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Shaving board with low formaldehyde emission volume and preparation method of shaving board

A low formaldehyde release, particle board technology, applied in the field of particle board, can solve problems such as the difficulty of urea-formaldehyde resin, and achieve the effect of reducing the amount of formaldehyde and slowing the release rate

Inactive Publication Date: 2017-12-15
ANHUI ZHIBO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the color of urea-formaldehyde resin is very light, which is very suitable for decoration adhesives. Uncured urea-formaldehyde resin can be mixed with water better, the curing speed is fast, and it has good bonding strength. Therefore, in the short term, I want to start from It is very difficult to fundamentally shake the position of urea-formaldehyde resin in adhesives

Method used

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  • Shaving board with low formaldehyde emission volume and preparation method of shaving board
  • Shaving board with low formaldehyde emission volume and preparation method of shaving board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation method of the particle board of low formaldehyde emission:

[0031] (1) Carbonize the wood particle board raw material for 60 minutes under the condition of vacuum degree of 0.01Mpa and temperature of 250°C,

[0032] (2) Weigh the pretreated wood shavings in the step (1) of the formula amount, spray 4g coupling agent, 5g paraffin emulsion and 1g polyvinyl alcohol on the wood shavings, stir evenly, and then mix with 15g glue agent to obtain a premix;

[0033] (3) Lay the premix in step (2) into the mold. The thickness of the premix laying is 35.8cm, apply a pressure of 300Pa to pre-press for 9min, then raise the temperature to 250°C, and press it under a pressure of 1000Pa 50min, get 17.9mm thick core board;

[0034] (4) Leave the core board of step (3) for 5 hours, then use a punching machine to punch out air holes on the core board, the aperture of the air holes is 2mm, and the distance between adjacent air holes is 8mm, and then Stack the core...

Embodiment 2

[0037] A kind of preparation method of the particle board of low formaldehyde emission:

[0038] (1) Carbonize the wood particle board raw material for 50 minutes under the condition of vacuum degree of 0.015Mpa and temperature of 240°C,

[0039](2) Take the pretreated wood shavings in the step (1) of the formula amount, spray 2g coupling agent, 4g paraffin wax emulsion and 0.5g polyvinyl alcohol on the wood shavings, stir evenly, and then mix with 8g glue Sticky agent, obtain premix;

[0040] (3) Lay the premix in step (2) into the mold. The thickness of the premix laying is 45.4cm, apply a pressure of 150Pa to pre-press for 8min, then raise the temperature to 240°C, and press it under a pressure of 1000Pa 40min, obtain the core layer plate that thickness is 22.7mm;

[0041] (4) Leave the core board of step (3) for 1 hour, then use a punching machine to punch out vent holes on the core board, the diameter of the vent hole is 1mm, and the distance between adjacent vent holes...

Embodiment 3

[0044] A kind of preparation method of the particle board of low formaldehyde emission:

[0045] (1) Carbonize the wood particle board raw material for 60 minutes under the condition of vacuum degree of 0.28Mpa and temperature of 270°C,

[0046] (2) Take the pretreated wood shavings in the step (1) of the formula amount, spray 5g coupling agent, 6g paraffin wax emulsion and 1.2g polyvinyl alcohol on the wood shavings, stir evenly, and then mix with 16g glue Sticky agent, obtain premix;

[0047] (3) Lay the premix in step (2) into the mold. The thickness of the premix laying is 73.4cm, apply a pressure of 500Pa to pre-press for 9min, then raise the temperature to 270°C, and press it under a pressure of 1300Pa 50min to obtain a core plate with a thickness of 36.7mm;

[0048] (4) Leave the core board of step (3) for 2 hours, then use a punching machine to punch out air holes on the core board, the aperture of the air holes is 2mm, and the distance between adjacent air holes is ...

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Abstract

The invention relates to the technical field of shaving boards, in particular to a shaving board with the low formaldehyde emission volume and a preparation method of the shaving board. The shaving board comprises a core layer and surface layer solid wood plates, wherein the core layer is formed by suppressing a wooden shaving plate body and an adhesive, and the surface layer solid wood plates are arranged on the two sides of the core layer; the thickness ratio of the core layer to the surface layers is 1 : (0.06-0.125), and ventilating holes penetrating through the core layer are punched in the core layer at intervals; the core layer comprises the following substances of, by weight, 300-700 parts of wooden shavings, 1.5-6 parts of a coupling agent, 5-18 parts of the adhesive, 3-8 parts of wax emulsion and 0.1-1.5 parts of polyvinyl alcohol. The wooden shavings are subjected to vacuum carbonization treatment in advance, and the ventilating holes facilitate rapid emission of a large amount of formaldehyde after a core layer plate of the shaving plate is formed, so that the formaldehyde emission volume in the later using process of the shaving plate is reduced; and the wooden shavings constituting the core layer plate are subjected to vacuum carbonization treatment, a carbonized layer formed on the surface of the core layer plate can adsorb formaldehyde in the adhesive, and the emission speed of the formaldehyde in the later period is reduced.

Description

technical field [0001] The invention relates to the technical field of particle boards, in particular to a particle board with low formaldehyde emission and a preparation method thereof. Background technique [0002] The wood-based panels currently used in the market need to use a large amount of adhesives for product processing. In the production process, formaldehyde-containing urea-formaldehyde glue (UF), melamine-formaldehyde glue (MF), modified urea-formaldehyde glue and phenolic formaldehyde are added. Glue (PF), etc., because these glues use aldehyde compounds, the finished products made of them will produce volatile formaldehyde, which will cause great harm to the human body and pollute the environment. The World Health Organization (WHO) confirms that formaldehyde has harmful effects on humans. Toxic, carcinogenic, teratogenic and other hazards, and these glues, especially the furniture and floors produced by urea-formaldehyde glue, can continuously release formalde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/02B27N1/00B27M1/06B27N3/08B27N3/18B27D1/04B27D1/08B32B21/02B32B21/13B32B21/14B32B3/24B32B37/02B32B37/24
CPCB27D1/04B27D1/08B27M1/06B27N1/00B27N3/02B27N3/08B27N3/18B32B3/266B32B21/02B32B21/13B32B21/14B32B37/02B32B37/24B32B2037/243B32B2250/03B32B2250/40B32B2255/08B32B2255/20B32B2260/021B32B2260/026B32B2307/758B32B2607/00
Inventor 汪六一宋从发
Owner ANHUI ZHIBO NEW MATERIAL TECH CO LTD
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