suction filter and formation: inputting the pulp obtained from the previous step into a die cavity for cold-pressing, dehydration and formation so as to obtain a wet blank; and 4) carrying out hot-pressing formation and drying; transferring the wet blank into a hot-pressing mould for hot pressing, removing water generated during the hot pressing, and obtaining the fiber wallboard. The fiber wallboard obtained by using the method has the characteristics of environment-friendliness and high strength.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a method for preparing a fiber wallboard for decoration, in particular to a method for preparing a flame-retardant fiber wallboard for interior decoration by a wet molding process. Background technique [0002] Wall decoration materials are an indispensable and important part of housing construction, and are also an important development field in new building materials. Construction is a pillar industry of the national economy and a basic project of modernization. At present, the residential construction area completed in cities every year in my country is about 335 million square meters 2 , the residential construction area completed in villages and towns is about 500 million m2 every year 2 , about 600 million m2 of public buildings and productive buildings will be built in cities and towns 2 . The wall decoration materials required for these construction projects are calculated on t...

AI Technical Summary

Problems solved by technology

The shortcoming that these steps cause is as follows: 1, can not make the green product of real complete degradation

Most of the products produced by this process on the market add some photolytic materials or a small amount of starch to the non-degradable materials to decompose them into small powders, and there is no real degradation, so its pollution to the environment and hazard still exists

2. Some starch-added products are prone to mildew in a humid environment and are not suitable for long-term storage; 3. The weight is heavy, the transportation cost is high, and it will also increase the weight of waste disposal

Due to the raw materials used and its specific process, the strength of this kind of glue-free fiberboard is not enough when the thickness is low

[0008] The patent document CN1184161C discloses "Flame Retardant Environmentally Friendly Decorative Board and Its Preparation Method", which provides a formaldehyde-free, flame retardant, simple and low-cost environmentally friendly decorative board and its preparation method, but the method It is to add conventional flame retardants in the dry process, and then add glutinous rice paste as an adhesive to pressurize the molding. The process is relatively complicated and has not been applied to the wet process.

[0009] The fiberboard products produced by the existing wet forming process are mainly tableware and other products with a thickness of less than 5mm. The production process basically adopts steam pressure transmission and pressurization, and the pressurization pressure is small, so it is difficult to form products with a certain thickness. And it cannot form products with high precision on the surface, and it does not involve the formation of convexity and concaveness

So far, there have been no products and related reports on the use of pulp molding wet-laid three-dimensional papermaking technology to produce flame-retardant fiber wallboards