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A kind of high-density board and its production process

A high-density board and coupling agent technology, applied in the field of building boards, can solve the problems of poor uniformity of high-density boards and excessive formaldehyde content, and achieve the effect of reducing the content of formaldehyde, reducing the amount of use, and reducing the amount of use.

Active Publication Date: 2020-11-24
广州市康诺装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Excessive reliance on urea-formaldehyde resin to increase bond strength and density, resulting in excessive formaldehyde content;
[0005] 2) In order to increase the density and strength, it is usually necessary to use long fibers, resulting in poor uniformity of the produced high-density board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of high-density board is made by the following components by weight: 25 parts of coupling agent, 40 parts of wood fiber, 18 parts of urea-formaldehyde resin, 6 parts of melamine, 9 parts of No. 58 paraffin and 0.5 part of ammonium chloride, Wherein, the coupling agent is made of 40wt% nano-SiO2, 45wt% nano-diatom ooze, 10wt% polypropylene and 5wt% catalyst, the catalyst is diethanolamine and propylene glycol in a volume of 3:2 Than composition.

[0038] The production process of the high-density board includes:

[0039] Coupling agent preparation steps: mixing nano-SiO2 and nano-diatom ooze in the formulated amount, adding polypropylene and catalyst in the formulated amount, and stirring evenly to obtain the coupling agent;

[0040] Glue mixing step: put the wood fiber with a water content of less than 1% in a grinder, add a coupling agent, and stir evenly; then add urea-formaldehyde resin, melamine, No. 58 paraffin and ammonium chloride, and stir evenly to obta...

Embodiment 2

[0045] A kind of high-density board, is made of following components by weight: 24.5 parts of coupling agent, 39 parts of wood fiber, 17.5 parts of urea-formaldehyde resin, 6.5 parts of melamine, 9.5 parts of No. 58 paraffin and 0.6 part of ammonium chloride, Wherein, the coupling agent is made of 41wt% nano-SiO2, 44wt% nano-diatom ooze, 10wt% polypropylene and 5wt% catalyst, the catalyst is diethanolamine and propylene glycol in a volume of 3:2 Than composition.

[0046] The production process of the high-density board includes:

[0047] Coupling agent preparation steps: mixing nano-SiO2 and nano-diatom ooze in the formulated amount, adding polypropylene and catalyst in the formulated amount, and stirring evenly to obtain the coupling agent;

[0048] Glue mixing step: put the wood fiber with a water content of less than 1% in a grinder, add a coupling agent, and stir evenly; then add urea-formaldehyde resin, melamine, No. 58 paraffin and ammonium chloride, and stir evenly to...

Embodiment 3

[0053] A kind of high-density board, is made of following components by weight: 25.5 parts of coupling agent, 41 parts of wood fiber, 18.5 parts of urea-formaldehyde resin, 5.5 parts of melamine, 8.5 parts of No. 58 paraffin and 0.5 part of ammonium chloride, Wherein, the coupling agent is made of 39wt% nano-SiO2, 46wt% nano-diatom ooze, 10wt% polypropylene and 5wt% catalyst, and the catalyst is diethanolamine and propylene glycol in a volume ratio of 3:2 composition.

[0054] The production process of the high-density board includes:

[0055] Coupling agent preparation steps: mixing nano-SiO2 and nano-diatom ooze in the formulated amount, adding polypropylene and catalyst in the formulated amount, and stirring evenly to obtain the coupling agent;

[0056] Glue mixing step: put the wood fiber with a water content of less than 1% in a grinder, add a coupling agent, and stir evenly; then add urea-formaldehyde resin, melamine, No. 58 paraffin and ammonium chloride, and stir evenly...

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Abstract

The invention discloses a high density board. The high density board is made of, by weight, 24.5-25.5 parts of coupling agents, 39-41 parts of wood fiber, 17.5-18.5 parts of urea resin, 5.5-6.5 partsof melamine, 8.5-9.5 parts of No.58 paraffin and 0.5-0.6 part of ammonium chloride; the coupling agents are prepared from nano SiO2, nano diatom ooze, polypropylene and catalysts; and the catalysts are composed of diethanol amine and propylene glycol. The high density board is high in internal bonding strength, small in wood fiber usage amount, environment-friendly and low-carbon; and the high density board is high in density and good in water resistance and weather resistance. The invention further provides a production process of the high-density board.

Description

technical field [0001] The invention relates to a building board, in particular to a high-density board and a production process thereof. . Background technique [0002] Density board (English: High Density Board (wood)) is a kind of board. According to raw materials, it can be divided into fiber density board, glued density board, particle density board and so on. Fiber density board is made by soaking wood, branches and other objects in water, crushing and pressing them. It is a man-made board made of wood fiber or other plant fibers and applied with urea-formaldehyde resin or other suitable adhesives. Particle density board is a wood-based panel made of wood or other lignocellulosic materials, which are glued together under heat and pressure after applying adhesives. Also known as particle board. It is mainly used in the furniture and construction industry and in the manufacture of train and car carriages. [0003] However, there are following defects in the existing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/04B27N3/12B27N3/18B27N1/02C08L97/02C08L61/24C08L91/06C08K3/36C08K7/26C08K5/3492C08K13/02
Inventor 阎春来
Owner 广州市康诺装饰材料有限公司