CN101191045A - Adhesive for artificial plate and preparation method thereof - Google Patents
Adhesive for artificial plate and preparation method thereof Download PDFInfo
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- CN101191045A CN101191045A CNA2007101792154A CN200710179215A CN101191045A CN 101191045 A CN101191045 A CN 101191045A CN A2007101792154 A CNA2007101792154 A CN A2007101792154A CN 200710179215 A CN200710179215 A CN 200710179215A CN 101191045 A CN101191045 A CN 101191045A
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- complexing agent
- artificial board
- soybean protein
- agent
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Abstract
The invention discloses an adhesive used for an artificial board and a preparation method thereof. The adhesive comprises the raw materials by weight portion: 70 to 80 portions of demineralized water, 0.5 to 3 portions of sodium carbonate, 20 to 35 portions of bean protein powder and 1 to 2 portions of complexing agent, wherein, the complexing agent comprises the components by weight portion: 0.8 to 1.2 portions of Zinc chloride, 0.5 to 1.5 portions of copper sulfate and 0.5 to 1.5 portions of zirconium carbonate. The preparation method of the invention is fast and simple with low production cost and convenient use; the produced adhesive has no formaldehyde content and produces no toxicity and no harmful for human health and environment, thus thoroughly solving the formaldehyde pollution problems of indoor air caused by the artificial board adopting 'aldehydes' adhesive.
Description
Technical field
The present invention relates to a kind of tackiness agent and preparation method thereof, particularly a kind of tackiness agent of preparing wood-based plate and preparation method thereof that is used to.
Background technology
Along with the fast development of industries such as building, decorations, packing, the output of China's wood-based plate rapidly increases.2006,1,270 hundred million yuan of China's wood-based plate output values, wood-based plate ultimate production 7428 ten thousand steres, wherein glued board 2729 ten thousand steres, core-board 1155 ten thousand steres.Wood-based plate ultimate production, glued board output, furniture output all occupy the No. 1 in the world.The timber floor volume of production and marketing only is lower than European Union's total amount.
Because what generally adopt in the Wood-based Panel Production is that formaldehyde is tackiness agent, particularly use urea-formaldehyde resin adhesive in a large number, causing wood-based plate and goods thereof (furniture, timber floor, indoor wooden decorative material etc.) to exist formaldehyde and discharge problem, is the main source that formaldehyde pollutes in the room air pollution.
Along with the raising day by day of health of people consciousness, indoor environment consciousness, quality of life consciousness, artificial board formaldehyde discharges the polluted air, the problem that impairs one's health that cause and more and more is subject to people's attention.City in China, after " coal smoke type ", " photo-chemical smog type " polluted, the modern was just fallen into the 3rd pollution period that with " room air pollution " is sign.A Beijing City indoor pollution quality testing is surveyed the result and is shown, the room air pollution degree than outdoor high 4-8 doubly; The mean concns that is called as the formaldehyde of one of " four big stealthy killers " exceeds standard 6-7 doubly.Formaldehyde has hormesis to eye, mucous membrane and respiratory tract, can cause chronic respiratory tract disease, allergic rhinitis, lower immune function etc.; Being considered to the potential carcinogenic substance, may be the inducement of rhinocarcinoma, laryngocarcinoma, skin carcinoma.According to statistics, the death toll that exceeds the quata that China is caused by room air pollution every year reaches 11.1 ten thousand people, several 220,000 person-times of the outpatient service that exceeds the quata, several 4,300,000 person-times of the emergency treatment that exceeds the quata.Solve artificial board formaldehyde release problem and arrived instant stage.
At present, the method for reduction artificial board formaldehyde burst size mainly contains following 4 kinds: 1) adopt low mol ratio modified urea-formaldehyde resin adhesive; 2) adopt other environmental-protection type adhesives; 3) add formaldehyde-trapping agent at wood-based plate in urea-formaldehyde resin adhesive; 4) wood-based plate is carried out aftertreatment.But these technological methods all exist many defectives.For example: 1) though adopt low mol ratio modified urea-formaldehyde resin adhesive can effectively reduce the burst size of methanal of wood-based panel product, the bonding strength of product also often reduces, and can not satisfy service requirements; And prolong set time, and production efficiency reduces; 2) adopt other environmental-protection type adhesives, as the isocyanates tackiness agent, cause the production cost of wood-based plate to increase considerably, enterprise and user are difficult to accept; Low as the wood-based plate bonding strength that only adopts single alkaline bean powder adhesion agent preparation, wood-based plate easily comes unglued; 3) add formaldehyde-trapping agent at wood-based plate in urea-formaldehyde resin adhesive,, often reduce the bonding strength of wood-based plate simultaneously though can effectively reduce the free formaldehyde in artificial plate burst size; Simultaneously, general formaldehyde-trapping agent price often is higher than urea-formaldehyde resin adhesive far away, and its adding has just improved product cost, has reduced product competitiveness; 4) wood-based plate being carried out aftertreatment, is to disclose a kind of manufacturing process that adopts the ammonia vacuum method to prepare E1/EO level environment friendly artificial board in the application for a patent for invention of CN1526528 as publication number; Publication number is to disclose a kind of treatment unit that reduces artificial board formaldehyde burst size in the utility model patent of CN2394770, and these post-treating methods not only make the manufacturing process complexity of wood-based plate, and the finishing apparatus investment is huge, and production cost obviously improves.In sum, though above-mentioned measure can effectively reduce the free formaldehyde in artificial plate burst size, can not thoroughly solve formaldehyde and discharge problem, or can't promote because production cost is too high.
Summary of the invention
The objective of the invention is problem, a kind of adhesion agent for artificial board and preparation method thereof is provided at the prior art existence.The inventive method technology is simple, and is easy to operate, and the tackiness agent of production does not contain formaldehyde, is that a kind of environment friendly artificial board sticks with glue agent.
For realizing the object of the invention, one aspect of the present invention provides a kind of adhesion agent for artificial board, and its raw material comprises dispersion medium, degreasing soybean protein powder, yellow soda ash and complexing agent, and wherein complexing agent comprises zinc chloride, copper sulfate, zirconium carbonate.
Wherein, the weight part proportioning of raw material is: dispersion medium: 70-80, degreasing soybean protein powder 20-35, yellow soda ash 0.5-3, complexing agent 1-2.The weight part proportioning of raw material is selected dispersion medium: 72-76, degreasing soybean protein powder 25-30, yellow soda ash 1-2.5, complexing agent 1.2-1.8.
Wherein, complexing agent comprises zinc chloride, copper sulfate, zirconium carbonate, and the weight part proportioning between each component of complexing agent is: zinc chloride 0.8-1.2, copper sulfate 0.5-1.5 and zirconium carbonate 0.5-1.5.
Wherein, dispersion medium is selected softening water.
The present invention provides a kind of preparation method of adhesion agent for artificial board on the other hand, comprises that following step 1) in sequence is dispersed in the dispersion medium degreasing soybean protein powder and yellow soda ash; 2) adding complexing agent makes it carry out complex reaction.
Wherein in step 1), will yellow soda ash and degreasing soybean protein powder stir after adding dispersion medium, the mixture that makes acquisition is 40-80 ℃ of insulation 3-6 hour down; In step 2) in, add complexing agent when making mixture be cooled to 25-35 ℃ and stir.
Wherein the weight part proportioning of raw material is: dispersion medium: 70-80, degreasing soybean protein powder 20-35, yellow soda ash 0.5-3, complexing agent 1-2.Particularly, the weight part proportioning of raw material is selected dispersion medium: 72-76, degreasing soybean protein powder 25-30, yellow soda ash 1-2.5, complexing agent 1.2-1.8.
Wherein, complexing agent comprises zinc chloride, copper sulfate, zirconium carbonate, and the weight part proportioning between each component of complexing agent is: zinc chloride 0.8-1.2, copper sulfate 0.5-1.5 and zirconium carbonate 0.5-1.5.
Wherein, dispersion medium is selected softening water.
The present invention has the following advantages:
Therefore 1) the present invention handles the back as adhesion agent for artificial board to soybean protein, does not contain free formaldehyde, and cementitious wood-based plate does not exist formaldehyde to discharge problem, thoroughly solves the formaldehyde pollution problem in the room air that wood-based plate brings.
2) soybean protein as the main raw material of tackiness agent, helps to solve the exhausted problem of using synthetic fossil feedstock in the conventional adhesive of artificial board as a kind of reproducible resource, meets environment protection and continuable development principle.
3) soybean glue stick of the present invention is to utilize degreasing soybean protein powder to process, and has effectively utilized the soyabean processing residuum, and utilize resources synthetically saves production cost, and has improved value-added content of product.
4) the present invention adopts the compound of materials such as metal-salt and soybean protein, solved the problem of common soybean glue stick poor water resistance, can satisfy the water-fast requirement of adhesion agent for artificial board, guaranteed the Practical Performance of soybean glue stick, and reached II class glued board requirement in the GB by tackiness agent preparation of the present invention ground glued board.
Embodiment
Embodiment 1
1) get the raw materials ready by following weight proportion:
Softening water 70kg
Yellow soda ash 1kg
Degreasing soybean protein powder 25kg
Complexing agent 1.2kg
Wherein, complexing agent is the pulvis that Beijing Forestry University's Materials science and technical college prepare voluntarily, comprises 0.8 part of zinc chloride, 0.5 part in copper sulfate, 0.5 part of zirconium carbonate (weight part), and it is ground evenly, mixes.
2) in the reactor of being furnished with agitator, thermometer and condensing works, add whole softening waters, yellow soda ash, soybean protein powder, stir.
3) be heated to 45-47 ℃, insulation reaction 3 hours.
4) reactant is cooled to 30 ℃ then, makes even soybean protein mucus.
5) complexing agent is added in the soybean protein mucus of gained, mix, make the soybean glue stick.
Wherein, the performance quality index of tackiness agent sees Table 1:
Embodiment 2
1) get the raw materials ready by following weight proportion:
Softening water 80kg
Yellow soda ash 2kg
Degreasing soybean protein powder 35kg
Complexing agent 2kg
Wherein complexing agent is the pulvis that Beijing Forestry University's Materials science and technical college prepare voluntarily, and by weight ratio, 1.2 parts of zinc chloride, 1.5 parts in copper sulfate, 1.5 parts of zirconium carbonates grind it evenly, mix.
2) in the reactor of being furnished with agitator, thermometer and condensing works, add whole softening waters, yellow soda ash, soybean protein powder, stir;
3) be heated to 40-42 ℃, reacted 6 hours;
4) reactant is cooled to 30 ℃, makes even soybean protein mucus.
5) complexing agent is added in the soybean protein mucus of gained, mix, make the soybean glue stick.
Wherein, the quality index of soybean glue stick sees Table 1.
Embodiment 3
1) get the raw materials ready by following weight proportion:
Softening water 76kg
Yellow soda ash 3kg
Degreasing soybean protein powder 30kg
Complexing agent 1kg
Wherein, complexing agent is the pulvis that Beijing Forestry University's Materials science and technical college prepare voluntarily, comprises the component of following weight proportion: 1 part of zinc chloride, 1 part in copper sulfate, 1 part of zirconium carbonate, it is ground evenly, and mix.
2) in the reactor of being furnished with agitator, thermometer and condensing works, add whole softening waters, yellow soda ash, soybean protein powder, stir.
3) be heated to 68-70 ℃, reacted 5 hours.
4) reactant is cooled to 30 ℃, makes even soybean protein mucus.
5) complexing agent is added in the soybean protein mucus of gained, mix, make the soybean glue stick.
Wherein, the quality index of soybean glue stick sees Table 1.
The performance index of table 1 soybean glue stick
| Solids content (%) | The pH value | Viscosity (20 ℃) (mPas) | Free formaldehyde content (%) | Storage period (my god) | |
| Embodiment 1 | 30-40 | 8.0-9.0 | 150-300 | 0 | 3-5 |
| Embodiment 2 | 30-40 | 8.0-9.0 | 150-300 | 0 | 3-5 |
| Embodiment 3 | 30-40 | 8.0-9.0 | 150-300 | 0 | 3-5 |
Reference examples 1-3
Soybean protein mucus among the employing embodiment 1-3 is as tackiness agent reference examples 1-3.
Experimental example
Adopt the product of embodiment of the invention 1-3 and reference examples 1-3 to make three layers of 450 * 450mm glued board respectively.
Board using poplar board: water ratio is dried to 5～8%; Thick 1.6mm;
The veneer tackiness agent adopts the product of embodiment of the invention 1-5 and the product of reference examples 1-5.
Prepare glued board by following normal process:
Applying glue: the two-sided applying glue of central layer, Amount of spread are 220～300g/m
2
Ageing mode and time: closed ageing, 10～30 minutes.
Preload pressure and time: precompressed 30 minutes, pressure 0.8MPa.
Hot pressing pressure: 1.2MPa, hot pressing temperature is 120 ℃, hot pressing time is 30s/mm.
By GB/T17657-1999 " wood-based plate and face artificial board physicochemical property experimental technique " detection method the glued board product of producing is carried out Performance Detection, detected result sees Table 2.
Table 2 glueds joint the burst size of methanal and the bonding strength of glued board
| Test specimen | Burst size of methanal (mg/L) | Bonding strength (MPa) |
| Embodiment 1 | 0 | 1.01 |
| Embodiment 2 | 0 | 1.12 |
| Embodiment 3 | 0 | 1.09 |
| Reference examples 1 | 0 | 0 (coming unglued) |
| Reference examples 2 | 0 | 0 (coming unglued) |
| Reference examples 3 | 0 | 0 (coming unglued) |
Experimental result shows that the burst size of methanal of the glued board of the formaldehydeless soybean glue stick of the present invention manufacturing all is 0, and the bonding strength of glued board is big, and the performance of glued board reaches II class glued board standard in the GB.
The burst size of methanal and the physical and mechanical property index request of II class glued board are as follows: E1 level, burst size of methanal≤1.5mg/L; The E2 level, burst size of methanal≤5.0mg/L; Poplar plywood bonding strength 〉=0.7MPa.
Cost analysis:
The formaldehydeless soybean glue stick of the present invention is easy to use, needn't do change to existing Wood-based Panel Production equipment and technology, does not therefore need to increase investment or influences production efficiency.
At present, the price of the low content of free formaldehyde content urea-formaldehyde resin adhesive of 50% solids content is at 1800-2500 unit/ton, the price of synvaren is at 5000-6000 unit/ton, the price of soybean glue stick of the present invention (35% solids content) is at 1500-2000 unit/ton, price is well below synvaren, and is approaching with urea-formaldehyde resin adhesive.
The alternative conventional glued board adhesive that contains formaldehyde of tackiness agent of the present invention's preparation, total resin added during the preparation glued board is constant, therefore use cost is suitable with urea-formaldehyde resin adhesive, but well below the synvaren use cost, therefore, soybean glue stick of the present invention has a good application prospect.
Claims (9)
1. adhesion agent for artificial board, its raw material comprises dispersion medium, degreasing soybean protein powder, yellow soda ash and complexing agent, wherein the component of complexing agent comprises zinc chloride, copper sulfate, zirconium carbonate.
2. adhesion agent for artificial board as claimed in claim 1 is characterized in that the weight part proportioning of described raw material is: dispersion medium: 70-80, degreasing soybean protein powder 20-35, yellow soda ash 0.5-3, complexing agent 1-2.
3. adhesion agent for artificial board as claimed in claim 2 is characterized in that the weight part proportioning of described raw material is selected dispersion medium: 72-76, degreasing soybean protein powder 25-30, yellow soda ash 1-2.5, complexing agent 1.2-1.8.
4. as the arbitrary described adhesion agent for artificial board of claim 1-3, it is characterized in that the weight part proportioning between each component of described complexing agent is: zinc chloride 0.8-1.2, copper sulfate 0.5-1.5 and zirconium carbonate 0.5-1.5.
5. the preparation method of an adhesion agent for artificial board as claimed in claim 1 comprises that following step 1) in sequence is dispersed in the dispersion medium degreasing soybean protein powder and yellow soda ash; 2) adding complexing agent makes it carry out complex reaction.
6. the preparation method of adhesion agent for artificial board as claimed in claim 5, it is characterized in that: in described step 1), stir after described yellow soda ash and degreasing soybean protein powder added described dispersion medium, the mixture that makes acquisition is 40-80 ℃ of insulation 3-6 hour down; In described step 2) in, add described complexing agent when making described mixture be cooled to 25-35 ℃ and stir.
7. as the preparation method of claim 5 or 6 described adhesion agent for artificial board, it is characterized in that the weight part proportioning of described raw material is: dispersion medium: 70-80, degreasing soybean protein powder 20-35, yellow soda ash 0.5-3, complexing agent 1-2.
8. the preparation method of adhesion agent for artificial board as claimed in claim 7 is characterized in that the weight part proportioning of described raw material is selected dispersion medium: 72-76, degreasing soybean protein powder 25-30, yellow soda ash 1-2.5, complexing agent 1.2-1.8.
9. as the preparation method of claim 5 or 6 described adhesion agent for artificial board, it is characterized in that the weight part proportioning between each component of described complexing agent is: zinc chloride 0.8-1.2, copper sulfate 0.5-1.5 and zirconium carbonate 0.5-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710179215A CN100587020C (en) | 2007-12-11 | 2007-12-11 | Adhesive for artificial plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710179215A CN100587020C (en) | 2007-12-11 | 2007-12-11 | Adhesive for artificial plate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101191045A true CN101191045A (en) | 2008-06-04 |
| CN100587020C CN100587020C (en) | 2010-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710179215A Expired - Fee Related CN100587020C (en) | 2007-12-11 | 2007-12-11 | Adhesive for artificial plate and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632535A (en) * | 2012-04-10 | 2012-08-15 | 江南大学 | Preparation method of aldehyde-free artificial board |
| CN102977845A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for artificial board and preparation method of adhesive |
| CN102977846A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for plywood and method for preparing same |
| CN102977847A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Soyabean protein adhesive for plywood and method for preparing same |
| CN103740325A (en) * | 2013-12-30 | 2014-04-23 | 北京林业大学 | Adhesive for artificial boards and preparation method thereof, and plywood prepared from adhesive |
| CN105038695A (en) * | 2015-09-10 | 2015-11-11 | 西南林业大学 | Soybean powder label adhesive and preparation method |
| CN103740324B (en) * | 2013-12-30 | 2016-04-13 | 北京林业大学 | A kind of adhesion agent for artificial board and its preparation method and application |
| CN107903841A (en) * | 2017-11-28 | 2018-04-13 | 黄桂凤 | A kind of Adhesive for plywood and preparation method thereof |
-
2007
- 2007-12-11 CN CN200710179215A patent/CN100587020C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632535A (en) * | 2012-04-10 | 2012-08-15 | 江南大学 | Preparation method of aldehyde-free artificial board |
| CN102977845A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for artificial board and preparation method of adhesive |
| CN102977846A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for plywood and method for preparing same |
| CN102977847A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Soyabean protein adhesive for plywood and method for preparing same |
| CN102977845B (en) * | 2012-11-22 | 2015-01-21 | 北京林业大学 | Adhesive for artificial board and preparation method of adhesive |
| CN102977847B (en) * | 2012-11-22 | 2015-05-06 | 北京林业大学 | Soyabean protein adhesive for plywood and method for preparing same |
| CN102977846B (en) * | 2012-11-22 | 2015-06-24 | 北京林业大学 | Adhesive for plywood and method for preparing same |
| CN103740325A (en) * | 2013-12-30 | 2014-04-23 | 北京林业大学 | Adhesive for artificial boards and preparation method thereof, and plywood prepared from adhesive |
| CN103740324B (en) * | 2013-12-30 | 2016-04-13 | 北京林业大学 | A kind of adhesion agent for artificial board and its preparation method and application |
| CN103740325B (en) * | 2013-12-30 | 2016-04-20 | 北京林业大学 | Adhesion agent for artificial board, its preparation method and utilize its glued board |
| CN105038695A (en) * | 2015-09-10 | 2015-11-11 | 西南林业大学 | Soybean powder label adhesive and preparation method |
| CN107903841A (en) * | 2017-11-28 | 2018-04-13 | 黄桂凤 | A kind of Adhesive for plywood and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN100587020C (en) | 2010-02-03 |
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