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Rice-shell board mixture

A technology of rice husks and fillers, applied in the pretreatment of molding materials, flat products, household components, etc., can solve the problems of low strength and water resistance

Inactive Publication Date: 2006-11-01
INSTITUT KHIMII TVERDOGO TELA I MEKHANOKHIMII SIBIRSKOGO OTDELENIJA ROSSIJSKOJ AKADI NAUK IKHTTM SO RAN +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The disadvantage of this technical solution is the low strength and water resistance of the wood chipboards made of these mixtures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Rice husk board samples were made according to the following procedure:

[0019] Start preparing the adhesive. The modulus is 2.4-3.6, the density is 1.4-1.6g / cm 3 The sodium liquid water glass (25-50 weight ratio) is mixed with silicon dioxide or silica powder (10-70 weight ratio) and then stirred. Put the rice husk or the mixture of rice husk and sawdust into the obtained bonding species and stir again, and add a small amount (100 weight ratio) as appropriate.

[0020] Spread the stirred ingredients evenly into the mold, carry out cold pressing under the pressure of 1.0-4.0Mpa and adjust the furnace temperature to 150-200°C, and then slowly cool until the water evaporates completely. The density of the finished board is 850-1400kg / cm 3 .

[0021] Cut the prepared slabs according to the specifications and test them according to the national standard 10632-89 of "wood particle board".

[0022] The plate ingredients and samples of this application are shown in Table...

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PUM

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Abstract

The invention belongs to the formula of synthetic filler for making wooden boards. The ingredients of its rice hull board include wood filler, sodium liquid glass, silicon dioxide and sodium hexafluoroethane silicate. The mixture of rice husk or rice husk and wood chips in any ratio is used as wood filler, and the silica contains artificial silica or various metallurgical production wastes with a SiO2 content of not less than 80% silica powder, and the ingredients are in the following proportions (weight ratio): rice husk: 100, sodium liquid glass added according to dry matter: 25-50, silicon dioxide: 10-70. The wood chipboard has water resistance and high strength (static bending strength = 8-15.0Mpa), and this method can also fully digest and utilize agriculture (rice husk), wood processing (sawdust) and industry (silica powder) production waste.

Description

technical field [0001] The invention belongs to the synthetic filler for making wood boards, in particular the rice hull board ingredients synthesized by using agricultural waste (rice husk), wood processing waste (sawdust) and industrial production waste (silica powder). Background technique [0002] There are many kinds of ingredients for making boards with inorganic, environmentally friendly adhesives. In these formulations wood chips, shavings, dust are used as wood filler and liquid sodium silicate as binder. [0003] Existing wood shaving board ingredients include (weight ratio): wood shavings 100; sodium liquid glass 80-20, dry matter 40-60; water content 80-20; Fluoroethane sodium silicate as modifier (denaturant) 1.2-4.2; (Russian Federation Patent No. 2057773, C08L97 / 02, 10.04.1996). The disadvantage of this technical solution is the low strength and water resistance of the wood chipboards made of these mixtures. [0004] Wood chipboard batching comprises in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/02B27N3/02
Inventor 巴鲁巴亚拉夫·弗拉基米尔·阿列克桑德罗维奇卡拉塔耶娃·卓娅·阿列克谢夫娜拉亚霍夫·尼卡拉伊·扎哈拉维奇高宏李千育姜华
Owner INSTITUT KHIMII TVERDOGO TELA I MEKHANOKHIMII SIBIRSKOGO OTDELENIJA ROSSIJSKOJ AKADI NAUK IKHTTM SO RAN
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