CN101633191A

CN101633191A - Synthesized kenaf fiber board and product thereof

Info

Publication number: CN101633191A
Application number: CN200810117064A
Authority: CN
Inventors: 李朝旺; 郝光; 岳学坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-23
Filing date: 2008-07-23
Publication date: 2010-01-27

Abstract

The invention relates to a synthesized kenaf fiber board and a product thereof, which are pioneering inventions in the field of building materials. The synthesized kenaf fiber board and the product thereof have the following technical characteristics: decomposing genetically modified kenaf into fine fiber bundles by a defibering machine; conveying the fine fiber bundles into a container provided with a stirrer; adding sodium silicate, hydrogen peroxide and potassium permanganate in proportion; keeping the temperature between 85 and 95 DEG C for 90 to 120 minutes, and then curing and decomposing the mixture to prepare a kenaf fiber stuff; crushing diatomite and lime hydrate into 180 to 200 meshes, and processing the powder at a high temperature and a high pressure to form a crystal slurry which is stirred evenly with the kenaf; adding 180-200 meshes of magnesium oxide or coal gangue, and simultaneously adding a polycomponent hot melt adhesive; and stirring the mixture evenly, and using a multilayer hot press of which the width is 1.3 meters and the length is 3.2 meters to synthesize the mixture into various boards by heating and pressurizing according to different proportions and thicknesses.

Description

Synthetic kenaf sheet material and goods thereof

Technical field

The present invention is the pioneering invention of building materials field.

Background technology

Existing China building materials market is fiery unusually; various fitting-ups consume a large amount of wood fibre sheet materials; the real free of contamination sheet material proportion of environment-protecting asepsis is few; a lot of manufacturers, dealer adulterate; mix the spurious with the genuine; annual because of new decorated house or live new house and cause a lot of people to suffer from various various disease because of IAQ exceeds standard, much other buys new house and dare not move at once, need open the door and window virulent gas of eliminating that ventilates for a long time.

Be contaminated solution environmental problem fundamentally, utilize hydroxyl radical free radical and active oxygen radical to abolish the lignin chromogen improvement of genes mestha, the clean pulping method that changes the lignin molecular structure is made fiber pulp, add material powder synthetic plates such as calcium silicates, magnesia, gangue again, be used for making the series of products of inside and outside body of wall, consolidated floor, high-grade door, all kinds of plate fitments etc., have intensity height, density greatly, characteristics such as nonhazardous gas.It is comparatively desirable new decorative material for building.

Summary of the invention

Technical characterictic of the present invention is to adopt the improvement of genes mestha as main fibrous raw material, abolishes the lignin chromogen with hydroxyl radical free radical and active oxygen radical, and the nonpolluting method producer gene improvement kenaf slurry that changes the lignin molecular structure is made hard board.Through test of many times demonstration proof, the medium-density plate that utilizes kenaf to make, higher more than 30% than the medium-density plate MOR of producing with other string, add the calcium silicates, magnesia, gangue of proper proportion again after, its hardness reaches the standard of 3H, and fire resistance is good especially.The PUR of selecting for use rare fat of poly-acetate second that Japanese Ai Ke company produces and the many components of resin system example to reach the EO environmental protection standard, density is big, the adhesion strength height; The wide especially model of raw materials such as the calcium silicates that adds, magnesia, gangue, the saltern in Bohai Sea Gulf particularly, the needed raw material that contains significant proportion in a large amount of residues after evaporating brine, and price is low, and through grinder these interpolation materials being ground into the 180-200 order is exactly best synthetic material.The pressboard of this no any poisonous and harmful substance can be made various buildings, decoration, Furniture panel.

The specific embodiment

1, dried mestha bar is pulverized the strip and block of long 35-45mm, resolve into thin shape fibre bundle through the abrading type defibrator, be delivered to and add sodium metasilicate 30%, hydrogen peroxide 40%, potassium permanganate 0.1% in the container that band stirs in proportion and be warmed to the 85-95 degree, the slaking, the decomposition that keep 90-120 minute, make the kenaf bundle generate kenaf through decomposing, its every index is: tensile index (Nm/g ISO2757)---21/2; Tear index (mNm2/g ISO 294) 106; Burst index (kPam2/g ISO1974) 84.0; Bulk (g/cm3 ISO 534) 1.35; Whiteness 60%-80%ISO.

2, extrude moisture content through screw press again and promptly finish the fibre stuff of moisture content more than 25%.When making all kinds of sheet material, make main raw material with this kneaf pulp, this production process is pollution-free, and waste water recycles after treatment;

3,20% diatomite, 20% slaked lime powder being crushed to the 180-200 order adds reactor and produces " holder shellfish mullite " crystal slurry liquid state as adding raw material through HTHP.

4, again 10-30% is shone the residue magnesia of saltworks or the gangue behind the producing coal of mine and be ground to the 180-200 order, add these several powder of different proportion according to different purposes;

5, add many components PUR again and stir, through the multi-daylight press of the long 3.2m of wide 1.3m, by different proportion, the different-thickness synthesizing new building board of heating, pressurize; Its every index all is better than every index of high-density plate.

Utilize series of products such as this sheet material processing quick-mounting wallboard, floor, door, this series products is the Green Product of unharmful substance and harmful gas.

Claims

1. synthetic kenaf sheet material and goods thereof, it is the pioneering invention in building materials field, its major technique feature is with improvement of genes kenaf slurry, and interpolation calcium silicates, magnesia, gangue powder are added the nontoxic thermosol adhesive of component and made multipurpose sheet materials such as wallboard, floor, door and window, decorations.