Low-temperature oil-heat bamboo modifying processing method

A processing method and thermal modification technology, which is applied in wood processing equipment, wood treatment, wood heating, etc., can solve the problems of long technical treatment cycle and the influence of bamboo physical and mechanical properties, so as to improve the anti-corrosion and mildew resistance and the long-lasting protection effect , the effect of improving work efficiency

Active Publication Date: 2017-12-08
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has a long treatment cycle and has a certain impact on the physical and mechanical properties of bamboo.

Method used

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  • Low-temperature oil-heat bamboo modifying processing method
  • Low-temperature oil-heat bamboo modifying processing method
  • Low-temperature oil-heat bamboo modifying processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Bamboo drying: take moso bamboo as an example, first process it into bamboo strips with a thickness of 6mm, and dry the bamboo to a moisture content of 12%;

[0026] (2) Prepare the solution: add maleic anhydride to tung oil at a temperature of 70°C, the mass ratio of tung oil to maleic anhydride is 1:20, start the stirrer, and stir until completely mixed;

[0027] (3) Solution heating: heat the prepared mixed oil solution to 140°C;

[0028] (4) Treatment stage: immerse the bamboo in constant temperature hot oil and heat it for 1 hour;

[0029] (5) Surface treatment: take out the bamboo, wipe off the excess oil solution on the surface, and then cool and dry in the natural environment;

[0030] (6) End-capping treatment: Carbonize the cross-section of the fully dried bamboo.

Embodiment 2

[0032] (1) Bamboo drying: take moso bamboo as an example, first process it into bamboo strips with a thickness of 6mm, and dry the bamboo to a moisture content of 12%;

[0033] (2) Prepare the solution: add maleic anhydride to soybean oil at a temperature of 70°C, the mass ratio of soybean oil to maleic anhydride is 1:10, start the agitator, and stir thoroughly until completely mixed;

[0034] (3) Solution heating: heat the prepared mixed oil solution to 140°C;

[0035] (4) Treatment stage: immerse the bamboo in constant temperature hot oil and heat it for 1 hour;

[0036] (5) Surface treatment: take out the bamboo, wipe off the excess oil solution on the surface, and then cool and dry in the natural environment;

[0037] (6) End-capping treatment: Carbonize the cross-section of the fully dried bamboo.

Embodiment 3

[0039] (1) Bamboo drying: take moso bamboo as an example, first process it into bamboo strips with a thickness of 6mm, and dry the bamboo to a moisture content of 12%;

[0040] (2) Prepare the solution: add maleic anhydride to tung oil at a temperature of 70°C, the mass ratio of tung oil to maleic anhydride is 1:20, start the stirrer, and stir until completely mixed;

[0041] (3) Solution heating: heat the prepared mixed oil solution to 140°C;

[0042] (4) Treatment stage: immerse the bamboo in constant temperature hot oil, and heat it for 0.5h;

[0043] (5) Surface treatment: take out the bamboo, wipe off the excess oil solution on the surface, and then cool and dry in the natural environment;

[0044] (6) End-capping treatment: Carbonize the cross-section of the fully dried bamboo.

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Abstract

The invention discloses a low-temperature oil-heat bamboo modifying processing method. By means of the method, the mechanical property of bamboo can be improved, the waterproof effect of the bamboo can be better, the anti-corrosive durability is improved, and therefore the application field of the bamboo is widened. The method comprises the following steps of (1) drying the bamboo, (2) adding a coupling agent into oil for preparing an oil solution, (3) heating the oil solution, (4) immersing the bamboo into constant-temperature heated oil for treatment, (5) conducting surface treatment and (6) conducting end-capping treatment. The dimensional stability of the bamboo treated according to the method is improved, the anti-corrosion, mold-proof and waterproof properties of products are improved, and the mechanical property does not decline. After the cross section of the bamboo is subjected to end-capping treatment, the loss of a modifying agent can be effectively reduced, and the protecting effect is more lasting.

Description

technical field [0001] The invention belongs to the technical field of biomass material processing, and in particular relates to a heat treatment and impregnation treatment method for bamboo, in particular to a heat treatment and impregnation treatment method using oil as a medium. Background technique [0002] Bamboo is an advantageous resource in our country, and bamboo has advantages such as fast production speed, high output, and good mechanical properties. It is widely used in various fields, such as building materials, transportation materials, engineering materials, etc. The anisotropy of bamboo and the nutrients in bamboo make problems such as cracking and mildew due to changes in temperature and humidity during application. The main reason is that bamboo has a high water content. Therefore, it is necessary to control the reasonable moisture content before the modification of bamboo. [0003] Heat treatment is a relatively mature technology in material modification....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/04B27K3/50B27K5/00B27K9/00B27M1/06
CPCB27K3/0214B27K3/04B27K3/50B27K5/001B27K9/002B27K2240/20B27M1/06
Inventor 费本华唐彤陈秀芳张波吕黄飞陈礼生
Owner INT CENT FOR BAMBOO & RATTAN
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