CN104762059B - A kind of modified soy-bean protein base adhesive and preparation method thereof - Google Patents
A kind of modified soy-bean protein base adhesive and preparation method thereof Download PDFInfo
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- CN104762059B CN104762059B CN201510134908.6A CN201510134908A CN104762059B CN 104762059 B CN104762059 B CN 104762059B CN 201510134908 A CN201510134908 A CN 201510134908A CN 104762059 B CN104762059 B CN 104762059B
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- crosslinking enhancer
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Abstract
The invention discloses a kind of modified soy-bean protein base adhesive and preparation method thereof, it is prepared by 60 70 parts of decentralized medium, 20 35 parts of degreasing legumin powder, 0.5 2 parts of urea, 2 15 parts of crosslinking enhancer, 18 parts of sodium benzoate, preparation process includes making degreasing legumin powder, urea be dispersed in decentralized medium, crosslinking enhancer, sodium benzoate are added, is uniformly mixing to obtain；The advantage of the invention is that：Simple production process, easy to operate, the adhesive of production is free of formaldehyde, and primary raw material derives from renewable material.
Description
Technical field
The present invention relates to a kind of adhesive, specifically a kind of modified soy-bean protein base rubber for being used to prepare glued board is glued
Agent and preparation method thereof, belong to adhesive area.
Background technology
With the sustainable and stable development of the industry such as the raising of living standards of the people and building, decorations, packaging, Chinese people
Plate yield is made to increase rapidly.2013, the m of China's wood-based plate total output 2.72 hundred million3, account for the 50% of Gross World Product.Wherein wood shavings
The m of plate 13,580,0003, increase by 5.3% on a year-on-year basis；The m of fiberboard 59,830,0003, increase by 4.0% on a year-on-year basis；The m of glued board 1.57 hundred million3, increase by a year-on-year basis
10.5%.Wood-based plate total output, glued board yield, furniture yield, wood floors yield rank the first in the world for years.
The adhesive generally used in Wood-based Panel Production is formaldehyde system synthetic resin, mainly Lauxite and its modified production
Product.By effort for many years, China's adhesive of artificial board level of production has large increase, wood-based plate and its product environmental protection characteristic
It is greatly improved, but its product Form aldehyde release can not be completely eliminated, and the wood-based plate and its product of many enterprise's productions
（Furniture, timber floor, Indoor Wooden ornament materials etc.）More serious Form aldehyde release problem is remained, is room air dirt
The main source of formaldehyde pollution in dye.
At present, reducing the method for artificial board formaldehyde burst size mainly has following 4 kinds：1）Using low mole prop0rtion modified urea-formaldehyde tree
Fat adhesive；2）Formaldehyde catching agent is added in modified urea-formaldehyde resin adhesive；3）Wood-based plate is post-processed；4）Using it
His environmental-protection type adhesive.But all there is many defects for these technical methods.Such as：1）Using low mole prop0rtion modified urea-formaldehyde
Although resin adhesive can effectively reduce wood-based panel product burst size of methanal, product bonding strength also tends to reduce, no
Requirement can be met；And hardening time can be caused to extend, production efficiency reduces；2）In urea-formaldehyde resin for artificial board adhesive
Middle addition formaldehyde catching agent, although free formaldehyde in artificial plate burst size can be reduced effectively, often reduce wood-based plate simultaneously
Bonding strength；Meanwhile general formaldehyde catching agent price often be significantly larger than urea-formaldehyde resin adhesive, its add improve product into
This, reduces product competitiveness；3）Wood-based plate is post-processed, as Publication No. CN1526528 application for a patent for invention in
Disclose a kind of manufacturing process that E1/EO level environment friendly artificial boards are prepared using ammonia vacuum method；Publication No. CN2394770's
A kind of processing unit for reducing artificial board formaldehyde burst size is disclosed in utility model patent, these post-processing approach, is not only made
It is complicated to obtain wood-based plate manufacturing process, and equipment for after-treatment investment is huge, and production cost significantly improves；4）Using other environment-friendly types
Adhesive, such as isocyanates adhesive, Wood-based Panel Production cost is caused to increase considerably, producting process difficulty increases, enterprise
All it is difficult to receive with user；Prepare that wood-based plate bonding strength is low, and wood-based plate easily comes unglued using general proteins adhesive.To sum up institute
State, although above-mentioned measure can effectively reduce free formaldehyde in artificial plate burst size, can not thoroughly solve the problems, such as Form aldehyde release, or
It can not be promoted due to excessively high etc. reason of production cost.
In addition, the adhesive of artificial board generally used at present is not inconsistent all there is the fossil resource Dependence Problem of raw material yet
Close the requirement of sustainable development.
The content of the invention
In order to solve the above problems, the present invention devises a kind of modified soy-bean protein base adhesive and preparation method thereof, raw
Production. art is simple, easy to operate, and the adhesive of production is free of formaldehyde, and primary raw material derives from renewable material, is a kind of environmental protection
Type adhesion agent for artificial board.
The technical scheme is that：
A kind of modified soy-bean protein base adhesive, is prepared by the raw material of following parts by weight：
Decentralized medium 60-70 parts, degreasing legumin powder 20-35 parts, urea 0.5-2 parts, crosslinking enhancer 2-15 parts, benzene first
Sour sodium 1-8 parts；Wherein, the crosslinking enhancer is melamine-epoxychloropropane-sodium hydroxide reactant.
Preferably, decentralized medium 62-68 parts, degreasing legumin powder 25-30 parts, urea 1-2 parts, crosslinking enhancer 5-12
Part, sodium benzoate 2-4 parts.
Further, the decentralized medium selection softened water.
A kind of preparation method of above-mentioned modified soy-bean protein base adhesive, comprises the following steps：
1）Each raw material is weighed according to above-mentioned weight proportion, degreasing legumin powder, urea is dispersed in decentralized medium；
2）Crosslinking enhancer, sodium benzoate are added, is stirred.
Wherein, the increased response agent is melamine-epoxychloropropane-sodium hydroxide reactant, and preparation method is：Will
1mol melamines are placed in constant temperature in four-hole boiling flask with 10mol water and, to 60 DEG C, add boron trifluoride 1% and 0.05mol hydroxide
Sodium is molten, and the epoxychloropropane monomer that 4mol is slowly dropped into after well mixed reacts 5 hours at 70-90 DEG C, after be cooled to 50 DEG C, add
Enter 0.15mol sodium hydroxides, stir 20 minutes, neutralize unnecessary alkali, be evaporated under reduced pressure free epoxychloropropane, it is smart in ethanol
System drying obtains the increased response agent of the present invention.
The advantage of the invention is that：
1）The present invention is used as adhesion agent for artificial board after handling legumin, does not contain free formaldehyde, the people of splicing
Make plate and Form aldehyde release problem is not present, thoroughly solve the problems, such as the formaldehyde pollution in the room air that wood-based plate is brought；
2）Legumin, as the primary raw material of adhesive, helps solve conventional artificial as a kind of reproducible resource
Using the exhausted problem of synthesis fossil feedstock in board adhesive, meet environmental protection and continuable development principle；
3）The soybean glue stick of the present invention is process using degreasing legumin powder, effectively make use of soybean processing
Residue, resource is comprehensively utilized, save production cost, improve added value of product；
4）It is crosslinking enhancer that the present invention, which adopts melamine-epoxychloropropane-sodium hydroxide reactant, solves common beans
The problem of protein adhesive poor water resistance, the water-fast requirement of adhesion agent for artificial board is disclosure satisfy that, ensure that soybean glue stick
Practical performance, and by the present invention adhesive prepare glued board reach II classes glued board requirement in national standard.
With reference to specific embodiment, the invention will be further described.
Embodiment
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Unless otherwise indicated, the percentage employed in the present invention is percetage by weight.
Embodiment 1
A kind of modified soy-bean protein base adhesive and preparation method thereof
1）Stocked up by following weight proportion：
Softened water 68kg
The kg of urea 1
Degreasing legumin powder 26kg
The kg of reinforcing agent 6
Sodium benzoate 2kg
2）In the reactor equipped with agitator, thermometer and condensing unit, add whole softened waters, legumin powder,
Urea, stir；
3）Heating water bath is to 40-45 DEG C, insulation reaction 3 hours；
4）Reactant is cooled to 30 DEG C, and uniform legumin mucus is made；
5）Reinforcing agent is added in the legumin mucus of gained, be well mixed, add sodium benzoate afterwards, soybean glue is made
Stick.
Wherein, the performance quality index of adhesive is shown in Table 1.
Embodiment 2
A kind of modified soy-bean protein base adhesive and preparation method thereof
1）Stocked up by following weight proportion：
The kg of softened water 64
The kg of urea 1.5
The kg of degreasing legumin powder 29
Reinforcing agent 8kg
Sodium benzoate 4kg
2）In the reactor equipped with agitator, thermometer and condensing unit, add whole softened waters, legumin powder,
Urea, stir；
3）Heating water bath reacts 6 hours to 40-45 DEG C；
4）Reactant is cooled to 30 DEG C, and uniform legumin mucus is made.
5）Reinforcing agent is added in the legumin mucus of gained, be well mixed, add sodium benzoate afterwards, soybean glue is made
Stick.
Wherein, the quality index of soybean glue stick is shown in Table 1.
Embodiment 3
A kind of modified soy-bean protein base adhesive and preparation method thereof
1）Stocked up by following weight proportion：
The kg of softened water 62
The kg of urea 2
The kg of degreasing legumin powder 29
Reinforcing agent 10kg
Sodium benzoate 3kg
2）In the reactor equipped with agitator, thermometer and condensing unit, whole softened waters, legumin powder are added,
Stir；
3）Heating water bath reacts 5 hours to 65-70 DEG C；
4）Reactant is cooled to 30 DEG C, and uniform legumin mucus is made；
5）Reinforcing agent is added in the legumin mucus of gained, be well mixed, add sodium benzoate afterwards, soybean glue is made
Stick.
Wherein, the performance quality index of adhesive is shown in Table 1.
Embodiment 4
A kind of modified soy-bean protein base adhesive and preparation method thereof
1）Stocked up by following weight proportion：
The kg of softened water 62
The kg of urea 2
The kg of degreasing legumin powder 28
Reinforcing agent 12kg
Sodium benzoate 3kg
2）In the reactor equipped with agitator, thermometer and condensing unit, whole softened waters, legumin powder are added,
Stir；
3）Heating water bath reacts 5 hours to 70-75 DEG C；
4）Reactant is cooled to 30 DEG C, and uniform legumin mucus is made；
5）Reinforcing agent is added in the legumin mucus of gained, be well mixed, add sodium benzoate afterwards, soybean glue is made
Stick.
Wherein, the quality index of soybean glue stick is shown in Table 1.
The performance indications of the soybean glue stick of table 1
Experimental example
1-4 of the embodiment of the present invention and reference examples are respectively adopted（Using the legumin mucus in embodiment 1-4 as gluing
Agent, as reference examples 1-4）Three layers of 400 × 400mm glued boards of product manufacturing.
Board using poplar board：Moisture content is dried to 10-14%；Thick 1.5mm；
Veneer adhesive is using 1-4 of embodiment of the present invention product and reference examples 1-4 product.
Glued board is prepared by following normal process：
Applying glue：The two-sided applying glue of core plate, glue-spread 310-330g/m2；
Aging and time：Closure ageing, 20-30 minutes；
Preload pressure and time：Precompressed 40 minutes, pressure 0.9MPa；
Hot pressing pressure：1.0MPa, hot pressing temperature are 110-120 DEG C, hot pressing time 90s/mm.
By GB/T17657-1999《Wood-based plate and face artificial board physicochemical property experimental method》Detection method is to production
Plywood product carries out performance detection, and testing result is shown in Table 2.
Table 2 is glued the burst size of methanal and bonding strength of glued board
Structural analysis：By above-mentioned test result indicates that, the glued board of the formaldehydeless soybean glue stick manufacture of the present invention
Burst size of methanal is all very low（For timber body Form aldehyde release）, the bonding strength of glued board reaches in national standard in more than 1.05MPa
II class glued board standards（Poplar >=0.70MPa）.
Cost analysis：
The formaldehydeless soybean glue stick of the present invention is easy to use, it is not necessary to which existing Wood-based Panel Production equipment and technique are done and changed
It is dynamic, therefore equipment investment need not be increased.
At present, the price of the environment-friendly type cyanurotriamide modified urea resin adhesive of 50% solids content is in 2000-4000
Yuan/ton, the price of synvaren is at 5000-6000 yuan/ton, soybean glue stick of the present invention（35% solids content）'s
Cost is about 3000 yuan/ton, well below synvaren, is approached with modified urea-formaldehyde resin adhesive.
The alternative custom plywood adhesive containing formaldehyde of adhesive prepared by the present invention, prepares total applying glue during glued board
Measure constant, therefore use cost is suitable with urea-formaldehyde resin adhesive, well below synvaren use cost.Therefore,
The soybean glue stick of the present invention has a good application prospect.
In addition, raw materials used in the present invention is to commonly use raw material in the production of this area, can be obtained from market, and for
Production result will not have an impact；Various equipment employed in the present invention, it is the routine used in the production technology of this area
Equipment, and the operation of each equipment, parameter etc. are carried out according to routine operation, have no special feature.
Claims (2)
1. a kind of modified soy-bean protein base adhesive, it is characterised in that be prepared by the raw material of following parts by weight：
Decentralized medium 60-70 parts, degreasing legumin powder 20-35 parts, urea 0.5-2 parts, crosslinking enhancer 2-15 parts, sodium benzoate
1-8 parts；Wherein, the decentralized medium selection softened water；
The crosslinking enhancer is melamine-epoxychloropropane-sodium hydroxide reactant, and preparation method is：By 1mol trimerizations
Cyanamide and 10mol water are placed in four-hole boiling flask constant temperature to 60 DEG C, and it is molten to add the sodium hydroxide of boron trifluoride 1% and 0.05mol, mixes
4mol epoxychloropropane monomer is slowly dropped into after closing uniformly to react 5 hours at 70-90 DEG C, after be cooled to 50 DEG C, add
0.15mol sodium hydroxides, stir 20 minutes, neutralize unnecessary alkali, be evaporated under reduced pressure free epoxychloropropane, refine in ethanol
Drying obtains a kind of crosslinking enhancer of modified soy-bean protein base adhesive.
A kind of a kind of 2. preparation method of modified soy-bean protein base adhesive as claimed in claim 1, it is characterised in that including
Following steps：
1）Each raw material is weighed according to above-mentioned weight proportion, degreasing legumin powder, urea is dispersed in decentralized medium；
2）Crosslinking enhancer, sodium benzoate are added, is stirred；
The crosslinking enhancer is melamine-epoxychloropropane-sodium hydroxide reactant；The decentralized medium selection softening
Water；
The crosslinking enhancer is melamine-epoxychloropropane-sodium hydroxide reactant, and preparation method is：By 1mol trimerizations
Cyanamide and 10mol water are placed in four-hole boiling flask constant temperature to 60 DEG C, and it is molten to add the sodium hydroxide of boron trifluoride 1% and 0.05mol, mixes
4mol epoxychloropropane monomer is slowly dropped into after closing uniformly to react 5 hours at 70-90 DEG C, after be cooled to 50 DEG C, add
0.15mol sodium hydroxides, stir 20 minutes, neutralize unnecessary alkali, be evaporated under reduced pressure free epoxychloropropane, refine in ethanol
Drying obtains a kind of crosslinking enhancer of modified soy-bean protein base adhesive.
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| CN201510134908.6A CN104762059B (en) | 2015-03-26 | 2015-03-26 | A kind of modified soy-bean protein base adhesive and preparation method thereof |
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| CN105860922A (en) * | 2016-05-09 | 2016-08-17 | 北京林业大学 | Bean pulp-base artificial board adhesive and preparation method thereof |
| CN106753223B (en) * | 2016-12-30 | 2019-03-12 | 湖南省林业科学院 | A kind of modified soybean base timber adhesive and preparation method thereof |
| CN108372570A (en) * | 2018-03-28 | 2018-08-07 | 许水仙 | A kind of preparation method of the moisture-proof wheat straw board of fire resisting |
| CN111268517A (en) * | 2020-04-10 | 2020-06-12 | 山东德派克纸业有限公司平原分公司 | Production method of paper tube for textile production by using soybean protein glue as adhesive |
| CN113480970B (en) * | 2021-07-19 | 2022-04-08 | 华南农业大学 | Full-bio-based bi-component soybean adhesive, preparation method and application thereof |
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| CN101875835A (en) * | 2009-11-27 | 2010-11-03 | 青岛生物能源与过程研究所 | Preparation method for formaldehyde-free protein adhesive |
| CN103709989A (en) * | 2013-12-02 | 2014-04-09 | 张成栋 | Protein adhesive, preparation method and application thereof |
| CN104178082A (en) * | 2014-08-21 | 2014-12-03 | 北京林业大学 | Soybean meal-based adhesive for wood and preparation method thereof |
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Effective date of registration: 20210525 Address after: 430040 No.8, xite, Dongwu Avenue, Dongxihu District, Wuhan City, Hubei Province Patentee after: HUBEI FUHAN WOOD INDUSTRY Co.,Ltd. Address before: 100083 No. 35 Qinghua East Road, Beijing, Haidian District Patentee before: BEIJING FORESTRY University |
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