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Straw fiber board manufacturing method and liquid ball mill with plastic lining boards

A technology for straw fibers and a manufacturing method, which is applied in the field of plastic lining liquid ball mills, can solve problems such as difficulties, and achieve the effects of uniform particles, smooth surface and improved strength

Inactive Publication Date: 2012-05-02
张文生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When making straw fiberboard, it is very difficult

Method used

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  • Straw fiber board manufacturing method and liquid ball mill with plastic lining boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of manufacture method of straw fiber board, its steps are as follows:

[0021] (1) Cut the wheat straw into 5-15mm sections, remove broken leaves and sediment impurities, and then remove iron through a magnetic drum;

[0022] (2) Stir and disperse the straw blocks, put them into the plastic liner liquid ball mill, and then inject water. The amount of water added is based on the immersion of the straw, and hydrofluoric acid is added. The concentration of hydrofluoric acid is 47%, and the pH is adjusted to 5-6, washed with water after stirring until the pH is 6-7, and then centrifuged;

[0023] by chemical formula SiO 2 + 4HF = SiF 4 + 2H 2 O, 4 SiF 4 + 3H 2 O+ 2HF = 3H 2 SiF 6 + H 2 SiO 3 , before large-scale production, according to the straw in different regions, add hydrofluoric acid according to different straw amounts, check the pH value after grinding, find out the amount of hydrofluoric acid added per unit weight corresponding to the pH after g...

Embodiment 2

[0030] A kind of manufacture method of straw fiber board, its steps are as follows:

[0031] (1) Cut the wheat straw into 5-15mm sections, remove broken leaves and sediment impurities, and then remove iron through a magnetic drum;

[0032] (2) Stir and disperse the straw blocks, put them into the plastic liner liquid ball mill, and then inject water. The amount of water added is based on the immersion of the straw, and hydrofluoric acid is added. The concentration of hydrofluoric acid is 47%, and the pH is adjusted to 5-6, then add sulfuric acid, the amount of sulfuric acid added is 1 / 10 of the amount of hydrofluoric acid, the purpose is to remove the suberin cells of the straw, wash with water after stirring until the pH is 6-7, and then centrifuge ;

[0033] by chemical formula SiO 2 + 4HF = SiF 4 + 2H 2 O, 4 SiF 4 + 3H 2 O+ 2HF = 3H 2 SiF 6 + H 2 SiO 3 , before large-scale production, according to the straw in different regions, add hydrofluoric acid according...

Embodiment 3

[0040] A method for manufacturing a straw fiberboard, the same as in Embodiment 1, replacing wheat straw with corn stalks.

[0041] In an embodiment, the performance test of the straw fiberboard is as follows:

[0042] sample Density (kg / cm 3 ) Internal bonding strength / MPa Static Bending Strength / MPa Elastic modulus / MPa Board screw holding force / N Example 1 950 0.60 40 3000 1600 Example 2 880 0.58 30 2800 1650 Example 3 920 0.50 25 2500 1500 Example 4 900 0.55 35 2600 1580

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Abstract

The invention discloses a straw fiber board manufacturing method. The straw fiber board manufacturing method includes that 1, straws are cut into sections with lengths ranging from 5mm to 15mm, 2, the straws are inputted into a liquid ball mill with plastic lining boards, water is filled in the liquid ball mill, hydrofluoric acid is added into the liquid ball mill, after grinding, a pH (potential of hydrogen) value ranges from 5 to 6, the pH value is changed to range from 6 to 7 by means of washing, and then centrifugal separation is carried out, 3, straw blocks are subject to defibrator process in a defibrator so that straw fibers are produced, 4, the straw fibers are conveyed to a sizing system to realize sizing and then are dried, and 5, the straw fibers are in hot-pressing, edging and sanding after being laid, so that straw fiber boards are produced. By the aid of acidifying processing of the straws, the hydrofluoric acid is immersed into cells, SiO2 is further dissolved, SiO2 content in the straw fibers is greatly reduced, an adhesion performance of the straw fibers is improved, and the strength of the straw fiber boards is further increased. The straws are ground by the liquid ball mill with the plastic fining boards, particles are uniform after the straws are ground, a lining of a bin of the liquid ball mill with the plastic lining boards is an abrasion-resistant plastic layer, an outer layer of a grinding ball is an abrasion-resistant plastic layer, and the inner wall of the liquid ball mill cannot be corroded.

Description

technical field [0001] The invention relates to a method for manufacturing straw fiber boards and a liquid ball mill for plastic lining boards. Background technique [0002] Straw board has the characteristics of high strength, large product format, fireproof, waterproof, green and environmental protection, and low cost. There are hundreds of kinds of products in various designs and colors. The products can be nailed, sawed, planed, and glued, and have exactly the same application and processing characteristics as wooden boards. Widely used in shopping malls, hotels, restaurants, nightclubs, stations, office buildings, living room walls, doors and windows, dado, ceiling and other interior decoration, also widely used in high-end furniture, doors, compartments. At present, the process of making wood-based panels from straw is generally to crush the straw and submerge it, then mix it with an adhesive, pave it, pre-press and heat-press it, and sand the edges to make a straw fi...

Claims

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Application Information

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IPC IPC(8): B27N1/00B27N3/04B27N3/12B27N1/02B02C17/22B02C17/18
Inventor 邢建华张文生
Owner 张文生
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