CN110862799A - Water-based polyurethane adhesive and preparation method thereof - Google Patents
Water-based polyurethane adhesive and preparation method thereof Download PDFInfo
- Publication number
- CN110862799A CN110862799A CN201910976655.5A CN201910976655A CN110862799A CN 110862799 A CN110862799 A CN 110862799A CN 201910976655 A CN201910976655 A CN 201910976655A CN 110862799 A CN110862799 A CN 110862799A
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- CN
- China
- Prior art keywords
- parts
- polyurethane adhesive
- polyether polyol
- antioxidant
- catalyst
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Classifications
-
- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Abstract
The invention discloses a water-based polyurethane adhesive, which comprises the following components in parts by weight: 20-30 parts of polyether polyol, 40-50 parts of epoxy resin, 5-7 parts of isocyanate, 8-10 parts of N-methyl pyrrolidone, 0.5-1 part of catalyst, 1-2 parts of coupling agent, 1.5-3 parts of antioxidant and 0.7-1.6 parts of curing agent; the invention adopts polyether polyol with hydroxyl number of 2000-2500, epoxy resin, isocyanate, N-methyl pyrrolidone and catalyst to polymerize to form a macromolecular chain, thereby enhancing the viscosity of the polyurethane adhesive, and adding auxiliary agents such as curing agent, antioxidant and the like to solve the problems of easy curing and easy aging of the polyurethane adhesive.
Description
Technical Field
The invention relates to a water-based polyurethane adhesive and a preparation method thereof, belonging to the technical field of glue.
Background
Polyurethane adhesives are an important branch of the current adhesive art. The polyurethane adhesive forms chemical bond action by means of the reaction between isocyanate group in the system and active hydrogen-containing substance outside the system, so as to realize the purpose of adhesion. Compared with phenolic adhesives and epoxy adhesives, the epoxy adhesive has the advantages of high bonding strength, large initial adhesion, high storage stability, high drying speed, environmental friendliness, simple construction process, wide construction temperature range and the like. In addition, the polyurethane adhesive has excellent rubber characteristics, can adapt to the adhesion of base materials with different thermal expansion coefficients, can form a soft-hard transition layer between the base materials, and has excellent buffering and shock absorption functions. In view of the excellent performance of polyurethane adhesives, it is worth mentioning that the low-temperature and ultralow-temperature performance of polyurethane adhesives exceeds that of all other types of adhesives, and the polyurethane adhesives are widely applied in the fields of aerospace, ships, buildings, home furnishing, manufacturing and the like at present, but the polyurethane adhesives have the defects of low viscosity, difficult curing and easy aging, so that the aqueous polyurethane adhesives and the preparation method thereof are provided.
Disclosure of Invention
The invention mainly aims to provide a water-based polyurethane adhesive and a preparation method thereof, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the waterborne polyurethane adhesive comprises the following components in parts by weight: 20-30 parts of polyether polyol, 40-50 parts of epoxy resin, 5-7 parts of isocyanate, 8-10 parts of N-methyl pyrrolidone, 0.5-1 part of catalyst, 1-2 parts of coupling agent, 1.5-3 parts of antioxidant and 0.7-1.6 parts of curing agent.
Further, the polyether polyol is prepared by carrying out free radical graft polymerization on soft foam polyether triol, high-activity polyether, vinyl monomers such as acrylonitrile, styrene, methyl methacrylate, vinyl acetate and vinyl chloride and an initiator at the temperature of about 100 ℃ under the protection of nitrogen.
Further, the polyether polyol has a hydroxyl number of 2000-2500.
Further, the catalyst is one or more of triethanolamine, triethylenediamine and dibutyltin dilaurate.
Furthermore, the coupling agent is one or more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane or gamma- (methacryloyloxy) propyltrimethoxysilane.
Further, the antioxidant is one or more of triethylene glycol bis- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate ], 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid octadecyl carbonate and 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid isooctyl ester.
Further, the curing agent is vinyl triamine.
A preparation method of polyurethane glue comprises the following steps:
1) adding polyether polyol, epoxy resin, isocyanate, N-methyl pyrrolidone and a catalyst into a reaction kettle according to the weight parts, continuously stirring under the conditions that the pressure is 0.095MPa and the temperature is 180 ℃, reacting for 0.9-1h, and then preserving heat and pressure for 0.5h to obtain a mixture A;
2) and adding the coupling agent, the antioxidant and the curing agent in parts by weight into the mixture A, continuously stirring, uniformly mixing, and cooling to room temperature to obtain the polyurethane adhesive.
The invention adopts polyether polyol with hydroxyl number of 2000-2500, epoxy resin, isocyanate, N-methyl pyrrolidone and catalyst to polymerize to form a macromolecular chain, thereby enhancing the viscosity of the polyurethane adhesive, and adding auxiliary agents such as curing agent, antioxidant and the like to solve the problems of easy curing and easy aging of the polyurethane adhesive.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The embodiment provides a water-based polyurethane adhesive, which comprises the following components in parts by weight: 20-30 parts of polyether polyol, 40-50 parts of epoxy resin, 5-7 parts of isocyanate, 8-10 parts of N-methyl pyrrolidone, 0.5-1 part of catalyst, 1-2 parts of coupling agent, 1.5-3 parts of antioxidant and 0.7-1.6 parts of curing agent.
Further, the polyurethane adhesive comprises the following components in parts by weight: 25 parts of polyether polyol, 46 parts of epoxy resin, 6 parts of isocyanate, 9 parts of N-methyl pyrrolidone, 0.7 part of catalyst, 1.6 parts of coupling agent, 2.1 parts of antioxidant and 1.2 parts of curing agent.
Further, the polyether polyol is prepared by carrying out free radical graft polymerization on soft foam polyether triol, high-activity polyether, vinyl monomers such as acrylonitrile, styrene, methyl methacrylate, vinyl acetate and vinyl chloride and an initiator at the temperature of about 100 ℃ under the protection of nitrogen.
Further, the polyether polyol has a hydroxyl number of 2000-2500.
Further, the catalyst is one or more of triethanolamine, triethylenediamine and dibutyltin dilaurate.
Furthermore, the coupling agent is one or more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane or gamma- (methacryloyloxy) propyltrimethoxysilane.
Further, the antioxidant is one or more of triethylene glycol bis- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate ], 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid octadecyl carbonate and 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid isooctyl ester.
Further, the curing agent is vinyl triamine.
A preparation method of polyurethane glue comprises the following steps:
1) adding polyether polyol, epoxy resin, isocyanate, N-methyl pyrrolidone and a catalyst into a reaction kettle according to the weight parts, continuously stirring under the conditions that the pressure is 0.095MPa and the temperature is 180 ℃, reacting for 0.9-1h, and then preserving heat and pressure for 0.5h to obtain a mixture A;
and adding the coupling agent, the antioxidant and the curing agent in parts by weight into the mixture A, continuously stirring, uniformly mixing, and cooling to room temperature to obtain the polyurethane adhesive.
The polyether polyol with the hydroxyl number of 2000-2500, the epoxy resin, the isocyanate, the N-methyl pyrrolidone and the catalyst are polymerized to form a polymer chain, so that the viscosity of the polyurethane adhesive is enhanced, and the problems of easy curing and easy aging of the polyurethane adhesive are solved by adding the curing agent, the antioxidant and other auxiliaries.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The waterborne polyurethane adhesive is characterized by comprising the following components in parts by weight: 20-30 parts of polyether polyol, 40-50 parts of epoxy resin, 5-7 parts of isocyanate, 8-10 parts of N-methyl pyrrolidone, 0.5-1 part of catalyst, 1-2 parts of coupling agent, 1.5-3 parts of antioxidant and 0.7-1.6 parts of curing agent.
2. The aqueous polyurethane adhesive of claim 1, wherein: the polyether polyol is prepared by carrying out free radical graft polymerization on soft foam polyether triol, high-activity polyether, vinyl monomers such as acrylonitrile, styrene, methyl methacrylate, vinyl acetate, vinyl chloride and the like and an initiator at about 100 ℃ under the protection of nitrogen.
3. The aqueous polyurethane adhesive of claim 1, wherein: the hydroxyl number of the polyether polyol is 2000-.
4. The aqueous polyurethane adhesive of claim 1, wherein: the catalyst is one or more of triethanolamine, triethylene diamine and dibutyltin dilaurate.
5. The aqueous polyurethane adhesive of claim 1, wherein: the coupling agent is one or more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane or gamma- (methacryloyloxy) propyltrimethoxysilane.
6. The aqueous polyurethane adhesive of claim 1, wherein: the antioxidant is one or more of triethylene glycol bis- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate ], 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid octadecyl carbonate and 3, 5-di-tert-butyl-4-hydroxyphenyl propionic acid isooctyl ester.
7. The aqueous polyurethane adhesive of claim 1, wherein: the curing agent is vinyl triamine.
8. A method for preparing polyurethane glue according to claims 1-7, characterized in that it comprises the following steps:
1) adding polyether polyol, epoxy resin, isocyanate, N-methyl pyrrolidone and a catalyst into a reaction kettle according to the weight parts, continuously stirring under the conditions that the pressure is 0.095MPa and the temperature is 180 ℃, reacting for 0.9-1h, and then preserving heat and pressure for 0.5h to obtain a mixture A;
2) and adding the coupling agent, the antioxidant and the curing agent in parts by weight into the mixture A, continuously stirring, uniformly mixing, and cooling to room temperature to obtain the polyurethane adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910976655.5A CN110862799A (en) | 2019-10-15 | 2019-10-15 | Water-based polyurethane adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910976655.5A CN110862799A (en) | 2019-10-15 | 2019-10-15 | Water-based polyurethane adhesive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN110862799A true CN110862799A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910976655.5A Pending CN110862799A (en) | 2019-10-15 | 2019-10-15 | Water-based polyurethane adhesive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874101A (en) * | 2021-02-18 | 2021-06-01 | 石家庄康岁商贸有限公司 | Reflective warning tape and preparation method thereof |
| CN115141591A (en) * | 2022-08-22 | 2022-10-04 | 哈尔滨工业大学无锡新材料研究院 | Epoxy resin modified single-component polyurethane structural adhesive and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358122A (en) * | 2007-07-30 | 2009-02-04 | 湖南神力实业有限公司 | One-component polyurethane adhesive from epoxy resin modification and preparation method thereof |
| US20130255880A1 (en) * | 2010-12-08 | 2013-10-03 | Dow Global Technologies Llc | Two-part polyurethane adhesive for bonding fiber-reinforced plastics |
| CN105860912A (en) * | 2016-04-14 | 2016-08-17 | 久盛地板有限公司 | Polyimide modified polyurethane adhesive and preparing method thereof |
-
2019
- 2019-10-15 CN CN201910976655.5A patent/CN110862799A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358122A (en) * | 2007-07-30 | 2009-02-04 | 湖南神力实业有限公司 | One-component polyurethane adhesive from epoxy resin modification and preparation method thereof |
| US20130255880A1 (en) * | 2010-12-08 | 2013-10-03 | Dow Global Technologies Llc | Two-part polyurethane adhesive for bonding fiber-reinforced plastics |
| CN105860912A (en) * | 2016-04-14 | 2016-08-17 | 久盛地板有限公司 | Polyimide modified polyurethane adhesive and preparing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874101A (en) * | 2021-02-18 | 2021-06-01 | 石家庄康岁商贸有限公司 | Reflective warning tape and preparation method thereof |
| CN112874101B (en) * | 2021-02-18 | 2022-08-09 | 石家庄康岁商贸有限公司 | Reflective warning tape and preparation method thereof |
| CN115141591A (en) * | 2022-08-22 | 2022-10-04 | 哈尔滨工业大学无锡新材料研究院 | Epoxy resin modified single-component polyurethane structural adhesive and preparation method thereof |
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Application publication date: 20200306 |