CN101818467A - Method for manufacturing cellulose micro-nano-material enhanced adhesive by using enzyme treatment and mechanical method - Google Patents
Method for manufacturing cellulose micro-nano-material enhanced adhesive by using enzyme treatment and mechanical method Download PDFInfo
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- CN101818467A CN101818467A CN 201010134344 CN201010134344A CN101818467A CN 101818467 A CN101818467 A CN 101818467A CN 201010134344 CN201010134344 CN 201010134344 CN 201010134344 A CN201010134344 A CN 201010134344A CN 101818467 A CN101818467 A CN 101818467A
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Abstract
本发明是用酶处理和机械法制造纤维素微纳米材料增强胶粘剂的方法，主要工艺步骤：选用木材纸浆纤维为原料，在分散状态下自然晾干；将自然晾干的木材纸浆纤维粉碎、筛选；在反应容器中加人筛选后的木材纸浆纤维和pH4.8的柠檬酸磷酸氢二钠缓冲液进行酶处理；采用高压纳米均质器、或超声波细胞破碎仪机械加工方式将酶处理后的纤维制造成纤维素微纳米材料；将纤维素微纳米材料添加到水溶性的酚醛或脲醛树脂胶粘剂中施加到单板、或纤维、或刨花表面；经过组坯或铺装成型、热压制造成人造板。优点：是利用酶处理结合机械法制造出可生物降解的纤维素微纳米材料加入到胶粘剂中，从而提高了人造板胶粘剂的胶合强度，使人造板的性能改善、用途扩大。The present invention is a method for manufacturing cellulose micro-nano material-reinforced adhesive by enzyme treatment and mechanical method. The main process steps are: selecting wood pulp fiber as raw material, and drying naturally in a dispersed state; crushing and screening the naturally-dried wood pulp fiber ; Add the screened wood pulp fiber and pH4.8 disodium hydrogen phosphate buffer in the reaction vessel for enzyme treatment; The fibers are made into cellulose micro-nano materials; the cellulose micro-nano materials are added to water-soluble phenolic or urea-formaldehyde resin adhesives and applied to the surface of veneer, or fiber, or shavings; formed into artificial Board making. Advantages: Biodegradable cellulose micro-nano materials are produced by enzyme treatment combined with mechanical methods and added to the adhesive, thereby improving the bonding strength of the wood-based panel adhesive, improving the performance of the wood-based panel, and expanding the use.
Description
Technical field:
What the present invention relates to is that a kind of enzyme that utilizes is handled the method that strengthens adhesive in conjunction with Mechanical Method manufacturing cellulose micro-nano-material.Belong to the technical field that wood-based plate is made.
Background technology
Wood-base fibre and particle panel material is by the product of adhesive with unit such as veneer, wood shavings, fiber gummed mostly, the bonding strength of adhesive is very big to the serviceability influence of wood-based panel product, can improve the performance of wood-based plate, the application approach of expansion wood-based plate by the enhancing adhesive.From natural fabric isolated little/fibril of receiving is a kind of light weight, environmental friendliness, biodegradable polymer, has very high mechanical property, is comparatively ideal reinforcing material.The present invention utilizes the enzyme processing to produce cellulose micro-nano-material in conjunction with Mechanical Method to join in the adhesive, reaches the purpose that increases adhesive gummed intensity.
Summary of the invention:
The present invention proposes a kind of enzyme that utilizes and handle the method that strengthens adhesive in conjunction with Mechanical Method manufacturing cellulose micro-nano-material.Its objective is that utilizing biodegradable native cellulose micro Nano material to join increases its bonding strength in the adhesive, thereby improve the performance of wood-based plate and the application approach of expansion wood-based plate.
Technical solution of the present invention is handled with enzyme and the method for Mechanical Method manufacturing cellulose micro-nano-material enhanced adhesive, it is characterized in that this method comprises following processing step:
One, raw material drying, selecting the wood pulp fiber for use is raw material, dries naturally under dispersity, makes its moisture content reach 15-20%;
Two, pulverize and screening, the wood pulp fiber that dries naturally is pulverized, screen then, make the fibre fineness after the screening reach the 40-180 order;
Three, enzyme is handled, at first in reaction vessel, add wood pulp fiber after the people screening and the citric acid phosphoric acid disodium hydrogen buffer solution (both weight ratios: 1kg wood pulp fiber adds 20kg citric acid-phosphate sodium dihydrogen buffer solution) of pH4.8, make temperature remain on 50 ℃, add cellulase (add than row: 1 gram wood pulp fiber adds the 10-20FPU cellulase) in reactor, enzyme processing time is 4-8 hour;
Four, machining, wood pulp fiber after enzyme is handled dries the back naturally and adopts the mode of high pressure nano homogenizer or ultrasonic cell disruption instrument machining that it is manufactured cellulose micro-nano-material, wherein, the pressure of high pressure nano homogeneous is 1000-2000bar, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5-1.0%; The power 450-600W of ultrasonic cell disruption instrument, amplitude 80-100, broken time are 0.5-1.5 hour, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5-1.5%;
Five, mix, the cellulose micro-nano-material for preparing added in water miscible phenolic resins or the urea-formaldehyde resin adhesive, the weight ratio of interpolation be 1 part of solid little/fibril of receiving adds 20～100 parts of hard resins;
Six, applying glue is applied to wood-based plate unit such as veneer or wood shavings or fiberboard surface with the adhesive of artificial board that mixes cellulose micro-nano-material, wherein, the two-sided applying glue liquid glue of veneer amount be 280-380 gram/square metre; The percentage by weight of the applying glue solid gum amount of wood shavings or fiberboard is 8-12%;
Seven, hot pressing, with the wood-based plate unit after the applying glue such as veneer or shaving board or fiberboard, after the assembly or the moulding of mating formation, send into hot press hot pressing, hot pressing temperature is according to the requirement of glued board, shaving board, fiberboard and adhesive solidification temperature, get 110 ℃-200 ℃, the time is 0.15-1.5 minute/every millimeter thickness of slab;
Eight, post-processed detects after the wood-based plate process cooling processing after the hot pressing, damping processing, saw limit, the sanding, compares with the wood-based plate that does not add the cellulose micro-nano-material adhesive, and its bonding strength can improve 10-30%.
Advantage of the present invention: be to utilize the enzyme processing to produce biodegradable cellulose micro-nano-material to join in the adhesive in conjunction with Mechanical Method, thereby improved the bonding strength of adhesive of artificial board, make the performance improvement of wood-based plate, enlarged the application approach of wood-based plate.
The specific embodiment
Embodiment 1,
One, raw material drying, selecting the wood pulp fiber for use is raw material, dries naturally under dispersity, makes its moisture content reach 15%;
Two, pulverize and screening, the wood pulp fiber that dries naturally is pulverized, screen then, make the fibre fineness after the screening reach 40 orders;
Three, enzyme is handled, at first in reaction vessel, add wood pulp fiber after the people screening and the citric acid phosphoric acid disodium hydrogen buffer solution (both weight ratios: 1kg wood pulp fiber adds 20kg citric acid-phosphate sodium dihydrogen buffer solution) of pH4.8, make temperature remain on 50 ℃, add cellulase (add than row: 1 gram wood pulp fiber adds the 20FPU cellulase) in reactor, enzyme processing time is 6 hours;
Four, machining, wood pulp fiber after enzyme is handled dries the back naturally and adopts the mode of high pressure nano homogenizer or ultrasonic cell disruption instrument machining that it is manufactured cellulose micro-nano-material, wherein, the pressure of high pressure nano homogeneous is 1000bar, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5%; The power 450-600W of ultrasonic cell disruption instrument, amplitude 80, broken time are 1.0 hours, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5%;
Five, mix, the cellulose micro-nano-material for preparing added in water miscible phenolic resins or the urea-formaldehyde resin adhesive, the weight ratio of interpolation be 1 part of solid little/fibril of receiving adds 50 parts of hard resins;
Six, applying glue is applied to wood-based plate unit such as veneer or wood shavings or fiberboard surface with the adhesive of artificial board that mixes cellulose micro-nano-material, wherein, the two-sided applying glue liquid glue of veneer amount be 280 the gram/square metre; The percentage by weight of the applying glue solid gum amount of wood shavings or fiberboard is 8%;
Seven, hot pressing, with the wood-based plate unit after the applying glue such as veneer or shaving board or fiberboard, after the assembly or the moulding of mating formation, send into hot press hot pressing, hot pressing temperature is according to the requirement of glued board, shaving board, fiberboard and adhesive solidification temperature, get 150 ℃, the time is 0.15 minute/every millimeter thickness of slab;
Eight, post-processed detects after the wood-based plate process cooling processing after the hot pressing, damping processing, saw limit, the sanding, compares with the wood-based plate that does not add the cellulose micro-nano-material adhesive, and its bonding strength can improve 20%.
Embodiment 2,
One, raw material drying, selecting the wood pulp fiber for use is raw material, dries naturally under dispersity, makes its moisture content reach 18%;
Two, pulverize and screening, the wood pulp fiber that dries naturally is pulverized, screen then, make the fibre fineness after the screening reach 100 orders;
Three, enzyme is handled, at first in reaction vessel, add wood pulp fiber after the people screening and the citric acid phosphoric acid disodium hydrogen buffer solution (both weight ratios: 1kg wood pulp fiber adds 20kg citric acid-phosphate sodium dihydrogen buffer solution) of pH4.8, make temperature remain on 50 ℃, add cellulase (add than row: 1 gram wood pulp fiber adds the 10FPU cellulase) in reactor, enzyme processing time is 8 hours;
Four, machining, the wood pulp fiber after enzyme is handled are dried the back naturally and are adopted the mode of high pressure nano homogenizer or ultrasonic cell disruption instrument machining that it is manufactured cellulose micro-nano-material, its
In, the pressure of high pressure nano homogeneous is 2000bar, prepares the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 1.0%; The power 450-600W of ultrasonic cell disruption instrument, amplitude 100, broken time are 1.5 hours, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 1.5%;
Five, mix, the cellulose micro-nano-material for preparing added in water miscible phenolic resins or the urea-formaldehyde resin adhesive, the weight ratio of interpolation be 1 part of solid little/fibril of receiving adds 100 parts of hard resins;
Six, applying glue is applied to wood-based plate unit such as veneer or wood shavings or fiberboard surface with the adhesive of artificial board that mixes cellulose micro-nano-material, wherein, the two-sided applying glue liquid glue of veneer amount be 320 the gram/square metre; The percentage by weight of the applying glue solid gum amount of wood shavings or fiberboard is 11%;
Seven, hot pressing is with the wood-based plate unit after the applying glue such as veneer or shaving board or fiberboard, after the assembly or the moulding of mating formation, send into hot press hot pressing, hot pressing temperature is got 180 ℃ according to the requirement of glued board, shaving board, fiberboard and adhesive solidification temperature, and the time is 0.5 minute/every millimeter thickness of slab;
Eight, post-processed detects after the wood-based plate process cooling processing after the hot pressing, damping processing, saw limit, the sanding, compares with the wood-based plate that does not add the cellulose micro-nano-material adhesive, and its bonding strength can improve 30%.
Claims (1)
1. make the method for cellulose micro-nano-material enhanced adhesive with enzyme processing and Mechanical Method, it is characterized in that this method comprises following processing step:
One, raw material drying, selecting the wood pulp fiber for use is raw material, dries naturally under dispersity, makes its moisture content reach 15-20%;
Two, pulverize and screening, the wood pulp fiber that dries naturally is pulverized, screen then, make the fibre fineness after the screening reach the 40-180 order;
Three, enzyme is handled, at first in reaction vessel, add wood pulp fiber after the people screening and the citric acid phosphoric acid disodium hydrogen buffer solution of pH4.8, the weight ratio of the citric acid phosphoric acid disodium hydrogen buffer solution of wood pulp fiber and pH4.8: 1kg wood pulp fiber adds 20kg citric acid-phosphate sodium dihydrogen buffer solution), make temperature remain on 50 ℃, add cellulase in reactor, add than row: 1 gram wood pulp fiber adds the 10-20FPU cellulase, and enzyme processing time is 4-8 hour;
Four, machining, wood pulp fiber after enzyme is handled dries the back naturally and adopts the mode of high pressure nano homogenizer or ultrasonic cell disruption instrument machining that it is manufactured cellulose micro-nano-material, wherein, the pressure of high pressure nano homogeneous is 1000-2000bar, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5-1.0%; The power 450-600W of ultrasonic cell disruption instrument, amplitude 80-100, broken time are 0.5-1.5 hour, prepare the cellulose micro-nano-material that is dispersed in the water, the percentage by weight of its concentration is 0.5-1.5%;
Five, mix, the cellulose micro-nano-material for preparing added in water miscible phenolic resins or the urea-formaldehyde resin adhesive, the weight ratio of interpolation be 1 part of solid little/fibril of receiving adds 20～100 parts of hard resins;
Six, applying glue is applied to wood-based plate unit such as veneer or wood shavings or fiberboard surface with the adhesive of artificial board that mixes cellulose micro-nano-material, wherein, the two-sided applying glue liquid glue of veneer amount be 280-380 gram/square metre; The percentage by weight of the applying glue solid gum amount of wood shavings or fiberboard is 8-12%;
Seven, hot pressing, with the wood-based plate unit after the applying glue such as veneer or shaving board or fiberboard, after the assembly or the moulding of mating formation, send into hot press hot pressing, hot pressing temperature is according to the requirement of glued board, shaving board, fiberboard and adhesive solidification temperature, get 110 ℃～200 ℃, the time is 0.15-1.5 minute/every millimeter thickness of slab;
Eight, post-processed detects after the wood-based plate process cooling processing after the hot pressing, damping processing, saw limit, the sanding, compares with the wood-based plate that does not add the cellulose micro-nano-material adhesive, and its bonding strength can improve 10-30%.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174612A (en) * | 2011-01-06 | 2011-09-07 | 浙江农林大学 | Biological and mechanical silk dividing method for producing nanocellulose |
| CN102248564A (en) * | 2011-05-17 | 2011-11-23 | 南京林业大学 | Method for enhancing surface antibacterial and wear-resisting property of Chinese fir by using wood micron/nano fibril |
| CN104294701A (en) * | 2014-09-23 | 2015-01-21 | 北京纳迅科技有限公司 | Phenolic resin solution for paper wet curtain and paper wet curtain |
| CN104674582A (en) * | 2013-12-03 | 2015-06-03 | 金东纸业（江苏）股份有限公司 | Pulp, preparation method of pulp, and paper made of pulp |
| CN105492669A (en) * | 2013-09-11 | 2016-04-13 | 日东纺绩株式会社 | Cellulose nanofibers, method for producing same, aqueous dispersion using cellulose nanofibers, and fiber-reinforced composite material |
| CN107325486A (en) * | 2017-06-27 | 2017-11-07 | 苏州威尔德工贸有限公司 | A kind of nano-material modified multi-functional Lauxite composite and preparation method thereof |
| CN108755241A (en) * | 2018-05-23 | 2018-11-06 | 天津科技大学 | A method of improving bamboo pulp paper for daily use body paper water imbibition |
| CN108972822A (en) * | 2018-09-06 | 2018-12-11 | 南京林业大学 | A kind of manufacturing method of fibre stalk wood shavings wood-based plate |
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| CN101337375A (en) * | 2008-08-06 | 2009-01-07 | 南京林业大学 | Method for increasing the surface density of straw fiberboard with poplar wood cellulose nanomaterials |
| CN100558519C (en) * | 2007-12-18 | 2009-11-11 | 南京林业大学 | Method for making board from straw shavings after compound enzyme treatment |
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| JPS5615339A (en) * | 1979-07-17 | 1981-02-14 | Okura Ind Co Ltd | Manufacture of light-weight panel form with rice husk as main base |
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| CN101337375A (en) * | 2008-08-06 | 2009-01-07 | 南京林业大学 | Method for increasing the surface density of straw fiberboard with poplar wood cellulose nanomaterials |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174612A (en) * | 2011-01-06 | 2011-09-07 | 浙江农林大学 | Biological and mechanical silk dividing method for producing nanocellulose |
| CN102248564A (en) * | 2011-05-17 | 2011-11-23 | 南京林业大学 | Method for enhancing surface antibacterial and wear-resisting property of Chinese fir by using wood micron/nano fibril |
| CN105492669A (en) * | 2013-09-11 | 2016-04-13 | 日东纺绩株式会社 | Cellulose nanofibers, method for producing same, aqueous dispersion using cellulose nanofibers, and fiber-reinforced composite material |
| CN104674582A (en) * | 2013-12-03 | 2015-06-03 | 金东纸业（江苏）股份有限公司 | Pulp, preparation method of pulp, and paper made of pulp |
| CN104674582B (en) * | 2013-12-03 | 2017-10-17 | 金东纸业（江苏）股份有限公司 | Paper pulp and preparation method thereof, using paper made from the paper pulp |
| CN104294701A (en) * | 2014-09-23 | 2015-01-21 | 北京纳迅科技有限公司 | Phenolic resin solution for paper wet curtain and paper wet curtain |
| CN107325486A (en) * | 2017-06-27 | 2017-11-07 | 苏州威尔德工贸有限公司 | A kind of nano-material modified multi-functional Lauxite composite and preparation method thereof |
| CN108755241A (en) * | 2018-05-23 | 2018-11-06 | 天津科技大学 | A method of improving bamboo pulp paper for daily use body paper water imbibition |
| CN108972822A (en) * | 2018-09-06 | 2018-12-11 | 南京林业大学 | A kind of manufacturing method of fibre stalk wood shavings wood-based plate |
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Application publication date: 20100901 |