阅读说明：本技术 一种耐指纹抗菌的pcm板及其制作方法 (Fingerprint-resistant antibacterial PCM plate and manufacturing method thereof ) 是由 龚锡华 吴少华 赵军强 于 2021-06-18 设计创作，主要内容包括：本发明提供一种耐指纹抗菌的PCM板及其制作方法,从上至下依次包括保护膜、耐指纹面漆层、底漆层、第一化学处理层、第二化学处理层、金属基板、第一化学处理层、背漆层；所述保护膜为三层结构,三层结构由上至下包括第一膜层、第二膜层和第三膜层；所述第一膜层为烃基化水性环氧树脂漆层；所述第二膜层为抗菌热塑性丙烯酸树脂漆层；所述第三膜层为聚乙烯膜本体。本发明涉及一种耐指纹抗菌的PCM板,该板材表面所贴覆的保护膜为三层结构,可有效的防止外界的污水或操作人员手上的汗渍附着在PCM板上,既可保证PCM板的使用性能,又因其表面的疏水性质特性防止汗渍指纹等附着在PCM板材的表面。(The invention provides a fingerprint-resistant antibacterial PCM plate and a manufacturing method thereof, and the fingerprint-resistant antibacterial PCM plate sequentially comprises a protective film, a fingerprint-resistant finish paint layer, a primer layer, a first chemical treatment layer, a second chemical treatment layer, a metal substrate, a first chemical treatment layer and a back paint layer from top to bottom; the protective film is of a three-layer structure, and the three-layer structure comprises a first film layer, a second film layer and a third film layer from top to bottom; the first film layer is a hydrocarbylation water-based epoxy resin paint layer; the second film layer is an antibacterial thermoplastic acrylic resin paint layer; the third film layer is a polyethylene film body. The invention relates to a fingerprint-resistant antibacterial PCM plate, wherein a protective film pasted on the surface of the plate is of a three-layer structure, so that external sewage or sweat stains on hands of operators can be effectively prevented from being attached to the PCM plate, the service performance of the PCM plate can be ensured, and sweat stains, fingerprints and the like can be prevented from being attached to the surface of the PCM plate due to the hydrophobic property of the surface of the PCM plate.)

1. A antibiotic PCM board of resistant fingerprint which characterized in that:

the anti-fingerprint anti-fake coating sequentially comprises a protective film, a fingerprint-resistant finish paint layer (4), a primer layer (6), a first chemical treatment layer (7), a second chemical treatment layer (8), a metal substrate (9), a first chemical treatment layer (7) and a back paint layer (10) from top to bottom;

the protective film is of a three-layer structure, and the three-layer structure comprises a first film layer (1), a second film layer (2) and a third film layer (3) from top to bottom;

the first film layer (1) is a hydrocarbylation water-based epoxy resin paint layer;

the second film layer (2) is an antibacterial thermoplastic acrylic resin paint layer;

the third film layer (3) is a polyethylene film body.

2. The fingerprint-resistant antibacterial PCM board according to claim 1, characterized in that the first film layer (1) is made of hydrocarbon-based water-based epoxy resin paint by the following method: dissolving aliphatic hydroxyl compound into the waterborne epoxy resin under alkaline condition, heating to 80-90 ℃ for full reaction, vacuum drying and crushing to obtain the hydroxylated waterborne epoxy resin powder.

3. The fingerprint resistant and antibacterial PCM board according to claim 2, characterized in that: the aliphatic hydroxyl compound is one of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol and 1, 5-pentanediol.

4. The fingerprint resistant and antibacterial PCM board according to claim 1, characterized in that: the manufacturing method of the second film layer (2) antibacterial thermoplastic acrylic resin paint comprises the following steps: and mixing the thermoplastic acrylic resin and the nanoscale antibacterial substance, and uniformly stirring to obtain the antibacterial thermoplastic acrylic resin paint.

5. The fingerprint resistant and antibacterial PCM board according to claim 4, characterized in that: the nano-scale antibacterial substance is one or more of silver and zinc oxide.

6. The fingerprint resistant and antibacterial PCM board according to claim 1, characterized in that: the thickness of the fingerprint-resistant finish paint layer (4) is within the range of 10-15 mu m, and the fingerprint-resistant finish paint layer (4) is unsaturated polyester resin paint added with microcapsule antibacterial particles (5).

7. The fingerprint resistant and antibacterial PCM board according to claim 1, characterized in that: the thickness of the primer layer (6) is in the range of 10-15 mu m, and the primer layer (6) is one of unsaturated polyester resin paint, saturated polyester resin paint and terephthalic acid polyester resin paint.

8. A manufacturing method of a fingerprint-resistant antibacterial PCM plate is characterized by comprising the following steps:

s1, preprocessing a metal substrate (9): sequentially carrying out alkali washing degreasing, water washing and drying operations on the metal substrate (9);

s2, coating a front paint layer on the metal substrate (9) processed in the step S1: sequentially coating a second chemical treatment layer (8), a first chemical treatment layer (7), a primer layer (6) and a fingerprint-resistant finish paint layer (4) on the front surface of a metal substrate (9), and then drying and curing;

s3, coating a back paint layer on the metal substrate (9) processed in the step S2: sequentially coating a first chemical treatment layer (7) and a back paint layer (10) on the back surface of the metal substrate (9), and then drying and curing;

s4, pre-manufacturing a protective film: sequentially spraying an antibacterial thermoplastic acrylic resin paint layer and an alkylated aqueous epoxy resin paint layer on the polyethylene film body to form a protective film with a three-layer structure;

s5, attaching the protective film prepared in the step S4 to the metal substrate (9) processed in the step S3.

9. The method for manufacturing a fingerprint resistant antibacterial PCM board according to claim 8, wherein said step S2 includes:

s21, spraying phosphating solution on the front surface of the metal substrate (9) to form a second chemical treatment layer (8);

s22, spraying passivation solution on the second chemical treatment layer (8) to form a first chemical treatment layer (7);

s23, spraying polyester resin paint on the first chemical treatment layer (7) to form a primer layer (6);

s24, spraying a fingerprint-resistant finish paint layer (4) mixed with microcapsule antibacterial particles (5) on the primer layer (6);

s25, drying and curing the metal substrate (9) processed in the step S24 within the temperature range of 310-370 ℃, wherein the curing time is 50-65S.

10. The method for manufacturing a fingerprint resistant antibacterial PCM board according to claim 8, wherein said step S3 includes:

s31, spraying passivation solution on the back surface of the metal substrate (9) to form a first chemical treatment layer (7);

s32, spraying a back paint layer (10) below the first chemical treatment layer (7);

s33, drying and curing the metal substrate (9) processed in the step S32 within the temperature range of 210-270 ℃, wherein the curing time is 15-25S.

Technical Field

The invention discloses a fingerprint-resistant antibacterial PCM plate and a manufacturing method thereof, and belongs to the technical field of PCM plates.

Background

PCM boards are widely used in industry and life, and are required for automobiles, refrigerators, washing machines, industrial and civil buildings, and the like. Most of the existing PCM plates can be used as formal products only after a protective layer and a decorative layer are coated on the surfaces of the PCM plates, but most of the PCM plates are not resistant to bacteria, and the surfaces of the PCM plates are polluted under the condition of being frequently contacted by operators, so that the use occasions and the service lives of the PCM plates are limited.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a fingerprint-resistant antibacterial PCM plate and a manufacturing method thereof, so as to solve the problems in the background technology.

In order to achieve the above object, the present invention is achieved by the following technical solutions, including:

a fingerprint-resistant antibacterial PCM plate sequentially comprises a protective film, a fingerprint-resistant finish paint layer, a primer layer, a first chemical treatment layer, a second chemical treatment layer, a metal substrate, a first chemical treatment layer and a back paint layer from top to bottom; the protective film is of a three-layer structure, and the three-layer structure comprises a first film layer, a second film layer and a third film layer from top to bottom; the first film layer is a hydrocarbylation water-based epoxy resin paint layer; the second film layer is an antibacterial thermoplastic acrylic resin paint layer; the third film layer is a polyethylene film body.

Preferably, the preparation method of the first film layer alkylation water-based epoxy resin paint comprises the following steps: dissolving aliphatic hydroxyl compound into the waterborne epoxy resin under alkaline condition, heating to 80-90 ℃ for full reaction, vacuum drying and crushing to obtain hydrocarbylation waterborne epoxy resin powder; the waterborne epoxy resin is used as a high molecular polymer and uniformly provided with alkyl groups, the alkyl groups are used as hydrophobic groups to prevent the waterborne epoxy resin from dissolving in water to prevent the alkyl groups from migrating to water molecules, and the first film layer is internally provided with carbon chains and alkyl groups with sufficient length, so that the waterborne epoxy resin has the hydrophobic chains with sufficient length and certain hydrophobicity, and can have a certain effect of preventing water stains as the first layer of the protective film and the first layer of the whole PCM plate; the hydrocarbon group is a typical nonpolar group, the solubility in water is poor, and meanwhile, since the hydrocarbon group hardly forms electric charges, external water molecules are also hardly attached to the hydrocarbon group to form hydrated ions, so that the protective film is hardly dissolved by the water molecules; the hydrophobic and waterproof advantages of the alkylated aqueous epoxy resin are combined together, the alkylated aqueous epoxy resin is used for preparing a paint layer raw material of the first film layer, so that the surface of the PCM plate is covered by a layer of alkylated nonpolar hydrocarbon chain, thereby leading the water phase to be difficult to invade and attach to the surface of the PCM plate, leading the PCM plate to have the advantages of difficult pollution and waterproofness by aqueous stains, and simultaneously, the alkylated aqueous epoxy resin has lower reactivity compared with the common aqueous epoxy resin because the reactivity of the alkyl group is arranged at a lower position in each functional group, so the surface of the PCM plate is more difficult to corrode by the external environment, and the service life of the alkylated aqueous epoxy resin is longer.

Preferably, the aliphatic hydroxyl compound is one of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol and 1, 5-pentanediol.

Preferably, the preparation method of the second film layer antibacterial thermoplastic acrylic resin paint comprises the following steps: mixing and uniformly stirring the thermoplastic acrylic resin and the nanoscale antibacterial substance to obtain antibacterial thermoplastic acrylic resin paint; the thermoplastic acrylic resin is a linear high molecular compound and has better physical and mechanical properties, weather resistance, chemical resistance and water resistance, so that the thermoplastic acrylic resin is coated on the polyethylene film body as a second film layer, the waterproof function of the PCM plate in different environments is enhanced, and the good fingerprint-resistant antibacterial property of the PCM plate is ensured under the condition of repeated heating or cooling.

Preferably, the nano-scale antibacterial substance is one or more of silver and zinc oxide; the metal silver ions and the zinc ions have excellent antibacterial property and are commonly used for preparing the antibacterial agent, but the metal ions have different degrees of toxicity to human bodies, so the antibacterial property of the metal ions is not easy to apply to the PCM plate; however, the invention adopts the nano-silver ions or the nano-zinc oxide, which not only has the antibacterial property of the silver ions and the zinc ions, but also has the characteristics of high heat resistance, non-mobility and large specific surface area of the nano-material, so that the nano-silver ions or the nano-zinc oxide are not easy to migrate, the release speed of trace active inorganic components in the nano-silver ions or the nano-zinc oxide is slow, and the material with the same quality has less dosage and high efficiency due to the larger specific surface area; therefore, the mixing of the nano silver ions or the nano zinc oxide in the thermoplastic acrylic resin not only ensures the long-acting antibacterial effect, but also ensures the characteristics of no toxicity and no stimulation to human bodies, and the high heat resistance of the nano material also improves the stability of the silver ions or the zinc oxide; the nano silver ions or the nano zinc oxide have good permeability and can be uniformly distributed in each layer of the PCM plate, so that the integral antibacterial effect of the PCM plate is ensured; meanwhile, the hardness of the PCM board paint layer can be properly improved by the inclusion of the nano silver ions or the nano zinc oxide in the PCM board.

Preferably, the thickness of the fingerprint-resistant finish paint layer is within the range of 10-15 μm, and the fingerprint-resistant finish paint layer is unsaturated polyester resin paint added with microcapsule antibacterial particles; the antibacterial agent is embedded and protected in the unsaturated polyester resin through a microcapsule technology, when the protective film and the paint layer above the fingerprint-resistant finish paint layer are all irradiated by ultraviolet rays or corroded and aged by chemicals, the unsaturated polyester resin of the layer can be degraded, and the microcapsule antibacterial particles permeate the outer layer to be slowly released to achieve the sterilization effect.

Preferably, the thickness of the primer layer is in the range of 10-15 μm, and the primer layer is one of unsaturated polyester resin paint, saturated polyester resin paint and terephthalic acid polyester resin paint.

In order to achieve the above object, the present invention is achieved by a manufacturing method including:

a manufacturing method of a fingerprint-resistant antibacterial PCM plate comprises the following steps: s1, preprocessing a metal substrate: sequentially carrying out alkali washing degreasing, water washing and drying operations on the metal substrate; s2, coating a front paint layer on the metal substrate processed in the step S1: sequentially coating a second chemical treatment layer, a first chemical treatment layer, a primer layer and a fingerprint-resistant finish paint layer on the front surface of the metal substrate, and then drying and curing; s3, coating a back paint layer on the metal substrate processed in the step S2: sequentially coating a first chemical treatment layer and a back paint layer on the back surface of the metal substrate, and then drying and curing; s4, pre-manufacturing a protective film: sequentially spraying an antibacterial thermoplastic acrylic resin paint layer and an alkylated aqueous epoxy resin paint layer on the polyethylene film body to form a protective film with a three-layer structure; and S5, attaching the protective film prepared in the step S4 to the metal substrate processed in the step S3.

Preferably, the step S2 includes: s21, spraying phosphating solution on the front surface of the metal substrate to form a second chemical treatment layer; s22, spraying passivation solution on the second chemical treatment layer to form a first chemical treatment layer; s23, spraying polyester resin paint on the first chemical treatment layer to form a primer layer; s24, spraying a fingerprint-resistant finish paint layer mixed with microcapsule antibacterial particles on the primer layer; s25, drying and curing the metal substrate processed in the step S24 within the temperature range of 310-370 ℃, wherein the curing time is 50-65S.

Preferably, the step S3 includes: s31, spraying passivation solution on the back of the metal substrate to form a first chemical treatment layer; s32, spraying a back paint layer below the first chemical treatment layer; s33, drying and curing the metal substrate processed in the step S32 within the temperature range of 210-270 ℃, wherein the curing time is 15-25S.

The invention has the beneficial effects that:

(1) the invention relates to a fingerprint-resistant antibacterial PCM plate, wherein a protective film adhered to the surface of the plate is of a three-layer structure, the three-layer structure comprises a first film layer, a second film layer and a third film layer from top to bottom, the first film layer is a hydrocarbylation water-based epoxy resin paint layer, the paint layer is the uppermost layer of the protective film and is also the first layer of the PCM plate, the epoxy resin of the paint layer is used as a high polymer and has very long carbon chains, the longer the carbon chains, the better the hydrophobicity of the paint layer is, meanwhile, as the hydroxyl is introduced into the epoxy resin through hydroxylation, the hydrophobicity is further improved, external sewage or sweat stains on hands of operators can be effectively prevented from being adhered to the PCM plate, the service performance of the PCM plate can be ensured, and sweat stains and fingerprints and the like are prevented from being adhered to the surface of the PCM plate due to the hydrophobicity characteristic of the surface.

(2) The invention relates to a fingerprint-resistant antibacterial PCM plate, wherein a protective film pasted on the surface of the plate is of a three-layer structure, and a second film layer of the three-layer structure is an antibacterial thermoplastic acrylic resin paint layer, wherein the thermoplastic acrylic resin has better physical and mechanical properties, weather resistance, chemical resistance and water resistance, can strengthen the waterproof function of the PCM plate in different environments, ensures that the PCM plate still has good fingerprint-resistant antibacterial performance under the condition of repeated heating or cooling, and a nano-scale antibacterial substance mixed with the thermoplastic acrylic resin has excellent antibacterial property, is not easy to migrate, has slow release speed of trace active inorganic components, and is low in dosage and efficient; therefore, the second film layer not only ensures the long-acting antibacterial effect, but also ensures the characteristics of no toxicity and no stimulation to human bodies.

(3) The invention relates to a fingerprint-resistant antibacterial PCM plate, wherein a protective film pasted on the surface of the plate is of a three-layer structure, the third film layer of the three-layer structure is a polyethylene film body, and the third film layer is used as the body of the protective film to support a first film layer and a second film layer to play a role in fingerprint resistance and antibacterial.

(4) The invention relates to a fingerprint-resistant antibacterial PCM plate which comprises a fingerprint-resistant finish paint layer, wherein microcapsule antibacterial particles are embedded in the paint layer to play a role in assisting in antibiosis.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of a PCM board according to the present invention.

In the figure: 1 first rete, 2 second retes, 3 third retes, 4 resistant fingerprint finish paint layers, 5 microcapsule antibacterial particles, 6 priming paint layers, 7 first chemical treatment layers, 8 second chemical treatment layers, 9 metal substrate, 10 back paint layers.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

As shown in fig. 1, the fingerprint-resistant antibacterial PCM board sequentially comprises a protective film, a fingerprint-resistant finish paint layer 4, a primer layer 6, a first chemical treatment layer 7, a second chemical treatment layer 8, a metal substrate 9, a first chemical treatment layer 7 and a back paint layer 10 from top to bottom.

The protection film is three layer construction, and three layer construction includes first rete 1, second rete 2 and third rete 3 from top to bottom.

The first film layer 1 is an ethylene glycol-alkylated aqueous epoxy resin paint layer with the thickness of 5 mu m; the preparation method of the first film layer 1 alkylated water-based epoxy resin paint comprises the following steps: dissolving ethylene glycol into the waterborne epoxy resin under an alkaline condition, heating to 80 ℃ for full reaction, drying in vacuum and crushing to obtain ethylene glycol-alkylated waterborne epoxy resin powder.

The second film layer 2 is an antibacterial thermoplastic acrylic resin paint layer with the thickness of 3 mu m; the preparation method of the second film layer 2 antibacterial thermoplastic acrylic resin paint comprises the following steps: and mixing the thermoplastic acrylic resin and the nano-scale silver ions, and uniformly stirring to obtain the antibacterial thermoplastic acrylic resin paint.

The third film layer 3 is a polyethylene film body with the thickness of 5 μm.

The fingerprint-resistant finish paint layer 4 is 10 mu m thick unsaturated polyester resin paint added with microcapsule antibacterial particles 5.

The primer layer 6 is an unsaturated polyester resin paint having a thickness of 10 μm.

The first chemical treatment layer 7 is a passivation solution coating with the thickness of 5 mu m.

The second chemical treatment layer 8 is a phosphating solution coating with the thickness of 5 mu m.

The metal substrate 9 is a stainless steel plate having a thickness of 24 μm.

The back paint layer 10 is a 5-micrometer-thick water-based epoxy resin paint added with a methacrylic resin monomer, wherein the methacrylic resin monomer accounts for 5-10% of the total mass of the water-based epoxy resin paint.

A manufacturing method of a fingerprint-resistant antibacterial PCM plate comprises the following steps:

s1, pretreating a metal substrate 9: sequentially carrying out alkali washing degreasing, water washing and drying operations on the metal substrate 9;

s21, spraying phosphating solution on the front surface of the metal substrate 9 processed in the step S1 to form a second chemical treatment layer 8;

s22, spraying passivation solution on the second chemical treatment layer 8 to form a first chemical treatment layer 7;

s23, spraying polyester resin paint on the first chemical treatment layer 7 to form a primer layer 6;

s24, spraying a fingerprint-resistant finish paint layer 4 mixed with microcapsule antibacterial particles 5 on the primer layer 6;

s25, drying and curing the metal substrate 9 processed in the step S24 within the temperature range of 310-370 ℃, wherein the curing time is 50-65S.

S31, spraying passivation solution on the back surface of the metal substrate 9 processed in the step S2 to form a first chemical treatment layer 7;

s32, spraying a back paint layer 10 below the first chemical treatment layer 7;

s33, drying and curing the metal substrate 9 processed in the step S32 within the temperature range of 210-270 ℃, wherein the curing time is 15-25S.

S4, pre-manufacturing a protective film: and sequentially spraying an antibacterial thermoplastic acrylic resin paint layer and an alkylated water-based epoxy resin paint layer on the polyethylene film body to form the protective film with a three-layer structure.

S5, the protective film produced in step S4 is applied to the metal substrate 9 processed in step S3.

Example 2

PCM panels were prepared according to the method of manufacture described in example 1, with the following layer structure composition and thickness:

example 3

PCM panels were prepared according to the method of manufacture described in example 1, with the following layer structure composition and thickness:

example 4

PCM panels were prepared according to the method of manufacture described in example 1, with the following layer structure composition and thickness:

example 5

PCM panels were prepared according to the method of manufacture described in example 1, with the following layer structure composition and thickness:

comparative example 1

The PCM plate with the same thickness manufactured by the existing manufacturing method is used as a comparison, the comparison PCM plate does not comprise the fingerprint-resistant finish paint layer 4, and the protective film is a common PE film.

The PCM boards prepared according to the structural components of examples 1-5 and the control PCM board were selected, cut to the same size, and subjected to touch, photo-aging, and fingerprint resistance antibacterial tests.

Touch test: 100 normal-touch volunteers aged 20-30 years were randomly selected, the touch on the surface of the sample was evaluated, the degree of softness and smoothness of the paint film was scored, the full score was 10, and the average of the results was taken.

And (3) photo aging test: the retention of transverse direction at the same tensile strength was tested after 1200h of 6000Lux illumination.

Fingerprint resistance antibacterial test: the fingerprint-resistant antibacterial tests of the same degree are respectively carried out at 0h, 10h, 50h, 100h, 500h and 1000h of the photoaging test.

The test results of each PCM panel, the touch test and the light aging test are shown in table 1.

TABLE 1 test results

	Touch test	Light aging test
			Example 1	9.1	96％
Example 2	9.5	93％
			Example 3	9.7	95％
Example 4	9.2	94％
			Example 5	9.6	97％
Comparative example 1	8.3	81％

As can be seen from table 1, the PCM boards prepared by the manufacturing method have good touch and anti-aging effects.

The results of the fingerprint resistance antibacterial test are shown in table 2, wherein, a circle indicates that the PCM plate is not easily contaminated with bacteria and is easily cleaned; o denotes that the PCM plate is susceptible to contamination but easy to clean; and x represents that the PCM plate is easy to be infected with bacteria and not easy to clean.

TABLE 2 test results

0h

10h

50h

100h

500h

1000h

Example 1

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Example 2

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Example 3

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Example 4

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Example 5

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Comparative example 1

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×

×

×

As can be seen from Table 2, the PCM plate prepared by the preparation method has good fingerprint-resistant antibacterial effect.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.