CN106833485B - Preparation method of liquid peelable adhesive for water-based metal surface protective film - Google Patents
Preparation method of liquid peelable adhesive for water-based metal surface protective film Download PDFInfo
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- CN106833485B CN106833485B CN201710027778.5A CN201710027778A CN106833485B CN 106833485 B CN106833485 B CN 106833485B CN 201710027778 A CN201710027778 A CN 201710027778A CN 106833485 B CN106833485 B CN 106833485B
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- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 239000000853 adhesive Substances 0.000 title claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 19
- 238000002360 preparation method Methods 0.000 title description 13
- 239000000839 emulsion Substances 0.000 claims abstract description 86
- 229920002635 polyurethane Polymers 0.000 claims abstract description 70
- 239000004814 polyurethane Substances 0.000 claims abstract description 70
- 239000003292 glue Substances 0.000 claims abstract description 32
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000002265 prevention Effects 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 230000009477 glass transition Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 32
- 239000002518 antifoaming agent Substances 0.000 claims description 22
- 239000002562 thickening agent Substances 0.000 claims description 22
- 239000000080 wetting agent Substances 0.000 claims description 20
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 3
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 claims description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- -1 alcohol ester Chemical class 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 230000003678 scratch resistant effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000004017 vitrification Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000007822 coupling agent Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a liquid peelable adhesive for an aqueous metal surface protective film, which comprises an aqueous polyurethane emulsion A and an aqueous polyurethane emulsion B, wherein the solid content of the aqueous polyurethane emulsion A is 34 +/-1%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the vitrification temperature is 10-30 ℃; the solid content of the aqueous polyurethane emulsion B is 35%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the glass transition temperature ranges from-10 ℃ to 20 ℃. The aqueous polyurethane emulsion A is HMP1011, and the aqueous polyurethane emulsion B is HMP 1501. The liquid peelable glue obtained by the method has the advantages of good transparency, low viscosity, convenient construction, good moisture resistance, low moisture permeability, high strength of a cured film body, scratch resistance, wear resistance, moderate adhesive strength with a base material, good peelability and rust prevention.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to a preparation method of a liquid peelable adhesive for an aqueous metal surface protective film.
Background
The strippable glue for the surface protection film is a special adhesive, and temporarily protects the surface of a product during transportation, storage, reprocessing and assembly after leaving a factory and before being used by a user so as to prevent mechanical scratches, abrasion, pollution, corrosion and the like. After the protection task is finished, the material can be easily and completely peeled off, and the material is not influenced. It features that besides proper adhesion and stripping to the protecting base, the protecting glue also has certain elasticity, strength and chemical resistance. The peelable glue can be applied to the surfaces of various materials such as metal, plastic, glass, wood and the like.
At present, the strippable adhesive for the domestic surface protection film is basically a non-setting adhesive type surface protection adhesive tape, and the preparation method comprises the steps of coating a layer of adhesive on the surface of a base material, drying, rolling and slitting to prepare the adhesive tape. The adhesive tape type peelable adhesive has the problems of non-transparency, higher cost, unsuitability for surface protection of workpieces with complex shapes and the like.
CN103421461A discloses a water-based paper-plastic laminating/peelable adhesive and a preparation method thereof. The paper-plastic laminating/peelable adhesive comprises, by mass, 35-45 parts of wax emulsion, 45-55 parts of aqueous polyurethane emulsion, 1-20 parts of tackifying resin, 1-5 parts of filler, 1-5 parts of coupling agent, 0.2-0.5 part of defoaming agent and 0.2-0.5 part of thickening agent. The wax emulsion is compounded with the waterborne polyurethane emulsion, the filler, the tackifying resin, the coupling agent, the thickening agent and the defoaming agent to prepare the waterborne paper-plastic laminating/peelable adhesive, the product has the characteristics of high temperature resistance, high initial adhesion, permanent adhesion and high peeling strength when the paper is compounded, the paper is not torn on a film bonding surface when the paper is separated from the plastic, the paper is not damaged, and the bonding surface is not sticky after the paper is separated from the plastic. But the moisture resistance, the scratch resistance and the abrasion resistance are poor, the transparency is low, and the method is not easy to adapt to parts with complex shapes.
CN103351833A discloses a method for preparing a liquid peelable glue for a surface protective film, which comprises the following steps: firstly, adding 30 parts of thermoplastic elastomer and 70 parts of solvent into a four-neck flask provided with a stirrer, a thermometer and a condenser, heating to 50-60 ℃, and stirring at the temperature until the thermoplastic elastomer is completely dissolved; then, adding 0.03-0.2 part of graft modifier, then adding 0.06-0.3 part of initiator, steadily heating to 70-90 ℃, and reacting for 9 hours at the temperature; and finally, cooling to room temperature, adding 5-10 parts of tackifying resin, 1-2 parts of coupling agent and 0.1-0.2 part of antioxidant, stirring until the materials are completely and uniformly mixed, and discharging. However, the peelable glue contains a large amount of solvent, and pollutes the environment.
Disclosure of Invention
In order to solve the defects of the adhesive tape type peelable glue and the solvent type peelable glue in the prior art, the invention aims to provide the liquid peelable glue which has the advantages of good transparency, low viscosity, convenient construction, good moisture resistance, low moisture permeability, high strength of a cured film body, scratch resistance, wear resistance, moderate adhesion strength with a base material, good peeling property, rust resistance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a liquid peelable glue for an aqueous metal surface protective film comprises an aqueous polyurethane emulsion A and an aqueous polyurethane emulsion B; wherein the mass ratio of the aqueous polyurethane emulsion A to the aqueous polyurethane emulsion B is (20-70) to (20-70).
Wherein the solid content of the aqueous polyurethane emulsion A is 34 +/-1%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the glass transition temperature is 10-30 ℃;
the solid content of the aqueous polyurethane emulsion B is 35%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the glass transition temperature ranges from-10 ℃ to 20 ℃.
Preferably, the aqueous polyurethane emulsion A is HMP1011, and the aqueous polyurethane emulsion B is HMP 1501. HMP1011 and HMP1501 are both available from Guangdong Shanghai Shun New Material science and technology Co.
Preferably, the liquid peelable glue further comprises a wetting agent, a leveling agent, a defoaming agent, a film forming aid, a thickening agent, an anti-flash rust aid and an anti-scratch and anti-wear agent; the wetting agent, the flatting agent, the defoaming agent, the film forming additive, the thickening agent, the flash rust prevention additive and the scratch and abrasion resistant agent account for 3-10% of the mass of the peelable glue;
wherein, the waterborne polyurethane emulsion A, the waterborne polyurethane emulsion B, the wetting agent, the flatting agent, the defoaming agent, the film-forming auxiliary agent,
The mass ratio of the thickening agent, the flash rust prevention auxiliary agent and the scratch-resistant wear-resistant agent is (20-70): 0.1-1):
(0.1-1):(4-8):(0.2-2):(0.5-2):(0.5-2)。
preferably, the wetting agent is BYK 345.
Preferably, the leveling agent is one or two of BYK-410 and BYK-359.
Preferably, the antifoaming agent is one or two of Tego902W, Tego1488, BYK-024.
Preferably, the film forming auxiliary agent is one or more of ethylene glycol butyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, propylene glycol phenyl ether and alcohol ester twelve.
Preferably, the thickener is one or more of RM2020, RM8W and hydroxyethyl cellulose.
Preferably, the flash rust prevention aid is one or two of Raybo70 and Raybo 60.
Preferably, the scratch and wear resistant agent is akuso CC 301.
The invention also provides a preparation method of the liquid peelable glue for the water-based metal surface protective film, which comprises the following steps:
(1) mixing the aqueous polyurethane emulsion A and the aqueous polyurethane emulsion B, adjusting the stirring speed to 650-750 r/min, and stirring at a high speed for 3-8 min;
(2) adding a wetting agent, a flatting agent, a defoaming agent, a film-forming assistant, a thickening agent, an anti-flash rust assistant and an anti-scraping wear-resisting agent into the aqueous polyurethane emulsion A and the aqueous polyurethane emulsion B under the stirring condition;
(3) and adjusting the stirring speed to 750 r/min-900 r/min, and stirring at a high speed for 50-95 min to obtain the liquid peelable adhesive for the water-based metal surface protective film.
The invention also provides the liquid peelable glue prepared by the preparation method.
Preferably, the liquid peelable glue obtained by the above preparation method is used for surface packaging of metal, plastic, glass, wood materials.
Has the advantages that:
(1) the liquid peelable glue obtained by the method has the advantages of good transparency, low viscosity, convenient construction, good moisture resistance, low moisture permeability, high strength of a cured film body, scratch resistance, wear resistance, moderate adhesive strength with a base material, good peelability, rust resistance and the like.
Detailed Description
The following further illustrates embodiments of the invention:
example 1
The peelable glue comprises the following components in parts by weight: 40 parts of aqueous polyurethane emulsion A (HMP1011), 40 parts of aqueous polyurethane emulsion B (HMP1501), 0.5 part of wetting agent (BYK345), 0.2 part of leveling agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 0.5 part of thickener (RM8W), 1 part of flash rust prevention aid (Raybo70) and 1 part of scratch and abrasion resistant agent (Akksu CC 301). Wherein the solid content of the aqueous polyurethane emulsion A (HMP1011) is 35 percent, the pH value is 8, the particle diameter of the emulsion is 150nm, and the glass transition temperature is 15 ℃. The solid content of the aqueous polyurethane emulsion B (HMP1501) is 35%, the pH value is 7.6, the particle size of the emulsion is 180nm, and the glass transition temperature is 0 ℃.
The preparation process comprises the following steps: 40 parts of the aqueous polyurethane emulsion A (HMP1011) and 40 parts of the aqueous polyurethane emulsion B (HMP1501) were mixed, and the mixture was stirred at a high speed of 700r/min for 5 min. To the aqueous polyurethane emulsion a (HMP1011) and the aqueous polyurethane emulsion B (HMP1501) were added, with stirring, 0.5 part of a wetting agent (BYK345), 0.2 part of a leveling agent (Tego410), 0.5 part of a defoaming agent (Tego1488), 5 parts of a film-forming aid (dipropylene glycol methyl ether), 0.5 part of a thickener (RM8W), 1 part of a flash rust preventive aid (Raybo70), and 1 part of a scratch and abrasion resistant agent (akuso CC 301). And adjusting the stirring speed to 800r/min, and stirring at a high speed for 50min to obtain the liquid peelable glue for the water-based metal surface protective film.
Example 2
The peelable glue comprises the following components in parts by weight: 55 parts of aqueous polyurethane emulsion A (HMP1011), 35 parts of aqueous polyurethane emulsion B (HMP1501), 0.5 part of wetting agent (BYK345), 0.2 part of leveling agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention aid (Raybo70), 0.5 part of scratch and wear resistant agent (Ackso CC301) and 1.3 parts of water. Wherein, the solid content of the aqueous polyurethane emulsion A (HMP1011) is 34 percent, the pH value is 7.8, the particle diameter of the emulsion is 150nm, and the glass transition temperature is 20 ℃. The solid content of the aqueous polyurethane emulsion B (HMP1501) is 35%, the pH value is 7.6, the particle size of the emulsion is 180nm, and the glass transition temperature is 10 ℃.
The preparation process comprises the following steps: 55 parts of the aqueous polyurethane emulsion A (HMP1011) and 35 parts of the aqueous polyurethane emulsion B (HMP1501) are mixed, the stirring speed is adjusted to 700r/min, and the mixture is stirred at a high speed for 5 min. Adding 0.5 part of wetting agent (BYK345), 0.2 part of flatting agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming additive (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention additive (Raybo70), 0.5 part of scratch and wear resistant agent (Acksu CC301) and 1.3 parts of water into aqueous polyurethane emulsion A (HMP1011) and aqueous polyurethane emulsion B (HMP1501) under stirring, adjusting the stirring speed to 800r/min, and stirring at high speed for 50min to obtain the aqueous peelable glue.
Example 3
The peelable glue comprises the following components in parts by weight: 40 parts of aqueous polyurethane emulsion A (HMP1011), 55 parts of aqueous polyurethane emulsion B (HMP1501), 0.5 part of wetting agent (BYK345), 0.2 part of leveling agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention aid (Raybo70), 0.5 part of scratch and wear resistant agent (Ackso CC301) and 1.3 parts of water. Wherein the solid content of the aqueous polyurethane emulsion A (HMP1011) is 33 percent, the pH value is 7.6, the particle diameter of the emulsion is 150nm, and the glass transition temperature is 17 ℃. The solid content of the aqueous polyurethane emulsion B (HMP1501) is 35%, the pH value is 7.8, the particle size of the emulsion is 190nm, and the glass transition temperature is 15 ℃.
The preparation process comprises the following steps: 40 parts of aqueous polyurethane emulsion A (HMP1011) and 55 parts of aqueous polyurethane emulsion B (HMP1501) are mixed, the stirring speed is adjusted to 700r/min, and the mixture is stirred at a high speed for 5 min. Adding 0.5 part of wetting agent (BYK345), 0.2 part of flatting agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming additive (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention additive (Raybo70), 0.5 part of scratch and abrasion resistant agent (Acksu CC301) and 1.3 parts of water into aqueous polyurethane emulsion A (HMP1011) and aqueous polyurethane emulsion B (HMP1501) under the stirring condition, adjusting the stirring speed to 800r/min, and stirring at a high speed for 50min to obtain the aqueous strippable glue.
Comparative example 1
In contrast to example 1, comparative example 1 contains no aqueous polyurethane emulsion a (HMP 1011).
The peelable glue comprises the following components in parts by weight: 40 parts of aqueous polyurethane emulsion B (HMP1501), 0.5 part of wetting agent (BYK345), 0.2 part of flatting agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 0.5 part of thickening agent (RM8W), 1 part of flash rust prevention aid (Raybo70) and 1 part of scratch and abrasion resistant agent (Ackso CC 301). Wherein the solid content of the aqueous polyurethane emulsion B (HMP1501) is 35 percent, the pH value is 7.6, the particle size of the emulsion is 180nm, and the glass transition temperature is 0 ℃.
The preparation process comprises the following steps: and (3) stirring 40 parts of the aqueous polyurethane emulsion B (HMP1501) at a high speed for 5min, and adjusting the stirring speed to 700 r/min. To the aqueous polyurethane emulsion B (HMP1501) were added, with stirring, 0.5 part of a wetting agent (BYK345), 0.2 part of a leveling agent (Tego410), 0.5 part of a defoaming agent (Tego1488), 5 parts of a film-forming aid (dipropylene glycol methyl ether), 0.5 part of a thickener (RM8W), 1 part of a flash rust preventive aid (Raybo70) and 1 part of a scratch and abrasion resistant agent (aksucc 301). And adjusting the stirring speed to 800r/min, and stirring at a high speed for 50min to obtain the liquid peelable glue for the water-based metal surface protective film.
Comparative example 2
In contrast to example 2, comparative example 1 contains no aqueous polyurethane emulsion B (HMP 1501).
The peelable glue comprises the following components in parts by weight: 55 parts of aqueous polyurethane emulsion A (HMP1011), 0.5 part of wetting agent (BYK345), 0.2 part of flatting agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention aid (Raybo70), 0.5 part of scratch and abrasion resistant agent (Ackso CC301) and 1.3 parts of water. Wherein the solid content of the aqueous polyurethane emulsion A (HMP1011) is 34 percent, the pH value is 7.8, the particle diameter of the emulsion is 150nm, and the glass transition temperature is 20 ℃.
The preparation process comprises the following steps: 55 parts of the aqueous polyurethane emulsion A (HMP1011) are stirred at a high speed for 5min, and the stirring speed is adjusted to 700 r/min. Adding 0.5 part of wetting agent (BYK345), 0.2 part of flatting agent (Tego410), 0.5 part of defoaming agent (Tego1488), 5 parts of film-forming aid (dipropylene glycol methyl ether), 1 part of thickening agent (RM2020), 1 part of flash rust prevention aid (Raybo70), 0.5 part of scratch and wear resistant agent (Acksotu CC301) and 1.3 parts of water into aqueous polyurethane emulsion A (HMP1011) under stirring, adjusting the stirring speed to 800r/min, and stirring at high speed for 50min to obtain the aqueous peelable glue.
The properties of the liquid peelable adhesive of the present invention were tested by the following tests:
the viscosity was tested according to GB/T2797-. Tensile strength was tested according to GB/T1040-92.
180 DEG peel strength was tested according to GB 7126-86.
Tensile strength was tested according to GB/T1040-92.
Water resistance was tested according to GB 1733-79 determination of Water resistance of paint films 88.
The breakage rate of paper was observed at 180 ° peel strength when the paper was separated from plastic.
The samples of examples 1, 2, 3 and comparative examples 1, 2 were subjected to performance tests, and the test results are shown in table 1.
TABLE 1 Performance test Table for samples of peelable adhesive prepared in examples and comparative examples
The experimental results in the table show that the liquid peelable adhesive prepared by the invention has low viscosity and good rust resistance, the adhesive film body formed by curing the liquid peelable adhesive has high strength, moderate adhesive strength with a base material and good peelability, and compared with a non-setting adhesive type surface protection adhesive tape, the liquid peelable adhesive can be more conveniently applied to temporary protection of the surfaces of various materials such as metal, plastic, glass, wood and the like.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (4)
1. The liquid peelable glue for the water-based metal surface protective film is characterized by comprising water-based polyurethane emulsion A and water-based polyurethane emulsion B; wherein the mass ratio of the aqueous polyurethane emulsion A to the aqueous polyurethane emulsion B is (20-70) to (20-70);
the solid content of the aqueous polyurethane emulsion A is 34 +/-1%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the glass transition temperature is 10-30 ℃;
the solid content of the aqueous polyurethane emulsion B is 35%, the pH value is 7.5-8, the particle size of the emulsion is less than or equal to 200nm, and the glass transition temperature ranges from-10 ℃ to 20 ℃;
the aqueous polyurethane emulsion A is HMP1011, and the aqueous polyurethane emulsion B is HMP 1501;
the liquid peelable glue also comprises a wetting agent, a leveling agent, a defoaming agent, a film forming auxiliary agent, a thickening agent, an anti-flash rust auxiliary agent and an anti-scraping wear-resisting agent; the wetting agent, the flatting agent, the defoaming agent, the film forming additive, the thickening agent, the flash rust prevention additive and the scratch and abrasion resistant agent account for 3-10% of the mass of the peelable glue;
wherein the mass ratio of the aqueous polyurethane emulsion A, the aqueous polyurethane emulsion B, the wetting agent, the flatting agent, the defoaming agent, the film-forming assistant, the thickening agent, the flash rust prevention assistant and the scratch and abrasion resistant agent is (20-70): 0.1-1): 4-8): 0.2-2): 0.5-2.
2. The liquid peelable glue of claim 1, wherein the wetting agent is BYK 345;
the leveling agent is one or two of BYK-410 and BYK-359;
the defoaming agent is one or two of Tego902W, Tego1488 and BYK-024;
the film-forming auxiliary agent is one or more of ethylene glycol butyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, propylene glycol phenyl ether and alcohol ester twelve;
the thickener is one or more of RM2020, RM8W and hydroxyethyl cellulose;
the flash rust prevention auxiliary agent is one or two of Raybo70 and Raybo 60;
the scratch-resistant and wear-resistant agent is Acksu CC 301.
3. The method for preparing the liquid peelable adhesive according to claim 1, wherein the method comprises the steps of:
(1) mixing the aqueous polyurethane emulsion A and the aqueous polyurethane emulsion B, adjusting the stirring speed to 650-750 r/min, and stirring at a high speed for 3-8 min;
(2) adding a wetting agent, a flatting agent, a defoaming agent, a film-forming assistant, a thickening agent, an anti-flash rust assistant and an anti-scraping wear-resisting agent into the aqueous polyurethane emulsion A and the aqueous polyurethane emulsion B under the stirring condition;
(3) and adjusting the stirring speed to 750 r/min-900 r/min, and stirring at a high speed for 50-95 min to obtain the liquid peelable adhesive for the water-based metal surface protective film.
4. Use of a peelable glue according to any of claims 1-2, wherein the liquid peelable glue is used for surface packaging of metal, plastic, glass, wood materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027778.5A CN106833485B (en) | 2017-01-16 | 2017-01-16 | Preparation method of liquid peelable adhesive for water-based metal surface protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415670A (en) * | 2002-10-09 | 2003-05-07 | 复旦大学 | Strippable protection paint |
| CN102816508A (en) * | 2012-09-15 | 2012-12-12 | 合肥华清金属表面处理有限责任公司 | Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment |
| CN104263233A (en) * | 2014-10-22 | 2015-01-07 | 江苏华夏制漆科技有限公司 | Temporary protection paint combination based on modified polyurethane and preparing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101245220A (en) * | 2007-02-16 | 2008-08-20 | 天津佳用水漆有限公司 | Polyurethane water paint |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415670A (en) * | 2002-10-09 | 2003-05-07 | 复旦大学 | Strippable protection paint |
| CN102816508A (en) * | 2012-09-15 | 2012-12-12 | 合肥华清金属表面处理有限责任公司 | Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment |
| CN104263233A (en) * | 2014-10-22 | 2015-01-07 | 江苏华夏制漆科技有限公司 | Temporary protection paint combination based on modified polyurethane and preparing method thereof |
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