A kind of manufacturing method of light-colored outdoor recombined bamboo

A technology for recombining bamboo materials and manufacturing methods, applied in the direction of manufacturing tools, pretreatment and application of molding materials, etc., can solve the problems of poor bonding ability between bamboo fiber bundles and adhesives, damage to the internal structure of bamboo fibers, and damage to the strength of bamboo fibers. Achieve the effect of reducing pigmentation, reducing the degree of damage, and quickly softening

Active Publication Date: 2021-04-20
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of existing bamboo recombined boards are that some composite boards formed by mutual bonding and injection molding of bamboo powder and viscose lose the original woody form of bamboo, and some other composite boards are obtained by extracting bamboo fiber bundles from bamboo chips. The recombined board formed by laying boards, sizing, and bonding will destroy the internal structure of the fiber bundles of bamboo fibers during the process of extracting bamboo fibers from bamboo chips, resulting in an overall decrease in strength. In addition, during the process of extracting fibers from bamboo chips Summary needs to be softened, and its existing technology will greatly deepen the color of bamboo fiber during the softening process, and further rinsing is required to prepare light-colored bamboo fiber bundles. On the one hand, the color produced during the softening process will be removed by rinsing, which will further damage The intensity of bamboo fiber, and increased working procedure, further pollutes the environment, and existing bamboo recombined board exists and the bonding ability of bamboo fiber bundle and glue is poor, needs a large amount of glue to coat bamboo fiber bundle to glue

Method used

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  • A kind of manufacturing method of light-colored outdoor recombined bamboo

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of manufacture method of reconstituted bamboo for light-color outdoors, comprises the following steps,

[0039] (1) Unit preparation: with 100 parts by mass of bamboo slices as raw material, the bamboo slices are placed in 0.4mol / L glacial acetic acid and soaked in 0.4mol / L glacial acetic acid, soaked at 75°C for 5min to carry out primary acylation treatment, remove the glacial acetic acid solution, When the temperature drops to 50°C, add 5mol / L maleic anhydride and dicyclohexylcarbodiimide mixture, soak for 15min, and carry out secondary acylation treatment.

[0040] Put the above secondary acylation-treated bamboo slices into 0.7% second-step softening solution, add 0.5% vitamin C at the same time, and carry out enzymatic hydrolysis for 20 minutes.

[0041] Add vegetable oil to alkaline water for emulsification, put the bamboo slices after enzymatic treatment into the emulsified vegetable oil for 20 minutes,

[0042] After the softening treatment, the softened...

Embodiment 2

[0056] A kind of manufacture method of reconstituted bamboo for light-color outdoors, comprises the following steps,

[0057] (1) Unit preparation: with 100 parts by mass of bamboo slices as raw material, the bamboo slices are placed in 0.4mol / L glacial acetic acid and soaked in 0.4mol / L glacial acetic acid, soaked at 75°C for 15min to carry out primary acylation treatment, remove the glacial acetic acid solution, When the temperature drops to 50°C, add 5mol / L maleic anhydride and dicyclohexylcarbodiimide mixture, soak for 20min, and carry out secondary acylation treatment.

[0058] Put the above secondary acylation-treated bamboo slices into 0.7% second-step softening solution, add 0.5% vitamin C at the same time, and carry out enzymatic hydrolysis for 20 minutes.

[0059] Add vegetable oil to alkaline water for emulsification, put the bamboo slices after enzymatic treatment into the emulsified vegetable oil for 20 minutes,

[0060] After the softening treatment, the softene...

Embodiment 3

[0073] A kind of manufacture method of reconstituted bamboo for light-color outdoors, comprises the following steps,

[0074] (1) Unit preparation: with 100 parts by mass of bamboo slices as raw material, the bamboo slices are placed in 0.4mol / L glacial acetic acid and soaked in 0.4mol / L glacial acetic acid, soaked at 75°C for 5min to carry out primary acylation treatment, remove the glacial acetic acid solution, When the temperature drops to 50°C, add 5mol / L maleic anhydride and dicyclohexylcarbodiimide mixture, soak for 15min, and carry out secondary acylation treatment.

[0075] Put the above secondary acylation-treated bamboo slices into 0.7% second-step softening solution, add 0.5% vitamin C at the same time, and carry out enzymatic hydrolysis for 20 minutes.

[0076] Add vegetable oil to alkaline water for emulsification, put the bamboo slices after enzymatic treatment into the emulsified vegetable oil for 20 minutes,

[0077] After the softening treatment, the softened...

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PUM

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Abstract

The invention discloses a method for manufacturing light-colored recombined bamboo for outdoor use. Bamboo fiber bundles are made by softening, rolling and combing bamboo chips, dipping and sizing in a modified phenolic resin adhesive, and sizing After the bamboo fiber bundles are evenly paved into slabs, they are sent to a hot press for hot pressing. By setting the softening solution for bamboo chips as a multi-step softening solution, the time for soaking and softening in acid or lye in the past is reduced. Glacial acetic acid, dicyclohexylcarbodiimide, and maleic anhydride synergistically undergo acylation reaction. On the one hand, it can quickly decompose sugar, starch, and protein, reduce the damage to the microstructure of cellulose and reduce the molecular bonds of lignin The fracture, the reaction process is mild, it will not deepen the color of the fiber bundles, and the rinsing process is reduced. The phenolic resin adhesive is modified to increase the bonding performance between the bamboo fiber bundles and the phenolic resin, and by adding Fillers are used to increase the overall mechanical properties of the composite board.

Description

technical field [0001] The invention relates to the technical field of production and application of agricultural by-products, in particular to a production method of light-colored outdoor recombined bamboo. Background technique [0002] my country is a country rich in bamboo resources. Applying bamboo to the field of composite panels improves the utilization rate of bamboo on the one hand, and provides a composite panel with excellent performance on the other hand. Bamboo wood fiberboard is a high-tech green environmental protection material mainly made of wood cellulose and plant cellulose as basic materials, thermoplastic polymer materials, plastics and processing aids, etc., mixed evenly and then heated and extruded by mold equipment. The new decorative material has both the performance and characteristics of wood and plastic, and is a new type of composite material that can replace wood and plastic. Not only has the characteristics of elegant appearance, but also has g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/12B27N3/04B27N1/02B27K9/00B27K5/06B27K3/52B27K3/00B27K3/02B27K3/34B27K3/50C09J161/06C09J11/04C09J11/06
CPCB27K3/002B27K3/0207B27K3/34B27K3/50B27K3/52B27K5/06B27K9/002B27N1/0209B27N3/04B27N3/12C08K2003/221C08K2003/2244C09J11/04C09J11/06C09J161/06C08K13/04C08K7/20C08K3/22C08K5/5435
Inventor 周喆喆张晓春宋剑刚张玉卉
Owner ZHEJIANG FORESTRY UNIVERSITY
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