CN105384885A - Preparation method of antibacterial moisture-proof modified urea formaldehyde resin adhesive - Google Patents
Preparation method of antibacterial moisture-proof modified urea formaldehyde resin adhesive Download PDFInfo
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- CN105384885A CN105384885A CN201510951653.2A CN201510951653A CN105384885A CN 105384885 A CN105384885 A CN 105384885A CN 201510951653 A CN201510951653 A CN 201510951653A CN 105384885 A CN105384885 A CN 105384885A
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- urea
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention discloses a preparation method of an antibacterial moisture-proof modified urea formaldehyde resin adhesive, batches of raw materials comprising, by weight, 48-50 parts of a formaldehyde solution with the mass fraction of 36.5-37.2%; 1-2 parts of polyvinyl alcohol; 10-18 parts of melamine; 6-8 parts of first batch of urea; 8-10 parts of second batch of urea; 1-2 parts of hexamethylenetetramine; 10-13 parts of third batch of urea; 7-8 parts of fourth batch of urea; and 1-1.5 parts of a mildew preventive are added in various stages, the antibacterial moisture-proof modified urea formaldehyde resin adhesive has the advantages of being antibacterial and mildew proofing, good in water resistance, good in moisture resistance, and high in bond strength.
Description
Technical field
The present invention relates to a kind of preparation method of antibacterial damp-proof modified urea-formaldehyde resin adhesive.
Background technology
Urea-formaldehyde resin is urea and formaldehyde under the effect of alkalescence or an acidic catalyst, synthesized by addition-polycondensation, general employing " alkali-acid-alkali " synthesis technique, there is addition reaction in the basic conditions, acidic conditions be occur polycondensation, chemical combination forms initial stage urea-formaldehyde resin, and then under solidifying agent or promoter effect, forms insoluble, not molten thermosetting resin in latter stage.Urea-formaldehyde resin after solidification is of light color, to be creamy white or translucent, weak acid resistant, weak base, good insulation preformance, wear resistance is splendid, low price, it is the kind that in tackiness agent, consumption is maximum. particularly in the manufacture of the various wood-based plate of wood-processing industry, urea-formaldehyde resin and modified product thereof account for about 90% of the total consumption of tackiness agent.But, the problem of moldy metamorphism, water-swelling is easily there is in the wood-based plate use procedure of producing with urea-formaldehyde resin, therefore be badly in need of a kind of when ensureing that urea-formaldehyde resin adhesive production cost is suitable, develop antibacterial and mouldproof, water-tolerant, moistureproofness is good, the urea-formaldehyde resin adhesive production technique that consolidation strength is high.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above prior art: provide a kind of antibacterial and mouldproof, water-tolerant, and moistureproofness is good, the preparation method of the antibacterial damp-proof modified urea-formaldehyde resin adhesive that consolidation strength is high.
Technical solution of the present invention is as follows: a kind of preparation method of antibacterial damp-proof modified urea-formaldehyde resin adhesive, is characterized in that: the weight part that each stage adds each batch of raw material is as follows:
Massfraction is formaldehyde solution 48-50 part of 36.5-37.2%;
Polyvinyl alcohol 1-2 part;
Trimeric cyanamide 10-18 part;
First urea 6-8 part;
Second batch urea 8-10 part;
Hexamethylenetetramine 1-2 part;
3rd batch of urea 10-13 part;
4th batch of urea 7-8 part;
Mould inhibitor 1-1.5 part;
Prepare as follows:
1) be that the formaldehyde solution of 36.5-37.2% drops in reactor by massfraction, drop into polyvinyl alcohol and be stirred to and dissolve, adjustment solution ph is to 5.0-5.5;
2) add first urea, be warmed up to 70-72 DEG C, insulation 20-25 minute, then be warmed up to 87-92 DEG C;
3) adjusted to ph is to 7.0-7.3, adds second batch urea and trimeric cyanamide, ensures that reactor temperature is 87-92 DEG C in adition process, adjusted to ph is to 5.5-5.8, carry out a polycondensation, when be coated with at 25 DEG C-4 glasss detect viscosity reach 25-30 second time, cool to 80-82 DEG C;
4) carry out secondary polycondensation at 80-82 DEG C, when be coated with at 25 DEG C-4 glasss detect viscosity reach 45-50 second time, adjust pH, to 7.5-8.0, adds hexamethylenetetramine and cools to 70-75 DEG C;
5) add the 3rd batch of urea, cool to 50-55 DEG C and be incubated 15-20 minute;
6) add the 4th batch of urea, cool to 45-48 DEG C, adjusted to ph is 8.0-8.6, adds mould inhibitor, stirs 15-18 minute, cools to less than 35 DEG C blowings.
As preferably, the weight part that each stage adds each batch of raw material is as follows:
Massfraction is the formaldehyde solution 50 parts of 36.5-37.2%;
Polyvinyl alcohol 1 part;
Trimeric cyanamide 10 parts;
6 parts, first urea;
10 parts, second batch urea;
Hexamethylenetetramine 1 part;
13 parts, the 3rd batch of urea;
8 parts, the 4th batch of urea;
Mould inhibitor 1 part.
Described mould inhibitor is pentachlorophenol or sodium pentachlorophenol.
The invention has the beneficial effects as follows: urea-formaldehyde resin adhesive prepared by the present invention has antibacterial and mouldproof, water-tolerant, moistureproofness is good, the feature that consolidation strength is high, safety and environmental protection, may be used for producing the artificial boards such as medium density fibre board (MDF), shaving board, glued board.The present invention also has rational technology, simple, and cost is low, the feature that is applicable to suitability for industrialized production.
Embodiment
With specific embodiment, the present invention is described in further details below, but the present invention is not only confined to following specific embodiment.
Embodiment one
A preparation method for antibacterial damp-proof modified urea-formaldehyde resin adhesive, the weight part that each stage adds each batch of raw material is as follows:
Massfraction is the formaldehyde solution 50 parts of 36.5-37.2%;
Polyvinyl alcohol 1 part;
Trimeric cyanamide 10 parts;
6 parts, first urea;
10 parts, second batch urea;
Hexamethylenetetramine 1 part;
13 parts, the 3rd batch of urea;
8 parts, the 4th batch of urea;
Mould inhibitor 1 part.
Described mould inhibitor is pentachlorophenol.
Prepare as follows:
1) be that the formaldehyde solution of 36.5-37.2% drops in reactor by massfraction, drop into polyvinyl alcohol and be stirred to and dissolve, adjustment solution ph is to 5.0-5.5;
2) add first urea, be warmed up to 70-72 DEG C, insulation 20-25 minute, then be warmed up to 87-92 DEG C;
3) adjusted to ph is to 7.0-7.3, adds second batch urea and trimeric cyanamide, ensures that reactor temperature is 87-92 DEG C in adition process, adjusted to ph is to 5.5-5.8, carry out a polycondensation, when be coated with at 25 DEG C-4 glasss detect viscosity reach 25-30 second time, cool to 80-82 DEG C;
4) carry out secondary polycondensation at 80-82 DEG C, when be coated with at 25 DEG C-4 glasss detect viscosity reach 45-50 second time, adjust pH, to 7.5-8.0, adds hexamethylenetetramine and cools to 70-75 DEG C;
5) add the 3rd batch of urea, cool to 50-55 DEG C and be incubated 15-20 minute;
6) add the 4th batch of urea, cool to 45-48 DEG C, adjusted to ph is 8.0-8.6, adds pentachlorophenol, stirs 15-18 minute, cools to less than 35 DEG C blowings.
Embodiment two
A preparation method for antibacterial damp-proof modified urea-formaldehyde resin adhesive, the weight part that each stage adds each batch of raw material is as follows:
Massfraction is the formaldehyde solution 48 parts of 36.5%;
Polyvinyl alcohol 2 parts;
Trimeric cyanamide 18 parts;
6 parts, first urea;
8 parts, second batch urea;
Hexamethylenetetramine 2 parts;
10 parts, the 3rd batch of urea;
7 parts, the 4th batch of urea;
Sodium pentachlorophenol 1.5 parts;
Prepare as follows:
1) by massfraction be 36.5% formaldehyde solution drop in reactor, drop into polyvinyl alcohol and be stirred to and dissolve, adjustment solution ph is to 5.5;
2) add first urea, be warmed up to 72 DEG C, be incubated 25 minutes, then be warmed up to 92 DEG C;
3) adjusted to ph is to 7.0, adds second batch urea and trimeric cyanamide, ensures that reactor temperature is 92 DEG C in adition process, and adjusted to ph, to 5.5, carries out a polycondensation, when being coated with-4 glasss of detection viscosity and reaching 25 seconds at 25 DEG C, cools to 80 DEG C;
4) carry out secondary polycondensation at 80 DEG C, when being coated with-4 glasss of detection viscosity and reaching 50 seconds at 25 DEG C, adjust pH to 7.5, adds hexamethylenetetramine and cools to 70 DEG C;
5) add the 3rd batch of urea, cool to 50 DEG C and be incubated 20 minutes;
6) add the 4th batch of urea, cool to 45 DEG C, adjusted to ph is 8.6, adds sodium pentachlorophenol, stirs 18 minutes, cools to less than 35 DEG C blowings.
Embodiment three
A preparation method for antibacterial damp-proof modified urea-formaldehyde resin adhesive, the weight part that each stage adds each batch of raw material is as follows:
Massfraction is the formaldehyde solution 50 parts of 37.2%;
Polyvinyl alcohol 2 parts;
Trimeric cyanamide 15 parts;
7 parts, first urea;
9 parts, second batch urea;
Hexamethylenetetramine 1 part;
10 parts, the 3rd batch of urea;
8 parts, the 4th batch of urea;
Sodium pentachlorophenol 1 part;
Prepare as follows:
1) by massfraction be 37.2% formaldehyde solution drop in reactor, drop into polyvinyl alcohol and be stirred to and dissolve, adjustment solution ph is to 5.0;
2) add first urea, be warmed up to 70 DEG C, be incubated 25 minutes, then be warmed up to 87 DEG C;
3) adjusted to ph is to 7.0, adds second batch urea and trimeric cyanamide, ensures that reactor temperature is 87 DEG C in adition process, and adjusted to ph, to 5.8, carries out a polycondensation, when being coated with-4 glasss of detection viscosity and reaching 30 seconds at 25 DEG C, cools to 82 DEG C;
4) carry out secondary polycondensation at 82 DEG C, when being coated with-4 glasss of detection viscosity and reaching 45 seconds at 25 DEG C, adjust pH to 7.5, adds hexamethylenetetramine and cools to 70 DEG C;
5) add the 3rd batch of urea, cool to 55 DEG C and be incubated 20 minutes;
6) add the 4th batch of urea, cool to 45 DEG C, adjusted to ph is 8.0, adds sodium pentachlorophenol, stirs 18 minutes, cools to less than 35 DEG C blowings.
Below be only that feature of the present invention implements example, scope is not constituted any limitation.The technical scheme that all employings exchange on an equal basis or equivalence is replaced and formed, all drops within rights protection scope of the present invention.
Claims (3)
1. a preparation method for antibacterial damp-proof modified urea-formaldehyde resin adhesive, is characterized in that: the weight part that each stage adds each batch of raw material is as follows:
Massfraction is formaldehyde solution 48-50 part of 36.5-37.2%;
Polyvinyl alcohol 1-2 part;
Trimeric cyanamide 10-18 part;
First urea 6-8 part;
Second batch urea 8-10 part;
Hexamethylenetetramine 1-2 part;
3rd batch of urea 10-13 part;
4th batch of urea 7-8 part;
Mould inhibitor 1-1.5 part;
Prepare as follows:
1) be that the formaldehyde solution of 36.5-37.2% drops in reactor by massfraction, drop into polyvinyl alcohol and be stirred to and dissolve, adjustment solution ph is to 5.0-5.5;
2) add first urea, be warmed up to 70-72 DEG C, insulation 20-25 minute, then be warmed up to 87-92 DEG C;
3) adjusted to ph is to 7.0-7.3, adds second batch urea and trimeric cyanamide, ensures that reactor temperature is 87-92 DEG C in adition process, adjusted to ph is to 5.5-5.8, carry out a polycondensation, when be coated with at 25 DEG C-4 glasss detect viscosity reach 25-30 second time, cool to 80-82 DEG C;
4) carry out secondary polycondensation at 80-82 DEG C, when be coated with at 25 DEG C-4 glasss detect viscosity reach 45-50 second time, adjust pH, to 7.5-8.0, adds hexamethylenetetramine and cools to 70-75 DEG C;
5) add the 3rd batch of urea, cool to 50-55 DEG C and be incubated 15-20 minute;
6) add the 4th batch of urea, cool to 45-48 DEG C, adjusted to ph is 8.0-8.6, adds mould inhibitor, stirs 15-18 minute, cools to less than 35 DEG C blowings.
2. the preparation method of antibacterial damp-proof modified urea-formaldehyde resin adhesive according to claim 1, is characterized in that: the weight part that each stage adds each batch of raw material is as follows:
Massfraction is the formaldehyde solution 50 parts of 36.5-37.2%;
Polyvinyl alcohol 1 part;
Trimeric cyanamide 10 parts;
6 parts, first urea;
10 parts, second batch urea;
Hexamethylenetetramine 1 part;
13 parts, the 3rd batch of urea;
8 parts, the 4th batch of urea;
Mould inhibitor 1 part.
3. the preparation method of antibacterial damp-proof modified urea-formaldehyde resin adhesive according to claim 1, is characterized in that: described mould inhibitor is pentachlorophenol or sodium pentachlorophenol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510951653.2A CN105384885A (en) | 2015-12-20 | 2015-12-20 | Preparation method of antibacterial moisture-proof modified urea formaldehyde resin adhesive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510951653.2A CN105384885A (en) | 2015-12-20 | 2015-12-20 | Preparation method of antibacterial moisture-proof modified urea formaldehyde resin adhesive |
Publications (1)
| Publication Number | Publication Date |
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| CN105384885A true CN105384885A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510951653.2A Pending CN105384885A (en) | 2015-12-20 | 2015-12-20 | Preparation method of antibacterial moisture-proof modified urea formaldehyde resin adhesive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936889A (en) * | 2017-12-30 | 2018-04-20 | 广州市仪美医用家具科技股份有限公司 | A kind of novel mildew resistant resin adhesive and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| CN1304942A (en) * | 2000-05-12 | 2001-07-25 | 中国石油天然气股份有限公司兰州石化分公司 | Water-proof lower-aldehyde urea-formaldehyde resin and its preparing process |
| CN1994701A (en) * | 2006-12-30 | 2007-07-11 | 四川升达林产工业集团有限公司 | Reinforced fiber board with medium-density |
| CN101270270A (en) * | 2008-04-28 | 2008-09-24 | 赵学开 | Modified environment protection type urea formaldehyde resin adhesive |
| CN102086257A (en) * | 2010-06-28 | 2011-06-08 | 永港伟方（北京）科技股份有限公司 | Environment-friendly urea resin for laminating plywoods from high water-content veneers and preparation and application thereof |
| CN102453456A (en) * | 2010-10-21 | 2012-05-16 | 陈亮 | Environment-friendly resin adhesive for plywood |
-
2015
- 2015-12-20 CN CN201510951653.2A patent/CN105384885A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304942A (en) * | 2000-05-12 | 2001-07-25 | 中国石油天然气股份有限公司兰州石化分公司 | Water-proof lower-aldehyde urea-formaldehyde resin and its preparing process |
| CN1994701A (en) * | 2006-12-30 | 2007-07-11 | 四川升达林产工业集团有限公司 | Reinforced fiber board with medium-density |
| CN101270270A (en) * | 2008-04-28 | 2008-09-24 | 赵学开 | Modified environment protection type urea formaldehyde resin adhesive |
| CN102086257A (en) * | 2010-06-28 | 2011-06-08 | 永港伟方（北京）科技股份有限公司 | Environment-friendly urea resin for laminating plywoods from high water-content veneers and preparation and application thereof |
| CN102453456A (en) * | 2010-10-21 | 2012-05-16 | 陈亮 | Environment-friendly resin adhesive for plywood |
Non-Patent Citations (2)
| Title |
|---|
| 李和平等: "《木材胶黏剂》", 31 January 2009, 化学工业出版社 * |
| 顾继友等: "《胶黏剂与涂料》", 30 September 2012, 中国林业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936889A (en) * | 2017-12-30 | 2018-04-20 | 广州市仪美医用家具科技股份有限公司 | A kind of novel mildew resistant resin adhesive and preparation method thereof |
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Address after: 343100 Ji'an City, Jiangxi Province Economic and Technological Development Zone Jinggangshan Ji Tai Road No. 29 Applicant after: Jiangxi Oasis Environmental Protection new material Limited by Share Ltd Address before: 343100 Ji'an City, Jiangxi Province Economic and Technological Development Zone Jinggangshan Ji Tai Road No. 29 Applicant before: Jiangxi Lvzhou Artificial Board Co., Ltd. |
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Application publication date: 20160309 |
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