CN111675977A - Degradable hydrosol protective adhesive film - Google Patents
Degradable hydrosol protective adhesive film Download PDFInfo
- Publication number
- CN111675977A CN111675977A CN202010424460.2A CN202010424460A CN111675977A CN 111675977 A CN111675977 A CN 111675977A CN 202010424460 A CN202010424460 A CN 202010424460A CN 111675977 A CN111675977 A CN 111675977A
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- CN
- China
- Prior art keywords
- hydrosol
- degradable
- film
- emulsifier
- adhesive film
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Classifications
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
- C09J133/24—Homopolymers or copolymers of amides or imides
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Abstract
The invention discloses a degradable hydrosol protective adhesive film, which comprises: the degradable film, the hydrosol layer and the release film; the preparation method of the hydrosol comprises the following steps: uniformly mixing the emulsifier A and an acrylic monomer in water to obtain a pre-emulsion; uniformly mixing itaconic acid, an initiator and an emulsifier B in water, and then adjusting the pH value to 5-5.5 to obtain a mixed solution; and then dropwise adding the mixed solution into the pre-emulsion for polymerization reaction, and then adjusting the solid content to obtain the hydrosol. The invention has good adhesion, long-lasting adhesive force, heat resistance and aging resistance, and is biodegradable.
Description
Technical Field
The invention relates to the technical field of adhesive tapes, in particular to a degradable hydrosol protective adhesive film.
Background
In the manufacturing process of numerous digital electronic products, one or more layers of protective adhesive films are required to be attached to avoid the problems of surface pollution, scratch, bruise and the like caused in the production process of the products. At present, most of the existing protective adhesive films in the market are obtained by using plastics such as PET, PE, PI and the like as base material films, then coating oily pressure-sensitive adhesive on the surfaces of the base material films, and then pasting release films. The protective adhesive film can not be degraded and can become a source of white pollution, thereby causing environmental pollution.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a degradable hydrosol protective adhesive film which has good adhesion, long-lasting adhesive force, heat resistance and aging resistance and is biodegradable.
The invention provides a degradable hydrosol protective adhesive film, which comprises: the degradable film, the hydrosol layer and the release film;
the preparation method of the hydrosol comprises the following steps: uniformly mixing the emulsifier A and an acrylic monomer in water to obtain a pre-emulsion; uniformly mixing itaconic acid, an initiator and an emulsifier B in water, and then adjusting the pH value to 5-5.5 to obtain a mixed solution; and then dropwise adding the mixed solution into the pre-emulsion for polymerization reaction, and then adjusting the solid content to obtain the hydrosol.
Preferably, the acrylic monomer is butyl acrylate, isooctyl acrylate, methyl methacrylate, N-methylolacrylamide, glycidyl methacrylate.
Preferably, the weight ratio of the butyl acrylate, the isooctyl acrylate, the methyl methacrylate, the N-hydroxymethyl acrylamide and the glycidyl methacrylate is 48-52:28-32:11-13:1-2: 3-4.
Preferably, the weight ratio of the acrylic monomer to the itaconic acid to the initiator to the emulsifier A to the emulsifier B is 100:3.5-4.5:0.5-0.7:1-1.5: 1.5-2.
Preferably, emulsifier a is sodium lauryl sulfate.
Preferably, emulsifier B is emulsifier A-268.
Preferably, the initiator is potassium persulfate.
Preferably, the pH is adjusted with sodium bicarbonate.
Preferably, the solids content of the hydrosol is 50-55%.
Preferably, the polymerization temperature is 70-80 ℃ and the reaction time is 6.5-7.5 h.
Preferably, the mixed solution is added dropwise over 1h, and stirring is continued.
Preferably, the polymerization reaction is continued with stirring.
Preferably, the degradable film is a PBAT resin film.
The preparation method of the degradable hydrosol protective adhesive film comprises the following steps: coating at least one layer of hydrosol on the surface of the degradable film to obtain a hydrosol layer, and then attaching a release film on the surface of the hydrosol layer to obtain the biodegradable film, wherein the thickness of the hydrosol layer is 5-125 mu m.
Preparing a degradable hydrosol protective adhesive film in a thousand-stage dust-free chamber; the relative humidity at the time of application of the hydrosol was < 55%.
When coating hydrosols of different layers, the adhesive force, initial holding force and holding force of the obtained degradable hydrosol protective adhesive film are different, so that the degradable hydrosol protective adhesive film can be applied to the surfaces of different materials.
The thickness of the degradable hydrosol protective adhesive film can be 0.06mm, 0.085mm and the like.
The PBAT resin is a copolymer of butylene adipate and butylene terephthalate, and has excellent biodegradability.
According to the invention, butyl acrylate and isooctyl acrylate are selected as soft monomers, methyl methacrylate is selected as a hard monomer, and a proper proportion of the soft and hard monomers is selected, so that the hydrosol has good adhesion and adhesive force durability, and the hydrosol has good cohesive strength; in addition, a proper amount of glycidyl methacrylate, itaconic acid and internal crosslinking agent N-hydroxymethyl acrylamide are added for modification, so that the cohesive strength and the adhesive force of the hydrosol are further increased, the heat resistance and the aging resistance of the hydrosol can be improved, and a proper amount of itaconic acid is introduced, so that the hydrosol is easy to degrade, and the environmental pollution is reduced; the hydrosol does not contain a solvent and does not emit toxic gas; the invention selects proper emulsifier to further improve the cohesive strength and adhesive force of the hydrosol; the PBAT resin is selected as the base material film of the hydrosol, can be biodegraded, and cannot pollute the environment.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A degradable hydrosol protective adhesive film comprises: PBAT resin film, hydrosol layer and release film;
the preparation method of the hydrosol comprises the following steps: uniformly mixing 1g of sodium dodecyl sulfate and 100g of acrylic acid monomer in water to obtain a pre-emulsion; uniformly mixing itaconic acid 4.5g, potassium persulfate 0.5g and emulsifier A-268 2g in water, and then adjusting the pH value to 5 by sodium bicarbonate to obtain a mixed solution; and then dripping the mixed solution into the pre-emulsion within 1h, carrying out polymerization reaction for 6.5h at the temperature of 80 ℃, continuously stirring during dripping and reaction, and then adjusting the solid content to 55% to obtain the hydrosol, wherein the acrylic monomers comprise butyl acrylate, isooctyl acrylate, methyl methacrylate, N-hydroxymethyl acrylamide and glycidyl methacrylate, and the weight ratio of the butyl acrylate, the isooctyl acrylate, the methyl methacrylate, the N-hydroxymethyl acrylamide and the glycidyl methacrylate is 48:32:11:2: 3.
Example 2
A degradable hydrosol protective adhesive film comprises: PBAT resin film, hydrosol layer and release film;
the preparation method of the hydrosol comprises the following steps: uniformly mixing 1.5g of sodium dodecyl sulfate and 100g of acrylic acid monomer in water to obtain a pre-emulsion; uniformly mixing 3.5g of itaconic acid, 0.7g of potassium persulfate and 1.5g of emulsifier A-268 in water, and then adjusting the pH value to 5.5 by sodium bicarbonate to obtain a mixed solution; and then dripping the mixed solution into the pre-emulsion within 1h, carrying out polymerization reaction for 7.5h at 70 ℃, continuously stirring during dripping and reaction, and then adjusting the solid content to 50% to obtain the hydrosol, wherein the acrylic monomers comprise butyl acrylate, isooctyl acrylate, methyl methacrylate, N-hydroxymethyl acrylamide and glycidyl methacrylate, and the weight ratio of the butyl acrylate, the isooctyl acrylate, the methyl methacrylate, the N-hydroxymethyl acrylamide and the glycidyl methacrylate is 52:28:13:1: 4.
Example 3
A degradable hydrosol protective adhesive film comprises: PBAT resin film, hydrosol layer and release film;
the preparation method of the hydrosol comprises the following steps: uniformly mixing 1.3g of sodium dodecyl sulfate and 100g of acrylic acid monomer in water to obtain a pre-emulsion; uniformly mixing 4g of itaconic acid, 0.6g of potassium persulfate and 1.7g of emulsifier A-268 in water, and then adjusting the pH value to 5 by using sodium bicarbonate to obtain a mixed solution; and then, within 1h, dropwise adding the mixed solution into the pre-emulsion, carrying out polymerization reaction for 7h at 75 ℃, continuously stirring during the dropwise adding and the reaction, and then adjusting the solid content to 52% to obtain the hydrosol, wherein the acrylic monomers comprise butyl acrylate, isooctyl acrylate, methyl methacrylate, N-hydroxymethyl acrylamide and glycidyl methacrylate, and the weight ratio of the butyl acrylate, the isooctyl acrylate, the methyl methacrylate, the N-hydroxymethyl acrylamide and the glycidyl methacrylate is 50:30:12:2: 4.
Test examples
And (3) respectively taking the hydrosols prepared in the embodiments 1-3, coating the hydrosol with the thickness of 10 microns on one surface of the PBAT resin film, and then attaching a release film on the surface of the hydrosol to obtain the degradable hydrosol protective adhesive film.
The performance of each degradable hydrosol protective adhesive film was tested, and the results are shown in the following table, using commercially available protective adhesive films as a control group:
remarking: the method for detecting the peel strength refers to GB _ T2792-1998; the method for measuring the holding force is described in GB _ T4851-1998; the method for detecting the residual glue refers to GB _ T2792-1998.
As can be seen from the results in the table above, the present invention has good adhesiveness, durability, and cohesive strength, and is biodegradable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A degradable hydrosol protective adhesive film is characterized by comprising: the degradable film, the hydrosol layer and the release film;
the preparation method of the hydrosol comprises the following steps: uniformly mixing the emulsifier A and an acrylic monomer in water to obtain a pre-emulsion; uniformly mixing itaconic acid, an initiator and an emulsifier B in water, and then adjusting the pH value to 5-5.5 to obtain a mixed solution; and then dropwise adding the mixed solution into the pre-emulsion for polymerization reaction, and then adjusting the solid content to obtain the hydrosol.
2. The degradable hydrosol protective adhesive film of claim 1, wherein the acrylic acid monomer is butyl acrylate, isooctyl acrylate, methyl methacrylate, N-methylol acrylamide, glycidyl methacrylate; preferably, the weight ratio of the butyl acrylate, the isooctyl acrylate, the methyl methacrylate, the N-hydroxymethyl acrylamide and the glycidyl methacrylate is 48-52:28-32:11-13:1-2: 3-4.
3. The protective adhesive film of degradable hydrosol according to claim 1 or 2, wherein the weight ratio of acrylic acid monomer, itaconic acid, initiator, emulsifier A and emulsifier B is 100:3.5-4.5:0.5-0.7:1-1.5: 1.5-2.
4. The protective film for degradable hydrosol according to any one of claims 1 to 3, wherein the emulsifier A is sodium dodecyl sulfate; preferably, emulsifier B is emulsifier A-268.
5. The degradable hydrosol protective film according to any one of claims 1 to 4, wherein the initiator is potassium persulfate.
6. The protective film for degradable hydrosol according to any one of claims 1 to 5, wherein the pH is adjusted by sodium bicarbonate.
7. The protective film of degradable hydrosol according to any one of claims 1 to 6, wherein the hydrosol has a solid content of 50 to 55%.
8. The protective adhesive film of degradable hydrosol according to any one of claims 1 to 7, wherein the temperature of the polymerization reaction is 70 to 80 ℃ and the reaction time is 6.5 to 7.5 hours.
9. The protective adhesive film for degradable hydrosol according to any one of claims 1 to 8, wherein the mixed solution is added dropwise within 1 hour and is continuously stirred; preferably, the polymerization reaction is continued with stirring.
10. The protective adhesive film of degradable hydrosol according to any one of claims 1 to 9, wherein the degradable film is a PBAT resin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424460.2A CN111675977A (en) | 2020-05-19 | 2020-05-19 | Degradable hydrosol protective adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424460.2A CN111675977A (en) | 2020-05-19 | 2020-05-19 | Degradable hydrosol protective adhesive film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111675977A true CN111675977A (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010424460.2A Pending CN111675977A (en) | 2020-05-19 | 2020-05-19 | Degradable hydrosol protective adhesive film |
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| CN (1) | CN111675977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538321A (en) * | 2020-12-09 | 2021-03-23 | 联泓(江苏)新材料研究院有限公司 | Degradable self-adhesive film material and preparation method and application thereof |
Citations (3)
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| CN104710951A (en) * | 2015-04-08 | 2015-06-17 | 潍坊胜达科技股份有限公司 | High-temperature-resistance and unimpressed pressure sensitive adhesive (PSA) for polyethylene protective film, preparation method thereof and prepared polyethylene protective film |
| CN106459694A (en) * | 2014-06-11 | 2017-02-22 | 德莎欧洲公司 | Adhesive tape for protecting surfaces |
| CN107602760A (en) * | 2017-08-07 | 2018-01-19 | 无锡海特新材料研究院有限公司 | A kind of electronic protective film pressure-sensitive polyacrylate emulsion glue, its preparation method and its application |
-
2020
- 2020-05-19 CN CN202010424460.2A patent/CN111675977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106459694A (en) * | 2014-06-11 | 2017-02-22 | 德莎欧洲公司 | Adhesive tape for protecting surfaces |
| CN104710951A (en) * | 2015-04-08 | 2015-06-17 | 潍坊胜达科技股份有限公司 | High-temperature-resistance and unimpressed pressure sensitive adhesive (PSA) for polyethylene protective film, preparation method thereof and prepared polyethylene protective film |
| CN107602760A (en) * | 2017-08-07 | 2018-01-19 | 无锡海特新材料研究院有限公司 | A kind of electronic protective film pressure-sensitive polyacrylate emulsion glue, its preparation method and its application |
Non-Patent Citations (1)
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| 许丛芳等: "聚丙烯酸酯浆料的共混特性与生物降解性", 《棉纺织技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112538321A (en) * | 2020-12-09 | 2021-03-23 | 联泓(江苏)新材料研究院有限公司 | Degradable self-adhesive film material and preparation method and application thereof |
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Application publication date: 20200918 |