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High-strength fiberboard and manufacturing method thereof

A high-strength fiber and fiber technology, which is applied in the manufacture of high-strength fiberboard and the field of high-strength fiberboard, to achieve the effects of protecting the ecological environment, good social and economic benefits, and high strength

Inactive Publication Date: 2011-09-14
云南工业大麻股份有限公司 +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, how to use the existing wood-based panel manufacturing equipment to prepare fiberboards with excellent performance through appropriate process innovations has not been reported in the prior art.

Method used

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  • High-strength fiberboard and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Raw materials are crushed, and the raw materials of industrial hemp stalks are humidified. After the treatment, the moisture content of the raw materials is 40%, and the industrial hemp stalks are cut by a disc chipper to prepare 1-2 cm in length. In order to reduce the heat grinding difficulty of the phloem and reduce the adverse effects on the wood-based panel vegetation caused by the excessively long phloem, and give full play to the high strength of the bast of industrial hemp stalks, it can strengthen the industrial hemp stalk fiberboard. Using a high-temperature and high-pressure cooker, cook at a temperature of 100° C. for 3.0 h, and then use a disc mill to grind the softened crushed material with a gap of 0.5 mm between the discs to obtain industrial hemp stalk fibers. The fibers are then dehydrated. This breaks through the technical problem that the cortex of industrial hemp stalks has strong toughness and is difficult to prepare qualified fibers, and also ...

Embodiment 2

[0027] Repeat Example 1, with the following differences: the cooking temperature is 110° C., the cooking time is 2 hours, and the gap between the grinding discs is 0.8 mm. The test results are shown in Table 1.

Embodiment 3

[0029] Repeat Example 1, with the following differences: the adhesive used is 10% melamine-modified urea-formaldehyde resin adhesive, and the test results are shown in Table 1.

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Abstract

The invention discloses a high-strength fiberboard and a manufacturing method thereof. The manufacturing method comprises the following steps of: grinding an industrial hemp stalk, and then manufacturing fibers through stewing, millstone milling and dehydration; then adding 10-16 percent of adhesives; and then manufacturing the high-strength fiberboard through hot pressing. In the invention, the fiberboard is initiatively manufactured by utilizing the characteristics of high strength, porosity and low density of the industrial hemp stalk; compared with a similar wooden fiberboard product, theproduct disclosed by the invention has the advantages of low density, high strength and good load-bearing property; in addition, by implementing the technology disclosed by the invention, not only the wood resources is outstandingly saved and the ecological environment is protected, but also the wastes are changed into valuables, and a new way for the application of industrial hemps is provided; and the invention is beneficial to promoting the further development of an industrial hemp industry and has 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 fiberboard prepared by using industrial hemp stalks. At the same time, the invention also relates to a manufacturing method of the high-strength fiberboard. 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 designed for industrial use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N3/08
Inventor 李晓平胡光叶喜吴章康杜官本陈文伟
Owner 云南工业大麻股份有限公司
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