Cement particle board, and preparation process and application thereof

A preparation process and particleboard technology, applied to cement particleboard and its preparation process and application fields, can solve the problems of hindering the penetration and flow rate of adhesive liquid, limited application range of cement particleboard, poor direct veneer ability, etc., and achieve excellent Direct finishing ability, ensuring the overall physical and chemical properties, and enhancing the effect of finishing ability

Inactive Publication Date: 2019-08-30
TREEZO NEW MATERIAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Yet the weak point of above-mentioned cement particle board is: (1) needs to add a large amount of cements in the component and just can guarantee the physical and chemical properties of cement particle board, and the density of cement particle board is bigger than common urea-formaldehyde particle board, and maintenance time is long, and maintenance cost is high; (2) The surface of the cement particle board is mainly a mixture of wood particles and cement hardening body. The cement hardening body not only hinders the penetration and flow rate of the adhesive liquid, but also the higher the content of the cement hardening body, the worse the direct facing ability, making the cement Particleboard has a limited range of applications

Method used

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  • Cement particle board, and preparation process and application thereof
  • Cement particle board, and preparation process and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 prepares cement particleboard

[0034] A kind of preparation technology of the present embodiment cement particleboard, comprises the following steps:

[0035] Air-dry the wood processing residues to a moisture content of 14-25%; then pass through a shredder and a planer (30-120mm in length, 5-20mm in width, and 0.20-0.80mm in thickness), and then pass through mechanical screening Rough wood shavings (length greater than 60mm) are used as core material, while 80% fine wood shavings (length less than 60mm) and 20% sawdust are used as surface material for subsequent use.

[0036] (1) Wood shavings are pretreated for subsequent use;

[0037] Specifically include: (a) immerse the corresponding wood shavings (i.e. coarse wood shavings / fine wood shavings+sawdust) in 1% sodium hydroxide solution for degradation treatment, take them out after 40-60 minutes, and wash until the rinse solution pH at 7-9, drain;

[0038] (b) Put the drained wood shavings into an ove...

Embodiment 2

[0043] Embodiment 2 prepares facing particle board (cement particle board+tech wood+melamine paper)

[0044] A kind of preparation method of facing particle board of the present embodiment comprises the following steps:

[0045] (1) The cement particle board double-sided glue (melamine glue, 270g-300g / m2) prepared by embodiment 1 2 );

[0046] (2) Paste a piece of 50 silk technical wood on the upper and lower surfaces of the glued cement particle board, first cold press (the cold pressing pressure is 0.8MPa, and the cold pressing time is 4min) and then hot pressing (hot pressing temperature is 110°C) , the hot pressing time is 4.5min, and the hot pressing pressure is 1.0MPa);

[0047] (3) Lay melamine paper on the surface of high-tech wood, heat-press and solidify (hot-press temperature is 120°C, heat-press time is 7min, and heat-press pressure is 1.0MPa), and then unload it after mechanically cooling to 80°C to obtain The facing particleboard of this example.

Embodiment 3

[0048] Embodiment 3 prepares facing particle board (cement particle board+Okoume)

[0049] A kind of preparation method of facing particle board of the present embodiment comprises the following steps:

[0050] (1) The cement particle board double-sided glue (melamine glue, 270g-300g / m2) prepared by embodiment 1 2 );

[0051] (2) Paste a piece of 40 wire okoume on the upper and lower surfaces of the glued cement particle board, first cold press (the cold pressing pressure is 0.6MPa, the cold pressing time is 4min) and then hot pressing (hot pressing temperature is 110 -120°C, hot-pressing time 3.5min, hot-pressing pressure 0.8MPa), with mechanical cooling to 80°C and then unloading, the decorative particleboard of this embodiment is obtained.

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Abstract

The invention discloses a cement particle board, and a preparation process and application thereof. The cement particle board comprises a core layer and surface layers on two sides of the core layer;and wood particles in the surface layers and the core layer are added after being first pretreated by (a) separately immersing the corresponding wood particles in alkali liquor to be degraded, takingout the degraded wood particles and thoroughly draining the wood particles; and (b) drying the drained wood particles until the water content is close to the fiber saturation point and then taking outthe wood particles, spraying water on the surfaces of the wood particles, performing high-temperature pretreatment, cooling to 103 DEG C, and drying until the water content is 4%-12%. The wood particles used in the cement particle board disclosed by the application need to be preheated at first, the alkali treatment can reduce the moisture absorption performance of the cement particle board, andthe size stability is improved; and the high-temperature thermal treatment can enable the density of the wood particles and the cement particle board to be reduced, the mechanical strength is improved, the permeability of the cement particle board is improved, the penetration and flow expansion of an adhesive are facilitated, and the direct facing ability, the peel strength and the surface adhesion strength of the cement particle board are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of artificial boards, and in particular relates to a cement particle board and its preparation process and application. Background technique [0002] With the rapid development of society, people have higher and higher requirements for environmental protection awareness and physical and mental health, and the voice for green and environmentally friendly wood-based panels is getting stronger and stronger. Traditional particleboard is made of wood, with urea-formaldehyde resin or phenolic resin as adhesive, and is prepared by sizing, stirring, paving, and hot pressing. The amount of glue used is large, and the product is accompanied by excessive formaldehyde content, unstable physical and chemical properties, and waterproof. Problems such as poor moisture resistance. [0003] At present, formaldehyde-free adhesives have been developed on the market to replace urea-formaldehyde resins or phenolic resins and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/00B27N3/02B27N3/10B27K3/20B27K5/00B27K5/04
CPCB27K3/20B27K5/009B27K5/04B27N1/00B27N3/02B27N3/10
Inventor 王诚徐俊沈亚伦毕海明刘昊
Owner TREEZO NEW MATERIAL TECH GRP CO LTD
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