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Method for manufacturing self-plasticizing bamboo board

A manufacturing method and technology of bamboo boards, applied in the direction of manufacturing tools, wood processing appliances, etc., can solve the problems of insignificant product value increase, poor plasticization effect of bamboo, and poor interface fusion, so as to broaden the way of processing and utilization, increase the The effect of low income and production cost of forest farmers

Inactive Publication Date: 2014-06-11
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field of wood (bamboo) plasticization processing, there are mainly two technical routes: one is to impregnate the resin into the wood or bamboo, and rely on the plasticity of the resin to promote the plasticization of the wood or bamboo. The porosity of the wood is high, and the resin is easy to immerse. , the plasticizing effect is good, but the bamboo material is dense, and the resin is difficult to immerse, resulting in poor plasticizing effect of the bamboo material; the second is to mix the plastic and wood (bamboo) evenly, and form them by extrusion, molding, injection and other processes, that is, wood-plastic composite wood or bamboo-plastic composites, and the developed bamboo-plastic composites are difficult to be industrialized due to poor interface fusion. At the same time, the amount of plastic added is at least 30%, and the price is 2 to 5 times that of wood and bamboo raw materials, resulting in a substantial increase in cost. Product value increase is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of manufacture method of self-plasticizing bamboo board, is made up of the following steps:

[0013] (1) material preparation: bamboo is pulverized into 20 purpose bamboo powder, by mass ratio m 竹粉 :m 塑化引 发剂 =100: 0.1, bamboo powder and plasticizing initiator are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 20%; plasticizing initiator is made of polyvinyl alcohol, polyethylene glycol by mass ratio m 聚乙烯醇 :m 聚乙二醇 = 1:10 mixed;

[0014] (2) Self-plasticizing molding: Pave bamboo powder raw materials evenly into stainless steel molds, then start to heat up and increase the pressure. When the temperature rises to 160°C and the pressure rises to 9MPa, keep the pressure for 90 minutes, then keep the pressure and stop Heating, slowly cooling to room temperature, and releasing the pressure to obtain self-plasticized bamboo boards; wherein during paving, the paving surface of bamboo powder raw materials cannot exc...

Embodiment 2

[0016] A kind of manufacture method of self-plasticizing bamboo board, is made up of the following steps:

[0017] (1) material preparation: bamboo is crushed into 80 purpose bamboo powder, by mass ratio m 竹粉 :m 塑化引 发剂 =100: 0.2, bamboo powder and plasticizing initiator are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 30%; plasticizing initiator is made of polyvinyl alcohol, polyethylene glycol by mass ratio m 聚乙烯醇 :m 聚乙二醇 = 0.5:10 mixed;

[0018] (2) Self-plasticizing molding: Pave bamboo powder raw materials evenly into stainless steel molds, then start to heat up and increase the pressure. When the temperature rises to 170°C and the pressure rises to 12MPa, keep the pressure for 30 minutes, then keep the pressure and stop Heating, slowly cooling to room temperature, and releasing the pressure to obtain self-plasticized bamboo boards; wherein during paving, the paving surface of bamboo powder raw materials cannot exc...

Embodiment 3

[0020] A kind of manufacture method of self-plasticizing bamboo board, is made up of the following steps:

[0021] (1) material preparation: bamboo is pulverized into 150 purpose bamboo powder, by mass ratio m 竹粉 :m 塑化 引发剂 =100: 0.3, bamboo powder and plasticizing initiator are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 40%; plasticizing initiator is made of polyvinyl alcohol, polyethylene glycol by mass ratio m 聚乙烯醇 :m 聚乙二醇 = 0.8:10 mixed;

[0022] (2) Self-plasticizing molding: Pave bamboo powder raw materials evenly into stainless steel molds, then start to heat up and increase the pressure. When the temperature rises to 180°C and the pressure rises to 18MPa, keep the pressure for 60 minutes, then keep the pressure and stop Heating, slowly cooling to room temperature, and releasing the pressure to obtain self-plasticized bamboo boards; wherein during paving, the paving surface of bamboo powder raw materials cannot...

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PUM

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Abstract

The invention discloses a method for manufacturing a self-plasticizing bamboo board. The method comprises the following steps of (1) material preparation: crashing a bamboo material into bamboo powder with a size of 20-200 meshes, uniformly mixing the bamboo powder and plasticizing initiator according to a mass ratio of m bamboo powder to m plasticizing initiator being equal to 100 to 0.1 to 100 to 0.4, obtaining a bamboo powder raw material; (2) self-plasticizing molding: uniformly placing the bamboo powder raw material in a stainless steel die, and then rising the temperature and increasing the pressure, when the temperature rises at 160 to 200 DEG C, and when the pressure is increased at 9 to 21 MPa, keeping the pressure and temperature for 10 to 90 min, and then keeping the pressure, stopping heating, slowly cooling to a room temperature, relieving the pressure, obtaining the self-plasticizing bamboo board. The method provided by the invention can be easily realized, the operation is convenient, the production cost is low, thus, the method is suitable for being used for large-scale production; and moreover, the processing and utilization routes of the bamboo material are widened, and larger utilization of bamboo material resources is realized simultaneously.

Description

technical field [0001] The invention relates to a method for manufacturing self-plasticized bamboo boards, in particular to a method for using bamboo to manufacture self-plasticized bamboo boards. Background technique [0002] Bamboo is one of the world-renowned fast-growing and high-yield plants, and it is also one of the first-selected fast-growing afforestation plants in tropical and subtropical regions. At present, bamboo is mainly distributed in Asia, America, Africa and other places, especially China, India, Japan, Myanmar and other countries plant a large number of bamboo plantations, with an area of ​​20 million hectares and an annual output of 18 million tons of bamboo. There are more than 130 counties (cities) with a bamboo forest area of ​​more than 10,000 hectares in my country, with a total area of ​​7 million hectares. Bamboo plantations have a short period of maturity, high output, straight stems, dense materials, and slender fibers. The main products include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/08
Inventor 彭万喜薛秋林芝吴庆定张仲凤
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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