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Palm wood plywood and preparation method thereof

A palm wood and plywood technology, applied in the field of palm wood plywood and its preparation, can solve the problems of poor product quality, poor mechanical properties and low dimensional stability of the palm wood veneer, and achieve enhanced modified palm veneer, good Promoting and commercial prospects, good effect of dimensional stability

Inactive Publication Date: 2018-11-16
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main disadvantages of existing products: due to the poor properties of palm trees, low strength, large density difference from inside to outside, and strong hygroscopicity, the palm boards prepared by traditional plywood manufacturing processes have poor mechanical properties and low dimensional stability in humid environments. Product quality does not meet the requirements of plywood related standards

Method used

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  • Palm wood plywood and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a palm wood plywood includes a surface board and a core board, the surface board is made of high-density impregnated palm wood veneer, and the core board is made of low-density impregnated palm wood veneer.

[0037] Preparation:

[0038] S1. Rotary cutting of veneer: use a rotary cutting machine to process palm wood into palm wood veneer, and the thickness of palm wood veneer is 3.0mm;

[0039] S2. Primary drying of the veneer: Dry the palm wood veneer in step S1 with a roller dryer, the drying temperature is 150°C-180°C, the drying time is 3-5min, and the moisture content of the dried palm wood veneer Control it at around 12%;

[0040] S3, veneer grading: remove the cracked veneers in the dried palm wood veneers in step S2, and divide them into high-density palm wood veneers and low-density palm wood veneers, and the density level of low-density veneers Use 0.35-0.45g / cm 3 , high-density veneer density grade adopts 0.45-0.56cm 3 ;

[00...

Embodiment 2

[0049] A palm wood plywood, comprising a surface board and a core board, the surface board is made of high-density impregnated palm wood veneer, and the core board is made of low-density impregnated palm wood veneer.

[0050] Preparation:

[0051] S1. Rotary cutting of veneer: use a rotary cutting machine to process palm wood into palm wood veneer, and the thickness of palm wood veneer is 5mm;

[0052] S2. Primary drying of the veneer: drying the palm wood veneer in step S1 with a roller dryer, the drying temperature is 150°C-180°C, and the drying time is 3-5min;

[0053] S3, veneer grading: remove the cracked veneers in the dried palm wood veneers in step S2, and divide them into high-density palm wood veneers and low-density palm wood veneers, and the density level of low-density veneers Use 0.35-0.45g / cm 3 , high-density veneer density grade adopts 0.45-0.56cm 3 ;

[0054] S4. Impregnation of the veneer: The high-density palm wood veneer and the low-density palm wood ve...

Embodiment 3

[0062] A palm wood plywood, comprising a surface board and a core board, the surface board is made of high-density impregnated palm wood veneer, and the core board is made of low-density impregnated palm wood veneer.

[0063] Preparation:

[0064] S1. Rotary cutting of veneer: use a rotary cutting machine to process palm wood into palm wood veneer, and the thickness of palm wood veneer is 8.0mm;

[0065] S2. Primary drying of the veneer: drying the palm wood veneer in step S1 with a roller dryer, the drying temperature is 150°C-180°C, and the drying time is 3-5min;

[0066] S3, veneer grading: remove the cracked veneers in the dried palm wood veneers in step S2, and divide them into high-density palm wood veneers and low-density palm wood veneers, and the density level of low-density veneers Use 0.35-0.45g / cm 3 , high-density veneer density grade adopts 0.45-0.56cm 3 ;

[0067] S4. Impregnation of the veneer: The high-density palm wood veneer and the low-density palm wood ...

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Abstract

The invention discloses palm wood plywood and a preparation method thereof. The plywood comprises a surface board and a core board, a high-density palm impregnated wood single board formed by the impregnating of impregnated resin is adopted as the surface board, a low-density palm impregnated wood single board formed by the impregnating of the impregnated resin is adopted as the core board, the content of the impregnated resin in the high-density palm impregnated wood single board is 20-55%, and the content of the impregnated resin in the low-density palm impregnated wood single board is 30-65%, the solid content of the impregnated resin is 30-50%, urea-formaldehyde resin, phenol formaldehyde resin, melamine resin or melamine modified urea-formaldehyde resin is adopted, and the preparationmethod of the plywood is further disclosed. The palm wood plywood has the advantages that the mechanical performance and the dimensional stability are excellent and can meet related national standards.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels, and in particular relates to a palm wood plywood and a preparation method thereof. Background technique [0002] As an abundant economic forest tree species in Southeast Asia, palm trees mainly use their palm fruit for oil extraction. Generally, when its age exceeds 20 years, its fruit yield declines sharply, and it needs to be cut in rotation. [0003] At present, the felled palm trees have not been effectively developed and utilized, and are often discarded in the woodland to rot naturally, which not only affects the planting of a new round of palm trees, but also easily causes forest pests and environmental problems. Therefore, how to make full use of palm tree resources and develop new wood products has positive significance no matter for saving wood resources, protecting the environment or promoting the sustainable development of forestry industry. [0004] The main disadvantages...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27D1/10B27D5/00B27K3/36
CPCB27D1/08B27D1/10B27D5/00B27K3/36
Inventor 梅长彤周国强崔举庆周晓燕潘明珠
Owner NANJING FORESTRY UNIV
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