CN101696347A - Microbe transglutaminase modified soya flour-based wood adhesive and preparation method thereof - Google Patents
Microbe transglutaminase modified soya flour-based wood adhesive and preparation method thereof Download PDFInfo
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- CN101696347A CN101696347A CN200910309438A CN200910309438A CN101696347A CN 101696347 A CN101696347 A CN 101696347A CN 200910309438 A CN200910309438 A CN 200910309438A CN 200910309438 A CN200910309438 A CN 200910309438A CN 101696347 A CN101696347 A CN 101696347A
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Abstract
The invention discloses a microbe transglutaminase modified soya flour-based wood adhesive and a preparation method thereof, and relates to a wood adhesive and a preparation method thereof. The microbe transglutaminase modified soya flour-based wood adhesive solves the problems that the conventional formaldehyde-type adhesives constantly release formaldehyde, a mode of copolymerizing or blending a soy-based adhesive and synthetic resin improves the water resistance but causes existing volatile toxic substances, consumes a great deal of energy and pollutes environment, and isolated soy protein is adopted as a raw material to modify the soy-based adhesive to cause high cost. The adhesive of the invention is prepared from water, defatted soya flour and microbe transglutaminase. The preparation method comprises the following steps: 1, weighing raw materials; 2, after temperature rise of the water, adding the defatted soya flour, and stirring to prepare slurry; and 3, adjusting pH value of the slurry, adding the microbe transglutaminase, performing stirring reaction, adjusting pH value, stirring again, discharging, and cooling to room temperature. The adhesive has low formaldehyde release, low cost, low energy consumption and no environmental pollution in the using process.
Description
Technical field
The present invention relates to wood adhesive and preparation method thereof.
Background technology
China's adhesion agent for wood industry is still mainly based on " three-aldehyde glue " (urea-formaldehyde resin, resol and terpolycyantoamino-formaldehyde resin) at present, occupied more than 80% of adhesion agent for artificial board total amount, the wood-based plate that this type of sizing agent is produced can continuous release formaldehyde in production, transportation and use, grievous injury human beings'health (according to No. 153 communique that on June 15th, 2004, the World Health Organization delivered: confirm that through international cancer research institution formaldehyde can cause human cancer).The soya-based sizing agent more and more comes into one's own at present owing to have the advantage of wide, the nontoxic and degradability of raw material sources; Yet the water resistance of soya-based sizing agent is relatively poor, and the many employings of people improve its water resistance with the mode of synthetic resins copolymerization or blend, can cause it to have volatile toxic substance, and consume a large amount of energy, contaminate environment; Have that to adopt soybean protein isolate be raw material to the in addition modification of soya-based sizing agent, but cost is higher.
Summary of the invention
The present invention seeks to the continuous release formaldehyde of existing in order to solve " three-aldehyde glue " sizing agent, mode with soya-based sizing agent and synthetic resins copolymerization or blend improves its water resistance, can cause it to have the volatilization toxic substance, and consume a large amount of energy, contaminate environment, and to adopt soybean protein isolate be raw material to the in addition modification of soya-based sizing agent, the cost problem of higher, and bean powder base timber adhesive of a kind of microbial transglutaminase modification and preparation method thereof is provided.
The bean powder base timber adhesive of microbial transglutaminase modification is made by 400～500 parts water, 80～120 parts low-temperature defatted soyflour and 1.0～1.4 parts microbial transglutaminase by mass fraction; Wherein the particle diameter of low-temperature defatted soyflour is less than 120 orders; The microbial transglutaminase activity is 100U/g.
The preparation method of the bean powder base timber adhesive of microbial transglutaminase modification carries out according to the following steps: one, take by weighing 400～500 parts water, 80～120 parts low-temperature defatted soyflour, 1.0～1.4 parts microbial transglutaminase by mass fraction; Two, in reactor, add the water take by weighing and be warming up to 40～60 ℃, add the low-temperature defatted soyflour that takes by weighing then, stir slurries; Three, regulate slurry pH value to 9.5～10.0, be to regulate pH value to 7.5～8.0 after reacting 20～40min under 40～60 ℃ the condition in temperature, add the microbial transglutaminase that takes by weighing again, stir and react re-adjustment pH value to 9.5～10.0 behind 1～1.5h with the speed of 700～800r/min, then stir 5～15min, discharging is cooled to room temperature, promptly gets the bean powder base timber adhesive of microbial transglutaminase modification; Wherein low-temperature defatted soyflour is crossed 120 mesh sieves in the step 1; The microbial transglutaminase activity is 100U/g in the step 1.
The bean powder base timber adhesive of microbial transglutaminase modification among the present invention, be prepared into glued board, its water proof bonding strength detects with reference to II class glued board testing method among GB/T9846.1～9846.8-2004 " glued board ", tensile shear strength is 0.54～0.68MPa, and the tensile shear strength of traditional alkaline process modified soybean base adhesive only is 0.05～0.3MPa; The bean powder base timber adhesive of microbial transglutaminase modification among the present invention, burst size of methanal only is 0.03～0.04mg/L in the use, and is harmless, belong to environmental-protection type adhesive, product is safe in utilization, and production technique is simple, utilize defatted soyflour as the glue raw material, with low cost, cut down the consumption of energy, free from environmental pollution, and opened up the new way that bean powder utilizes, improve added value, increase farmers' income, help promoting the development of agriculture, rural areas and farmers.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the bean powder base timber adhesive of present embodiment microbial transglutaminase modification is made by 400～500 parts water, 80～120 parts low-temperature defatted soyflour and 1.0～1.4 parts microbial transglutaminase by mass fraction; Wherein the particle diameter of low-temperature defatted soyflour is less than 120 orders; The microbial transglutaminase activity is 100U/g.
The protein content of low-temperature defatted soyflour is 52.0%～54.0% in the present embodiment.
Embodiment two: present embodiment and embodiment one are different is that the bean powder base timber adhesive of microbial transglutaminase modification is made by 420～480 parts water, 90～110 parts low-temperature defatted soyflour and 1.1～1.3 parts microbial transglutaminase by mass fraction.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one are different is that the bean powder base timber adhesive of microbial transglutaminase modification is made by 460 parts water, 100 parts low-temperature defatted soyflour and 1.2 parts microbial transglutaminase by mass fraction.Other is identical with embodiment one.
Embodiment four: present embodiment and embodiment one are different is that the bean powder base timber adhesive of microbial transglutaminase modification is made by 450 parts water, 100 parts low-temperature defatted soyflour and 1.2 parts microbial transglutaminase by mass fraction.Other is identical with embodiment one.
Embodiment five: the preparation method of the bean powder base timber adhesive of present embodiment microbial transglutaminase modification carries out according to the following steps: one, take by weighing 400～500 parts water, 80～120 parts low-temperature defatted soyflour, 1.0～1.4 parts microbial transglutaminase by mass fraction; Two, in reactor, add the water take by weighing and be warming up to 40～60 ℃, add the low-temperature defatted soyflour that takes by weighing then, stir slurries; Three, regulate slurry pH value to 9.5～10.0, be to regulate pH value to 7.5～8.0 after reacting 20～40min under 40～60 ℃ the condition in temperature, add the microbial transglutaminase that takes by weighing again, stir and react re-adjustment pH value to 9.5～10.0 behind 1～1.5h with the speed of 700～800r/min, then stir 5～15min, discharging is cooled to room temperature, promptly gets the bean powder base timber adhesive of microbial transglutaminase modification; Wherein low-temperature defatted soyflour is crossed 120 mesh sieves in the step 1; The microbial transglutaminase activity is 100U/g in the step 1.
The protein content of low-temperature defatted soyflour is 52.0%～54.0% in the present embodiment step 1.
The solids content of the bean powder base timber adhesive of gained microbial transglutaminase modification is 18.0%～18.5% in the present embodiment.
The bean powder base timber adhesive of gained microbial transglutaminase modification in the present embodiment, be prepared into glued board, its water proof bonding strength detects with reference to plywood character testing method among GB/T 9846.1～9846.8-2004 " glued board ", reaches 0.54～0.68MPa.
Employed microbial transglutaminase (MTGase) can impel L-glutamic acid in the protein (Glu) and Methionin (Lys), primary amine (RNH in the present embodiment step 1
2) between crosslinked, by sloughing a part ammonia, form covalent bonds, thereby tackiness agent force of cohesion increases the water-fast glue performance that improves the modification sizing agent.Reaction equation is as follows:
Embodiment six: what present embodiment and embodiment five were different is to take by weighing 420～480 parts water, 90～110 parts low-temperature defatted soyflour, 1.1～1.3 parts microbial transglutaminase by mass fraction in the step 1.Other step and parameter are identical with embodiment five.
Embodiment seven: what present embodiment and embodiment five were different is to take by weighing 460 parts water, 100 parts low-temperature defatted soyflour, 1.2 parts microbial transglutaminase by mass fraction in the step 1.Other step and parameter are identical with embodiment five.
Embodiment eight: what present embodiment and embodiment five were different is to take by weighing 450 parts water, 100 parts low-temperature defatted soyflour, 1.2 parts microbial transglutaminase by mass fraction in the step 1.Other step and parameter are identical with embodiment five.
Embodiment nine: what present embodiment and embodiment five, six, seven or eight were different is to be warming up to 45～55 ℃ in the step 2.Other step and parameter are identical with embodiment five, six, seven or eight.
Embodiment ten: what present embodiment and embodiment five, six, seven or eight were different is to be warming up to 50 ℃ in the step 2.Other step and parameter are identical with embodiment five, six, seven or eight.
Embodiment 11: what present embodiment was different with embodiment nine or ten is to regulate slurry pH value to 9.6～9.8 in the step 3.Other step and parameter are identical with embodiment nine or ten.
Embodiment 12: what present embodiment was different with embodiment nine or ten is to regulate slurry pH value to 9.7 in the step 3.Other step and parameter are identical with embodiment nine or ten.
Embodiment 13: present embodiment and embodiment five, six, seven, eight, 11 or 12 are different is to regulate pH value to 7.6～7.9 after reacting 25～35min in the step 3 under temperature is 45～55 ℃ condition.Other step and parameter are identical with embodiment five, six, seven, 81 or 12.
Embodiment 14: present embodiment and embodiment five, six, seven, eight, 11 or 12 are different is to be to regulate pH value to 7.8 behind the reaction 30min under 50 ℃ the condition in temperature in the step 3.Other step and parameter are identical with embodiment five, six, seven, 81 or 12.
Embodiment 15: present embodiment is different with embodiment 13 or 14 is to stir with the speed of 720～780r/min in the step 3 and react re-adjustment pH value to 9.6～9.8 behind 1.1～1.4h.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 16: present embodiment is different with embodiment 13 or 14 be stir with the speed of 750r/min in the step 3 and reaction 1.2h after re-adjustment pH value to 9.7.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 17: what present embodiment and embodiment five, six, seven, eight, 11,12,15 or 16 were different is that churning time is 8～12min in the step 3.Other step and parameter are identical with embodiment five, six, seven, eight, 11,12,15 or 16.
Embodiment 18: what present embodiment and embodiment five, six, seven, eight, 11,12,15 or 16 were different is that churning time is 10min in the step 3.Other step and parameter are identical with embodiment five, six, seven, eight, 11,12,15 or 16.
Embodiment 19: the preparation method of the bean powder base timber adhesive of present embodiment microbial transglutaminase modification carries out according to the following steps: one, take by weighing 460 parts water, 100 parts low-temperature defatted soyflour, 1.2 parts microbial transglutaminase by mass fraction; Two, in reactor, add the water take by weighing and be warming up to 50 ℃, add the low-temperature defatted soyflour that takes by weighing then, stir slurries; Three, regulate slurry pH value to 9.6, be to regulate pH value to 7.8 behind the reaction 30min under 50 ℃ the condition in temperature, add the microbial transglutaminase that takes by weighing again, with the speed of 750r/min stir and reaction 1h after re-adjustment pH value to 9.8, then stir 10min, discharging is cooled to room temperature, promptly gets the bean powder base timber adhesive of microbial transglutaminase modification; Wherein low-temperature defatted soyflour is crossed 120 mesh sieves in the step 1; The microbial transglutaminase activity is 100U/g in the step 1.
The bean powder base timber adhesive of gained microbial transglutaminase modification in the present embodiment, require preparation gummed test specimen according to GB/T9846.1～9846.8-2004 " glued board ", the detection method of II class glued board is: test specimen is placed in the hot water under 60 ℃ floods 3h, at room temperature cool off 10min after the taking-up, carry out the test of water proof bonding strength again, its tensile shear strength is 0.54MPa, bond strength is 0.54MPa, and the tensile shear strength of traditional alkaline process modified soybean base adhesive only is 0.05～0.3Mpa, and bond strength is 0.05～0.3MPa; Typical case's preparation of tradition alkali modification soya-based sizing agent: 300 parts water (30 ℃) are put into Glue mixer, stir the bean powder that adds 100 parts down, stir 15min (requiring material to be fine and smooth even, no block) then, add 20 parts milk of lime (calcium oxide mixes by weight 1: 4 with water), 20 parts sodium hydroxide (30wt%), 40 parts water glass (40 degree Beaume), discharging behind stirring 5～15min successively every 1min then.
The bean powder base timber adhesive of gained microbial transglutaminase modification in the present embodiment, require preparation gummed test specimen according to GB/T9846.1～9846.8-2004 " glued board ", detect with reference to the burst size of methanal of moisture eliminator method among the GB18580-2001 " formaldehyde discharges and limits the quantity of in indoor decorating material wood-based plate and the goods thereof " then the gummed test specimen, and and E
0The burst size of level gummed test specimen is compared, and uses the gummed test specimen of gained tackiness agent preparation in the present embodiment, and its burst size of methanal only is 0.04mg/L, and existing E
0The burst size of methanal of level gummed test specimen is 0.5mg/L, and the gummed test specimen of gained tackiness agent preparation has more the feature of environmental protection in the visible present embodiment.
Embodiment 20: the preparation method of the bean powder base timber adhesive of present embodiment microbial transglutaminase modification carries out according to the following steps: one, take by weighing 450 parts water, 100 parts low-temperature defatted soyflour, 1.2 parts microbial transglutaminase by mass fraction; Two, in reactor, add the water take by weighing and be warming up to 45 ℃, add the low-temperature defatted soyflour that takes by weighing then, stir slurries; Three, regulate slurry pH value to 10.0, be to regulate pH value to 7.5 behind the reaction 50min under 48 ℃ the condition in temperature, add the microbial transglutaminase that takes by weighing again, with the speed of 800r/min stir and reaction 1.5h after re-adjustment pH value to 9.8, then stir 15min, discharging is cooled to room temperature, promptly gets the bean powder base timber adhesive of microbial transglutaminase modification; Wherein low-temperature defatted soyflour is crossed 120 mesh sieves in the step 1; The microbial transglutaminase activity is 100U/g in the step 1.
The bean powder base timber adhesive of gained microbial transglutaminase modification in the present embodiment, require preparation gummed test specimen according to GB/T9846.1～9846.8-2004 " glued board ", the detection method of II class glued board is: test specimen is placed in the hot water under 60 ℃ floods 3h, at room temperature cool off 10min after the taking-up, carry out the test of water proof bonding strength again, its tensile shear strength is 0.68MPa, bond strength is 0.68MPa, and the tensile shear strength of traditional alkaline process modified soybean base adhesive only is 0.05～0.3Mpa, and bond strength is 0.05～0.3MPa; Typical case's preparation of tradition alkali modification soya-based sizing agent: 300 parts water (30 ℃) are put into Glue mixer, stir the bean powder that adds 100 parts down, stir 15min (requiring material to be fine and smooth even, no block) then, add 20 parts milk of lime (calcium oxide mixes by weight 1: 4 with water), 20 parts sodium hydroxide (30wt%), 40 parts water glass (40 degree Beaume), discharging behind stirring 5～15min successively every 1min then.
The bean powder base timber adhesive of gained microbial transglutaminase modification in the present embodiment, require preparation gummed test specimen according to GB/T9846.1～9846.8-2004 " glued board ", detect with reference to the burst size of methanal of moisture eliminator method among the GB18580-2001 " formaldehyde discharges and limits the quantity of in indoor decorating material wood-based plate and the goods thereof " then the gummed test specimen, and and E
0The burst size of level gummed test specimen is compared, and uses the gummed test specimen of gained tackiness agent preparation in the present embodiment, and its burst size of methanal only is 0.03mg/L, and existing E
0The burst size of methanal of level gummed test specimen is 0.5mg/L, and the gummed test specimen of gained tackiness agent preparation has more the feature of environmental protection in the visible present embodiment.
Claims (9)
1. the bean powder base timber adhesive of a microbial transglutaminase modification is characterized in that the bean powder base timber adhesive of microbial transglutaminase modification is made by 400～500 parts water, 80～120 parts low-temperature defatted soyflour and 1.0～1.4 parts microbial transglutaminase by mass fraction; Wherein the particle diameter of low-temperature defatted soyflour is less than 120 orders; The microbial transglutaminase activity is 100U/g.
2. the bean powder base timber adhesive of microbial transglutaminase modification according to claim 1 is characterized in that the bean powder base timber adhesive of microbial transglutaminase modification is made by 420～480 parts water, 90～110 parts low-temperature defatted soyflour and 1.1～1.3 parts microbial transglutaminase by mass fraction.
3. the bean powder base timber adhesive of microbial transglutaminase modification according to claim 1 is characterized in that the bean powder base timber adhesive of microbial transglutaminase modification is made by 460 parts water, 100 parts low-temperature defatted soyflour and 1.2 parts microbial transglutaminase by mass fraction.
4. the method for preparing the bean powder base timber adhesive of microbial transglutaminase modification according to claim 1 is characterized in that the preparation method of the bean powder base timber adhesive of microbial transglutaminase modification carries out according to the following steps: one, take by weighing 400～500 parts water, 80～120 parts low-temperature defatted soyflour, 1.0～1.4 parts microbial transglutaminase by mass fraction; Two, in reactor, add the water take by weighing and be warming up to 40～60 ℃, add the low-temperature defatted soyflour that takes by weighing then, stir slurries; Three, regulate slurry pH value to 9.5～10.0, be to regulate pH value to 7.5～8.0 after reacting 20～40min under 40～60 ℃ the condition in temperature, add the microbial transglutaminase that takes by weighing again, stir and react re-adjustment pH value to 9.5～10.0 behind 1～1.5h with the speed of 700～800r/min, then stir 5～15min, discharging is cooled to room temperature, promptly gets the bean powder base timber adhesive of microbial transglutaminase modification; Wherein low-temperature defatted soyflour is crossed 120 mesh sieves in the step 1; The microbial transglutaminase activity is 100U/g in the step 1.
5. the preparation method of the bean powder base timber adhesive of microbial transglutaminase modification according to claim 4 is characterized in that taking by weighing 420～480 parts water, 90～110 parts low-temperature defatted soyflour, 1.1～1.3 parts microbial transglutaminase by mass fraction in the step 1.
6. according to the preparation method of the bean powder base timber adhesive of claim 4 or 5 described microbial transglutaminase modifications, it is characterized in that being warming up in the step 2 45～55 ℃.
7. the preparation method of the bean powder base timber adhesive of microbial transglutaminase modification according to claim 6 is characterized in that regulating in the step 3 slurry pH value to 9.6～9.8.
8. according to the preparation method of the bean powder base timber adhesive of claim 4,5 or 7 described microbial transglutaminase modifications, regulate pH value to 7.6～7.9 after it is characterized in that in the step 3 under temperature is 45～55 ℃ condition, reacting 25～35min.
9. the preparation method of the bean powder base timber adhesive of microbial transglutaminase modification according to claim 8 is characterized in that in the step 3 that speed with 720～780r/min stirs and reacts re-adjustment pH value to 9.6～9.8 behind 1.1～1.4h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128830A (en) * | 2013-03-11 | 2013-06-05 | 浙江省林业科学研究院 | Production method of formaldehyde-free reconstituted bamboo flooring |
| CN108058248A (en) * | 2017-12-18 | 2018-05-22 | 北京光纪国际生物科技服务有限公司 | The method of ultra micro activation eucalyptus barks production wood-based plate biomass filler |
| CN113004858A (en) * | 2021-03-10 | 2021-06-22 | 浙江金仕文化用品有限公司 | Modified paper-plastic composite adhesive and preparation method thereof |
-
2009
- 2009-11-09 CN CN200910309438A patent/CN101696347A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128830A (en) * | 2013-03-11 | 2013-06-05 | 浙江省林业科学研究院 | Production method of formaldehyde-free reconstituted bamboo flooring |
| CN103128830B (en) * | 2013-03-11 | 2015-05-27 | 浙江省林业科学研究院 | Production method of formaldehyde-free reconstituted bamboo flooring |
| CN108058248A (en) * | 2017-12-18 | 2018-05-22 | 北京光纪国际生物科技服务有限公司 | The method of ultra micro activation eucalyptus barks production wood-based plate biomass filler |
| CN108058248B (en) * | 2017-12-18 | 2019-11-08 | 北京光纪国际生物科技服务有限公司 | The method that ultra micro activates eucalyptus barks production wood-based plate biomass filler |
| CN113004858A (en) * | 2021-03-10 | 2021-06-22 | 浙江金仕文化用品有限公司 | Modified paper-plastic composite adhesive and preparation method thereof |
| CN113004858B (en) * | 2021-03-10 | 2022-06-10 | 浙江金仕文化用品有限公司 | Modified paper-plastic composite adhesive and preparation method thereof |
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Open date: 20100421 |