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Environment-friendly glue free particle board and preparation method thereof

An environment-friendly particle board technology, which is applied to flat products, manufacturing tools, and other household appliances, can solve the problems of endangering human health, consuming petroleum resources, and high prices, and achieves improved strength and water resistance, and a wide range of applications. The effect of the simple preparation method

Inactive Publication Date: 2013-09-25
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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.

Method used

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  • Environment-friendly glue free particle board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Sucrose, citric acid, acetic acid and water are formulated into a composite additive solution in a weight ratio of 30:10:10:50.

[0028] (2) Chip the wood, spray water to adjust the moisture content to about 60%, process it into pieces with a ring planer, and dry it naturally to reach the air-dried moisture content (10-12%)

[0029] (3) A certain amount of crushed material is weighed, and then the composite additive solution is evenly sprayed on the surface of the crushed material, and the solid application amount of the composite additive accounts for 15% of the weight of the dry crushed material.

[0030] (4) Lay the additive-added scrap material into a single-layer slab of a certain width, and after pre-pressing, send it to a hot press for hot pressing, and press it into a glue-free particle board. The hot pressing temperature is 180°C, the pressure is 3-5MPa, and the time is 10 minutes (the plate thickness is 12mm).

Embodiment 2

[0032] (1) Sucrose, citric acid, acetic acid and water are formulated into a composite additive solution in a weight ratio of 20:20:10:50.

[0033] (2) Naturally dry the bagasse to the air-dried moisture content (10-14%)

[0034] (3) Weigh a certain amount of bagasse scraps, and then evenly spray the composite additive solution on the surface of the scraps, and the solid application amount of the composite additives accounts for 10% of the weight of the dry scraps.

[0035] (4) Lay the additive-applied crushed material into a single-layer slab of a certain format, and after pre-pressing, send it to a hot press for hot pressing, and press it into a glue-free particle board. The hot pressing temperature is 180°C, the pressure is 3-5MPa, and the time is 7 minutes (the plate thickness is 7mm).

Embodiment 3

[0037] (1) Sucrose, citric acid, acetic acid and water are formulated into a composite additive solution in a weight ratio of 25:15:10:50.

[0038] (2) Cut the hemp stalks into pieces, use a planer to make scraps, and dry naturally until the air-dried moisture content (10-13%)

[0039] (3) Weigh a certain amount of crushed hemp stalks, and then evenly spray the composite additive solution on the surface of the crushed materials. The solid application amount of the composite additive accounts for 16% of the weight of the dry crushed materials.

[0040] (4) Lay the additive-applied scrap material into a single-layer slab of a certain format, and after pre-pressing, send it to a hot press for hot pressing, and press it into a glue-free particle board. The hot pressing temperature is 190°C, the pressure is 3-5MPa, and the time is 7 minutes (the plate thickness is 8mm).

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Abstract

The invention discloses an environment-friendly glue free particle board and a preparation method thereof, and belongs to artificial boards prepared by using natural-occurring substances. The environment-friendly glue free particle board is prepared by comprising the following steps: adding water with cane sugar, citric acid and acetic acid to prepare uniform compound additive, weighting the particles, uniformly spraying the compound additive on the surfaces of the particles, then paving the particles uniformly sprayed with the compound additive into a slab, prepressing, and then sending the pre-pressed slab into a thermocompressor to be hot pressed and formed. The raw material used in the invention is pure natural substance non-toxic to the safety of the human body; the integrated physical and mechanical properties of the board made by the compound additive recipe used in the invention is best; the acetic acid used in the invention has functions of bacteriostasis and mildew proofing; through the addition of certain acetic acid, the physical and mechanical properties of the board can be improved; meanwhile the durability can be improved. The physical and mechanical properties of the particle board are good; no free formaldehyde is released; the particle board can be taken as furniture, indoor decorating, packing and the like to use; the preparation method is simple and convenient; the common particle board production line is not needed to be changed to produce.

Description

Technical field [0001] The present invention involves the use of artificial board prepared by pure natural substances. Specifically, it is an environmentally friendly gum -free fragmented material and its preparation method. Background technique [0002] In recent years, my country has become the country with the fastest growing industry output in the world's artificial board.According to statistics from the State Forestry Administration, the total output of Chinese artificial boards in 2010 was 153.883 million m 3 , Rank among the forefront of the world.During the production process of artificial boards, synthetic resin adhesives such as teloamaldehyde resin and phenolic resin must be added.These synthetic resin adhesives are not only expensive (generally more than 1 / 3 of the cost of manufacturing board products), but also consume limited oil resources.In addition, artificial boards produced with tesre resin glue will release free formaldehyde during the use of the product, whic...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/08B27K3/02B27K3/50B27K3/52
Inventor 徐剑莹陈桂华
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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