Method for manufacturing medium-density fiberboard in inorganic gluing

A manufacturing method and medium-density technology, applied in the field of fiberboard manufacturing, to achieve the effects of overcoming high elastic modulus, shortening production cycle, and improving equipment utilization

Inactive Publication Date: 2013-02-13
HUBEI ZHONGBAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing magnesium cement glued plant fiber-based panels are mainly particle boards, wood particle boards, and wood wool boards. The medium density fiberboards are still under research and development, and the magnesium cement used is limited to magnesium oxychloride cement and magnesium oxysulfide cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The purpose of the present invention is achieved by the following specific technical measures:

[0024] A, fiber treatment: boil the plant fiber (preferably cotton stalk fiber) with water or dilute alkaline aqueous solution for 4-6 hours;

[0025] B. Cement compound preparation: Mix 100 kg of magnesium oxide, 50 kg of magnesium sulfate heptahydrate, 60 kg of pozzolanic mixed material (or volcanic ash), and 2 kg of calcium sulfate (or ferrous sulfate) to make magnesium sulfoaluminate cement compound;

[0026] C. Mixing: Mix the magnesium sulfoaluminate cement rubber and the treated plant fiber evenly to make a semi-dry mixture;

[0027] D. Pressure penetration: Roll the mixture with a pair of rollers with the vertical feeding line as the horizontal direction, so that the magnesium sulfoaluminate cement glue penetrates into the fiber, and the magnesium sulfoaluminate cement glue is infiltrated into the fiber. mixture of materials;

[0028] E. Rolling: Roll the mixture w...

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Abstract

The invention discloses a method for manufacturing a medium-density fiberboard in inorganic gluing. The method comprises the following steps of: A, performing fiber treatment; B, preparing cement size; C, mixing, D, performing pressure penetration; E, laminating; and F, hot-pressing and demolding. The fiberboard has the characteristics of fire resistance, water resistance, ageing resistance, mildew prevention and no formaldehyde and belongs to a green environment-friendly product.

Description

technical field [0001] The invention relates to the field of methods for the manufacture of fibreboards. technical background [0002] At present, the existing medium density fiberboard is produced by using urea-formaldehyde resin and phenolic resin as adhesives. Since urea-formaldehyde resin and phenolic resin contain formaldehyde and pollute the environment, since 2008 in California, the medium density fiberboard glued with urea-formaldehyde resin and phenolic resin has been gradually banned. MDF glued with formaldehyde-free isocyanate resin (MDI) is expensive and has poor fire performance. [0003] The existing inorganic glued plant fiber-based panels utilize the strong composite ability of magnesium cement and plant fibers. In 1908, the Austrian inventor S.Robert proposed "Process to manufacture a firepoof, light, porous material" (fireproof lightweight porous material) Production process)" patent application, obtained the Austrian patent (NO.37223) in 1909, and began...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N3/08C04B28/30C04B16/02
Inventor 陈学鲜谌萌席凯原
Owner HUBEI ZHONGBAI TECH
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