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High-strength light plate material and manufacture method thereof

A high-strength, plate technology, applied in the direction of manufacturing tools, flat products, wood processing appliances, etc., to achieve good thermal insulation performance, low manufacturing cost, and good dimensional stability

Inactive Publication Date: 2011-10-19
SOUTHWEST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the material characteristics of industrial hemp stalks, using the existing wood-based panel manufacturing equipment, through appropriate technological innovations to prepare low-cost, high-strength lightweight insulation materials, there is no relevant report in the prior art

Method used

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  • High-strength light plate material and manufacture method thereof
  • High-strength light plate material and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation of industrial hemp rod lightweight solid particleboard

[0022] Adjust the moisture content of industrial hemp stalks to 30-50%. After peeling off the skin of the hemp stalks, use a chipper to crush the obtained stalk cores into 5-10cm long pieces, and then use a double-drum planer to further break the pieces. into shavings, and use a screening machine to screen to obtain qualified shavings with a length of 5-10mm, a thickness of 3-5mm, and a width of 3-5mm. Use a rotor dryer to dry the shavings to a moisture content of 3-5% at a temperature of 140°C; then use a high-atomization glue sprayer to apply urea-formaldehyde resin glue to the dried raw materials, with a sizing amount of 2%, and sizing The final moisture content is controlled at 8-10%. The shavings after sizing are paved with a mechanical paving machine, and the slab is pre-pressed with a pressure of 0.1MPa to prepare a board with a density of 0.25g / cm 3 lightweight particleboard. Under...

Embodiment 2

[0024] Repeat Example 1, with the following differences: 10 mesh but 20 mesh shavings are selected; the test results are shown in Table 1.

Embodiment 3

[0026] Repeat Example 1, with the following differences: choose 20 mesh but 30 mesh scraps; the test results are shown in Table 1.

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Abstract

The invention discloses a high-strength light plate material and a manufacture method thereof. After industrial hemp stems are smashed into wood shavings or manufactured into fibers, 0.5-5% of adhesive is added, and then the high-strength light plate material is obtained after hot-pressing. In the technology, the light heat insulating material is prepared by using the characteristics of high strength, porosity and light weight of the industrial hemp stems. The product has the advantages of low manufacture cost, beautiful appearance, good heat insulating property, high mechanical intensity and good size stability, can be naturally degraded, is environmentally-friendly, is free from pollution and is convenient to realize industrial production. The high-strength light plate material can be used for replacing non-renewable materials, such as foamed plastics, perlite and the like. The high-strength light plate material can be widely used for the sandwich layer materials in fields such as wood structure buildings, partition walls, door planks and the like and can be used for light buffering materials, such as packaging cushion blocks and the like. The technology can change waste materials into things of value, provides a new path for applying industrial hemp stems, is favorable for popularizing the further development of the industrial hemp stem industry and has the advantages of good social benefit and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of wood-based panel processing, and in particular relates to a high-strength light-weight panel prepared with industrial hemp stalks as the main raw material. At the same time, the invention also relates to a manufacturing method of the lightweight plate. Background technique [0002] Cannabis is a woody herbaceous plant belonging to the phylum Angiosperms, Magnolia, Hamamelis, Urtica, Cannabis, Cannabis genus, scientific name Cannabis sativa L. , commonly known as hemp, hemp, cold hemp, thread hemp, flower hemp, etc. There are about 150 varieties. The "United Nations Convention against Illicit Trafficking in Narcotic Drugs and Psychotropic Substances" promulgated in 1988 clearly stipulates that cannabis plants containing tetrahydrocannabinol (THC) < 0.3% no longer have the value of extracting THC toxic components, and there is no direct smoking as drugs. Value, this kind of hemp variety specially desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27N3/12B27N3/14B27N3/18
Inventor 李晓平胡光吴章康叶喜杜官本陈文伟李志权
Owner SOUTHWEST FORESTRY UNIVERSITY
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