CN105820361A - Surface treatment method of plastic parts - Google Patents

Surface treatment method of plastic parts Download PDF

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Publication number
CN105820361A
CN105820361A CN201610237570.1A CN201610237570A CN105820361A CN 105820361 A CN105820361 A CN 105820361A CN 201610237570 A CN201610237570 A CN 201610237570A CN 105820361 A CN105820361 A CN 105820361A
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China
Prior art keywords
workpiece
putting
organic coating
finished product
sets
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Granted
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CN201610237570.1A
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Chinese (zh)
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CN105820361B (en
Inventor
郑航
李河昆
王应泉
王飞
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Ningbo Runner Industrial Corp
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Ningbo Runner Industrial Corp
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Priority to CN201610237570.1A priority Critical patent/CN105820361B/en
Publication of CN105820361A publication Critical patent/CN105820361A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • 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
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • 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
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/20—Metallic material, boron or silicon on organic substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a surface treatment method of plastic parts. The surface treatment method comprises the following steps: 1) cleaning the surface of a workpiece; 2) spraying a first organic coating; 3) putting the workpiece into an infrared furnace to carry out leveling drying; 4) putting the workpiece into an ultraviolet curing oven to carry out curing by ultraviolet radiation; 5) hanging the workpiece to a PVD (Plating Vacuum Deposition) furnace, carrying out vacuum evaporation and plating aluminum films to obtain a semi-finished product of which the surface is silver and bright; 6) spraying a second organic coating to the semi-finished product; 7) putting the workpiece into the infrared furnace to carry out pre-drying leveling; 8) putting the workpiece into the ultraviolet curing oven to obtain a finished product. According to the invention, the technological process is simple, the energy consumption is low, zero discharge of wastewater is realized in the whole process, and the pollution to the surrounding environment is avoided; furthermore, the raw materials are low in price and easy to purchase, and no obvious differences occur between the appearance and performances of the coating and the appearance and performances of an electroplating chromium product, and the coating has good corrosion resistance, excellent salt fog performances and higher level in comparison with the traditional plating SC4, so as to be especially suitable for harsh environments of bathrooms and the like.

Description

A kind of plastic item surface treatment method
Technical field
The present invention relates to a kind of plastic item surface treatment method.
Background technology
Current whole bathroom and automobile industry, improve year by year to the demand of plastic electroplating, and electrodeposited chromium is a technology important in plastic electroplating, and chromium coating has the strongest inactivating performance, has the outward appearance of silvery white gloss, and can keep for a long time, is widely used.
Along with country's raising to plating Environmental capacity, tradition hexavalent chromium plating has become increasingly limited, the trivalent chromium plating produced therewith being accepted progressively, but owing to technique is loaded down with trivial details, cost is high, energy consumption is high and pollutes big, is eliminated at last.
Summary of the invention
The technical problem to be solved is that a kind of technique is simple, efficiency is high, energy consumption is low and electrodeposited chromium technique is imitated on the plastic item surface of overall process non-wastewater discharge for the present situation offer for prior art.
The present invention solves the technical scheme that above-mentioned technical problem used: this plastic item surface treatment method, it is characterised in that comprise the steps:
1) surface is polished and hydrocarbon cleaning to workpiece to be handled, removes the burr of surface of the work, greasy dirt and the releasing agent of remained on surface, electrostatic and dust；
2) matrix surface after treatment sprays the first organic coating, and described first organic coating was the epoxy modified acrylic resin of 300-500 mesh sieve, controls spraying thickness in 12～26 μm；
Described first organic coating is the mixture of epoxy modified acrylic resin and diluent；
Wherein said epoxy modified acrylic resin includes following mass component:
Described diluent includes that following quality forms:
Trimethylolpropane trimethacrylate 65～68%
Propylene glycol diacrylate 32～35%
Described epoxy modified acrylic resin is 1:0.5～1.5 with the mass ratio of described diluent；
3) carrying out levelling in then putting the workpiece in infrared furnace and be dried 3～8 minutes, baking temperature is 40～75 DEG C；
4) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, uviol lamp exposure energy is 600～1000mj/cm2, curing rate is 6-8m/min；
5) then workpiece is hung to PVD stove, take out base vacuum to 3～5 × 10-2Pa, carries out vacuum evaporation and aluminizes film workpiece, obtains the semi-finished product of surface silvery white light；
6) above-mentioned semi-finished product spraying the second organic coating, control thickness is in 12～30 μm, and described second organic coating is PU light-cured resin and the special mixture opening profit；
Wherein said PU light-cured resin includes following mass component:
Described special profit of opening includes following mass component:
Propylene glycol diacrylate 28～32%
Butyl acetate 8～12%
Dimethylbenzene 55～65%
Described PU light-cured resin mixes with the ratio of 1:0.5～1.5 with described special profit of opening, and controls viscosity at 8～10Pa s/25 DEG C；It is 6.5 ± 2kg/cm at air pressure2, rifle is under 15～20cm, and even application, in surface of the work, controls thickness in 20 ± 2 μm；
7) carrying out predry levelling 5～10 minutes in then putting the workpiece in infrared furnace, predry temperature is 60～75 DEG C；
8) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, its uviol lamp exposure energy is 800～1600mj/cm2, curing rate is 6-8m/min, obtains finished product.
Preferably, step 5) in as follows at the vacuum vapor plating processing step of PVD stove:
1) opening voltage to 380-420V, set pivoted frame rotating speed as 80-120HZ, the response time is the 2-5 second；
2) voltage sets to 500-700V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 2-5 second；
3) voltage sets to 700-900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 2-5 second；
4) voltage sets to 1100-1300V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 3-7 second；
5) voltage sets to 1700-1900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 10-14 second；
After end, blow-on obtains the semi-finished product of surface silvery white light.
The most described first organic coating viscosity under 20 DEG C of ambient temperatures is 13 ± 3Pa s.
Preferably, step 5) in as follows at the vacuum vapor plating processing step of PVD stove:
1) opening voltage to 380～420V, set pivoted frame rotating speed as 80-120HZ, the response time is 2～5 seconds；
2) voltage sets to 500～700V, sets pivoted frame rotating speed as 80-120HZ, and the response time is 2～5 seconds；
3) voltage sets to 700～900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is 2～5 seconds；
4) voltage sets to 1100～1300V, sets pivoted frame rotating speed as 80-120HZ, and the response time is 3～7 seconds；
5) voltage sets to 1700-1900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is 10～14 seconds；
After end, blow-on obtains the semi-finished product of surface silvery white light.
Preferably, described first organic coating viscosity under 20 DEG C of ambient temperatures is 13 ± 3Pa s.
Compared with prior art, plastic item surface treatment method technological process provided by the present invention is simple, and energy consumption is low, and overall process realizes non-wastewater discharge, it is to avoid the pollution to surrounding；And former material price is low, easily purchase, and the outward appearance of coating and performance and electrodeposited chromium product no significant difference, and good corrosion resistance, salt fog excellent performance, the grade of more traditional plating SC4 is the highest, is especially suitable for being used in the rugged environments such as bathroom.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
This plastic item surface treatment method comprises the steps:
1) surface is polished and hydrocarbon cleaning to workpiece to be handled, removes the burr of surface of the work, greasy dirt and the releasing agent of remained on surface, electrostatic and dust；
2) matrix surface after treatment sprays the first organic coating, and described first organic coating was that the epoxy modified acrylic resin of 400 mesh sieves is dissolved in special diluting agent.
The quality group of described epoxy modified acrylic resin becomes:
The quality group of special diluting agent becomes:
Trimethylolpropane trimethacrylate 66.2%
Propylene glycol diacrylate 33.8%
Epoxy modified acrylic resin is mixed homogeneously by weight 1:1 with special diluting agent, obtains the first organic coating that viscosity is 13 ± 3Pa s.The viscosity of the first organic coating uses-4 glasss of viscometers of painting to record at 20 DEG C.
It is 6.5 ± 2kg/cm by the first organic coating at air pressure2, rifle is under 15～20cm, and even application, in surface of the work, controls spraying thickness in 20 ± 2 μm.
3) carrying out predry levelling 5 minutes in then putting the workpiece in infrared furnace, predry temperature is 55 ± 2 DEG C；
4) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, its uviol lamp exposure energy is at 800mj/cm2, curing rate is 7m/min；
5) again workpiece is hung to PVD stove, take out base vacuum to 4.0 × 10-2Pa, carries out vacuum evaporation and aluminizes film workpiece, and coating process step is as follows:
1, opening voltage to 400V, set pivoted frame rotating speed as 100HZ, the response time is 3 seconds；
2, voltage sets to 600V, sets pivoted frame rotating speed as 100HZ, and the response time is 3 seconds；
3, voltage sets to 800V, sets pivoted frame rotating speed as 100HZ, and the response time is 3 seconds；
4, voltage sets to 1200V, sets pivoted frame rotating speed as 100HZ, and the response time is 5 seconds；
5, voltage sets to 1800V, sets pivoted frame rotating speed as 100HZ, and the response time is 12 seconds；
Above step is the PVD automatic operating procedure of stove program setting, terminates rear blow-on and obtains the semi-finished product of surface silvery white light；
6) above-mentioned semi-finished product are sprayed the second organic coating.
Second organic coating is PU light-cured resin and the special mixture opening profit.
Wherein PU light-cured resin includes following mass component:
Special profit of opening includes following mass component:
Propylene glycol diacrylate 30%
Butyl acetate 10%
Dimethylbenzene 60%
PU light-cured resin mixes with the weight ratio of 1:1 with special profit of opening, and obtains the second organic coating that viscosity is 9Pa s/25 DEG C.It is 6.5 ± 2kg/cm at air pressure2, rifle is under 15～20cm, by the second organic coating even application in surface of the work, controls thickness in 20 ± 2 μm.
7) at 70 ± 5 DEG C, predry levelling is carried out 8 minutes in then putting the workpiece in infrared furnace；
8) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, its uviol lamp exposure energy is at 1200mj/cm2, curing rate is 7m/min, obtains finished product.
9) workpiece handled well is carried out following function test:
(A) CASS anticorrosion: 16h；Method of testing: ASTMB368-09；
(B) thermal shock circulation: 8 circulations；Method of testing: ASTMG85-09；
(C) adhesion (hundred cut): 5B；Method of testing: ASTMD3359-02；
(D) water logging 38 DEG C: 24h；Method of testing: ASTMD870-02；
(E) pencil hardness (TURQUOISE board pencil): 4H；Method of testing: ASTMD3363-05；
(F) scratch resistance test (ASTMD5178-9).

Claims (3)

1. a plastic item surface treatment method, it is characterised in that comprise the steps:
1) surface is polished and hydrocarbon cleaning to workpiece to be handled, removes the burr of surface of the work, greasy dirt and the releasing agent of remained on surface, electrostatic and dust；
2) matrix surface after treatment sprays the first organic coating, and described first organic coating was the epoxy modified acrylic resin of 300-500 mesh sieve, controls spraying thickness in 12～26 μm；
Described first organic coating is the mixture of epoxy modified acrylic resin and diluent；
Wherein said epoxy modified acrylic resin includes following mass component:
Described diluent includes that following quality forms:
Trimethylolpropane trimethacrylate 65～68%
Propylene glycol diacrylate 32～35%
Described epoxy modified acrylic resin is 1:0.5～1.5 with the mass ratio of described diluent；
3) carrying out levelling in then putting the workpiece in infrared furnace and be dried 3～8 minutes, baking temperature is 40～75 DEG C；
4) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, uviol lamp exposure energy is 600～1000mj/cm2, curing rate is 6-8m/min；
5) then workpiece is hung to PVD stove, take out base vacuum to 3～5 × 10-2Pa, carries out vacuum evaporation and aluminizes film workpiece, obtains the semi-finished product of surface silvery white light；
6) above-mentioned semi-finished product spraying the second organic coating, control thickness is in 12～30 μm, and described second organic coating is PU light-cured resin and the special mixture opening profit；
Wherein said PU light-cured resin includes following mass component:
Described special profit of opening includes following mass component:
Propylene glycol diacrylate 28～32%
Butyl acetate 8～12%
Dimethylbenzene 55～65%
Described PU light-cured resin mixes with the ratio of 1:0.5～1.5 with described special profit of opening, and controls viscosity at 8～10Pa s/25 DEG C；It is 6.5 ± 2kg/cm at air pressure2, rifle is under 15～20cm, and even application, in surface of the work, controls thickness in 20 ± 2 μm；
7) carrying out predry levelling 5～10 minutes in then putting the workpiece in infrared furnace, predry temperature is 60～75 DEG C；
8) putting the workpiece in uv oven again and carry out ultraviolet radiation-curable, its uviol lamp exposure energy is 800～1600mj/cm2, curing rate is 6-8m/min, obtains finished product.
Plastic item surface treatment method the most according to claim 1, it is characterised in that step 5) in as follows at the vacuum vapor plating processing step of PVD stove:
1) opening voltage to 380-420V, set pivoted frame rotating speed as 80-120HZ, the response time is the 2-5 second；
2) voltage sets to 500-700V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 2-5 second；
3) voltage sets to 700-900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 2-5 second；
4) voltage sets to 1100-1300V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 3-7 second；
5) voltage sets to 1700-1900V, sets pivoted frame rotating speed as 80-120HZ, and the response time is the 10-14 second；
After end, blow-on obtains the semi-finished product of surface silvery white light.
Plastic item surface treatment method the most according to claim 1 and 2, it is characterised in that described first organic coating viscosity under 20 DEG C of ambient temperatures is 13 ± 3Pa s.
CN201610237570.1A 2016-04-15 2016-04-15 A kind of plastic item surface treatment method Active CN105820361B (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108385060A (en) * 2018-03-06 2018-08-10 深圳市科益实业有限公司 Spectacle lens production method and producing device
CN111772516A (en) * 2020-06-11 2020-10-16 惠达卫浴股份有限公司 Bathtub preparation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067204A (en) * 2006-12-27 2007-11-07 御林汽配(昆山)有限公司 Technological process for lauminizing or coppering on aluminium or aluminium-magnesium alloy substrate
CN102190917A (en) * 2011-03-25 2011-09-21 上海卓银斯贸易有限公司 Seven-color rainbow paint, preparation method thereof, and vacuum coating construction method
CN102517547A (en) * 2011-12-26 2012-06-27 长沙市岩田涂料科技有限公司 Method for plating aluminum film or aluminum-tin alloy film on surface of continuous aluminum rolling plate in vacuum gas phase sedimentation method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067204A (en) * 2006-12-27 2007-11-07 御林汽配(昆山)有限公司 Technological process for lauminizing or coppering on aluminium or aluminium-magnesium alloy substrate
CN102190917A (en) * 2011-03-25 2011-09-21 上海卓银斯贸易有限公司 Seven-color rainbow paint, preparation method thereof, and vacuum coating construction method
CN102517547A (en) * 2011-12-26 2012-06-27 长沙市岩田涂料科技有限公司 Method for plating aluminum film or aluminum-tin alloy film on surface of continuous aluminum rolling plate in vacuum gas phase sedimentation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108385060A (en) * 2018-03-06 2018-08-10 深圳市科益实业有限公司 Spectacle lens production method and producing device
CN108385060B (en) * 2018-03-06 2020-08-07 深圳市科益实业有限公司 Method and device for manufacturing spectacle lens
CN111772516A (en) * 2020-06-11 2020-10-16 惠达卫浴股份有限公司 Bathtub preparation method

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