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Preparation method of bamboo veneer and bamboo glue composite board

A composite board and veneer technology, which is used in the joining of wooden veneers, manufacturing tools, and reed/straw treatment, etc., can solve the problems of low mechanical properties, unfavorable promotion and application of bamboo plywood, and decreased mechanical properties.

Active Publication Date: 2021-07-27
桃江县三桥竹业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the current bamboo plywood are low, and in the humid and high temperature environment, the mechanical properties of bamboo will decrease and deform due to water absorption, which is undoubtedly not conducive to the popularization and application of bamboo plywood.

Method used

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  • Preparation method of bamboo veneer and bamboo glue composite board
  • Preparation method of bamboo veneer and bamboo glue composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of bamboo veneer;

[0035] Add the bamboo chips to the pretreatment solution, heat up to 50°C and cook for 50 minutes, take out the water and wash to neutrality, then air dry to a moisture content of 10%, and then send the bamboo chips into the decompression equipment, and the bamboo wood is subjected to longitudinal treatment by decompression rollers. The cutting force caused the bamboo pieces to form point-shaped and line-shaped cracks, and at the same time, a force was applied in the radial direction to flatten and stretch to form a fibrous bamboo veneer. , heat up to 70 ℃ and cook for 30 min, take out the water and wash until neutral, air dry to 10% moisture content, put the bamboo veneer in a heat treatment equipment with an oxygen content of 2.5%, heat up to 180 ℃ for 60 min, and then cool down The temperature was kept at 80°C for 40min, and after being naturally cooled to room temperature, it was transferred to the carbonization equipment for...

Embodiment 2

[0042] A preparation method of bamboo veneer;

[0043] Add the bamboo chips to the pretreatment solution, heat up to 50°C and cook for 40 minutes, take out the water and wash to neutrality, then air dry to a moisture content of 10%, and then send the bamboo chips into the decompression equipment, and the bamboo wood is subjected to longitudinal treatment by decompression rollers. The cutting force caused the bamboo pieces to form point-shaped and line-shaped cracks, and at the same time, a force was applied in the radial direction to flatten and stretch to form a fibrous bamboo veneer. , heat up to 70 ℃ and cook for 20 min, take out the water and wash until neutral, then air dry to a moisture content of 7%, put the bamboo veneer in a heat treatment equipment with an oxygen content of 2%, heat up to 160 ℃ for 60 min, and then cool down The temperature was kept at 80°C for 40 minutes, and after being naturally cooled to room temperature, it was transferred to the carbonization e...

Embodiment 3

[0050] A preparation method of bamboo veneer;

[0051] Add bamboo slices to the pretreatment liquid, heat up to 60°C and cook for 60 minutes, take out and wash with water until neutral, then dry to a moisture content of 16%, and then send the bamboo slices into the decompression equipment, and apply longitudinal dehydration to the bamboo by decompression rollers. The cutting force makes the bamboo slices form point-like and segment-like cracks, and at the same time exerts force in the radial direction to make it flatten and stretch to form a fibrous bamboo veneer, which is decomposed 5 times, and the bamboo veneer is added to the post-treatment solution In the middle, heat up to 80°C and cook for 30 minutes, take it out and wash it to neutral, then dry it to a moisture content of 10%, put the bamboo veneer in a heat treatment equipment with an oxygen content of 2.5%, heat up to 180°C for 90 minutes, and then cool down Keep warm at 100°C for 50 minutes, cool to room temperature...

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Abstract

The invention relates to the field of building materials, in particular to a preparation method of a bamboo veneer and a bamboo glue composite board. The preparation method specifically comprises the following steps that S1, bamboo chips are treated with pretreatment liquid; S2, defibering is conducted; S3, the bamboo chips are treated with post-treatment liquid; S4, the bamboo chips are subjected to heat treatment and then subjected to carbonization treatment; and S5, drying is conducted. The bamboo glue composite board provided by the invention has good mechanical properties (the density is greater than or equal to 1.16, the static bending intensity is greater than or equal to 273.64 MPa, the elastic modulus is greater than or equal to 26.93 GPa, the tensile strength is greater than or equal to 239.90 MPa, and the compressive strength is greater than or equal to 151.60 MPa), and has excellent moisture-proof and water-resistant properties (the water absorption thickness swelling rate is less than or equal to 0.37%, and the water absorption rate is less than or equal to 0.56).

Description

technical field [0001] The invention relates to the field of building materials, in particular to a preparation method of a bamboo veneer and a bamboo-plastic composite board. Background technique [0002] As a kind of abundant forestry resources, bamboo is called "the second forest". China is rich in bamboo resources, with a bamboo forest area of ​​4,842,600 hm2 2 It is easy to cultivate and grow into a forest quickly. It can be felled in three to five years. It can be used instead of wood in certain scenarios, and has broad application prospects. [0003] Bamboo plywood is a building material that is made of moso bamboo as the main structure and filling material, and is formed into blanks by high pressure. It has a wide range of uses, suitable for horizontal formwork, shear wall, vertical wall panel, viaduct, tunnel subway and beam pile formwork in house construction, and also widely used in various containers, packing boxes, car and train floor, household floor, indoor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/08B27M1/06B27M1/08B27K9/00B27K3/52B27K3/20B27K3/34B27K3/50B27K3/38B27K3/36B27K5/00
CPCB27D1/08B27M1/06B27M1/08B27K9/002B27K3/52B27K3/20B27K3/34B27K3/50B27K3/38B27K3/36B27K5/0085B27K2240/70Y02E50/10
Inventor 陈志高
Owner 桃江县三桥竹业有限责任公司
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