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Preparation technology of formaldehyde-free waterproof composite board

A preparation process and composite board technology, which is applied in the field of board processing, can solve problems such as damage to human health, low compressive strength, and weak water resistance, and achieve the effect of improving compressive strength, high compressive strength, and light weight of the board

Active Publication Date: 2017-04-05
益阳万维竹业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing bamboo-wood composite boards have low compressive strength, and the processed bamboo-wood composite boards will continue to release formaldehyde for a long period of time, seriously damaging human health, and the existing artificial bamboo-wood composite boards are heavy , but the water resistance is weak, it is easy to decompose and foam after soaking in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation process for a formaldehyde-free waterproof composite board, which comprises the following processing steps:

[0030] (1) Raw material processing: crushing bamboo into a particle size of 0.4mm bamboo powder, after drying to obtain bamboo shavings; pulverizing wood into a particle size of wood powder less than 0.3mm, after drying, to obtain wood shavings;

[0031] (2) Core material preparation:

[0032] Core material modification: according to the proportion by weight, add 100 parts of bamboo shavings and 90 parts of wood shavings to the mixer, after mixing evenly, 1 part of rosin, 15 parts of silicon acrylic emulsion, and continue stirring for 20 minutes to form a modified core material ;

[0033] Core material mixing: Add 30 parts of adhesive to the above mixer, increase the temperature inside the mixer to 40°C, and continue stirring for 20 minutes to form a mixed core material;

[0034] Core board forming: the mixed core material is paved and hot-presse...

Embodiment 2

[0048] A preparation process for a formaldehyde-free waterproof composite board, which comprises the following processing steps:

[0049] (1) Raw material processing: crushing bamboo into a particle size of 0.5mm bamboo powder, drying to obtain bamboo shavings; pulverizing wood into a particle size of less than 0.3mm wood powder, after drying, to obtain wood shavings;

[0050] (2) Core material preparation:

[0051] Core modification: according to the proportion by weight, add 100 parts of bamboo shavings and 110 parts of wood shavings to the mixer, mix well, add 3 parts of rosin, 20 parts of silicon acrylic emulsion, and continue stirring for 30 minutes to form a modified core material;

[0052] Core material mixing: Add 45 parts of adhesive to the above mixer, increase the temperature inside the mixer to 60°C, and continue stirring for 30 minutes to form a mixed core material;

[0053] Core board forming: the mixed core material is paved and hot-pressed to form a core materi...

Embodiment 3

[0067] A preparation process for a formaldehyde-free waterproof composite board, which comprises the following processing steps:

[0068] (1) Raw material processing: crushing bamboo into a particle size of 0.45mm bamboo powder, after drying to obtain bamboo shavings; pulverizing wood into a particle size of less than 0.3mm wood powder, after drying, to obtain wood shavings;

[0069] (2) Core material preparation:

[0070] Core modification: according to the proportion by weight, add 100 parts of bamboo shavings and 100 parts of wood shavings to the mixer, mix well, add 2 parts of rosin, 17 parts of silicon acrylic emulsion, and continue stirring for 25 minutes to form a modified core material;

[0071] Core material mixing: add 40 parts of adhesive to the above mixer, increase the temperature inside the mixer to 50°C, and continue stirring for 25 minutes to form a mixed core material;

[0072] Core board forming: the mixed core material is paved and hot-pressed to form a co...

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Abstract

The invention discloses a preparation technology of a formaldehyde-free waterproof composite board. The technology comprises processing steps as follows: bamboo and wood materials are crushed and then dried, and bamboo shavings and wood shavings are formed; the bamboo shavings, the wood shavings, sodium carboxymethylcellulose, rosin, a silicone acrylic emulsion and an adhesive are mixed in different proportions, and a mixed core material and a mixed surface material are formed; the mixed core material and the mixed surface material are laid and hot-pressed respectively, and a core material blank board and surface material blank boards are formed; and the core material blank board is arranged between the two surface material blank boards, and a finished product is formed after hot-pressing, airing, sanding and edge cutting. The composite board processed with the technology can have the advantages of being completely free of formaldehyde emission, high in waterproofness, high in strength and light in mass.

Description

technical field [0001] The invention belongs to the technical field of plate processing, in particular to a preparation process of a formaldehyde-free waterproof composite plate. Background technique [0002] The timber industry is the pillar industry of my country's forestry economy. The development of the timber industry with wood-based panels as the main body is of great significance for building a modern and developed forestry industry system, a complete ecological system, and promoting the construction of four modernizations and two types of society in Hunan Province. . With the development of economy and society, the consumption of wood-based panels in furniture, flooring, building decoration, etc. is increasing at an alarming rate. The existing bamboo-wood composite boards have low compressive strength, and the processed bamboo-wood composite boards will continue to release formaldehyde for a long period of time, seriously damaging human health, and the existing artif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/00B27N1/02B27N3/02B27N3/08B27D1/08B27D5/00
CPCB27D1/08B27D5/00B27K2200/15B27K2240/20B27K2240/70B27N1/003B27N1/0209B27N3/02B27N3/08
Inventor 胡立明吴金保
Owner 益阳万维竹业有限公司
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