Method for preparing charing bamboo chopsticks

A technology of carbonization and bamboo chopsticks, applied in the direction of manufacturing tools, burning charcoal/burning, wood processing utensils, etc., can solve the problems of affecting the appearance, pests eating, deformation of bamboo chopsticks, etc., achieve good anti-corrosion and insect-proof functions, eliminate living space, The effect of good physical properties

Inactive Publication Date: 2009-05-20
张东升 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In daily life, people often use bamboo to make chopsticks. Although the cost is low, bamboo chopsticks are susceptible to mildew and deterioration due to the high sugar and moisture content in bamboo, and are often eaten by some pests.
After the bamboo chopsticks are eaten by moths, there will be uneven spots and moths in mild cases. Although they can be used, they are not beautiful and the service life is not long. In severe cases, moth holes will be formed, and the bamboo moths will be broken and cannot be used any more.
There are man...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1, in the growing direction of bamboo timber, according to the predetermined certain interval horizontal sawing, each section of bamboo timber is split into four pieces, then the large piece of bamboo timber is placed in the carbonization furnace for shallow and uniform carbonization, and a certain amount of bamboo is passed into the carbonization furnace. Water vapor is used as a protective gas, and carbonization is carried out for 2 hours at a heating rate of 5°C / hour, and the final carbonization temperature reaches 220-240°C. The joints of the obtained carbonized bamboo slices are ground and smoothed. Utilize the chopsticks molding machine (existing) to process and shape, and the surface pattern can be carved by hand.

[0012] The elastic modulus of carbonized bamboo chopsticks is 5305MPa, the static bending strength is 37.75MPa, the shrinkage rate in the chord direction is 1.656%, and the shrinkage rate in the radial direction is 1.238%. The sex decline ...

Embodiment 2

[0013] Embodiment 2, in the growth direction of the bamboo wood, cut it horizontally at certain intervals, split each section of the bamboo wood into four large pieces, then place the large piece of bamboo wood in the carbonization furnace for shallow and uniform carbonization, and feed a certain amount of water vapor into the carbonization furnace As a protective gas, carbonization was performed for 2 hours at a heating rate of 5°C / hour, and the final carbonization temperatures reached 200-220°C. The joints of the obtained carbonized bamboo slices are ground and smoothed. Use the chopsticks molding machine to process and shape, and hand-carve the surface pattern.

[0014] The elastic modulus of carbonized bamboo chopsticks is 5363MPa, the static bending strength is 38.28MPa, the shrinkage rate in the chord direction is 1.996%, and the shrinkage rate in the radial direction is 1.4299%. The sexual decline rate was 47.95%.

Embodiment 3

[0015] Embodiment 3, the growth direction of bamboo is cut horizontally at a certain interval, and each section of bamboo is split into four large pieces, and the large piece of bamboo is placed in a carbonization furnace for shallow and uniform carbonization, and a certain amount of water vapor is passed into the carbonization furnace as Protective gas, with a heating rate of 5°C / hour, carbonize for 2 hours, and the final carbonization temperature reaches 180-200°C or 160-180°C respectively. The joints of the obtained carbonized bamboo slices are ground and smoothed. Use the chopsticks molding machine to process and shape, and hand-carve the surface pattern.

[0016] The elastic modulus of uncarbonized bamboo is 5607MPa, the static bending strength is 50.75MPa, and the impact toughness is 17.8KJ / m 2 , and the elastic modulus of the prepared carbonized bamboo chopsticks is 6167MPa, the static bending strength is 45.32MPa, and the impact toughness is 17.5KJ / m 2 ; The chord sh...

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Abstract

The invention relates to a method for preparing carbonized bamboo chopsticks by utilizing carbonized bamboo chips with uniform shallowness, which is characterized in that the method comprises the process steps: 1. the pretreatment of a bamboo material, in which the bamboo material is transversely sawn at intervals along the length direction of the bamboo material, and each section of sawn bamboo material is chopped into four pieces; 2. bamboo material carbonization with uniform shallowness, in which the large bamboo materials are placed into a carbonization furnace, water vapor is introduced as shielding gas, the carbonization is performed for 2 to 3 hours at a temperature increase rate of between 5 and 10 DEG C/h, and finally the carbonization temperature reaches between 160 to 180 DEG C, 180 to 200 DEG C, 200 to 220 DEG C, and 220 to 40 DEG C respectively; and 3. the preparation of the carbonized bamboo chopsticks, in which joints of the obtained carbonized bamboo chips are subjected to grinding processing to be prepared into flat boards, and then a chopstick forming machine is utilized for processing to be formed. The method has the advantages that the carbonized bamboo chopsticks are not added with any chemical agent during the production, has no pollution and simple treatment process, and has the advantages of good durability, dimensional stability, moisture protection, mold prevention, moth prevention, sterilization, powerful self-purification function and so on.

Description

technical field [0001] The invention relates to a method for preparing carbonized bamboo chopsticks by utilizing shallow and uniform carbonized bamboo slices. The invention belongs to the technical field of bamboo chopsticks preparation. Background technique [0002] In daily life, people often use bamboo to make chopsticks. Although the cost is low, bamboo chopsticks are susceptible to mildew and deterioration due to the high sugar and water content in bamboo, and are often eaten by some pests. After bamboo chopsticks are eaten by moths, there will be uneven patterns and moths in mild cases. Although they can be used, they are not beautiful and the service life is not long. There are many anti-moth methods, such as high-temperature treatment, paint treatment, chemical treatment, etc. Although these treatment methods can achieve the purpose of anti-moth, but these methods have their own disadvantages. The glucose group in the cellulose macromolecule contained in it will un...

Claims

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Application Information

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IPC IPC(8): B27M3/24B27M1/06
Inventor 张东升周建斌
Owner 张东升
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