CN102974515A - Plastic anti-cracking coating process for domestic appliance - Google Patents
Plastic anti-cracking coating process for domestic appliance Download PDFInfo
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- CN102974515A CN102974515A CN2012104266895A CN201210426689A CN102974515A CN 102974515 A CN102974515 A CN 102974515A CN 2012104266895 A CN2012104266895 A CN 2012104266895A CN 201210426689 A CN201210426689 A CN 201210426689A CN 102974515 A CN102974515 A CN 102974515A
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Abstract
The invention discloses a plastic anti-cracking coating process for a domestic appliance. The plastic anti-cracking coating process for the domestic appliance is characterized in that water-based plastic coating of various colors replaces solvent type plastic coating to be used for plastic coating of the domestic appliance, the water-based plastic coating is enabled to be correctly used for the plastic coating of the domestic appliance, not only is the quality problem of cracking occurring in poly carbonate (PC), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS)+PMMA and other plastic coating solved, but also the needs of decorative appearance of plastic of the domestic appliance are met.
Description
Technical field
The present invention relates to the anti-cracking of a kind of household electrical appliance plastics coating process.
Background technology
The household electrical appliance coating is an important ring of household electrical appliance manufacturing process, but therefore its reinforced plastic material useful life longevity and the function that decorative effect is provided enjoy concern and the attention of industry.The PC plastics are poor because of self lubricity, so the stress cracking tendency is arranged, when going back the Chang Yinwei injection mo(u)lding, residual stress increases, and tearing tendency increases.The PMMA elongation at break is 2%-3% only, and is so Mechanical Characteristics belongs to hard and crisp plastics basically, and has notch sensitivity, easy to crack when stress increases; Behind the application solvent based coating, because organic solvent corrosion material increases its internal stress, thereby cause cracking.The ABS+PMMA plastics make it demonstrate some characteristics of PMMA because having added PMMA.Traditional household electrical appliance application is take solvent based coating as main, and the phenomenon of plastics (PC, PMMA, ABS+PMMA) ubiquity organic solvent corrosion material when application the material problem of Cracking can occur when serious.
Summary of the invention
The purpose of this invention is to provide the anti-cracking of a kind of household electrical appliance plastics coating process, this coating process makes water-based plastic coating can correctly be used for the household electrical appliance plastics coating, both solve the cracking quality problems that the plastics coatings such as PC, PMMA, ABS+PMMA occur, satisfied again the household electrical appliance plastics to the ornamental requirement of outward appearance.
The anti-cracking of a kind of household electrical appliance plastics provided by the invention coating process may further comprise the steps successively:
(1) the household electrical appliance plastics is carried out material and process, then clean with washing shell water, carry out again drifting dust;
(2) at household electrical appliance frosting water spray property plastic paint, then the normal temperature levelling toasts 10～20min to the water-based plastic coating that has sprayed under 45 ℃ ~ 60 ℃ temperature, and appearance of film and performance are tested.
As of the present invention further perfect, after finishing, step (2) carries out step (3): the title of product type, specification, title or company is printed on water-based plastic coating films by serigraphy, then crossing the silk-screen stove toasts more than the 1min under 50 ℃ ~ 60 ℃ temperature, then room temperature was placed more than 2 hours, and the silk-screen outward appearance is tested, packed.
Material of the present invention refers to the plastic basis material of PC, PMMA, ABS+PMMA.Described material is processed the injection moulding folder water wave or the defective that refer to material and is polished, and polishes after using 1000～1500 purpose sand paper with water-wet during polishing.
Usefulness of the present invention wash shell water clean refer to white spirit the releasing agent on the casing and dust eraser is clean.
Drifting dust of the present invention be with pressure be 4～7 atmospheric air-flows treat the spraying casing carry out drifting dust.
Water spray plastic paint of the present invention refers to spray the anti-pure plastic paint of low temperature fast solidification water, the prescription of this coating consists of: alkali swelling thickener 1 ~ 5%, aqueous acrylic emulsion 45 ~ 60%, auxiliary agent 5 ~ 19%, pigment 5 ~ 30%, deionized water 10 ~ 25%.The solidification temperature of the anti-pure plastic paint of this low temperature fast solidification water is 45 ℃～60 ℃, has reduced by 20 ℃ ~ 30 ℃ than common water-based plastic paint; Be 10～20 minutes its hardening time, shortened 10 ~ 20 minutes than common water-based plastic paint; About 30～100 grams per liters of VOC content have reduced by 80～150 grams per liters than general water-based plastic coating; It comprises multiple color, such as multiple water-based plastic coating such as silvery white, silver gray, ater, pure white, sudden strain of a muscle silver color, sudden strain of a muscle black, yellow, illusion-colour pearly-lustre look, pure pearly-lustre looks.
Described alkali swelling thickener refers to the alkali swelling thickener of hydrophobically modified, such as the Rheovis CR of Britain Allied Colliod company, HASE4180, the HASE8301 of SAMASO company.
Described aqueous acrylic emulsion refers to self-crosslinking aqueous acrylic emulsion or a kind of quick-drying acrylate copolymer emulsion, such as the HD1092 of U.S. Hua Jinsi company, PC-21, the CR-763 of Carboset company.
Described auxiliary agent refers to 25% ammoniacal liquor, BYK190, BYK333, EFKA3033, TEGO245, dipropylene glycol methyl ether, DPG butyl ether, propandiol butyl ether, ethylene glycol monobutyl ether or their mixture.
Described pigment refers to Huang or their mixture among OK607, ED30,600# carbon black, R980 titanium dioxide, KC110 pearl essence, aqueous aluminum powder, 4920 orchids, F3RK, the G2200.
Normal temperature levelling of the present invention refers to that the water-based plastic coating wet film that will be sprayed on the semi-finished product stopped 1～3 minute at normal temperatures, and under the effect of wet film self gravitation, auxiliary agent, it is smooth with trend to film.
Baking of the present invention is that the water-based plastic coating that has sprayed is toasted, and to promote the middle moisture content volatilization of filming, impels the curing of coating film forming.
Check of the present invention refers to appearance of film and performance are checked, checks outward appearance has zero defect, performance whether to meet the demands.
Room temperature of the present invention is placed two purposes more than 2 hours: one makes the semi-finished product of techniques such as having finished water-based plastic spray painting and silk-screen return to normality from the thermoelastic attitude; Its two, the moisture content of water-based plastic coating in filming is discharged as far as possible fully.
Of the present invention to cross the silk-screen stove be that the product that silk-screen is good toasts, and impels that solvent evaporates is with film-forming in the ink for screen printing, and baking is normally carried out under 50 ℃ ~ 60 ℃ temperature, more than about 1min of time.If the production scene lacks the silk-screen stove, also can use other oven to carry out; Perhaps at room temperature place more than two hours.
Packing of the present invention is that the final products that will be up to the standards wrap up with soft expanded polyethylene foam and packaging bag, in order to avoid be bruised in carrying and cargo handling process.
The present invention compared with prior art has the following advantages:
(1) application techniques of the present invention is used in water-based plastic paint replacement solvent-borne type plastic paint of all kinds on the household electrical appliance plastics coating, make water-based plastic coating can correctly be used for the household electrical appliance plastics coating, appearance of coat after its application is good, decorative effect is good, and has good mechanical performance and physical and chemical performance.
(2) the present invention adopts the anti-pure plastic paint of a kind of low temperature fast solidification water to replace solvent based coating to carry out application.But because of this water-based plastic coating low temperature rapid curing, the risk of having avoided high temperature that material is ftractureed, and organic solvent content is very low, and extremely light to the material corrosion, so the cracking phenomena of the plastics such as PC, PMMA, ABS+PMMA can not occur.Therefore, an urgent demand of household electrical appliance industry replaces traditional application pattern with new material or technique, the cracking quality problems that occur to solve plastics (PC, PMMA, ABS+PMMA) application.
The specific embodiment
Adopt water spray property plastic paint to be the anti-pure plastic paint of spraying low temperature fast solidification water among the present invention, the prescription of this coating consists of: alkali swelling thickener 1 ~ 5%, aqueous acrylic emulsion 45 ~ 60%, auxiliary agent 5 ~ 19%, pigment 5 ~ 30%, deionized water 10 ~ 25%.The solidification temperature of the anti-pure plastic paint of this low temperature fast solidification water is 45 ℃～60 ℃, has reduced by 20 ℃ ~ 30 ℃ than common water-based plastic paint; Be 10～20 minutes its hardening time, shortened 10 ~ 20 minutes than common water-based plastic paint; About 30～100 grams per liters of VOC content have reduced by 80～150 grams per liters than general water-based plastic coating; It comprises multiple color, such as multiple water-based plastic coating such as silvery white, silver gray, ater, pure white, sudden strain of a muscle silver color, sudden strain of a muscle black, yellow, illusion-colour pearly-lustre look, pure pearly-lustre looks.
Described alkali swelling thickener refers to the alkali swelling thickener of hydrophobically modified, can be the Rheovis CR of Britain Allied Colliod company, also can be HASE4180 or the HASE8301 of SAMASO company.
Described aqueous acrylic emulsion refers to self-crosslinking aqueous acrylic emulsion or a kind of quick-drying acrylate copolymer emulsion, can be the HD1092 of U.S. Hua Jinsi company, also can be PC-21 or the CR-763 of Carboset company.
Described auxiliary agent can be 25% ammoniacal liquor, BYK190, BYK333, EFKA3033, TEGO245, dipropylene glycol methyl ether, DPG butyl ether, propandiol butyl ether, ethylene glycol monobutyl ether or their mixture.
Described pigment can be yellow among OK607, ED30,600# carbon black, R980 titanium dioxide, KC110 pearl essence, aqueous aluminum powder, 4920 orchids, F3RK, the G2200 or their mixture.Pigment can add according to required color.
Embodiment 1
Pearly-lustre look water-based plastic coating: alkali swelling thickener 1%, aqueous acrylic emulsion 60%, auxiliary agent 9%, KC110 pearl essence 6%, deionized water 24%.
White water-based plastic paint: alkali swelling thickener 1%, aqueous acrylic emulsion 50%, auxiliary agent 9%, R980 titanium dioxide 25%, deionized water 15%.
Plastics PC defective is made grinding process with 1000 sand paper, clean with the 6# solvent naphtha, the high pressure draught drifting dust, plastic back bottom spraying pearly-lustre look water-based plastic coating, the normal temperature levelling, 60 ℃ of baking 10min test to appearance of film and performance, and the plastic back surface layer sprays white water-based plastic paint, the normal temperature levelling, 55 ℃ of baking 10min test silk-screen to appearance of film and performance, cross 55 ℃ of bakings of silk-screen stove 2min, the silk-screen outward appearance is tested, and room temperature was placed more than 2 hours, and the silk-screen outward appearance is tested, packed.
Embodiment 2
Silvery white water-based plastic coating: alkali swelling thickener 1%, aqueous acrylic emulsion 50%, auxiliary agent 19%, aqueous aluminum powder 5%, deionized water 25%.
Plastics PMMA defective is made grinding process with 1000 sand paper, clean high pressure draught drifting dust, plastic back spraying single silver white water-based plastic paint with the 6# solvent naphtha, the normal temperature levelling, 45 ℃ of baking 15min test silk-screen to appearance of film and performance, cross 55 ℃ of bakings of silk-screen stove 2min, the silk-screen outward appearance is tested, and room temperature was placed more than 2 hours, and the silk-screen outward appearance is tested, packed.
Embodiment 3
White water-based plastic paint: alkali swelling thickener 1%, aqueous acrylic emulsion 50%, auxiliary agent 9%, R980 titanium dioxide 25%, deionized water 15%.
Plastics ABS+PMMA defective is made grinding process with 1000 sand paper, clean high pressure draught drifting dust, the positive spraying of plastics individual layer white water-based plastic paint with the 6# solvent naphtha, the normal temperature levelling, 55 ℃ of baking 10min test silk-screen to appearance of film and performance, cross 55 ℃ of bakings of silk-screen stove 2min, the silk-screen outward appearance is tested, and room temperature was placed more than 2 hours, and the silk-screen outward appearance is tested, packed.
Claims (10)
1. the anti-cracking of a household electrical appliance plastics coating process is characterized in that, may further comprise the steps:
(1) the household electrical appliance plastics is carried out material and process, then clean with washing shell water, carry out again drifting dust;
(2) at household electrical appliance frosting water spray property plastic paint, then the normal temperature levelling toasts 10～20min to the water-based plastic coating that has sprayed under 45 ℃ ~ 60 ℃ temperature, and appearance of film and performance are tested.
2. technique according to claim 1, it is characterized in that, after finishing, step (2) carries out step (3): the title of product type, specification, title or company is printed on water-based plastic coating films by serigraphy, then crossing the silk-screen stove toasts more than the 1min under 50 ℃ ~ 60 ℃ temperature, then room temperature was placed more than 2 hours, and the silk-screen outward appearance is tested, packed.
3. technique according to claim 1 and 2 is characterized in that, the described material of step (1) refers to the plastic basis material of PC, PMMA, ABS+PMMA.
4. technique according to claim 1 and 2 is characterized in that, it is that injection moulding folder water wave or defective to material polished that the described material of step (1) is processed, and polishes after using 1000～1500 purpose sand paper with water-wet during polishing.
5. technique according to claim 1 and 2 is characterized in that, the described usefulness of step (1) wash shell water clean refer to white spirit the releasing agent on the casing and dust eraser is clean.
6. technique according to claim 1 and 2 is characterized in that, the described drifting dust of step (1) be with pressure be 4 ~ 7 atmospheric air-flows treat the spraying casing carry out drifting dust.
7. technique according to claim 1 and 2, it is characterized in that, the described water spray plastic paint of step (2) is the anti-pure plastic paint of spraying low temperature fast solidification water, the prescription of this coating consists of: alkali swelling thickener 1 ~ 5%, aqueous acrylic emulsion 45 ~ 60%, auxiliary agent 5 ~ 19%, pigment 5 ~ 30%, deionized water 10 ~ 25%.
8. technique according to claim 7, it is characterized in that, the alkali swelling thickener that described alkali swelling thickener is hydrophobically modified, described aqueous acrylic emulsion refers to self-crosslinking aqueous acrylic emulsion or quick-drying acrylate copolymer emulsion, described auxiliary agent refers to 25% ammoniacal liquor, BYK190, BYK333, EFKA3033, TEGO245, dipropylene glycol methyl ether, the DPG butyl ether, propandiol butyl ether, ethylene glycol monobutyl ether or their mixture, described pigment refers to carbon black, titanium dioxide, pearl essence, aqueous aluminum powder, 4920 orchids, F3RK, yellow or two or more mixture in them among the G2200.
9. technique according to claim 1 and 2, it is characterized in that, the described normal temperature levelling of step (2) is that the water-based plastic coating wet film that will be sprayed on the semi-finished product stopped 1～3 minute at normal temperatures, and under the effect of wet film self gravitation, auxiliary agent, it is smooth with trend to film.
10. technique according to claim 2, it is characterized in that step (3) is described, and to cross the silk-screen stove be that the product that silk-screen is good toasts, impel in the ink for screen printing solvent evaporates with film-forming, baking is normally carried out under 50 ℃ ~ 60 ℃ temperature, and the time is more than the 1min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104266895A CN102974515A (en) | 2012-10-31 | 2012-10-31 | Plastic anti-cracking coating process for domestic appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104266895A CN102974515A (en) | 2012-10-31 | 2012-10-31 | Plastic anti-cracking coating process for domestic appliance |
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| CN102974515A true CN102974515A (en) | 2013-03-20 |
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| CN2012104266895A Pending CN102974515A (en) | 2012-10-31 | 2012-10-31 | Plastic anti-cracking coating process for domestic appliance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525216A (en) * | 2013-09-27 | 2014-01-22 | 广州擎天材料科技有限公司 | Water-based plastic paint applicable to composite layer coating film, and preparation process thereof |
| CN104084365A (en) * | 2014-07-02 | 2014-10-08 | 江苏海田技术有限公司 | Anti-cracking paint film and coating method thereof |
| CN106867340A (en) * | 2017-03-03 | 2017-06-20 | 肇庆市哈力化工有限公司 | A kind of plastic roller coating polish lacquer of quick-drying and preparation method thereof |
| CN107227082A (en) * | 2016-12-22 | 2017-10-03 | 邹小金 | A kind of aqueous plastic paint and its production and use |
| CN114921138A (en) * | 2022-03-14 | 2022-08-19 | 安徽西格尔涂料科技有限公司 | Water-based single-component high-alcohol-resistance ABS plastic paint and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444776A (en) * | 2008-12-26 | 2009-06-03 | 广州擎天实业有限公司 | Coating process of applying ultraviolet curing coating to indoor unit enclosure of air conditioner |
| CN101747818A (en) * | 2009-11-27 | 2010-06-23 | 广州擎天实业有限公司 | Water-based paint for quick-drying alcohol-resistance plastics and preparation method thereof |
-
2012
- 2012-10-31 CN CN2012104266895A patent/CN102974515A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444776A (en) * | 2008-12-26 | 2009-06-03 | 广州擎天实业有限公司 | Coating process of applying ultraviolet curing coating to indoor unit enclosure of air conditioner |
| CN101747818A (en) * | 2009-11-27 | 2010-06-23 | 广州擎天实业有限公司 | Water-based paint for quick-drying alcohol-resistance plastics and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525216A (en) * | 2013-09-27 | 2014-01-22 | 广州擎天材料科技有限公司 | Water-based plastic paint applicable to composite layer coating film, and preparation process thereof |
| CN104084365A (en) * | 2014-07-02 | 2014-10-08 | 江苏海田技术有限公司 | Anti-cracking paint film and coating method thereof |
| CN107227082A (en) * | 2016-12-22 | 2017-10-03 | 邹小金 | A kind of aqueous plastic paint and its production and use |
| CN106867340A (en) * | 2017-03-03 | 2017-06-20 | 肇庆市哈力化工有限公司 | A kind of plastic roller coating polish lacquer of quick-drying and preparation method thereof |
| CN114921138A (en) * | 2022-03-14 | 2022-08-19 | 安徽西格尔涂料科技有限公司 | Water-based single-component high-alcohol-resistance ABS plastic paint and preparation method thereof |
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Application publication date: 20130320 |