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A kind of formaldehyde-free particle board, production method and application

A production method and particleboard technology, applied in the field of formaldehyde-free particleboard, can solve the problems of excessive formaldehyde release, insufficient static bending strength, excessive water absorption thickness expansion rate, etc., achieve no formaldehyde release, low water absorption thickness expansion rate, and increase income Effect

Active Publication Date: 2019-06-14
四川中科板业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems of excessive formaldehyde release, excessive water absorption thickness expansion rate, insufficient internal bonding strength and static bending strength in the prior art, the present invention provides a formaldehyde-free particleboard, production method and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Process the fresh bamboo into 1-50mm long, 0.1-8mm wide, and 0.1-5mm thick materials with a flaking machine, and then carry out steam explosion. The final moisture content of the material is 7.5%, and the fine material below 500 mesh (inclusive) and the coarse material above 500 mesh are selected by air separation equipment, respectively, and enter the surface layer silo and the core layer silo respectively. Mix the core and surface materials with additives, add wollastonite powder accounting for 15% of the material weight and 1% paraffin emulsion, mix well through a mixer, and then pave into a three-layer structure with a paving machine. The hot pressing conditions are The temperature is 185°C, the pressure is 1.0Mpa, and the time of 320s is hot-pressed for one time. After the board is formed, it can be cooled, edged, sanded, and veneered to obtain the formaldehyde-free bamboo particle board of the present invention.

[0049] The average static bending strength of the ...

Embodiment 2

[0051] Cotton stalks are processed into 1-50mm long, 0.1-8mm wide and 0.1-5mm thick materials with a planer or hammer crusher, and then steam-exploded. Dried under the condition of 3.5 minutes, the final moisture content of the material is 8.2%, and the fine material below 500 mesh (inclusive) and the coarse material above 500 mesh are selected by air separation equipment, respectively, and enter the surface silo and core respectively. Layer silo, respectively mix the core and surface materials with additives, add 5% wollastonite powder and 1.2% paraffin powder by weight of the materials, mix well through the mixer, and pave the upper surface and lower core through the paving machine The double-layer structure, the hot pressing conditions are temperature 195°C and pressure 1.1Mpa, hot pressing for 380s at one time, after the board is formed, the formaldehyde-free straw particleboard of the present invention can be obtained through the steps of cooling, trimming and sanding.

...

Embodiment 3

[0054] Process the bamboo shavings into 1-50mm long, 0.1-8mm wide, and 0.1-5mm thick materials with a planer or hammer crusher, and then carry out steam explosion. Drying is carried out under the condition of 7 minutes, and the final moisture content of the material is 30%. Mix the materials with additives, add slaked lime powder accounting for 1% of the weight of the materials, 10% silicone oil emulsion, and 15% molasses, mix well through a mixer, and pave into a single-layer homogeneous structure through a paving machine, hot pressing The conditions are as follows: temperature 120°C, pressure 2.8Mpa, 380s time for one-time hot pressing molding, and after forming the board, the formaldehyde-free bamboo particle board of the present invention can be obtained through the steps of cooling, trimming, and sanding.

[0055] The average static bending strength of the product is 21.5Mpa, the average internal bonding strength is 1.1Mpa, the average screw holding force on the board sur...

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PUM

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Abstract

The invention relates to an aldehyde-free shaving board and a production method and application thereof. The aldehyde-free shaving board is prepared by conducting steam explosion pretreatment, sorting, additive mixing and hot pressing on a bamboo-based material and / or straw. The aldehyde-free shaving board prepared with the method is free of aldehyde, good in waterproof performance and mechanical property, stable in quality and capable of being applied to base materials, various kinds of furniture, decorations, building templates, kitchen cabinets and packaging boards.

Description

technical field [0001] The invention relates to the technical field of plate production, in particular to a formaldehyde-free particle board, a production method and application. Background technique [0002] At present, my country's forest coverage rate is 16.55%, which is only equivalent to 61.3% of the world's forest coverage rate. The national per capita forest area is only 21.3% of the world's per capita forest area, and the per capita forest stock volume is only 1 / 8 of the world's per capita forest stock volume. Due to unrestricted felling and fires in my country's forest resources, the forest area has decreased sharply, which has seriously damaged the ecological environment of our country. [0003] At the same time, my country has very rich bamboo resources, with more than 500 kinds of bamboo plants, and the bamboo forest area is more than 5 million hectares, accounting for more than 30% of the world's bamboo species. my country's annual output of bamboo is about 1....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/02B27N3/08
CPCB27N3/02B27N3/08
Inventor 任玉枝任建侠王开利孙立李海彦訾英韬陶荔
Owner 四川中科板业有限公司
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