CN107974227B - Adhesive for fixing mica tape in motor manufacturing process and preparation method and application thereof - Google Patents
Adhesive for fixing mica tape in motor manufacturing process and preparation method and application thereof Download PDFInfo
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- CN107974227B CN107974227B CN201711283322.1A CN201711283322A CN107974227B CN 107974227 B CN107974227 B CN 107974227B CN 201711283322 A CN201711283322 A CN 201711283322A CN 107974227 B CN107974227 B CN 107974227B
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- adhesive
- mica tape
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- fixing
- manufacturing process
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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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
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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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses an adhesive for fixing a mica tape in a motor manufacturing process and a preparation method and application thereof, wherein the adhesive comprises the following raw materials in parts by weight: 15-30 parts of carboxyl-terminated hyperbranched polyester, 100-200 parts of anhydride, 100-150 parts of curing agent and 1-10 parts of curing accelerator; wherein the acid value of the carboxyl-terminated hyperbranched polyester is 240-300 mgKOH/g, and the carboxyl number is 6-12; preparation: weighing the raw materials according to a formula, then reacting the hydroxyl-terminated hyperbranched polyester with anhydride at 100-120 ℃, adding the curing agent and the curing accelerator after the reaction is finished, and uniformly mixing to obtain the polyester resin; and its use in fixing mica tapes for wrapping electromagnetic wires; the adhesive disclosed by the invention has excellent comprehensive properties such as adhesive property, mechanical property, electric insulation property and the like, is low in cost, and is environment-friendly and operator-friendly.
Description
Technical Field
The invention belongs to the field of insulating materials, and particularly relates to an adhesive for fixing a mica tape in a motor manufacturing process, and a preparation method and application thereof.
Background
At present, workers in coil workshops of domestic large-scale motor manufacturers use polyimide adhesive tapes for fixation in the mica tape wrapping process, hundreds of kilograms of adhesive tapes are used in the coil workshops at least every year, the price of the adhesive tapes is 200-300 yuan/kg, large expenditure is brought to enterprises, the wrapping process is time-consuming, and the improvement of productivity is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the adhesive for fixing the mica tape in the manufacturing process of the motor, the adhesive has excellent comprehensive properties such as adhesive property, mechanical property, electric insulation property and the like, and is low in cost and friendly to environment and operators.
The invention also provides a preparation method of the adhesive for fixing the mica tape in the motor manufacturing process.
The invention also provides the application of the adhesive for fixing the mica tape in the manufacturing process of the motor in fixing the mica tape for wrapping the electromagnetic wire.
In order to solve the technical problem, the invention adopts the following technical scheme:
the adhesive for fixing the mica tape in the manufacturing process of the motor comprises the following raw materials in parts by weight:
wherein the acid value of the carboxyl-terminated hyperbranched polyester is 240-300 mgKOH/g, and the carboxyl number is 6-12.
According to some preferred aspects of the present invention, the raw materials of the adhesive comprise the following components:
further preferably, the raw materials of the adhesive comprise the following components:
according to a specific and preferred aspect of the present invention, the hydroxyl-terminated hyperbranched polyester has a number average molecular weight of 1100 to 1500.
According to some preferred aspects of the invention, the anhydride is a combination of one or more selected from the group consisting of methylhexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylnadic anhydride and eleostearic anhydride.
According to some preferred aspects of the present invention, the curing agent is a combination of one or more selected from the group consisting of epoxy curing agent E51, epoxy curing agent E44, epoxy curing agent F-51, and epoxy curing agent F-44; the curing accelerator is 2,4, 6-tris (dimethylaminomethyl) phenol.
According to a specific and preferred aspect of the present invention, the adhesive is made by mixing the reaction product of the hydroxyl-terminated hyperbranched polyester and the acid anhydride with the curing agent and the curing accelerator.
The invention provides another technical scheme that: the preparation method of the adhesive for fixing the mica tape in the manufacturing process of the motor comprises the following steps: weighing the raw materials according to a formula, then reacting the hydroxyl-terminated hyperbranched polyester with the anhydride at 100-120 ℃, adding the curing agent and the curing accelerator after the reaction is finished, and uniformly mixing to obtain the adhesive.
Preferably, the reaction is carried out at 110 to 120 ℃.
According to a specific and preferred aspect of the present invention, the temperature is reduced to 20 to 50 ℃ before the addition of the curing agent and the curing accelerator.
The invention provides another technical scheme that: a method for fixing a mica tape in a motor manufacturing process comprises the steps of coating the adhesive on a terminal of the mica tape after the mica tape is wrapped around an electromagnetic wire, and then adhering the adhesive.
Due to the implementation of the scheme, compared with the prior art, the invention has the following advantages:
the self-made adhesive disclosed by the invention does not use any organic solvent, has zero VOC (volatile organic compound) emission, reduces the damage to operators and the environment, has high viscosity and high cohesiveness in the whole adhesive system, and simultaneously, the adhesive system has good compatibility and is condensed to form a macromolecular compound by compounding the specific carboxyl-terminated hyperbranched polyester and the anhydride, so that the mechanical property and the electric insulation property of the system are enhanced, the application effect of the adhesive in fixing and wrapping a mica tape for an electromagnetic wire is excellent, and meanwhile, the preparation method is simple, the cost is low, and the use method is simple and convenient.
Detailed Description
In the prior art, polyimide adhesive tapes are adopted in the manufacturing process of the motor, although the mica tapes can be well fixed and the requirements of the motor on the use environment are met, the polyimide adhesive tapes are high in cost. The inventor of the application innovatively provides an adhesive which is suitable for fixing a mica tape and meets the requirement of a motor in a harsh environment through a large amount of research. The adhesive can completely replace polyimide tapes without bringing any negative problems, and has obvious cost advantage and better and more attractive visual effect of a coil formed by combining the fixed mica tapes and the electromagnetic wires.
The present invention will be described in further detail with reference to specific examples. It is to be understood that these examples are for the purpose of illustrating the general principles, essential features and advantages of the present invention, and the present invention is not limited by the following examples. The implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments. All the raw materials used in the examples are industrial products.
In the following examples, all starting materials are either commercially available or prepared by conventional methods in the art, unless otherwise specified. In the following examples, the hydroxyl-terminated hyperbranched polyester has an acid value of 240 to 300mgKOH/g, a hydroxyl number of 6 to 12, and a molecular weight of 1100 to 1500, and is available from Wuhan hyperbranched resin technology Limited under the types H102, H202, and H401.
Example 1
The embodiment provides an adhesive for fixing a mica tape in a motor manufacturing process, which comprises the following raw materials in parts by weight: the epoxy resin curing agent comprises the following components, by weight, 10215 parts of hydroxyl-terminated hyperbranched polyester H, 130 parts of methylhexahydrophthalic anhydride, 51110 parts of an epoxy resin curing agent E, and 2 parts of 2,4, 6-tris (dimethylaminomethyl) phenol.
The preparation method comprises the following steps: and (2) in a three-neck flask, carrying out temperature-controlled 115 +/-2 ℃ polycondensation reaction on the weighed hydroxyl-terminated hyperbranched polyester and methyl hexahydrophthalic anhydride for 2h, cooling to 30 +/-5 ℃, adding an epoxy resin curing agent E51, 2,4, 6-tris (dimethylaminomethyl) phenol, and uniformly stirring to obtain the adhesive.
Example 2
The embodiment provides an adhesive for fixing a mica tape in a motor manufacturing process, which comprises the following raw materials in parts by weight: the epoxy resin curing agent comprises, by weight, 20218 parts of hydroxyl-terminated hyperbranched polyester H, 140 parts of methyl tetrahydrophthalic anhydride, 44120 parts of an epoxy resin curing agent E, and 3.5 parts of 2,4, 6-tris (dimethylaminomethyl) phenol.
The preparation method comprises the following steps: and (2) in a three-neck flask, carrying out a polycondensation reaction on the weighed hydroxyl-terminated hyperbranched polyester and methylhexahydrophthalic anhydride at the temperature of 118 +/-2 ℃ for 2h, cooling to 30 +/-5 ℃, adding an epoxy resin curing agent E51, 2,4, 6-tris (dimethylaminomethyl) phenol, and uniformly stirring to obtain the adhesive.
Example 3
The embodiment provides an adhesive for fixing a mica tape in a motor manufacturing process, which comprises the following raw materials in parts by weight: the epoxy resin curing agent comprises, by weight, 20220 parts of hydroxyl-terminated hyperbranched polyester H, 150 parts of methyl nadic anhydride, F-51120 parts of an epoxy resin curing agent and 3.5 parts of 2,4, 6-tris (dimethylaminomethyl) phenol.
The preparation method comprises the following steps: and (2) in a three-neck flask, carrying out temperature-controlled 110 +/-2 ℃ polycondensation reaction on the weighed hydroxyl-terminated hyperbranched polyester and methyl hexahydrophthalic anhydride for 2h, cooling to 40 +/-5 ℃, adding an epoxy resin curing agent F-51, 2,4, 6-tris (dimethylaminomethyl) phenol, and uniformly stirring to obtain the adhesive.
Example 4
The embodiment provides an adhesive for fixing a mica tape in a motor manufacturing process, which comprises the following raw materials in parts by weight: the epoxy resin curing agent comprises, by weight, H40122 parts of hydroxyl-terminated hyperbranched polyester, 160 parts of tung oil anhydride, F-44130 parts of an epoxy resin curing agent and 5 parts of 2,4, 6-tris (dimethylaminomethyl) phenol.
The preparation method comprises the following steps: and (2) in a three-neck flask, carrying out a polycondensation reaction on the weighed hydroxyl-terminated hyperbranched polyester and methyl hexahydrophthalic anhydride at the temperature of 113 +/-2 ℃ for 2h, cooling to 40 +/-5 ℃, adding an epoxy resin curing agent F-44, 2,4, 6-tris (dimethylaminomethyl) phenol, and uniformly stirring to obtain the adhesive.
Comparative example 1
It is essentially the same as example 3, except that the hydroxyl-terminated hyperbranched polyester is replaced by a commercially available polyol.
Comparative example 2
It is essentially the same as example 3 except that the acid anhydride is replaced with a commercially available epoxy resin.
Performance testing
The adhesives prepared in examples 1-4 and comparative examples 1-2 were subjected to the following performance tests: (the detection method is GB2643-81), and the results are shown in the following table 1.
Watch 1
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (1)
1. A method for fixing a mica tape in the manufacturing process of a motor is characterized in that: after the mica tape is wrapped around the electromagnetic wire, coating an adhesive for fixing the mica tape in the motor manufacturing process on a terminal of the mica tape, and then sticking the mica tape;
the adhesive for fixing the mica tape in the manufacturing process of the motor comprises the following raw materials in parts by weight: hydroxyl-terminated hyperbranched polyester H40122, tung oil anhydride 160, epoxy resin curing agent F-44130 and 2,4, 6-tris (dimethylaminomethyl) phenol 5;
the preparation method comprises the following steps: in a three-neck flask, the weighed hydroxyl-terminated hyperbranched polyester H401 and tung oil anhydride are subjected to a polycondensation reaction for 2 hours at the temperature of 113 +/-2 ℃, the temperature is reduced to 40 +/-5 ℃, then an epoxy resin curing agent F-44, 2,4, 6-tris (dimethylaminomethyl) phenol is added, and the mixture is uniformly stirred to prepare the adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283322.1A CN107974227B (en) | 2017-12-07 | 2017-12-07 | Adhesive for fixing mica tape in motor manufacturing process and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283322.1A CN107974227B (en) | 2017-12-07 | 2017-12-07 | Adhesive for fixing mica tape in motor manufacturing process and preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN107974227A CN107974227A (en) | 2018-05-01 |
| CN107974227B true CN107974227B (en) | 2021-07-16 |
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| CN201711283322.1A Active CN107974227B (en) | 2017-12-07 | 2017-12-07 | Adhesive for fixing mica tape in motor manufacturing process and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110423581B (en) * | 2019-07-25 | 2020-12-25 | 齐鲁工业大学 | Waterproof antibacterial bio-based adhesive and preparation method thereof |
| CN112908524B (en) * | 2021-02-04 | 2021-10-19 | 湖南至和电缆科技有限公司 | Composite fire-resistant fireproof cable and preparation method thereof |
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| CN101961935B (en) * | 2010-07-30 | 2013-06-26 | 苏州太湖电工新材料股份有限公司 | Corona-resistant slight-glue mica tape and adhesive therefor |
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