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Method for manufacturing non-glued particle board made of agricultural product residua and used as structural material

A technology of residues and agricultural products, which is applied in the field of glue-free particle board manufacturing, can solve the problems of less successful glue-free particle boards and no particle boards, and achieve the effects of simple preparation methods, excellent physical and mechanical properties, and good water resistance

Inactive Publication Date: 2013-07-24
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adhesive-free particleboard (particle board) has less success, and there are no reports of high-strength adhesive-free particleboard for structures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Naturally dry the bagasse to an air-dried moisture content (10-14%)

[0028] (2) Weigh a certain amount of crushed material, lay it into a slab with a single-layer structure of a certain format, and send it to a hot press for hot pressing after pre-pressing, and press it into a glue-free particle board for structure. The hot pressing temperature is 170°C, the pressure is 5MPa, and the time is 8 minutes (the plate thickness is 6mm).

[0029] (3) Turn off the heating power of the hot press. Keep the pressure of the pressing plate, pass cooling water to lower the temperature below 100°C and unload the plate.

Embodiment 2

[0031] (1) Cut the hemp stalks after peeling into pieces, adjust the moisture content to about 60%, process them into pieces with a ring planer, and dry them naturally until the air-dried moisture content (10-12%)

[0032] (2) Weigh a certain amount of crushed hemp stalks, lay them into a slab with a single-layer structure of a certain format, and after pre-pressing, send it to a hot press for hot pressing, and press it into a non-adhesive particle board for structure. The hot pressing temperature is 180°C, the pressure is 6MPa, and the time is 8 minutes (the plate thickness is 8mm).

[0033] (3) Turn off the heating power of the heat press. Keep the pressure on the platen, cool naturally to a temperature of 120°C and unload the plate.

Embodiment 3

[0035] (1) Collect bamboo processing residues from bamboo products processing factories, screen out qualified scraps and oversized scraps, use ring planer to make qualified scraps, and the processed scraps are naturally dried to air Dry moisture content (8-12%)

[0036] (2) Pave the bamboo scraps into a single-layer structure slab of a certain format. After pre-pressing, send it to a hot press for hot pressing, and press it into a non-adhesive particle board for structure. The hot pressing temperature is 190°C, the pressure is 7MPa, and the time is 10 minutes (the plate thickness is 8mm).

[0037] (3) Turn off the heating power of the hot press. Keep the pressure of the platen, and cool it to a temperature of 100°C with cooling water to unload the plate.

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Abstract

The invention discloses a method for manufacturing a non-glued particle board made of agricultural product residua and used as a structural material. The non-glued particle board used as the structural material is made of the agricultural product residua which are machined to be crushed materials and dried to be with certain moisture content, and the crushed materials are mat-formed to be plate blank and pre-compacted and sent into a hot press for hot-press molding. After the hot pressing is finished, the pressure of a pressing plate is kept, and the pressing plate is unloaded after being cooled. The non-glued particle board used as the structural material has the advantages of being high in mechanical strength, good in water tolerance, free of free formaldehyde releasing, capable of being used in a room as a structural sheet material for furniture and interior trim, simple in manufacturing method, and capable of being produced without big change of an ordinary production line of shaving boards.

Description

technical field [0001] The invention relates to a method for manufacturing glue-free particle boards, in particular to a method for preparing glue-free particle boards for high-strength structures using agricultural product residues as raw materials. Background technique [0002] In recent years, my country has become the country with the fastest growing output of the global wood-based panel industry, and its total output ranks among the top in the world. In the production process of wood-based panels, it is generally necessary to add synthetic resin adhesives such as urea-formaldehyde resin and phenolic resin. These synthetic resin adhesives are not only expensive (generally accounting for more than 1 / 3 of the cost of wood-based panel products), but also consume limited petroleum resources. In addition, the wood-based panels produced with urea-formaldehyde resin glue will release free formaldehyde during the use of the product, which will endanger people's health. The Wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/02B27N3/08
Inventor 徐剑莹李铁华钟柱廖锐
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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