CN102766424A - Preparation method of environment-friendly moistureproof glue - Google Patents
Preparation method of environment-friendly moistureproof glue Download PDFInfo
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- CN102766424A CN102766424A CN2012102768187A CN201210276818A CN102766424A CN 102766424 A CN102766424 A CN 102766424A CN 2012102768187 A CN2012102768187 A CN 2012102768187A CN 201210276818 A CN201210276818 A CN 201210276818A CN 102766424 A CN102766424 A CN 102766424A
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Abstract
The invention relates to a preparation method of environment-friendly moistureproof glue. The preparation method includes weighing formaldehyde and urea according to a mole ratio of 1:1.1-1.3, adding polyvinyl alcohol in the formaldehyde, allowing for reaction for more than 10 minutes, and adding alkali under mixing to adjust pH to 8.0-8.5; adding the urea for the first time along with addition of melamine and modifier, releasing steam to heat to 88-92 DEG C, releasing steam to hold temperature for more than 30 minutes to guarantee pH of solution to be 6.5; adding the urea for the second and third times along with addition of the melamine and auxiliary, and adding the urea to adjust the pH of the solution to 8.0; vacuum-dewatering for more than 120 minutes, holding the temperature for 80-100 seconds when the temperature of the solution reaches 20 DEG C; and adding the urea for the fourth time, allowing for dissolution and reaction for more than 30 minutes, adjusting the pH to 7.5-8.0 when the temperature drops to 40 DEG C, and discharging glue to obtain the environment-friendly moistureproof glue. The environment-friendly moistureproof glue is environment-friendly and moistureproof. Step addition of the urea and low mole ratio guarantee environmental friendliness of the glue. The environment-friendly moistureproof glue has fine water proofing and moisture proofing effects when used to produce artificial boards and is long in service life, and product quality is improved.
Description
Technical field
The invention belongs to the environment-friendly type macromolecule new material technology field, relate to a kind of preparation method who is used to produce the moistureproof glue of environment-friendly type of wood-based plate.
Background technology
China's wood-based plate output ranked first in the world from 2004, though wood-based plate output is big, kind is few, and particularly functional kind very little.Present most of factory only produces furniture type or the coventional type MDF that uses under the drying conditions, has satisfied not the demand of market development.The new national standard GB/T 11718-2009 " medium density fibre board (MDF) " that on April 1st, 2010 was played enforcement classifies to MDF by different working conditionss.No matter 3 types of MDFs are coventional type, furniture type or bearing type, all are subdivided into drying, humidity, high humidity and outdoor 4 kinds of user modes by different environmental conditions, and have stipulated the performance index of these 3 types of MDFs under different states.New national standard has not only improved requirement to the thickness swelling rate of the MDF that uses under the dampness, also requires it to still have suitable intensity to guarantee the MDF that under dampness, uses through the humidity resistance test.As everyone knows, physical and mechanical property index of MDF (comprise surface bonding strength, internal bond strength, MOR, thickness swelling rate and hold screw power etc.) and environmental protection index (burst size of methanal) all will rely on the sizing agent that is adopted to guarantee.Up to the present in the used sizing agent of MDF, the overwhelming majority is a urea-formaldehyde glue.Yet, in boiling water, boiling 2 h or behind 70 ℃ of bubbly water 2 h, the plate shape of can not fall apart for a long time can't be surveyed its internal bond strength or moist static bending strength at all again with the MDF of common urea-formaldehyde glue compacting, also just can't test through humidity resistance.
China implements " formaldehyde discharges and limits the quantity of indoor decorating material wood-based plate and the goods thereof " compulsory standard from January 1st, 2002, the burst size of methanal of wood-based plate has been proposed the requirement of firewood.Therefore by the requirement of new national standard, producing not only environmental protection but also the moistureproof moistureproof glue of environment-friendly type is a very urgent subject.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art
, it is a kind of that the present invention providesPreparing method with moistureproof glue of environment-friendly type of environmental protection and moistureproof two kinds of functions.
The technical solution adopted for the present invention to solve the technical problems is: the preparation method of the moistureproof glue of a kind of environment-friendly type, and its process step is:
The first step: take by weighing formaldehyde and urea respectively according to mol ratio 1:1.1～1.3, in formaldehyde, add Z 150PH, the Z 150PH that is added and the weight ratio of formaldehyde are 1:145～155, and reaction is also stirred more than 10 minutes and added alkali, transfers between pH=8.0～8.5;
Second step: after the first step is handled, add urea for the first time, and add trimeric cyanamide and properties-correcting agent simultaneously; Open steam and be warmed up to 88～92 ℃; Open steam insulation then more than 30 minutes, guarantee that the pH value of solution is 6.5, urea the first time add-on and the weight ratio of formaldehyde be 1:3.1～3.3; Trimeric cyanamide that is added and urea the first time add-on weight ratio be 1:7.5～8.5, add properties-correcting agent and urea the first time add-on weight ratio be 1:47～49;
The 3rd step: after second step handled, continue the pH value of insulation and adjustment solution, the pH value that makes solution is 6.0, and after insulation more than 30 minutes, continuing to transfer the pH value of solution is 5.1, and soaking time was measured the viscosity of solution then at 80～90 minutes; When soltion viscosity reaches 3000mPas; Add for the second time urea; And add trimeric cyanamide and auxiliary agent simultaneously; The add-on second time of urea be urea the first time add-on 50～55%, the trimeric cyanamide that is added for the second time be for the second time the urea add-on 30～40%, add auxiliary agent for the second time and be 2～2.5% of the urea add-on second time; When soltion viscosity reaches 5000mPas; Add urea for the third time, and add trimeric cyanamide and auxiliary agent simultaneously, for the third time the urea add-on be for the first time the urea add-on 25～28%; The trimeric cyanamide that is added for the third time be for the third time the urea add-on 70～75%; Add auxiliary agent for the third time and be 4～4.5% of urea add-on for the third time, stir more than 10 minutes, regulator solution pH value is 8.0;
The 4th step: will carry out vacuum hydro-extraction through the solution after the 3rd step handled and handle more than 120 minutes, insulation is 80～100 seconds when the temperature of solution reaches to 20 ℃;
The 5th step: the 4th adding urea in the solution after the 4th step processed finishes; The 4th urea add-on be for the first time the urea add-on 25～30%; After 30 minutes, when cooling to 40 ℃, adjust pH is 7.5～8.0 again through solubilizing reaction; Put glue then, make the moistureproof glue product of environment-friendly type.
Positively effect of the present invention is: adopt formaldehyde, trimeric cyanamide, urea, auxiliary agent, properties-correcting agent
Carry outThe moistureproof glue product of the environment-friendly type that cocondensation makes has environmental protection and moistureproof two kinds of functions, and trimeric cyanamide has more functionality, and its adding will produce more and be cross-linked with each other; Simultaneously trimeric cyanamide itself is again a ring texture, has excellent water tolerance, and it is crosslinked with the hydrophilic methylol generation in the urea-formaldehyde resin; Generate firm water-proof methylol bridge; Thereby played good moisture effect, the gradation of urea adds and hangs down the feature of environmental protection that mol ratio has guaranteed glue, adopts the waterproof moisture-proof effect of the wood-based plate that environment-friendly type protection against the tide glue product of the present invention produced good; Long service life has improved the environmental-protecting performance and the quality product of product.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
The preparation method of the moistureproof glue of a kind of environment-friendly type, its process step is:
The first step: take by weighing formaldehyde and urea respectively according to mol ratio 1:1.1～1.3, in formaldehyde, add Z 150PH, the Z 150PH that is added and the weight ratio of formaldehyde are 1:145～155, and reaction is also stirred more than 10 minutes and added alkali, transfers between pH=8.0～8.5;
Second step: after the first step is handled, add urea for the first time, and add trimeric cyanamide and properties-correcting agent simultaneously; Open steam and be warmed up to 88～92 ℃; Open steam insulation then more than 30 minutes, guarantee that the pH value of solution is 6.5, urea the first time add-on and the weight ratio of formaldehyde be 1:3.1～3.3; Trimeric cyanamide that is added and urea the first time add-on weight ratio be 1:7.5～8.5, add properties-correcting agent and urea the first time add-on weight ratio be 1:47～49;
The 3rd step: after second step handled, continue the pH value of insulation and adjustment solution, the pH value that makes solution is 6.0; After insulation more than 30 minutes, continuing to transfer the pH value of solution is 5.1, and soaking time was at 80～90 minutes; Measure the viscosity of solution then, when soltion viscosity reaches 3000mPas, add urea for the second time; And add trimeric cyanamide and auxiliary agent simultaneously; The add-on second time of urea be urea the first time add-on 50～55%, the trimeric cyanamide that is added for the second time be for the second time the urea add-on 30～40%, add auxiliary agent for the second time and be 2～2.5% of the urea add-on second time; When soltion viscosity reaches 5000mPas; Add urea for the third time, and add trimeric cyanamide and auxiliary agent simultaneously, for the third time the urea add-on be for the first time the urea add-on 25～28%; The trimeric cyanamide that is added for the third time be for the third time the urea add-on 70～75%; Add auxiliary agent for the third time and be 4～4.5% of urea add-on for the third time, stir more than 10 minutes, regulator solution pH value is 8.0;
The 4th step: will carry out vacuum hydro-extraction through the solution after the 3rd step handled and handle more than 120 minutes, insulation is 80～100 seconds when the temperature of solution reaches to 20 ℃;
The 5th step: the 4th adding urea in the solution after the 4th step processed finishes; The 4th urea add-on be for the first time the urea add-on 25～30%; After 30 minutes, when cooling to 40 ℃, adjust pH is 7.5～8.0 again through solubilizing reaction; Put glue then, make the moistureproof glue product of environment-friendly type.
The present invention adopts formaldehyde, Z 150PH, trimeric cyanamide, urea, auxiliary agent, properties-correcting agent
Carry outThe moistureproof glue product of the environment-friendly type that cocondensation makes has environmental protection and moistureproof two kinds of functions, and trimeric cyanamide has more functionality, and its adding will produce more and be cross-linked with each other; Simultaneously trimeric cyanamide itself is again a ring texture, has excellent water tolerance, and it is crosslinked with the hydrophilic methylol generation in the urea-formaldehyde resin; Generate firm water-proof methylol bridge; Thereby played good moisture effect, the gradation of urea adds and hangs down the feature of environmental protection that mol ratio has guaranteed glue, adopts the waterproof moisture-proof effect of the wood-based plate that environment-friendly type protection against the tide glue product of the present invention produced good; Long service life has improved the environmental-protecting performance and the quality product of product.
Embodiment 1:
The preparation method of the moistureproof glue of a kind of environment-friendly type, its process step is:
At first take by weighing raw material formaldehyde and urea respectively according to mol ratio 1:1.1～1.3; In the formaldehyde of 18065kg, add Z 150PH 120kg, reacted 10 minutes, and stir and to add alkali, transfer between pH=8.0～8.5 of solution; In above-mentioned solution, for the first time add urea 5750kg, add trimeric cyanamide 720kg simultaneously, add properties-correcting agent 150kg, when opening steam and being warmed up to 90 ℃, opened steam insulation 40 minutes, adjust the pH value of solution value this moment is 6.5; Above-mentioned solution is incubated processing, transfers pH value of solution value to 6.0 simultaneously, be incubated after 30 minutes; Transferring the pH value of solution value again is 5.1, and the time was measured the viscosity of solution then after 80～90 minutes; When soltion viscosity reaches 3000mPas; Add auxiliary agent 70kg, add urea 3050 kg for the second time, add trimeric cyanamide 1080kg; When soltion viscosity reaches 5000mPas, add urea 1500kg for the third time, add auxiliary agent 65kg, add trimeric cyanamide 1080kg, stir after 10 minutes, transfer pH value of solution value to 8.0; Carry out vacuum hydro-extraction again and handled 120 minutes, when temperature to 20 ℃, be incubated 80～100 seconds; After dehydration finishes, add 1635kg urea the 4th time, solubilizing reaction is after 30 minutes, when cooling to 40 ℃, transfer pH value of solution value=7.5～8.0 again after, put glue, make the moistureproof glue product of environment-friendly type.
The present invention adopts formaldehyde, Z 150PH, trimeric cyanamide, urea, auxiliary agent, properties-correcting agent
Carry outThe moistureproof glue product of the environment-friendly type that cocondensation makes has environmental protection and moistureproof two kinds of functions; The gradation of urea adds and hangs down the feature of environmental protection that mol ratio has guaranteed glue; Adopt the waterproof moisture-proof effect of the wood-based plate that the moistureproof glue product of environment-friendly type of the present invention produced good; Long service life has improved the environmental-protecting performance and the quality product of product.
Claims (1)
1. the preparation method of the moistureproof glue of an environment-friendly type is characterized in that process step is:
The first step: take by weighing formaldehyde and urea respectively according to mol ratio 1:1.1～1.3, in formaldehyde, add Z 150PH, the Z 150PH that is added and the weight ratio of formaldehyde are 1:145～155, and reaction is also stirred more than 10 minutes and added alkali, transfers between pH=8.0～8.5;
Second step: after the first step is handled, add urea for the first time, and add trimeric cyanamide and properties-correcting agent simultaneously; Open steam and be warmed up to 88～92 ℃; Open steam insulation then more than 30 minutes, guarantee that the pH value of solution is 6.5, urea the first time add-on and the weight ratio of formaldehyde be 1:3.1～3.3; Trimeric cyanamide that is added and urea the first time add-on weight ratio be 1:7.5～8.5, add properties-correcting agent and urea the first time add-on weight ratio be 1:47～49;
The 3rd step: after second step handled, continue the pH value of insulation and adjustment solution, the pH value that makes solution is 6.0, and after insulation more than 30 minutes, continuing to transfer the pH value of solution is 5.1, and soaking time was measured the viscosity of solution then at 80～90 minutes; When soltion viscosity reaches 3000mPas; Add for the second time urea; And add trimeric cyanamide and auxiliary agent simultaneously; The add-on second time of urea be urea the first time add-on 50～55%, the trimeric cyanamide that is added for the second time be for the second time the urea add-on 30～40%, add auxiliary agent for the second time and be 2～2.5% of the urea add-on second time; When soltion viscosity reaches 5000mPas; Add urea for the third time, and add trimeric cyanamide and auxiliary agent simultaneously, for the third time the urea add-on be for the first time the urea add-on 25～28%; The trimeric cyanamide that is added for the third time be for the third time the urea add-on 70～75%; Add auxiliary agent for the third time and be 4～4.5% of urea add-on for the third time, stir more than 10 minutes, regulator solution pH value is 8.0;
The 4th step: will carry out vacuum hydro-extraction through the solution after the 3rd step handled and handle more than 120 minutes, insulation is 80～100 seconds when the temperature of solution reaches to 20 ℃;
The 5th step: the 4th adding urea in the solution after the 4th step processed finishes; The 4th urea add-on be for the first time the urea add-on 25～30%; After 30 minutes, when cooling to 40 ℃, adjust pH is 7.5～8.0 again through solubilizing reaction; Put glue then, make the moistureproof glue product of environment-friendly type.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151298A (en) * | 2017-05-09 | 2017-09-12 | 陕西中兴林产科技股份有限公司 | Modified urea-formaldehyde glue of E0 grades of medium density fibre board (MDF)s of applewood and preparation method thereof |
| CN114855504A (en) * | 2022-05-16 | 2022-08-05 | 广东轻工职业技术学院 | Glue applying combination for fluorine-free food paper and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262301A (en) * | 2000-01-21 | 2000-08-09 | 北京星海乐器有限责任公司星海粘合剂厂 | Environment protection type urea-formaldehyde resin adhesive |
| CN101244571A (en) * | 2008-03-21 | 2008-08-20 | 中国林业科学研究院林产化学工业研究所 | Method for manufacturing E0 level wood veneer |
| CN102604573A (en) * | 2012-01-12 | 2012-07-25 | 北华大学 | E0-grade melamine modified urea-formaldehyde resin adhesive, and preparation method and application thereof |
-
2012
- 2012-08-06 CN CN201210276818.7A patent/CN102766424B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262301A (en) * | 2000-01-21 | 2000-08-09 | 北京星海乐器有限责任公司星海粘合剂厂 | Environment protection type urea-formaldehyde resin adhesive |
| CN101244571A (en) * | 2008-03-21 | 2008-08-20 | 中国林业科学研究院林产化学工业研究所 | Method for manufacturing E0 level wood veneer |
| CN102604573A (en) * | 2012-01-12 | 2012-07-25 | 北华大学 | E0-grade melamine modified urea-formaldehyde resin adhesive, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李东光: "《脲醛树脂胶黏剂》", 31 August 2002, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151298A (en) * | 2017-05-09 | 2017-09-12 | 陕西中兴林产科技股份有限公司 | Modified urea-formaldehyde glue of E0 grades of medium density fibre board (MDF)s of applewood and preparation method thereof |
| CN114855504A (en) * | 2022-05-16 | 2022-08-05 | 广东轻工职业技术学院 | Glue applying combination for fluorine-free food paper and preparation method and application thereof |
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| CN102766424B (en) | 2014-06-11 |
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Denomination of invention: Preparation method of environment-friendly moistureproof glue Effective date of registration: 20151105 Granted publication date: 20140611 Pledgee: Guangzhou auspicious Finance Leasing Co., Ltd. Pledgor: Guangdong Shixing Huazhou Wood Industry Co., Ltd. Registration number: 2015440000021 |
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Date of cancellation: 20200617 Granted publication date: 20140611 Pledgee: Guangzhou auspicious Finance Leasing Co., Ltd. Pledgor: GUANGDONG SHIXING HUAZHOU WOOD INDUSTRY Co.,Ltd. Registration number: 2015440000021 |
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Denomination of invention: Preparation method of environment friendly moisture proof glue Effective date of registration: 20210423 Granted publication date: 20140611 Pledgee: China Co. truction Bank Corp Guangzhou Yuexiu branch Pledgor: GUANGDONG SHIXING HUAZHOU WOOD INDUSTRY Co.,Ltd. Registration number: Y2021440000147 |