A kind of low-odor wood-based panel and preparation method thereof

A wood-based panel, low-odor technology, used in the manufacture of tools, flat products, other household appliances, etc., can solve the problems of the decline of the mechanical properties of the board, the change of the production process, the decline of the mechanical properties of the wood, etc., to reduce the odor level, improve the quality, The effect of increasing acceptance

Active Publication Date: 2022-07-12
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN 110696140 A discloses a production method of low-odor veneer wood-based panels, specifically reports that adding tea leaves, orange peel powder and slow-release flavor-absorbing capsules to woody materials reduces board odor, but the introduction of non-woody materials will cause The mechanical properties of the board are reduced; CN 106945145 A discloses a production process for low-odor environmentally friendly wood-based panels, which promotes odor discharge by optimizing the shape of shavings, changing the structure of wood-based panels, using high-quality raw materials to reduce odor sources, and effectively reducing the board Odor level, but Changing the shape of the shavings and the structure of the board will lead to a large change in the production process; CN105313202 A discloses a method for removing the odor of mahogany, which uses saturated steam to treat the wood to remove the odor of the wood; CN1364682 A discloses the deodorization treatment of euonymus wood The method comprises the steps of soaking wood with sodium hydroxide solution, ammonia solution and ethanol solution at room temperature for deodorization, so that the lower fatty acids in the wood react with the above-mentioned substances to form tasteless salts or esters with apple flavor; CN 103624852 A discloses a The method of deodorizing Mizuki rosewood wood is to use low-temperature plasma treatment to increase the escape rate of wood odor molecules, and use ozone to oxidize and decompose odor substances. However, the above-mentioned methods will cause wood degradation to varying degrees, resulting in significant mechanical properties of wood. decline

Method used

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  • A kind of low-odor wood-based panel and preparation method thereof
  • A kind of low-odor wood-based panel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Preparation of Sandwich Structure Odor Adsorbent:

[0060] Weigh 100g of γ-cyclodextrin and dissolve it in 500g of water, add 200g of Ti with a particle size of 60 meshes 3 C 2 , using ultrasonic treatment with a frequency of 100KHz for 90min, and then placing the mixture in a freeze dryer and drying at -40°C for 20h to obtain a sandwich-structured odor adsorbent.

[0061] Preparation of formaldehyde-free fiberboard:

[0062] Weigh 1000 g of eucalyptus wood fibers with a moisture content of 10% and 20 g of the sandwich structure odor adsorbent obtained in the previous step into a mechanical mixer to mix uniformly, and then apply 40 g of PMDI by aerosolization while stirring. Weigh 850g of sizing fibers, pave them into slabs in a 30cm*30cm mold, and send them to a hot press after pre-pressing. Fiberboard.

[0063] Sheet mechanical property test and odor grade evaluation, TVOC release test:

[0064] According to "GBT 17657-2013 Test Method for Physical and Chemical P...

Embodiment 2

[0067] The preparation of the sandwich structure odor adsorbent is as in Example 1.

[0068] Preparation of formaldehyde-free particleboard:

[0069] (1) Weigh 1000g of miscellaneous wood surface shavings with a moisture content of 17% and 20g of the sandwich structure odor adsorbent obtained in the previous step and put them into a mechanical mixer to mix uniformly, and then use aerosolization while stirring to apply 35g PMDI.

[0070] (2) Weigh 1000g of miscellaneous wood core layer shavings with a moisture content of 5% and 30g of the sandwich structure odor adsorbent obtained in the previous step and put them into a mechanical mixer to mix uniformly, and then apply 30g PMDI by aerosolization while stirring.

[0071] (3) Weigh 2 parts of surface shavings after sizing prepared in step (1) of 320 g and 1 part of core shavings after sizing of 970 g prepared in step (2), and pave them in a 35cm*35cm mold to have surface shavings-core The slab with layered shavings-surface shav...

Embodiment 3

[0074] Preparation of Sandwich Structure Odor Adsorbent:

[0075] Weigh 55g of γ-cyclodextrin and 5g of β-cyclodextrin and dissolve them in 500g of water, add 200g of Ti with a particle size of 80 mesh 2 N, ultrasonic treatment with a frequency of 28KHz for 30min, and then the mixed solution was placed in a freeze dryer and dried at -35°C for 40h to obtain a sandwich-structured odor adsorbent.

[0076] Preparation of formaldehyde-free fiberboard:

[0077] Weigh 1000g of eucalyptus wood fibers with a moisture content of 10% and 30g of the sandwich structure odor adsorbent obtained in the previous step, put them into a mechanical mixer and mix them evenly, and then apply 40g of PMDI by aerosolization while stirring. Weigh 850g of sizing fibers, pave them into slabs in a 30cm*30cm mold, and send them to a hot press after pre-pressing. Fiberboard.

[0078] The mechanical property test of the board, the evaluation of the odor level, and the TVOC release test are as in Example 1....

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Abstract

The present invention provides a low-odor wood-based panel and a preparation method thereof, including an odor adsorbent, wherein the odor adsorbent includes a layered material and an adsorption material, the layered material is preferably MXene, and the adsorption material is preferably cyclodextrin. The low-odor wood-based panel provided by the invention can reduce the odor grade of the wood-based panel without affecting the mechanical properties of the wood-based panel, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of wood-based panels, in particular to a low-odor wood-based panel and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's awareness of environmental protection, aldehyde-free wood-based panels have developed rapidly, and major custom home furnishing companies have launched aldehyde-free home furnishing products. However, according to feedback from customized home furnishing companies, the complaint rate of odor problems of aldehyde-free wood-based panels is higher than that of aldehyde-containing panels. The main reason is that the wood raw materials used in formaldehyde-free wood-based panels will release some odor substances, especially after being processed into shavings or fibers, which are easier to release. Most consumers do not understand the source of the odor. There is formaldehyde released, thus making a complaint about the product. [0003] At pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/16C08K3/14C08K3/28C08K5/29C08L97/02B27N1/02B27N3/00
CPCC08L5/16C08K3/14C08K3/28C08K5/29C08L97/02B27N1/0209B27N3/002C08L2205/025C08L2205/03
Inventor 孙卫华涂松胡兵波范丽颖张梓军王向硕孙鹏
Owner WANHUA CHEM GRP CO LTD
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