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Processing method of bamboo blackening

A processing method and bamboo technology, applied in the processing field of blackening of bamboo, can solve the problems of insignificant increase in product value, poor gluing effect of bamboo, poor interface fusion, etc. low cost effect

Inactive Publication Date: 2012-11-28
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of bamboo gluing processing, there are two main technical routes: one is to immerse the resin adhesive into the bamboo, relying on the linkage of the resin to promote the gluing of the bamboo, but the bamboo is dense and the resin is difficult to immerse, resulting in poor gluing effect of the bamboo The second is to mix the resin adhesive with wood (bamboo) evenly, and form it through extrusion, molding, injection and other processes, that is, bamboo composite materials, and the developed bamboo composite materials are difficult to industrialize because of poor interface fusion. At the same time, the amount of adhesive added is at least 12%, and the price is 3 to 5 times that of bamboo raw materials, resulting in a substantial increase in cost, while the product value increase is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A processing method for blackening bamboo, comprising the following steps:

[0012] (1) Raw material preparation: crush bamboo and bamboo processing residues into bamboo powder below 10 mesh, according to the mass ratio m 竹粉 :m 黑化剂 =100:0.1, bamboo powder and blackening agent are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 55%; blackening agent is composed of iron molybdate, zinc borate, ammonium polyphosphate, titanium dioxide by mass ratio m 钼酸铁 :m 硼酸锌 :m 聚磷酸铵 :m 二氧化钛 =1:1.5:2:6 mixed;

[0013] (2) Blackening forming: the bamboo powder raw material is evenly spread into the stainless steel mold, and then the temperature and pressure are raised. When the temperature rises to 180°C and the pressure rises to 3MPa, the pressure is kept for 70 minutes, and then the pressure is maintained, and the heating is stopped. , slowly cool to room temperature, and release the pressure to obtain the blackened bamboo board;...

Embodiment 2

[0015] A processing method for blackening bamboo, comprising the following steps:

[0016] (1) Raw material preparation: crush bamboo and bamboo processing residues into bamboo powder below 10 mesh, according to the mass ratio m 竹粉 :m 黑化剂 =100:0.2, bamboo powder and blackening agent are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 60%; blackening agent is composed of iron molybdate, zinc borate, ammonium polyphosphate, titanium dioxide by mass ratio m 钼酸铁 :m 硼酸锌 :m 聚磷酸铵 :m 二氧化钛 =2.0:1.0:4:5 mixed;

[0017] (2) Blackening molding: The bamboo powder raw material is evenly spread into the stainless steel mold, and then the temperature and pressure are raised. When the temperature rises to 190°C and the pressure rises to 4MPa, keep the pressure for 50 minutes, then keep the pressure and stop heating , slowly cool to room temperature, and release the pressure to obtain the blackened bamboo board; wherein during paving, th...

Embodiment 3

[0019] A processing method for blackening bamboo, comprising the following steps:

[0020] (1) Raw material preparation: crush bamboo and bamboo processing residues into bamboo powder below 10 mesh, according to the mass ratio m 竹粉 :m 黑化剂 =100:0.3, bamboo powder and blackening agent are evenly mixed to obtain bamboo powder raw material; wherein the moisture content of bamboo powder is 65%; blackening agent is composed of iron molybdate, zinc borate, ammonium polyphosphate, titanium dioxide by mass ratio m 钼酸铁 :m 硼酸锌 :m 聚磷酸铵 :m 二氧化钛 =2.5:0.5:5.0:5.5 mixed;

[0021] (2) Blackening molding: the bamboo powder raw material is evenly spread into the stainless steel mold, and then the temperature and pressure are raised. When the temperature rises to 200 and the pressure rises to 4MPa, the pressure is kept for 40 minutes, and then the pressure is maintained, and the heating is stopped. Slowly cool to room temperature and remove the pressure to obtain the blackened bamboo board;...

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Abstract

The invention discloses a processing method of bamboo blackening, which comprises the following steps: (1) preparing a material: crushing bamboo and processing residues of bamboo into bamboo power below 10 meshes, and mixing the bamboo power with a blackening agent uniformly to obtain a bamboo powder raw material according to the mass ratio of m[bamboo] to m[blackening agent] of (100:0.1)-(100:0.5); and (2) blackening and forming: paving the bamboo powder raw material into a stainless steel mold uniformly, heating and boosting, keeping the pressure and temperature for 30-70 minutes when the temperature rises to 180 DEG C-210 DEG C and the pressure rises to 3 MPa-5 MPa, keeping the pressure, stopping heating, cooling to the room temperature slowly, and releasing the pressure, so as to obtain a blackened bamboo board. The processing method of bamboo blackening is easy to realize and operate and low in production cost.

Description

technical field [0001] The invention relates to a processing method for blackening bamboo, in particular to a method for making blackened bamboo boards by using bamboo. 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 plywood, flooring, particle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/06
Inventor 彭万喜徐士强邓和平
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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