CN110734713A - adhesion promoter for adhesive, synthesis method and application - Google Patents
adhesion promoter for adhesive, synthesis method and application Download PDFInfo
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- CN110734713A CN110734713A CN201911179627.7A CN201911179627A CN110734713A CN 110734713 A CN110734713 A CN 110734713A CN 201911179627 A CN201911179627 A CN 201911179627A CN 110734713 A CN110734713 A CN 110734713A
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- coupling agent
- silane coupling
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- 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
- C09J11/08—Macromolecular additives
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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
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
- C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
-
- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3893—Low-molecular-weight compounds having heteroatoms other than oxygen containing silicon
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the field of adhesives, in particular to an adhesion promoter for adhesives, a synthesis method and application, wherein provides adhesion promoters, the preparation raw materials of the adhesion promoters comprise isocyanate and a silane coupling agent, the molar ratio of the isocyanate to the silane coupling agent is 1 (1.5-2), the adhesion promoters prepared by using isophorone diisocyanate and hexamethylene diisocyanate as isocyanates and using diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane and the silane coupling agent D as the silane coupling agent have good fluidity, have excellent wetting capacity on different base materials, avoid the formation of weak boundary layers of water vapor, and can keep definite strength, and have excellent adhesion effect on different base materials when being applied to the adhesives.
Description
Technical Field
The invention relates to the field of adhesives, in particular to an adhesion promoter for adhesives, a synthetic method and application.
Background
With the development of science and technology, because the variety of materials used in each industry is very large, different adhesives are needed for bonding different materials, however, the bonding strength of some adhesives cannot meet the requirement, and the bonding performance can be improved by using the bonding accelerator, however, the existing bonding accelerator is single in the category, the application range is narrow, the performance is unstable, and only the bonding of a few materials can be met, and different bonding accelerators are selected according to the needs of bonding materials, so that bonding accelerators are needed to meet the bonding requirements of various base materials.
Disclosure of Invention
Aiming at problems in the prior art, the aspect of the invention provides adhesion promoters, which are prepared from raw materials including isocyanate and silane coupling agent, wherein the molar ratio of the isocyanate to the silane coupling agent is 1 (1.5-2).
As preferable embodiments of the present invention, the isocyanate includes at least of diphenylmethane diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, 4' -dicyclohexylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, p-phenylene diisocyanate, isophorone diisocyanate, 1, 5-naphthalene diisocyanate, and xylylene diisocyanate.
As preferred embodiments of the present invention, the isocyanates include isophorone diisocyanate and hexamethylene diisocyanate.
According to preferable technical schemes, the molar ratio of the isophorone diisocyanate to the hexamethylene diisocyanate is 1 (1-2).
preferable embodiments of the present invention include that the silane coupling agent comprises at least of bis- [3- (trimethoxy silicon) -propyl ] -amine, 3-urea propyl triethoxy silane, N- (2-aminoethyl) -3-aminopropyl methyl diethoxy silane, diethylene triamine propyl trimethoxy silane, 3-anilino propyl trimethoxy silane, bis- [3- (triethoxy silicon) -propyl ] -amine, N- β (aminoethyl) -gamma-aminopropyl trimethoxy silane, gamma-aminopropyl methyl diethoxy silane, and gamma-mercaptopropyl trimethoxy silane.
According to preferable technical solutions of the invention, the silane coupling agent comprises diethylenetriaminopropyltrimethoxysilane and 3-anilinopropyltrimethoxysilane.
According to preferable technical schemes, the molar ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1 (2-3).
According to preferable technical solutions, the silane coupling agent further comprises a silane coupling agent D, and the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is (1-2): 1.
As an optimal technical scheme of , the preparation method of the silane coupling agent D comprises the steps of adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-neck flask, opening a condensing device and a stirring device, introducing nitrogen, heating to 75-85 ℃, dropwise adding dimethylaminopropylacrylamide and eugenol glycidyl ether, completing dropwise adding within 2-3 h, heating to 110-130 ℃, and reacting for 1h to obtain the silane coupling agent D.
The second aspect of the invention provides a preparation method of kinds of adhesion promoters, which comprises the steps of adding isocyanate into a beaker, heating to 50 ℃, slowly dripping a silane coupling agent, and reacting for 1-5 hours at 50-70 ℃ to obtain the adhesive promoter.
Compared with the prior art, the invention has the following beneficial effects:
the adhesion promoter prepared by using isophorone diisocyanate and hexamethylene diisocyanate as isocyanates and using diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane and a silane coupling agent D as silane coupling agents has good fluidity, has excellent wetting capacity on different substrates, avoids the formation of a water vapor weak boundary layer, can keep definite strength, and has excellent bonding effect on different substrates when applied to adhesives.
Detailed Description
The present invention is illustrated by the following specific embodiments, but is not limited to the specific examples given below.
The invention provides an st aspect of adhesion promoters, which are prepared from raw materials including isocyanate and a silane coupling agent, wherein the molar ratio of the isocyanate to the silane coupling agent is 1 (1.5-2).
Preferably, the molar ratio of the isocyanate to the silane coupling agent is 1: 1.8.
in embodiments, the isocyanate includes at least of diphenylmethane diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, 4' -dicyclohexylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, p-phenylene diisocyanate, isophorone diisocyanate, 1, 5-naphthalene diisocyanate, and xylylene diisocyanate.
Preferably, the isocyanates include isophorone diisocyanate and hexamethylene diisocyanate.
Preferably, the mole ratio of isophorone diisocyanate to hexamethylene diisocyanate is 1: (1-2); more preferably, the molar ratio of isophorone diisocyanate to hexamethylene diisocyanate is 1: 1.5.
in embodiments, the silane coupling agent includes at least of bis- [3- (trimethoxy silicon) -propyl ] -amine, 3-ureidopropyltriethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane, diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane, bis- [3- (triethoxy silicon) -propyl ] -amine, N- β (aminoethyl) -gamma-aminopropyltrimethoxysilane, gamma-aminopropylmethyldiethoxysilane, gamma-mercaptopropyltrimethoxysilane.
Preferably, the silane coupling agent comprises diethylenetriaminopropyltrimethoxysilane and 3-anilinopropyltrimethoxysilane.
Preferably, the mol ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1: (2-3); more preferably, the mole ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1: 2.5.
in embodiments, the silane coupling agent further includes silane coupling agent D.
Preferably, the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is (1-2): 1; more preferably, the silane coupling agent D and the 3-anilinopropyltrimethoxysilane are present in a molar ratio of 1.5: 1.
in embodiments, the preparation method of the silane coupling agent D comprises the steps of adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-neck flask, opening a condensing device and a stirring device, introducing nitrogen, heating to 75-85 ℃, dropwise adding dimethylaminopropylacrylamide and eugenol glycidyl ether, completing dropwise adding within 2-3 h, heating to 110-130 ℃, and reacting for 1h to obtain the silane coupling agent D.
Preferably, the weight ratio of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and dimethylaminopropylacrylamide to toluene is 1: (1-2); more preferably, the weight ratio of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and dimethylaminopropylacrylamide to toluene is 1: 1.5.
preferably, the molar ratio of the gamma-glycidylpropylmethyldimethoxysilane to the dimethylaminopropylacrylamide is (1-1.5): 1; more preferably, the molar ratio of gamma-glycidylpropylmethyldimethoxysilane to dimethylaminopropylacrylamide is 1.2: 1.
preferably, the weight of the chloroplatinic acid-isopropanol is 50 x 10 of the total weight of gamma-glycidylpropylmethyldimethoxysilane and dimethylaminopropylacrylamide-6。
Preferably, the molar ratio of the eugenol glycidyl ether to the dimethylaminopropyl acrylamide is (0.3-0.6): 1; more preferably, the molar ratio of eugenol glycidyl ether to dimethylaminopropyl acrylamide is 0.5: 1.
in preferable embodiments, the preparation method of the silane coupling agent D comprises the steps of adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-neck flask, opening a condensing device and a stirring device, introducing nitrogen for 5min, heating to 80 ℃, dropwise adding dimethylaminopropylacrylamide and eugenol glycidyl ether, completing dropwise addition within 2.5h, heating to 120 ℃, and reacting for 1h to obtain the silane coupling agent D.
The structural formula of the eugenol glycidyl ether is shown in the specification
The second aspect of the invention provides a preparation method of kinds of adhesion promoters, which comprises the steps of adding isocyanate into a beaker, heating to 50 ℃, slowly dripping a silane coupling agent, and reacting for 1-5 hours at 50-70 ℃ to obtain the adhesive promoter.
In embodiments, the adhesion promoter is prepared by adding isocyanate into a beaker, heating to 50 deg.C, slowly adding silane coupling agent dropwise, and reacting at 60 deg.C for 3 h.
The adhesion promoter obtained by the invention can be applied to adhesives, such as polyurethane adhesives, silicone adhesives, silane modified polyurethane sealants, silane modified polyether sealants and the like.
When the adhesion promoter is used in the adhesive, the amount of the adhesive can be selected by those skilled in the art according to the needs.
Examples
Hereinafter, the present invention will be described in more detail by way of examples, but it should be understood that these examples are merely illustrative and not restrictive. The starting materials used in the examples which follow are all commercially available unless otherwise stated.
Example 1
The embodiment 1 of the invention provides adhesion promoters, which are prepared from raw materials including isocyanate and a silane coupling agent, wherein the molar ratio of the isocyanate to the silane coupling agent is 1: 1.5, the isocyanate includes isophorone diisocyanate and hexamethylene diisocyanate, the molar ratio of the isocyanate to the hexamethylene diisocyanate is 1: 1, the silane coupling agent includes diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane and a silane coupling agent D, the molar ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1: 2, and the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is 1: 1.
The preparation method of the silane coupling agent D comprises the following steps: adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-mouth flask, opening a condensing device and a stirring device, introducing nitrogen for 5min, heating to 80 ℃, dropwise adding dimethylaminopropylacrylamide, completing dropwise adding within 2.5h, heating to 120 ℃, and reacting for 1h to obtain the product.
The weight ratio of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide to the toluene is 1: 1; the mol ratio of the gamma-glycidylpropylmethyldimethoxysilane to the dimethylaminopropylacrylamide is 1: 1; the weight of the chloroplatinic acid-isopropanol is 50 x 10 of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide-6(ii) a The mol ratio of the eugenol glycidyl ether to the dimethylaminopropyl acrylamide is 0.5: 1.
the preparation method of the adhesion promoter comprises the following steps: adding isocyanate into a beaker, heating to 50 ℃, slowly dropwise adding a silane coupling agent, and reacting for 3 hours at 60 ℃ to obtain the isocyanate.
Example 2
The embodiment 2 of the invention provides adhesion promoters, which are prepared from raw materials including isocyanate and a silane coupling agent, wherein the molar ratio of the isocyanate to the silane coupling agent is 1: 2, the isocyanate includes isophorone diisocyanate and hexamethylene diisocyanate, the molar ratio of the isocyanate to the hexamethylene diisocyanate is 1: 2, the silane coupling agent includes diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane and a silane coupling agent D, the molar ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1: 3, and the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is 2: 1.
The preparation method of the silane coupling agent D comprises the following steps: adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-mouth flask, opening a condensing device and a stirring device, introducing nitrogen for 5min, heating to 80 ℃, dropwise adding dimethylaminopropylacrylamide, completing dropwise adding within 2.5h, heating to 120 ℃, and reacting for 1h to obtain the product.
The weight ratio of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide to the toluene is 1: 2; the gamma-glycidylpropylmethyldimethoxysilane and the dimethylamino groupMolar ratio of propyl acrylamide 1.5: 1; the weight of the chloroplatinic acid-isopropanol is 50 x 10 of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide-6(ii) a The mol ratio of the eugenol glycidyl ether to the dimethylaminopropyl acrylamide is 0.5: 1.
the preparation method of the adhesion promoter comprises the following steps: adding isocyanate into a beaker, heating to 50 ℃, slowly dropwise adding a silane coupling agent, and reacting for 3 hours at 60 ℃ to obtain the isocyanate.
Example 3
The embodiment 3 of the invention provides adhesion promoters, which are prepared from raw materials including isocyanate and a silane coupling agent, wherein the molar ratio of the isocyanate to the silane coupling agent is 1: 1.8, the isocyanate includes isophorone diisocyanate and hexamethylene diisocyanate, the molar ratio of the isocyanate to the hexamethylene diisocyanate is 1: 1.5, the silane coupling agent includes diethylenetriaminopropyltrimethoxysilane, 3-anilinopropyltrimethoxysilane and a silane coupling agent D, the molar ratio of the diethylenetriaminopropyltrimethoxysilane to the 3-anilinopropyltrimethoxysilane is 1: 2.5, and the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is 1.5: 1.
The preparation method of the silane coupling agent D comprises the following steps: adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-mouth flask, opening a condensing device and a stirring device, introducing nitrogen for 5min, heating to 80 ℃, dropwise adding dimethylaminopropylacrylamide, completing dropwise adding within 2.5h, heating to 120 ℃, and reacting for 1h to obtain the product.
The weight ratio of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide to the toluene is 1: 1.5; the mol ratio of the gamma-glycidylpropylmethyldimethoxysilane to the dimethylaminopropylacrylamide is 1.2: 1; the weight of the chloroplatinic acid-isopropanol is 50 x 10 of the total weight of the gamma-glycidylpropylmethyldimethoxysilane and the dimethylaminopropylacrylamide-6(ii) a The mol ratio of the eugenol glycidyl ether to the dimethylaminopropyl acrylamide is 0.5: 1.
the preparation method of the adhesion promoter comprises the following steps: adding isocyanate into a beaker, heating to 50 ℃, slowly dropwise adding a silane coupling agent, and reacting for 3 hours at 60 ℃ to obtain the isocyanate.
Example 4
Example 4 of the present invention provides adhesion promoters, which are similar to example 3, except that the isocyanate is isophorone diisocyanate.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 5
Example 5 of the present invention provides adhesion promoters, which are the same as example 3, except that the isocyanate is hexamethylene diisocyanate.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 6
The embodiment 6 of the invention provides adhesion promoters, which is the same as the embodiment 3 except that the silane coupling agent is diethylenetriaminopropyltrimethoxysilane.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 7
Example 7 of the present invention provides adhesion promoters, which are similar to example 3, except that the silane coupling agent is 3-anilinopropyltrimethoxysilane.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 8
The embodiment 8 of the invention provides adhesion promoters, which is the same as the embodiment 3 except that the silane coupling agent is diethylenetriaminopropyltrimethoxysilane and 3-anilinopropyltrimethoxysilane.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 9
Example 9 of the present invention provides kinds of adhesion promoters, and the specific embodiment thereof is the same as example 3, except that the silane coupling agent is silane coupling agent D.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Example 10
The embodiment 10 of the invention provides adhesion promoters, which are the same as the embodiment 3 in the specific implementation mode, and are different from the embodiment 3 in that the silane coupling agent is gamma-aminopropyl methyldiethoxysilane, diethylenetriaminopropyl trimethoxysilane and a silane coupling agent D, and the molar ratio of the diethylenetriaminopropyl trimethoxysilane to the gamma-aminopropyl methyldiethoxysilane is 1: 2.5.
The preparation method of the adhesion promoter is the same as that of the embodiment 3.
Performance evaluation
The adhesion promoter obtained in the embodiment 1-10 is applied to a polyurethane sealant.
Adding 40 parts by weight of dioctyl phthalate, 80 parts by weight of polyurethane prepolymer, 1.55 parts by weight of p-toluenesulfonyl isocyanate and 6 parts by weight of calcium oxide into a glue making kettle, stirring, vacuumizing and defoaming for 0.5 h; and stopping stirring, adding 40 parts of white carbon black, stirring for 1 hour in a vacuum state in a sealing device, then stopping stirring, adding 1.2 parts of the adhesion promoter obtained in the embodiment 1-10 and 0.15 part of di-n-butyltin dilaurate under the protection of nitrogen, vacuumizing the sealing device, continuously stirring for 10min, then filling nitrogen to normal pressure, discharging and packaging to obtain the single-component polyurethane sealant.
The peel adhesion of the obtained polyurethane sealant is tested according to QC/T1024-2015 standard, and the adhesion effect of the sealant on glass plates, aluminum plates 7075, Epoxy Molding Compounds (EMC) and concrete is respectively tested. (CF means cohesive failure)
TABLE 1
From the test results in table 1, it can be seen that the adhesion promoter provided by the present invention can achieve a good adhesion effect on metals, inorganic materials and organic materials when applied to polyurethane sealants, and is applicable to large-scale production requirements when used in fields.
The foregoing examples are illustrative only and serve to explain features of the method of the invention the appended claims are intended to claim as much as possible, and the examples presented herein are illustrative of selected embodiments based on a combination of all possible examples.
Claims (10)
- The adhesion promoters are characterized in that the preparation raw materials comprise isocyanate and silane coupling agent, and the molar ratio of the isocyanate to the silane coupling agent is 1 (1.5-2).
- 2. The adhesion promoter of claim 1, wherein the isocyanate comprises at least of diphenylmethane diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, 4' -dicyclohexylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, p-phenylene diisocyanate, isophorone diisocyanate, 1, 5-naphthalene diisocyanate, and xylylene diisocyanate.
- 3. The adhesion promoter of claim 2, wherein the isocyanates comprise isophorone diisocyanate and hexamethylene diisocyanate.
- 4. The adhesion promoter of claim 3, wherein the mole ratio of isophorone diisocyanate to hexamethylene diisocyanate is 1: (1-2).
- 5. The adhesion promoter as claimed in any , wherein the silane coupling agent comprises at least of bis- [3- (trimethoxy silicon) -propyl ] -amine, 3-urea propyl triethoxy silane, N- (2-aminoethyl) -3-aminopropyl methyl diethoxy silane, diethylene triamine propyl trimethoxy silane, 3-anilinopropyl trimethoxy silane, bis- [3- (triethoxy silicon) -propyl ] -amine, N- β (aminoethyl) -gamma-aminopropyl trimethoxy silane, gamma-aminopropyl methyl diethoxy silane, and gamma-mercaptopropyl trimethoxy silane.
- 6. The adhesion promoter of claim 5, wherein the silane coupling agent comprises diethylenetriaminopropyltrimethoxysilane and 3-anilinopropyltrimethoxysilane.
- 7. The adhesion promoter of claim 6, wherein the mole ratio of diethylenetriaminopropyltrimethoxysilane to 3-anilinopropyltrimethoxysilane is 1: (2-3).
- 8. The adhesion promoter as claimed in claim 7, wherein the silane coupling agent further comprises a silane coupling agent D, and the molar ratio of the silane coupling agent D to the 3-anilinopropyltrimethoxysilane is (1-2): 1.
- 9. the adhesion promoter as claimed in claim 8, wherein the silane coupling agent D is prepared by a method comprising: adding gamma-glycidylpropylmethyldimethoxysilane, toluene and chloroplatinic acid-isopropanol into a four-mouth flask, opening a condensing device and a stirring device, introducing nitrogen, heating to 75-85 ℃, dropwise adding dimethylaminopropylacrylamide and eugenol glycidyl ether within 2-3 h, heating to 110-130 ℃, and reacting for 1h to obtain the product.
- 10, A method for preparing the adhesion promoter according to any of claims 1-9, which is characterized in that the adhesion promoter is prepared by adding isocyanate into a beaker, heating to 50 ℃, slowly dripping silane coupling agent, and reacting for 1-5 h at 50-70 ℃.
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| CN113667095A (en) * | 2021-09-03 | 2021-11-19 | 巩义市泛锐熠辉复合材料有限公司 | Bonding auxiliary agent for foamed plastic, preparation method and application |
| CN113896852A (en) * | 2021-09-03 | 2022-01-07 | 巩义市泛锐熠辉复合材料有限公司 | Bonding auxiliary agent for foamed plastic, preparation method and application |
| CN114634787A (en) * | 2021-04-25 | 2022-06-17 | 上海蒂姆新材料科技有限公司 | PU adhesive and preparation method thereof |
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