CN111269643B - Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof - Google Patents
Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof Download PDFInfo
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- CN111269643B CN111269643B CN202010064573.6A CN202010064573A CN111269643B CN 111269643 B CN111269643 B CN 111269643B CN 202010064573 A CN202010064573 A CN 202010064573A CN 111269643 B CN111269643 B CN 111269643B
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- 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
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a water-based tearable film sol resin for vehicle paint protection, which comprises the following components in parts by weight: 50-70 parts of waterborne polyurethane resin; 5-15 parts of water-based acrylic emulsion; 5-15 parts of modified silica sol; 1-3 parts of a leveling thickener; 1-3 parts of wetting dispersant; 2-5 parts of a film-forming assistant; 1-3 parts of stripping accelerator; 0-1 part of a defoaming agent; 10-20 parts of water. The aqueous tearable film for protecting the vehicle paint has the characteristics of good toughness, high glossiness, transparency, wear resistance, excellent protective performance, adjustable adhesion, adjustable hardness and the like, can effectively prevent the damage caused by the rubbing of the vehicle paint, and is environment-friendly and pollution-free because the solvent is water.
Description
Technical Field
The invention relates to the technical field of vehicle paint film spraying, in particular to a water-based tearable film sol resin for vehicle paint protection and a preparation method and application thereof.
Background
In recent years, owing to the high-speed development of economy and the continuous improvement of road construction, the purchase quantity of automobiles in the past decade of China is continuously increased, but with the increase of the automobile keeping quantity, the problems of scratch and the abrasion and aging of original automobile paint in the using process of the automobiles are worried by most of automobile owners. The traditional spray paint used in the current maintenance market, the modes of film sticking of the whole vehicle and the like can not completely solve the pain points, and otherwise, the side effect of invading and corroding the original vehicle paint exists. The degumming, the chap generated under the ultraviolet irradiation and the residue generated in the replacement of the traditional full-vehicle film cause great troubles for the subsequent treatment.
Chinese patent with application number CN201610601250.X discloses an aqueous protective spray film, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is (3-8) to 12; the component A comprises the following substances in parts by weight: 30-40 parts of aliphatic polyester polyurethane and 60-70 parts of water; the component B comprises the following substances in parts by weight: 75-90 parts of modified waterborne polyurethane resin, 0.5-5 parts of auxiliary agent and 5-15 parts of water; the modified waterborne polyurethane is grafted and modified by a vinyl sulfur-containing compound. Although the protective film can be peeled off from the surface of the automobile, it is low in toughness and hardness.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the aqueous tearable film sol resin for the vehicle paint protection and the preparation method and the application thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows: a water-based tearable film sol resin for protecting vehicle paint comprises the following components in parts by weight:
preferably, the sol resin consists of the following components in parts by weight:
preferably, the aqueous acrylic emulsion is an acrylic copolymer dispersion; the aqueous polyurethane resin is an anionic aliphatic aqueous polyurethane dispersion.
Preferably, the modified silica sol is prepared by compounding a silane coupling agent and silica sol according to the weight ratio of 1: 18-22; the silane coupling agent is KH570 coupling agent.
Preferably, the leveling thickener is a hydrophobic group modified nonionic polyurethane associative leveling thickener and has double effects of thickening and leveling.
Preferably, the wetting and dispersing agent is a non-ionic surface-active wetting and dispersing agent.
Preferably, the film-forming aid is alcohol ester-12; the stripping accelerator is water-based silicone oil.
Preferably, the defoamer is a polysiloxane, or a copolymer of ethylene oxide and propylene oxide.
In a second aspect of the present invention, there is provided a method for preparing an aqueous peelable film sol resin for vehicle paint protection, comprising the steps of:
(1) adding the leveling thickener, the wetting dispersant, the film forming aid, the stripping accelerator, the defoaming agent and water into a dispersion machine according to corresponding proportions, and stirring for 10-15min at normal temperature;
(2) and sequentially adding the waterborne polyurethane resin, the waterborne acrylic emulsion and the modified silica sol into a dispersion machine according to the corresponding proportion, and continuously stirring at normal temperature for 30-40min to obtain the waterborne tearable film sol resin for the vehicle paint protection.
The third aspect of the invention also provides application of the aqueous tearable film sol resin, wherein the sol resin is uniformly sprayed on the vehicle paint by a spray gun, the vehicle paint is naturally dried for 8-12 minutes after being sprayed, then is baked at the baking temperature of 60-70 ℃ for 20-35 minutes, and multiple layers are sprayed according to requirements, so that the aqueous tearable film for vehicle paint protection is obtained.
The invention has the following characteristics: the aqueous tearable membrane sol prepared by the invention takes the aqueous polyurethane resin as a matrix, but the tearable membrane used for automobile protection has higher requirements on the toughness and hardness of the material, and the requirements cannot be met only by using the aqueous polyurethane resin. The invention adds the water-based acrylic emulsion into the components to increase the toughness of the film, the adding proportion of the water-based acrylic emulsion needs to be strictly controlled, the toughness is insufficient due to the addition of too little water-based acrylic emulsion, the adhesiveness of the film is increased due to the addition of too much water-based acrylic emulsion, and the film is difficult to be peeled from the automobile. In order to enhance the hardness of the sol resin, titanium dioxide, talcum powder, silica sol and other components are added into the components at the early stage, although the strength of the film can be enhanced, the phenomenon of layering or gelation can occur, and the problem of layering cannot be solved no matter how much dispersing agent is added at the later stage, so through research and exploration, the modified silica sol is added, the hardness of the film can be increased, and the problem of system layering can be solved. In addition, the amount of the modified silica sol to be added must be strictly controlled.
Compared with the prior art, the invention has the following beneficial effects: when the water-based tearable film sol resin provided by the invention is used for protecting the vehicle paint, the water-based tearable film sol resin has the excellent characteristics of high gloss, strong toughness, good film forming property, strong strippability, no damage to the primer, water-based environmental protection and no odor, and can be directly diluted by water. The paint is not limited by the shape and size, can well protect concave-convex surfaces, cambered surfaces and the like, and has good physical resistance and chemical resistance, water resistance, oil resistance, dirt resistance, scratch resistance, collision resistance and the like. The substrate is not damaged and no trace is left. The paint surface can not be damaged when the paint is covered on the paint and the coating.
Detailed Description
The technical solutions of the present invention are further described in detail with reference to specific embodiments, which are only used for explaining the present invention and are not used for limiting the present invention.
The waterborne polyurethane resin adopted in the following embodiment is an anionic aliphatic waterborne polyurethane dispersion purchased from Shenzhen Jitian chemical Limited company, the waterborne acrylic emulsion is an acrylic copolymer dispersion purchased from Shenzhen Jitian chemical Limited company, the leveling thickener is a hydrophobic group modified nonionic polyurethane associative leveling thickener purchased from Qianheng plasticizing raw material Limited company, the wetting dispersant is a nonionic surface active wetting dispersant purchased from Shenzhen Jitian chemical Limited company, the film-forming assistant is alcohol ester-12 purchased from Shenzhen Jitian chemical Limited company, the stripping promoting agent is a waterborne silicone oil purchased from Shenzhen Jitian chemical Limited company, and the defoaming agent is polysiloxane purchased from Shenzhen Jitian chemical Limited company.
The modified silica gel used in the following examples was prepared as follows: the silane coupling agent and the silica sol are compounded according to the weight ratio of 1: 20; the silane coupling agent is KH570 coupling agent.
Examples 1 to 6
The components and their weight percentages of examples 1-6 and comparative examples 1-2 are detailed in Table 1.
TABLE 1
The aqueous tearable film for vehicle paint protection in any of the examples and comparative examples described above was prepared by the following preparation method: and adding the leveling thickener, the wetting dispersant, the film forming aid, the stripping accelerator, the defoaming agent and water into a dispersion machine according to corresponding proportions, and stirring for 10-15 min.
And sequentially adding the waterborne polyurethane resin, the waterborne acrylic emulsion and the modified silica sol into the dispersion machine according to the corresponding proportion, and continuously stirring for 30-40min to obtain the waterborne tearable film sol resin for vehicle paint protection.
And (3) uniformly spraying the prepared sol resin on the vehicle paint by using a spray gun, naturally drying for 10min and then baking at the baking temperature of 60-70 ℃ for 20-30min after spraying, and spraying and protecting multiple layers according to requirements to obtain the water-based tearable film for protecting the vehicle paint.
The properties of the aqueous tear films for vehicle paint protection prepared in examples 1 to 6 and comparative examples 1 to 2 are shown in table 2.
TABLE 2
Note: hardness 2H > HB
As can be seen from Table 2, the tear films of examples 1-6 and comparative examples 1-2 all achieved the desired impact resistance, flexibility, oil and water resistance, but there were large differences in open time, film appearance, hardness and peelability. The prepared water-based tearable film for vehicle paint protection is required to have the advantages of relatively fast surface drying time, relatively high hardness, transparent and glossy appearance and relatively good tearability. The modified silica sol can improve the hardness of the tear film, and the aqueous acrylic emulsion can improve the impact resistance and flexibility of the tear film, but can increase the surface drying time of the tear film and reduce the transparency of the tear film, so that the effect of example 4 is the best.
Comparative example 3
If the modified silica sol in the embodiment 4 is replaced by titanium dioxide, the hardness of the tearable film can be improved, but the process requirement is more complicated, and the method described by the invention can cause the delamination phenomenon caused by uneven dispersion and reduce the transparency of the tearable film.
Comparative example 4
If the modified silica sol in example 4 is replaced with a silica sol, a gel phenomenon occurs due to compatibility problems of the silica sol and the aqueous urethane resin.
Claims (5)
1. The water-based tearable film sol resin for vehicle paint protection is characterized by comprising the following components in parts by weight:
the water-based acrylic emulsion is an acrylic copolymer dispersoid; the aqueous polyurethane resin is an anionic aliphatic aqueous polyurethane dispersion; the film-forming additive is alcohol ester-12; the stripping accelerator is water-based silicone oil;
the modified silica sol is prepared by compounding a silane coupling agent and silica sol according to the weight ratio of 1: 18-22; the silane coupling agent is KH 570;
the preparation method of the aqueous tear-off film sol resin comprises the following steps:
(1) adding the leveling thickener, the wetting dispersant, the film forming aid, the stripping accelerator, the defoaming agent and water into a dispersion machine according to corresponding proportions, and stirring for 10-15min at normal temperature;
(2) and sequentially adding the waterborne polyurethane resin, the waterborne acrylic emulsion and the modified silica sol into a dispersion machine according to the corresponding proportion, and continuously stirring at normal temperature for 30-40min to obtain the waterborne tearable film sol resin for the vehicle paint protection.
2. The aqueous tearable film sol resin for automotive paint protection according to claim 1, wherein the leveling thickener is a nonionic polyurethane associative leveling thickener modified with a hydrophobic group.
3. The aqueous tear-off sol resin for the protection of automotive paints according to claim 1, characterized in that the wetting dispersant is a non-ionic surface-active wetting dispersant.
4. The aqueous tear-off sol resin for vehicle paint protection according to claim 1, wherein the defoamer is a polysiloxane or a copolymer of ethylene oxide and propylene oxide.
5. The application of the aqueous tearable film sol resin according to any one of claims 1 to 4, wherein the sol resin is uniformly sprayed on the car paint by a spray gun, and naturally dried for 8 to 12 minutes after spraying, and then baked at 60 to 70 ℃ for 20 to 35 minutes, and multiple layers are sprayed according to requirements to obtain the aqueous tearable film for car paint protection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010064573.6A CN111269643B (en) | 2020-01-20 | 2020-01-20 | Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof |
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| CN202010064573.6A CN111269643B (en) | 2020-01-20 | 2020-01-20 | Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof |
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| CN111269643B true CN111269643B (en) | 2021-09-21 |
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| CN113621337A (en) * | 2021-09-06 | 2021-11-09 | 广州亦盛环保科技有限公司 | Low-temperature thermosetting water-based peelable adhesive and preparation method thereof |
| CN115558388B (en) * | 2021-12-30 | 2023-09-08 | 量镀（上海）新材料科技股份有限公司 | Original vehicle paint grade automobile color-changing material based on protective base material and use method thereof |
| CN114530275B (en) * | 2022-04-22 | 2022-07-08 | 西安宏星电子浆料科技股份有限公司 | Environment-friendly organic gold conductor slurry |
| CN115403981B (en) * | 2022-10-10 | 2023-08-29 | 长沙岱华科技有限公司 | Water-based protective adhesive and preparation method thereof |
| CN115651520B (en) * | 2022-11-02 | 2023-09-08 | 深圳市深赛尔股份有限公司 | High-hardness high-wear-resistance quick-drying water-based automotive topcoat and preparation method thereof |
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| JP2001234124A (en) * | 2000-02-24 | 2001-08-28 | Seiji Kagawa | Gas barrier coating material, method for manufacturing gas barrier coating material, gas barrier film, method for manufacturing gas barrier film, laminate film for easy-to-tear packaging material and laminate film for liquid food package material |
| CN105176356A (en) * | 2015-10-20 | 2015-12-23 | 苏州赛斯德工程设备有限公司 | Waterborne strippable anticorrosive coating and preparation method thereof |
| CN107974156A (en) * | 2017-11-24 | 2018-05-01 | 黄禹 | A kind of environment-friendly water-based stripping lacquer of automobile using and its preparation method and application |
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- 2020-01-20 CN CN202010064573.6A patent/CN111269643B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001234124A (en) * | 2000-02-24 | 2001-08-28 | Seiji Kagawa | Gas barrier coating material, method for manufacturing gas barrier coating material, gas barrier film, method for manufacturing gas barrier film, laminate film for easy-to-tear packaging material and laminate film for liquid food package material |
| CN105176356A (en) * | 2015-10-20 | 2015-12-23 | 苏州赛斯德工程设备有限公司 | Waterborne strippable anticorrosive coating and preparation method thereof |
| CN107974156A (en) * | 2017-11-24 | 2018-05-01 | 黄禹 | A kind of environment-friendly water-based stripping lacquer of automobile using and its preparation method and application |
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