CN113462323A - Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof - Google Patents
Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof Download PDFInfo
- Publication number
- CN113462323A CN113462323A CN202110867927.5A CN202110867927A CN113462323A CN 113462323 A CN113462323 A CN 113462323A CN 202110867927 A CN202110867927 A CN 202110867927A CN 113462323 A CN113462323 A CN 113462323A
- Authority
- CN
- China
- Prior art keywords
- acrylic
- blend
- styrene
- deformation recovery
- based adhesive
- 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
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides an acrylic acid-based adhesive capable of deformation recovery and a preparation method thereof, wherein the preparation method comprises the following steps: uniformly mixing an acrylic acid adhesive and a styrene-isoprene-styrene elastomer to prepare a blend A; adding a cross-linking agent into the blend A, and uniformly mixing to obtain a blend B; and uniformly coating the blend B on a film, drying, and then heating for crosslinking to obtain the deformation recovery acrylic-based adhesive. The adhesive property and the deformation recovery rate of the acrylic adhesive/styrene-isoprene-styrene elastomer system are improved by strictly controlling the proportion of the acrylic adhesive and the styrene-isoprene-styrene elastomer, the usage amount of the cross-linking agent and the temperature control method of thermal cross-linking.
Description
Technical Field
The invention relates to an acrylic acid-based adhesive capable of deformation recovery and a preparation method thereof, belonging to the field of composite adhesive materials.
Background
Acrylic adhesives are important in a variety of fields because they allow easy separation of substrates under weak pressure without leaving residues when used to assemble different materials. Acrylic adhesives contain a variety of reactive monomers that can be modified to impart functionality, and are most widely used in industrial applications such as splicing tapes, graphic films, display products, and medical products. When acrylic adhesives are used to secure the various layers in a flexible display, they must be able to withstand the stresses and strains resulting from bending or rolling. However, sufficient deformation and recovery have not been achieved using acrylic adhesives alone.
Disclosure of Invention
The invention aims to provide an acrylic adhesive capable of deformation recovery and a preparation method thereof, and aims to solve the problem of insufficient deformation capability of the adhesive in the prior art.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
a preparation method of an acrylic adhesive capable of deformation recovery comprises the following steps:
uniformly mixing an acrylic acid adhesive and a styrene-isoprene-styrene elastomer to prepare a blend A;
adding a cross-linking agent into the blend A, and uniformly mixing to obtain a blend B;
and uniformly coating the blend B on a film, drying, and then heating for crosslinking to obtain the deformation recovery acrylic-based adhesive.
Further, the mixing is performed by mechanical stirring and/or ultrasonic treatment.
Further, the acrylic adhesive accounts for 80-95 parts by weight.
Furthermore, the styrene-isoprene-styrene elastomer accounts for 5-20 parts by weight.
Further, the cross-linking agent is an amino resin with an isocyanate content of between 12.5% and 13.5%.
Furthermore, the cross-linking agent is 0.2 to 1.0 weight part according to the weight part.
Further, the drying temperature is 80 ℃, and the drying time is 10 min.
Further, the method for heating and crosslinking comprises the following steps: thermal crosslinking is carried out for 5 min at 110 ℃ and then for 12 h at 70 ℃.
Further, the film is any one of a polyester film, a nylon film, a polyethylene film and/or a polypropylene film.
The invention also provides the acrylic adhesive capable of deformation recovery prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
(1) the bonding between the molecular chains of the two materials is improved by crosslinking an acrylic adhesive in the presence of a styrene-isoprene-styrene elastomer. In a crosslinked acrylic adhesive/styrene-isoprene-styrene elastomer system, the styrene-isoprene-styrene elastomer can increase shear stress and shear strain.
(2) By strictly controlling the content of isocyanate in the amino resin of the cross-linking agent, the adhesive property and the deformation recovery rate of an acrylic adhesive/styrene-isoprene-styrene elastomer system can be improved, and the content of the cross-linking agent is also prevented from being too high, so that the acrylic adhesive/styrene-isoprene-styrene film becomes harder due to excessive cross-linking and cannot bear specific deformation due to the reduction of a plastic area.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
Uniformly mixing 80 parts by weight of acrylic acid adhesive and 20 parts by weight of styrene-isoprene-styrene elastomer by stirring/ultrasonic treatment to obtain a blend A;
adding 0.2 part by weight of amino resin into the blend A, wherein the content of isocyanate in the amino resin is 12.5%, and uniformly mixing through stirring/ultrasonic treatment to obtain a blend B;
coating the blend B on a polyester film, drying at 80 ℃ for 10 min, thermally crosslinking at 110 ℃ for 5 min, and thermally crosslinking at 70 ℃ for 12 h to prepare the acrylic-based adhesive with deformation recovery.
The acrylic-based adhesive of the embodiment is subjected to a performance test, and the maximum stress is 210 kPa, and the deformation recovery rate is 21%.
Example 2
Mixing 85 parts by weight of acrylic acid adhesive and 15 parts by weight of styrene-isoprene-styrene elastomer uniformly by stirring/ultrasonic treatment to obtain a blend A;
adding 0.4 part by weight of amino resin into the blend A, wherein the content of isocyanate in the amino resin is 12.8%, and uniformly mixing through stirring/ultrasonic treatment to obtain a blend B;
coating the blend B on a polyester film, drying at 80 ℃ for 10 min, thermally crosslinking at 110 ℃ for 5 min, and thermally crosslinking at 70 ℃ for 12 h to prepare the acrylic-based adhesive with deformation recovery.
The acrylic-based adhesive of the embodiment is subjected to a performance test, and the maximum stress is 365 kPa, and the deformation recovery rate is 45%.
Example 3
Uniformly mixing 90 parts by weight of acrylic acid adhesive and 10 parts by weight of styrene-isoprene-styrene elastomer through stirring/ultrasonic treatment to obtain a blend A;
adding 0.6 part by weight of amino resin into the blend A, wherein the content of isocyanate in the amino resin is 13.1%, and uniformly mixing through stirring/ultrasonic treatment to obtain a blend B;
coating the blend B on a polyester film, drying at 80 ℃ for 10 min, thermally crosslinking at 110 ℃ for 5 min, and thermally crosslinking at 70 ℃ for 12 h to prepare the acrylic-based adhesive with deformation recovery.
The acrylic-based adhesive of the embodiment is subjected to a performance test, and the maximum stress is 390 kPa, and the deformation recovery rate is 58%.
Example 4
Uniformly mixing 95 parts by weight of acrylic acid adhesive and 5 parts by weight of styrene-isoprene-styrene elastomer through stirring/ultrasonic treatment to obtain a blend A;
adding 0.8 part by weight of amino resin into the blend A, wherein the content of isocyanate in the amino resin is 13.3%, and uniformly mixing through stirring/ultrasonic treatment to obtain a blend B;
coating the blend B on a polyester film, drying at 80 ℃ for 10 min, thermally crosslinking at 110 ℃ for 5 min, and thermally crosslinking at 70 ℃ for 12 h to prepare the acrylic-based adhesive with deformation recovery.
The acrylic-based adhesive of the embodiment is subjected to a performance test, and the maximum stress is 418 kPa, and the deformation recovery rate is 67%.
Example 5
Uniformly mixing 95 parts by weight of acrylic acid adhesive and 5 parts by weight of styrene-isoprene-styrene elastomer through stirring/ultrasonic treatment to obtain a blend A;
adding 1.0 part by weight of amino resin into the blend A, wherein the content of isocyanate in the amino resin is 13.5%, and uniformly mixing through stirring/ultrasonic treatment to obtain a blend B;
coating the blend B on a polyester film, drying at 80 ℃ for 10 min, thermally crosslinking at 110 ℃ for 5 min, and thermally crosslinking at 70 ℃ for 12 h to prepare the acrylic-based adhesive with deformation recovery.
The acrylic-based adhesive of the embodiment is subjected to a performance test, and the maximum stress is 432 kPa, and the deformation recovery rate is 74%.
Comparative example 1
The difference from example 5 is that the acrylic-based adhesive prepared in this embodiment was tested for performance without adding styrene-isoprene-styrene elastomer and amino resin, and the maximum stress was 95 kPa and the deformation recovery was 16%.
Comparative example 2
The difference from example 1 is that the acrylic-based adhesive prepared in this embodiment was tested for performance without adding an amino resin, and the maximum stress was 150 kPa and the deformation recovery was 27%.
Comparative example 3
The difference from example 5 is that the acrylic-based adhesive prepared in this embodiment was subjected to a performance test without heat crosslinking, and the maximum stress was 134 kPa and the deformation recovery was 19%.
The acrylic-based adhesives obtained in comparative examples 1, 2 and 3 have lower maximum stress and lower strain recovery than those obtained by the embodiment of the invention according to any of examples 1 to 5. On the other hand, in the prior art, the product without the styrene-isoprene-styrene elastomer and the amino resin has the lowest maximum stress and the lowest deformation recovery rate compared with the acrylic-based adhesives prepared in examples 1 to 5 and comparative example 2. Comparative example 5 of the acrylic-based adhesive prepared in comparative example 3, which was not thermally crosslinked, shows that simply blending the acrylic adhesive and styrene-isoprene-styrene such that only weak physical bonds exist between them and thus the ability to recover deformation is limited, and in addition, strictly controlling the amount of the crosslinking agent to be used to be between 0.2 and 1.0 parts by weight also avoids the content of the crosslinking agent to be too high, so that the acrylic adhesive/styrene-isoprene-styrene film becomes harder due to excessive crosslinking and cannot withstand specific deformation due to the reduction of the plastic region.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The preparation method of the acrylic adhesive capable of deformation recovery is characterized by comprising the following steps:
uniformly mixing an acrylic acid adhesive and a styrene-isoprene-styrene elastomer to prepare a blend A;
adding a cross-linking agent into the blend A, and uniformly mixing to obtain a blend B;
and uniformly coating the blend B on a film, drying, and then heating for crosslinking to obtain the deformation recovery acrylic-based adhesive.
2. The method for preparing a shape-recoverable acrylic-based adhesive according to claim 1, wherein the mixing is performed by mechanical stirring and/or ultrasonic treatment.
3. The method for preparing the acrylic adhesive capable of deformation recovery as claimed in claim 1, wherein the acrylic adhesive is 80-95 parts by weight.
4. The method for preparing the acrylic-based adhesive capable of deformation recovery as claimed in claim 1, wherein the styrene-isoprene-styrene elastomer is 5 to 20 parts by weight.
5. The method of claim 1, wherein the cross-linking agent is an amino resin with an isocyanate content of 12.5% to 13.5%.
6. The method for preparing the acrylic-based adhesive capable of deformation recovery as claimed in claim 1, wherein the crosslinking agent is 0.2-1.0 part by weight.
7. The method for preparing the acrylic-based adhesive capable of shape change recovery as claimed in claim 1, wherein the drying temperature is 80 ℃ and the drying time is 10 min.
8. The method for preparing the acrylic-based adhesive capable of deformation recovery according to claim 1, wherein the heating crosslinking method comprises the following steps: thermal crosslinking is carried out for 5 min at 110 ℃ and then for 12 h at 70 ℃.
9. The method for preparing a shape-recoverable acrylic-based adhesive according to claim 1, wherein the film is any one of a polyester film, a nylon film, a polyethylene film and/or a polypropylene film.
10. An acrylic adhesive capable of shape recovery, which is prepared by the method according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110867927.5A CN113462323A (en) | 2021-07-30 | 2021-07-30 | Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110867927.5A CN113462323A (en) | 2021-07-30 | 2021-07-30 | Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113462323A true CN113462323A (en) | 2021-10-01 |
Family
ID=77883256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110867927.5A Pending CN113462323A (en) | 2021-07-30 | 2021-07-30 | Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113462323A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2415386A1 (en) * | 2000-08-11 | 2002-02-21 | 3M Innovative Properties Company | Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives |
| CN104603222A (en) * | 2012-08-16 | 2015-05-06 | 罗曼有限合资公司 | Adhesive agent having adhesive blend of acrylate and styrene block copolymer |
| CN112625623A (en) * | 2020-09-27 | 2021-04-09 | 新纶科技（常州）有限公司 | Adhesive for flexible display and flexible display assembly layer |
-
2021
- 2021-07-30 CN CN202110867927.5A patent/CN113462323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2415386A1 (en) * | 2000-08-11 | 2002-02-21 | 3M Innovative Properties Company | Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives |
| CN104603222A (en) * | 2012-08-16 | 2015-05-06 | 罗曼有限合资公司 | Adhesive agent having adhesive blend of acrylate and styrene block copolymer |
| CN112625623A (en) * | 2020-09-27 | 2021-04-09 | 新纶科技（常州）有限公司 | Adhesive for flexible display and flexible display assembly layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2018045213A (en) | Adhesive for flexible displays, adhesive sheet, flexible laminated member, and flexible display | |
| KR102633504B1 (en) | Pressure sensitive adhesive, curable pressure sensitive adhesive composition, pressure sensitive adhesive sheet and method for producing the same | |
| CN107459959B (en) | Boiling-resistant solvent-free adhesive for flexible package and preparation method thereof | |
| CN110093123B (en) | Adhesive sheet, method for producing same, and adhesive film | |
| TWI811242B (en) | Adhesive tape | |
| CN107109163A (en) | Adherence composition, sticker and adhesive sheet | |
| JP7017442B2 (en) | Temperature sensitive adhesive sheet and laminate | |
| JP6561647B2 (en) | Double-sided adhesive tape | |
| JP5531444B2 (en) | Reactive hot melt adhesive composition and method for producing the same | |
| CN113462323A (en) | Acrylic acid-based adhesive capable of deformation recovery and preparation method thereof | |
| TW202023809A (en) | Image display panel and image display device | |
| WO2022163638A1 (en) | Optical adhesive sheet for foldable device | |
| KR102139334B1 (en) | Acrylic adhesive composition modified silane | |
| CN116194544A (en) | Optical film with adhesive layer and image display device comprising same | |
| CN111138981A (en) | Ultra-high viscosity leakage-repairing black PET (polyethylene terephthalate) adhesive tape used underwater and preparation method thereof | |
| JP2006506476A (en) | Chemically inert contact pressure adhesive with improved adhesive properties and method of making the same | |
| WO2022163639A1 (en) | Optical adhesive sheet | |
| WO2024106486A1 (en) | Adhesive composition, adhesive sheet, optical multilayer body, and image display device | |
| TW202340417A (en) | Optical adhesive sheet | |
| JP2022070985A (en) | Pressure-sensitive adhesive sheet and method for producing the same and adhesive film | |
| CN116042128A (en) | Optical adhesive sheet with release liner | |
| CN116769419A (en) | Optical adhesive sheet | |
| JP2023047037A (en) | optical adhesive sheet | |
| TW202340413A (en) | Optical adhesive sheet | |
| CN116413948A (en) | Optical laminate |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211001 |