Preparation method of high-strength bamboo plywood

A technology of high-strength bamboo and plywood, which is used in the joining of wooden veneers, manufacturing tools, and reed/straw treatment. It can solve the problems of poor mechanical strength and toughness of bamboo plywood, and improve mechanical strength and toughness. , the effect of improving toughness and broad application prospects

Active Publication Date: 2017-11-14
泰州优微轮运动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a kind of preparation method of high-strength bamboo plywood aiming at the problem that the mech

Method used

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  • Preparation method of high-strength bamboo plywood

Examples

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Effect test

example 1

[0023] Take pine sawdust and 20% sodium hydroxide solution with a mass fraction of 1:10, mix them with a mass ratio of 1:10, heat and boil for 1 hour, filter and separate to obtain the filtrate, adjust the pH of the filtrate to 5.5 with a concentration of 1mol / L hydrochloric acid, and then use a centrifuge to Centrifuge at a speed of 3000r / min for 10min, separate and obtain the lower precipitate; add phenol into a four-neck flask equipped with a condenser, a thermometer and a stirrer, heat up to 50°C, start the stirrer to stir and mix at a speed of 100r / min, and Add the above precipitate with 40% phenol mass and alumina powder with 1% phenol mass to the four-necked flask under stirring, heat up to 80°C, keep warm for liquefaction reaction for 20min, and obtain the liquefied product, cool the liquefied product to 45°C, and then Add 5% of the liquefied product mass fraction to 10% formaldehyde solution into the four-neck flask, heat up to 55°C, continue stirring and reacting for ...

example 2

[0025]Take pine sawdust and 20% sodium hydroxide solution with a mass fraction of 1:10, mix them, heat and boil for 2 hours, filter and separate to obtain the filtrate, adjust the pH of the filtrate to 5.8 with a concentration of 1mol / L hydrochloric acid, and then use a centrifuge to Centrifuge at 3500r / min for 13min to separate and obtain the lower precipitate; add phenol to a four-neck flask equipped with a condenser, thermometer and stirrer, heat to 55°C, start the stirrer to stir and mix at 150r / min, Add the above-mentioned precipitate with 40% phenol mass and alumina powder with 1% phenol mass to the four-neck flask under stirring, heat up to 85°C, keep warm for liquefaction reaction for 25min, and obtain the liquefied product, cool the liquefied product to 48°C, and then Add 5% of the liquefied product mass fraction to 10% formaldehyde solution into the four-neck flask, heat up to 60°C, continue stirring and reacting for 55 minutes, and obtain self-made bamboo board glue;...

example 3

[0027] Take pine sawdust and 20% sodium hydroxide solution with a mass fraction of 1:10, mix them with a mass ratio of 1:10, heat and boil for 2 hours, filter and separate to obtain the filtrate, adjust the pH of the filtrate to 6.0 with a concentration of 1mol / L hydrochloric acid, and then use a centrifuge to Centrifuge at a speed of 4000r / min for 15min to separate and obtain the lower precipitate; add phenol to a four-neck flask equipped with a condenser, thermometer and stirrer, heat up to 60°C, start the stirrer to stir and mix at a speed of 200r / min, and Add the above precipitate with 40% phenol mass and alumina powder with 1% phenol mass to the four-necked flask under stirring, heat up to 90°C, keep warm for liquefaction for 30min, and obtain the liquefied product, cool the liquefied product to 50°C, and then Add 5% of the liquefied product mass fraction to 10% formaldehyde solution into the four-neck flask, heat up to 65°C, continue stirring and reacting for 60 minutes, ...

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Abstract

The invention relates to a preparation method of high-strength bamboo plywood, and belongs to the technical field of preparation of building plates. The preparation method comprises the following steps: lignin rich in methoxy and hydroxy is extracted, and is copolymerized with phenol and formaldehyde to obtain environment-friendly lignin base phenolic resin glue; a fraxinus mandshurica board with better flexibility is used as a middle reinforcing layer of the bamboo plywood; firstly, standing micro-corrosion is performed, so that microholes are formed in the surface of the fraxinus mandshurica board; then, micro-blasting treatment is performed on the micro-corroded board to form a new fluid channel; self-made bamboo board glue is used for dipping the board; the glue is dipped into the microholes in the surface of the board and the fluid channel formed in the internal; a firm anchorage gluing effect is formed by a hot pressing effect; and a physical netty cross-linking effect is formed in the bamboo plywood, so that the mechanical performance of the prepared bamboo plywood is improved. The prepared bamboo plywood prominently improves the mechanical strength and the toughness compared with an agony bamboo plywood, and is broad in application prospect.

Description

technical field [0001] The invention relates to a preparation method of high-strength bamboo plywood, which belongs to the technical field of building board preparation. Background technique [0002] At present, the use of bamboo plywood is more and more extensive, and its production technology is also more diverse, as the Chinese utility model patent that publication number is 2325455 discloses a kind of bamboo plywood, and its upper and lower layers are bamboo curtain type close-packed Bamboo structure layer, the wooden core layer between the surface layers is more than two layers of overlapping wood veneer glued layers, or one or more reinforced bamboo curtain layers are embedded in the wooden core layer alternately, which can be adjusted The strength of bamboo-wood plywood is conducive to broadening the scope of application. It is suitable for building templates, box panels, partition panels, floors, decorative panels, etc. Of course, in some processes, the wooden core l...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27D1/10B27K3/52B27K5/00B27K9/00
CPCB27D1/08B27D1/10B27K3/52B27K5/00B27K5/007B27K9/002
Inventor 袁松林茂兰
Owner 泰州优微轮运动科技有限公司
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