CN115947924A - Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof - Google Patents
Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof Download PDFInfo
- Publication number
- CN115947924A CN115947924A CN202211215311.0A CN202211215311A CN115947924A CN 115947924 A CN115947924 A CN 115947924A CN 202211215311 A CN202211215311 A CN 202211215311A CN 115947924 A CN115947924 A CN 115947924A
- Authority
- CN
- China
- Prior art keywords
- polyurethane adhesive
- aluminum paste
- preparation
- conductive aluminum
- polyester polyol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The application relates to the field of preparation of polyurethane adhesives, and particularly discloses a polyurethane adhesive for conductive aluminum paste and a preparation method and application thereof. The polyurethane adhesive for the conductive aluminum paste is prepared from the following raw materials in parts by weight: 15% -25% of polyester polyol, 15% -25% of polycarbonate polyol, 10% -20% of polyisocyanate, 2% -8% of chain extender, 32% -48% of solvent, 0.2% -0.6% of phosphoric acid polymerization inhibitor and 5% -10% of antioxidant; the preparation method adopts a mode of firstly carrying out bulk prepolymerization on polyol and isocyanate and then carrying out chain extension; the polyurethane adhesive of the present application can be used for conductive aluminum paste, which has the advantages of high shear strength and high tear strength. The polyurethane adhesive for the conductive aluminum paste has the advantages of high toughness and high bonding strength; in addition, the preparation method has the advantage of improving the bonding performance of the polyurethane adhesive.
Description
Technical Field
The application relates to the field of preparation of polyurethane adhesives, in particular to a polyurethane adhesive for conductive aluminum paste, a preparation method and application thereof.
Background
Polyurethane (PU) adhesives are adhesives containing urethane groups (NHCOO) and/or isocyanate groups (NCO) in the matrix. The polyurethane adhesive contains polar groups such as urethane groups, isocyanate groups, carbamido groups and the like, can form covalent bonds and hydrogen bonds with materials containing active hydrogen, and is applied to the bonding operation of various materials.
The conductive polyurethane adhesive is prepared by adding conductive particles, a dispersing agent and other fillers into the polyurethane adhesive, and is generally used in various electronic fields of microelectronic packaging, conductive circuit bonding and conductive printing plates. After the conductive polyurethane adhesive is cured, the volume of the adhesive is shrunk, so that a molecular skeleton structure of the conductive adhesive is formed, the guarantee of mechanical property and bonding property is provided, and conductive filler particles form stable continuous contact with each other to form a conductive channel.
Since the bonding strength of the conductive polyurethane adhesive is much lower than that of the metal solder, and the impact resistance of the component is affected by using the polyurethane adhesive in some small-distance connections, a polyurethane adhesive with high bonding strength and high toughness needs to be developed.
Disclosure of Invention
In order to improve the bonding strength and toughness of the conductive polyurethane adhesive, the application provides a polyurethane adhesive for conductive aluminum paste, a preparation method and application thereof.
In a first aspect, the present application provides a polyurethane adhesive for conductive aluminum paste, which adopts the following technical scheme: a polyurethane adhesive for conductive aluminum paste is prepared from the following raw materials in percentage by weight:
15% -25% of polyester polyol, 15% -25% of polycarbonate polyol, 10% -20% of polyisocyanate, 2% -8% of chain extender, 32% -48% of solvent, 0.2% -0.6% of phosphoric acid polymerization inhibitor and 5% -10% of antioxidant.
By adopting the technical scheme, the polyester polyol can improve the adhesion between the adhesive and the metal matrix and the toughness of the adhesive; the polycarbonate polyol can improve the adhesion strength and hardness of the adhesive; the polyisocyanate provides high-polarity isocyanate groups, is favorable for enhancing the adhesion of the polyurethane adhesive, has small molecular volume and is easy to diffuse, and the polyurethane adhesive is convenient to permeate into a metal matrix, so that the adhesion force is improved, and the adhesion strength is enhanced; the chain extender can accelerate the reaction speed of the system, improve the surface dryness and enhance the adhesion.
In a specific possible embodiment, the polyester polyol is made from raw materials comprising, per part by weight: adipic acid: phthalic anhydride: isophthalic acid: maleic anhydride: ethylene glycol: diethylene glycol =1.2-1.8: 2.2-2.8.
By adopting the technical scheme, the polyester polyol prepared from the raw materials has high polarity and cohesive energy due to the ester bond, so that the polyurethane adhesive product obtained from the raw materials has high adhesive force and high toughness.
In a particular embodiment, the polyester polyol is prepared per part by weight as follows:
proportionally, putting adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol and diethylene glycol into a reaction bottle, slowly heating to 140-150 ℃ for esterification and polycondensation, steaming at normal pressure to remove byproducts, keeping the temperature at 220-250 ℃, reacting for 1.5-3 hours, vacuumizing to remove small water and small molecular alcohol, reducing the acid value to 0.3-0.5mgKOH/g, and measuring the hydroxyl value to be within the range of 31-33 mgKOH/g to obtain the polyester polyol, and cooling for later use.
By adopting the technical scheme, the polyester polyol is prepared, and the polyurethane adhesive prepared from the polyester polyol has better adhesion and toughness.
In a specific embodiment, the polyisocyanate is selected from one or a combination of toluene diisocyanate, isophorone diisocyanate and diphenylmethane diisocyanate.
By adopting the technical scheme, the polyisocyanate provides the isocyanate group with high polarity, the adhesion of the polyurethane adhesive is favorably enhanced, the molecular volume of the polyisocyanate is small, the polyisocyanate is easy to diffuse, and the polyurethane adhesive is convenient to permeate into a metal matrix, so that the adhesion is improved, and the adhesion strength is enhanced.
Preferably, the polyisocyanate is toluene diisocyanate.
By adopting the technical scheme, the prepared polyurethane adhesive has better adhesion strength.
In a specific embodiment, the chain extender is selected from one or a combination of more of 1, 4-butanediol, 1, 6-hexanediol and diethylene glycol.
By adopting the technical scheme, the chain extender can accelerate the reaction speed of a system, enhance surface drying and enhance bonding preference, and the chain extender is 1, 6-hexanediol.
By adopting the technical scheme, the polyurethane adhesive has better adhesion.
Preferably, the solvent is ethyl acetate.
By adopting the technical scheme, the raw material components are better mixed and dissolved.
Preferably, the antioxidant is selected from one or a combination of more of 2, 6-di-tert-butyl-4 (dimethylaminomethyl) phenol and trilauryl phosphite.
Through adopting above-mentioned technical scheme, can provide the antioxidant effect of preferred.
In a second aspect, the present application provides a method for preparing a polyurethane adhesive for conductive aluminum paste, which adopts the following technical scheme:
a preparation method of a polyurethane adhesive for conductive aluminum paste comprises the following steps:
step1, mixing polyester polyol, polycarbonate polyol, phosphoric acid and an antioxidant according to a ratio, fully stirring, and controlling the temperature to be 40-60 ℃;
step2, adding toluene diisocyanate according to the functionality of 2.0, controlling the temperature to rise to 82-88 ℃, and reacting for 1.5-3 hours;
step3, adding a solvent for cooling, adding a chain extender, adding the rest toluene diisocyanate when the temperature is reduced to 50-70 ℃, and slowly heating to 82-88 ℃;
and Step4, controlling the viscosity to be 4000-6000 cps/25 ℃, and cooling to obtain the polyurethane adhesive for the conductive aluminum paste.
By adopting the technical scheme, the mode of pre-polymerizing the polyol and the isocyanate in advance and then chain extending is adopted, so that the heat resistance and the bonding property of the polyurethane adhesive are improved, the polyurethane adhesive has excellent bonding strength and toughness, and the polyurethane adhesive for the conductive aluminum paste with high bonding strength and high toughness is prepared.
In a third aspect, the present application provides an application of a polyurethane adhesive, which adopts the following technical scheme:
an application of a polyurethane adhesive is applied to conductive aluminum paste.
By adopting the technical scheme, the prepared conductive aluminum paste has excellent high shear strength and high tear strength.
In summary, the present application has the following beneficial effects:
1. the polyurethane adhesive used in the invention is prepared from polyester polyol, polycarbonate polyol, toluene diisocyanate, other auxiliaries and the like, wherein the polyester polyol can improve the adhesion and toughness of the polyurethane adhesive and a metal matrix, and the polycarbonate polyol can improve the adhesion strength and hardness of the polyurethane adhesive, so that the prepared adhesive for conductive aluminum paste has high adhesion strength and high toughness;
2. when the polyurethane adhesive is prepared, the heat resistance and the bonding performance of the polyurethane adhesive are improved by adopting a mode of pre-polymerizing a polyester polyol, a polycarbonate polyol and polyisocyanate in a body mode and then extending a chain.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation examples of polyester polyols
Preparation example 1
The polyester polyol is prepared by the following method in parts by weight: mixing adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol and diethylene glycol in a molar ratio of 1.5: 2.5 putting into a reaction bottle, slowly heating to 150 ℃ for esterification and polycondensation, steaming at normal pressure to remove most of byproducts, keeping the temperature at 240 ℃ for reaction for 2 hours, vacuumizing to remove a small amount of water and small molecular alcohol, reducing the acid value to 0.4mgKOH/g, and determining the hydroxyl value to be 32mgKOH/g to obtain the polyester polyol with the number average molecular weight of 3500
Preparation example 2
The preparation differs from preparation 1 only in that the molar ratio of adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol, diethylene glycol is 1.2: 2.2.
preparation example 3
The present preparation differs from preparation 1 only in that the molar ratio of adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol, diethylene glycol is 1.8: 2.8.
preparation example of polyurethane adhesive
Preparation example 1
The polyurethane adhesive is prepared by the following method in parts by weight:
step1, adding 200g of polyester polyol, 200g of polycarbonate polyol, 0.04g of phosphoric acid and 0.8g of antioxidant into a reaction kettle, and fully stirring at the temperature of 50 ℃;
step2, adding 150g of polyisocyanate according to the functionality of 2.0, controlling the temperature to slowly rise to 85 ℃, and reacting for 2 hours;
step3, adding 399.16g of solvent for cooling, simultaneously adding 50g of chain extender, adding the rest polyisocyanate when the temperature is reduced to 65 ℃, and slowly heating to 85 ℃;
and controlling the final viscosity of Step4 at 5000cps/25 ℃, and cooling to obtain the polyurethane adhesive.
In this example, preparation example 1 in which polyester polyol was used as the polyester polyol; the antioxidant is a combination of 2, 6-di-tert-butyl-4 (dimethylaminomethyl) phenol and trilauryl phosphite, and the weight ratio of the 2, 6-di-tert-butyl-4 (dimethylaminomethyl) phenol to the trilauryl phosphite is 4; the chain extender is 1, 6-hexanediol, and the polyisocyanate is toluene diisocyanate.
Preparation example 2
The preparation example is different from the preparation example 1 only in that the polyurethane adhesive is prepared from the following raw materials by weight: 150g of polyester polyol, 250g of polycarbonate polyol, 100g of toluene diisocyanate, 20g of chain extender, 479.48g of solvent, 0.02g of phosphoric acid and 0.5g of antioxidant.
Preparation example 3
The preparation example is different from the preparation example 1 only in that the polyurethane adhesive is prepared from the following raw materials by weight: 250g of polyester polyol, 150g of polycarbonate polyol, 200g of toluene diisocyanate, 80g of chain extender, 318.94g of solvent, 0.06g of phosphoric acid and 1g of antioxidant.
Preparation example 4
This preparation example differs from preparation example 1 only in preparation example 2 in which the polyester polyol is selected as the polyester polyol.
Preparation example 5
This preparation example differs from preparation example 1 only in preparation example 3 in which the polyester polyol is selected as the polyester polyol.
Preparation example 6
The preparation example is different from the preparation example 1 only in that 1, 4-butanediol is used as the chain extender.
Preparation example 7
The preparation example is different from the preparation example 1 only in that the chain extender is diethylene glycol.
Preparation example 8
The preparation differs from preparation 1 only in that isophorone diisocyanate is used as the polyisocyanate.
Preparation example 9
The preparation differs from preparation 1 only in that diphenylmethane diisocyanate is used as the polyisocyanate.
Examples
Example 1
And (3) sequentially adding 100g of polyurethane adhesive, 13g of curing agent, 250g of aluminum powder, 30g of dispersing agent, 30g of silane coupling agent and 6g of lead-free glass powder into the batching cup, and uniformly stirring to obtain the conductive aluminum paste.
In this example, the curing agent was NCO type curing agent L-75, the silane coupling agent was KH-550, the aluminum powder was FLT1, the dispersant was BYK-2151, the silane coupling agent was Z-6172, and the lead-free glass powder was PM-806-B. The polyurethane adhesive in this example is polyurethane adhesive preparation example 1.
Example 2
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 2 of the polyurethane adhesive.
Example 3
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 3 of the polyurethane adhesive.
Example 4
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 4 of polyurethane adhesive.
Example 5
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 5 of polyurethane adhesive.
Example 6
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 6 of polyurethane adhesive.
Example 7
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 7 of the polyurethane adhesive.
Example 8
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 8 of the polyurethane adhesive.
Example 9
This example is different from example 1 only in that the polyurethane adhesive is selected from preparation example 9 of polyurethane adhesive.
Comparative example
Comparative example 1
A polyurethane adhesive is prepared by the following method:
step1, dehydrating a mixture of 85 parts of poly (1, 6-hexanediol) diol and polyoxyethylene diol in a weight ratio of 12:1 at 110 ℃ for 2h, cooling to 55 ℃, adding 60 parts of p-xylylene diisocyanate, gradually heating to 80 ℃ for reaction for 2h to obtain a prepolymer, cooling to 70 ℃, adding 90 parts of dehydrated ethyl acetate, dissolving and dispersing the prepolymer in the ethyl acetate at a rotation speed of 1500rpm, and defoaming in vacuum for 20s until no rising liquid level exists in the mixture;
step2, sequentially adding 15 parts of a mixture of isophorone diamine and 1, 4-butanediol and 4 parts of 2-dodecyl acrylate in a weight ratio of 1 into the solution of the prepolymer, rapidly stirring uniformly at the rotation speed of 800rpm, continuously and sequentially adding 1 part of a hexanetriol and trimethylolpropane mixed internal crosslinking agent and 2 parts of external crosslinking agent isocyanurate in a weight ratio of 1, 11 parts of 4, 5-epoxy tetrahydrophthalic acid diglycidyl ester, titanium dioxide and a mixture of triisostearoyl titanium isopropyl ester in a weight ratio of 10;
(4) Preheating a mold brushed with a release agent at 120 ℃ for 20min, pouring the solution reacted in the step (3) into the mold, covering the mold, pressurizing at 10MPa, vulcanizing for 2h, taking out the vulcanized mold, taking out the sample, and vulcanizing for 10h at 100 ℃ to obtain the polyurethane adhesive.
And (3) sequentially adding 100g of the polyurethane adhesive, 13g of the curing agent, 250g of aluminum powder, 30g of the dispersing agent, 30g of the silane coupling agent and 6g of lead-free glass powder into a batching cup, and uniformly stirring to obtain the conductive aluminum paste.
Performance testing test one: and (3) detecting the sintering appearance: and (3) sintering the conductive aluminum paste prepared in each embodiment and each comparative example at a high temperature to form a film, observing the surface condition of the film, and determining that the conductive aluminum paste is qualified if the conductive aluminum paste is flat and has no package, low warping degree, compact aluminum film and good overall appearance, or else, determining that the conductive aluminum paste is unqualified.
And (2) testing: and (3) testing the boiling resistance: after the conductive aluminum pastes prepared in the examples and the comparative examples are printed and sintered and attached on the silicon substrate, the substrate is immersed in warm water at 70 ℃ and boiled in water for 3min, and the conductive aluminum paste is qualified if no bubbling or powder removal occurs, and is unqualified if no bubbling or powder removal occurs.
And (3) testing: and (3) testing the adhesive force: the adhesive force of the conductive aluminum paste is measured according to the national standard GB/T17473.4-2008; and (4) testing: t-peel strength test: the peel strength of the conductive aluminum paste was measured according to the national standard GB/T8808-1988.
TABLE 1 Performance test results
Referring to table 1, in combination with examples 1 to 3 and comparative example 1, it can be seen that the polyurethane adhesive prepared according to the raw material formulation and method disclosed in the present application can impart better adhesion and peel strength to the aluminum paste, even though the aluminum paste has better toughness and adhesive strength. Polyester polyol synthesized by adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol and diethylene glycol can endow the polyurethane adhesive with better cohesiveness and toughness, and polycarbonate polyol can provide better hardness and cohesive strength for polyurethane polyol; the bonding performance of the polyurethane adhesive is further improved by adopting a mode of pre-polymerizing the polyol and the isocyanate in a body mode and then extending the chain.
By combining the embodiments 1, 8 and 9, the toluene diisocyanate is selected as the polyisocyanate to prepare the polyurethane adhesive, so that the conductive aluminum paste can have better adhesive force and peel strength, the toluene diisocyanate can provide high-polarity isocyanate groups, the adhesion of the polyurethane adhesive is increased, and the polyurethane adhesive can be conveniently infiltrated into the metal matrix to improve the adhesive force and enhance the adhesion strength.
By combining the embodiments 1,6 and 7, the surface drying can be improved by selecting 1, 6-hexanediol as the chain extender, so that the conductive aluminum paste can obtain better adhesion and peeling strength.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The polyurethane adhesive for the conductive aluminum paste is characterized by being prepared from the following raw materials in percentage by weight:
15 to 25 percent of polyester polyol,
15 to 25 percent of polycarbonate polyol,
10 to 20 percent of polyisocyanate,
2 to 8 percent of chain extender
32 to 48 percent of solvent,
0.2 to 0.6 percent of phosphoric acid polymerization inhibitor,
5% -10% of antioxidant.
2. The polyurethane adhesive for aluminum paste according to claim 1, wherein: the polyester polyol is prepared from the following raw materials in parts by weight: adipic acid: phthalic anhydride: isophthalic acid: maleic anhydride: ethylene glycol: diethylene glycol =1.2-1.8: 2.2-2.8.
3. The polyurethane adhesive for aluminum paste according to claim 2, wherein: the polyester polyol is prepared by the following method in parts by weight:
putting adipic acid, phthalic anhydride, isophthalic acid, maleic anhydride, ethylene glycol and diethylene glycol into a reaction bottle according to the proportion, slowly heating to 140-150 ℃ for esterification and polycondensation, evaporating under normal pressure to remove byproducts, keeping the temperature at 220-250 ℃, reacting for 1.5-3 hours, vacuumizing to remove small water and small molecular alcohol, reducing the acid value to 0.3-0.5mgKOH/g, measuring the hydroxyl value within the range of 31-33mgKOH/g, obtaining polyester polyol, and cooling for later use.
4. The polyurethane adhesive for aluminum paste according to claim 1, wherein: the polyisocyanate is selected from one or a combination of toluene diisocyanate, isophorone diisocyanate and diphenylmethane diisocyanate.
5. The urethane adhesive for aluminum paste as claimed in claim 4, wherein: the polyisocyanate is toluene diisocyanate.
6. The polyurethane adhesive for aluminum paste according to claim 1, wherein: the chain extender is selected from one or a combination of more of 1, 4-butanediol, 1, 6-hexanediol and diethylene glycol.
7. The polyurethane adhesive for aluminum paste according to claim 6, wherein: the chain extender is 1, 6-hexanediol.
8. The urethane adhesive for aluminum paste according to claim 1, wherein: the antioxidant is selected from one or a combination of 2, 6-di-tert-butyl-4 (dimethylaminomethyl) phenol and trilauryl phosphite.
9. The method for preparing the polyurethane adhesive for conductive aluminum paste as claimed in any one of claims 1 to 8, wherein:
step1, mixing polyester polyol, polycarbonate polyol, phosphoric acid and an antioxidant according to a ratio, fully stirring, and controlling the temperature to be 40-60 ℃;
step2, adding toluene diisocyanate according to the functionality of 2.0, controlling the temperature to rise to 82-88 ℃, and reacting for 1.5-3 hours;
step3, adding a solvent for cooling, adding a chain extender at the same time, adding the residual toluene diisocyanate when the temperature is reduced to 50-70 ℃, and slowly heating to 82-88 ℃;
and Step4, controlling the viscosity to be 4000-6000 cps/25 ℃, and cooling to prepare the polyurethane adhesive for the conductive aluminum paste.
10. The application of the polyurethane adhesive is characterized in that the polyurethane adhesive is applied to conductive aluminum paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211215311.0A CN115947924A (en) | 2022-09-30 | 2022-09-30 | Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211215311.0A CN115947924A (en) | 2022-09-30 | 2022-09-30 | Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115947924A true CN115947924A (en) | 2023-04-11 |
Family
ID=87286450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211215311.0A Pending CN115947924A (en) | 2022-09-30 | 2022-09-30 | Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115947924A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117089311A (en) * | 2023-06-13 | 2023-11-21 | 东莞市博翔电子材料有限公司 | Conductive waterproof sealant and application thereof in field of electronic components |
-
2022
- 2022-09-30 CN CN202211215311.0A patent/CN115947924A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117089311A (en) * | 2023-06-13 | 2023-11-21 | 东莞市博翔电子材料有限公司 | Conductive waterproof sealant and application thereof in field of electronic components |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103215006B (en) | Multiple film glue of a kind of Low viscosity solvent-free polyurethane and preparation method thereof | |
| JP5976112B2 (en) | Curable conductive adhesive composition, electromagnetic wave shielding film, conductive adhesive film, adhesion method and circuit board | |
| JP5381707B2 (en) | Resin composition containing thermoplastic polyurethane and hot melt adhesive | |
| TWI759308B (en) | Two-component adhesive compositions and methods of making same | |
| WO2014003159A1 (en) | Conductive adhesive composition, conductive adhesive film, bonding method, and circuit board | |
| US20080308226A1 (en) | Two-Component Curable Solventless Adhesive | |
| EP1985679A1 (en) | Laminating adhesive | |
| KR20170029527A (en) | Heat-curable resin composition, polyamide, adhesive sheet, cured article, and printed wiring board | |
| CN107406574A (en) | Ultralow monomer polyurethane | |
| CN107459959B (en) | Boiling-resistant solvent-free adhesive for flexible package and preparation method thereof | |
| JP6324712B2 (en) | Adhesive for food packaging film | |
| CN111349417A (en) | Polyurethane adhesive composition and polyurethane adhesive | |
| CN111217992A (en) | Polyester polyol and moisture-curing polyurethane hot melt adhesive prepared from same | |
| CN115947924A (en) | Polyurethane adhesive for conductive aluminum paste and preparation method and application thereof | |
| CN107903864A (en) | A kind of wet-heat resisting hyperbranched polyorganosiloxane is modified adhesive and preparation method thereof | |
| KR20160140575A (en) | Adhesive composition for printed wiring board, laminate, and flexible printed wiring board | |
| WO2019107199A1 (en) | Curable resin composition and electrical component using this | |
| WO2008010294A1 (en) | Circuit connection material, circuit member connecting structure and method of connecting circuit member | |
| JPH06116542A (en) | Adhesive composition | |
| CN115820191A (en) | Two-component polyurethane structural adhesive for high-elasticity bonding of power battery | |
| US20200291170A1 (en) | Curable resin composition and eletrical component using the same | |
| TWI631180B (en) | Thermosetting resin composition, bonding sheet, cured product, and printed wiring board | |
| KR101488916B1 (en) | Anisotropic conductive film and the semiconductor device | |
| JP2023552957A (en) | One-component structural adhesive | |
| JP7404364B2 (en) | adhesive composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |