CN108993842A - A kind of clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts - Google Patents
A kind of clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts Download PDFInfo
- Publication number
- CN108993842A CN108993842A CN201811135743.4A CN201811135743A CN108993842A CN 108993842 A CN108993842 A CN 108993842A CN 201811135743 A CN201811135743 A CN 201811135743A CN 108993842 A CN108993842 A CN 108993842A
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- Prior art keywords
- varnish
- priming paint
- paint
- carbon fiber
- drying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/53—Base coat plus clear coat type
- B05D7/536—Base coat plus clear coat type each layer being cured, at least partially, separately
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to spraying technology field, it is related to the process sprayed to automobile exterior trimming parts more particularly to a kind of clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts.Carbon fiber/epoxy resin composite material exterior trimming parts is clear-coated to refer to a kind of application techniques that carbon fiber texture can be clearly apparent after exterior trimming parts spray painting.The selection of uvioresistant priming paint and varnish can guarantee the weatherability requirement of exterior trimming parts, while the use of this low-temperature lacquer in the present invention, cast aside the painting environment that automobile is usually more than 170 DEG C, significantly reduced the requirement to equipment, reduce painting cost；In every procedure sand paper mesh number it is selected be it is authenticated by a large number of experiments, can guarantee that the texture of carbon fiber woven cloth substrate shows very high clarity and adhesive force；Twice priming paint and the reasonably combined of twice finishing coat process can efficiently control painting cost and coating efficiency.
Description
Technical field
The invention belongs to spraying technology field, it is related to the process sprayed to automobile exterior trimming parts more particularly to one
The kind clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts.
Background technique
Currently, the exterior trimming parts of automobile mostly uses greatly plastics or metal material to prepare, manufacturing process is to apply putty-drying-
Polishing-primer spray -- levelling surface drying -- drying-polishing -- cleaning -- middle painting -- levelling surface drying -- drying-polishing -- cleaning -- spray
Varnish -- drying -- polishing.Such spraying process sprays coloured spray so that its table its purpose is to cover the defect on substrate
Face is beautiful.But carbon fiber/epoxy resin composite material has special basic material texture, coating specification is weather-proof well
Property, clarity and very high glossiness, carbon fiber texture cannot be then clearly apparent using existing spraying process, it is made to lose original
Some aesthetic feelings.
Summary of the invention
The purpose of the present invention is to propose to a kind of exterior trimming parts for being able to maintain the original texture of carbon fiber/epoxy resin composite material
Clear-coated method.
The technical solution of the invention is as follows,
Method the following steps are included:
Pretreatment of base material step: rotatably being exerted a force using P240-P400 sand paper and polished substrate surface, its surface is made
Tension reaches 48 dynes or more；
Basecoat paint step: using SATA jet 100B F RP spray gun, and aerial spraying CF-1000 dual-component polyurethane is low
Warm priming paint, spray pressure 0.4MPa, nozzle diameter 1.6mm, 0.4~0.5m/s of spraying rate, nozzle are vertical to surface is painted
Distance 15cm~20cm, sprays the folded rifle spacing 40mm~60mm in path, and 24 ± 4 DEG C of environment temperature, relative humidity 60%~
70%RH, 10~15min of levelling surface drying time；First 35~40 μm of basecoat paint thickness of dry film, second basecoat paint is dry
30~35 μm of film thickness；
Priming paint polishing step: it after first of priming paint drying, is rotatably exerted a force using P400 sand paper and is polished first of paint film
To 15~20 μm of thickness of dry film；After the drying of second priming paint, second paint film dry type is polishing to using P600~P800 sand paper
35~45 μm of dry film overall thickness；
Lacquer varnish step: rock field spray gun W-101, aerial spraying CF-9000 dual-component polyurethane low temperature varnish are used；Spray
Apply pressure 0.4MPa, nozzle diameter 1.3mm, 0.4~0.5m/s of spraying rate, nozzle to be painted surface vertical range 15cm~
20cm, sprays the folded rifle spacing 40mm~60mm in path, and 25 ± 4 DEG C of environment temperature, 70% ± 5%RH of relative humidity, levelling table
Dry 10~15min of time；First of varnish sprays 40~50 μm of thickness of dry film, and second varnish sprays 30~45 μ of thickness of dry film
m；
1) after first of varnish drying, paint film overall thickness varnish treated step: is polishing to using P1000~P1500 sand paper
70~90 μm, 100~135 μm of dry film overall thickness are polished to after the drying of second varnish；
2) priming paint and varnish baking procedure: per pass priming paint toasts 30min at a temperature of 80 DEG C ± 3 DEG C；First of varnish exists
45min is toasted at a temperature of 80 DEG C ± 3 DEG C；Second varnish toasts 30min at a temperature of 80 DEG C ± 3 DEG C.
It is described to check whether surface of the paint film has the defect of pin hole and pit class after the polishing of per pass priming paint, if defective
Priming paint coating is carried out, coating method is to carry out 80 DEG C of ± 3 DEG C of temperature in part using medical needle locally injecting priming paint to fault location
Drying, the polishing of P600 sand paper, cleaning agent cleaning and compressed air drying.
The present invention has the advantage that and beneficial effect
Carbon fiber/epoxy resin composite material exterior trimming parts is clear-coated refer to exterior trimming parts spray painting after can be clearly apparent carbon fiber
A kind of application techniques of texture.With the trend that automotive light weight technology develops, carbon fibre composite is widely applied onto passenger car.
This clear-coated method is exactly the special warfare in order to meet this application and generation, and it is rich to exterior trimming parts to meet passenger car market
Rich individual requirement, greatlys improve the added value of automobile.The selection of uvioresistant priming paint and varnish can be protected in the present invention
The weatherability requirement of exterior trimming parts, while the use of this low-temperature lacquer are demonstrate,proved, the painting environment that automobile is usually more than 170 DEG C has been cast aside,
The requirement to equipment is significantly reduced, painting cost is reduced；The selected of sand paper mesh number is by largely trying in every procedure
It tests authenticated, can guarantee that the texture of carbon fiber woven cloth substrate shows very high clarity and adhesive force；Twice priming paint
Reasonably combined with twice finishing coat process can efficiently control painting cost and coating efficiency.The invention has specific application pair
As with accessible excellent properties index；Especially there is executable standardization production method, because of parameter amount in operating procedure
Change, it can be achieved that production line automation.
Detailed description of the invention
Fig. 1 is the clear-coated process flow of composite material automobile exterior trimming parts with the visual texture of carbon fiber/epoxy resin
Schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Technical solution of the present invention is to carry out coating using the standard technology of following steps:
1) pretreatment of base material step: using the rotary uniform force application of P320 sand paper, comprehensively dry type corase grinding is sprayed-on surface
To matt state, substrate surface release agent is removed, its surface tension is made to reach 48 dynes or more.
2) first of basecoat paint step: using SATA jet 100B F RP spray gun, and aerial spraying carbon fiber is dedicated
Bright priming paint.Spray pressure 0.4MPa, nozzle diameter 1.6mm, 0.4~0.5m/s of spraying rate, nozzle are vertical to surface is painted
Distance 15cm~20cm, sprays the folded rifle spacing 40mm~60mm in path, and 24 ± 4 DEG C of environment temperature, relative humidity 60%~
70%RH, 10~15min of levelling surface drying time；35~40 μm of thickness of dry film.
3) first of priming paint baking procedure: first of priming paint toasts 30min at a temperature of 80 DEG C ± 3 DEG C.
4) first priming paint is polished step: after first of priming paint drying, need to using the rotary uniform force application of P400 sand paper and
Comprehensively dry type half is refined to 15~20 μm of thickness of dry film；And cleaned using cleaning agent, compressed air dries up surface.
5) priming paint coating step (selection step): after first of priming paint is dried, checking surface of the paint film, as discovery has needle
The defect in hole and pit class then carries out priming paint coating.I.e. using in medical needle locally injecting priming paint to pin hole and pit, carry out
± 3 DEG C of temperature drying of 80 DEG C of part, the polishing of P600 sand paper, cleaning agent cleaning and compressed air drying.
6) second basecoat paint step: using step with first of basecoat paint step；Spray 30~35 μ of thickness of dry film
M (thickness before polishing).
7) it second priming paint polishing step: after first of priming paint drying, need to rotatably be exerted a force using P600~P800 sand paper
Uniformly and comprehensively dry type half is refined to 35~45 μm of dry film overall thickness；And cleaned using cleaning agent, compressed air dries up surface.
8) it first of varnish spraying process: uses in W-101 spray gun (rock field), aerial spraying carbon fiber dedicated transparent varnish.
Spray pressure 0.4MPa, nozzle diameter 1.3mm, 0.4~0.5m/s of spraying rate, nozzle is to being painted surface vertical range 15cm
~20cm, sprays the folded rifle spacing 40mm~60mm in path, 25 ± 4 DEG C of environment temperature, relative humidity 70% ± 5%RH, wet to touch
Twice of wet spray, 2~3 minutes dry, 10~15min of levelling surface drying time is dodged between the spraying of twice paint film；First of varnish spraying
40~50 μm of thickness of dry film (thickness before polishing).
9) first of varnish baking procedure: first of varnish toasts 45min at a temperature of 80 DEG C ± 3 DEG C.
10) it first of varnish polishing step: after first of varnish drying, need to be milled to using P1000~P1500 sand paper superfinishing
70~90 μm of dry film overall thickness；And cleaned using cleaning agent, compressed air dries up surface.
11) second varnish spraying process: environment and spray gun are arranged with first of varnish, only spray one time；Spray dried film thickness
30~45 μm of degree；
12) second varnish baking procedure: 30min is toasted at a temperature of 80 DEG C ± 3 DEG C.
13) polishing step: polished surface, 100~135 μm of dry film overall thickness.
Embodiment
Automobile carbon fiber/epoxy resin composite material front hatch cover is typical exterior trimming parts, and visible surface outside plate uses carbon fiber
The production of dimension/epoxy resin composite material, use it is clear-coated the production method is as follows:
1. pretreatment of base material step:
Using the rotary uniform force application of P320 sand paper (3M Products, similarly hereinafter), comprehensively dry type corase grinding is sprayed-on surface
To matt state, remove article surface release agent, do not hurt carbon fiber base material, make its surface tension value reach 48 dynes with
On；
2. first of basecoat paint step
Using SATA jet 100B F RP spray gun, the dedicated transparent priming paint (model of aerial spraying carbon fibre composite
For CF-1000 dual-component polyurethane low temperature priming paint, producer is Hunan Xiangjiangguanxi Coating Co., Ltd), spray pressure 0.4MPa,
Nozzle diameter 1.6mm, 0.4~0.5m/s of spraying rate, nozzle spray path to surface vertical range 15cm~20cm is painted
Folded rifle spacing 40mm~60mm, 25 ± 4 DEG C of environment temperature, 70% ± 5%RH of relative humidity, levelling surface drying time 10~
15min；35~40 μm of thickness of dry film.
3. first of priming paint baking procedure: first of priming paint toasts 30min at a temperature of 80 DEG C ± 3 DEG C.
The step 4. first priming paint is polished: after first of priming paint drying, need to using the rotary uniform force application of P400 sand paper and
Comprehensively dry type half is refined to 15~20 μm of thickness of dry film；Dust is cleaned using cleaning agent (isopropanol, similarly hereinafter), and empty with compression
Surface is done in air-blowing.
5. priming paint coating step (selection step): after first of priming paint is dried, surface of the paint film is checked, as discovery has needle
The defect in hole and pit class then carries out priming paint coating, using in medical needle locally injecting priming paint to pin hole and pit, levelling
3min, ± 3 DEG C of temperature in 80 DEG C of part toast 15-20min；It is empty that the polishing of P600 sand paper, cleaning agent cleaning and compression are carried out after drying
Air-blowing is dry.
6. second basecoat paint step: using step with first of basecoat paint step；Spray 30~35 μ of thickness of dry film
M (thickness before polishing).
The step 7. second priming paint is polished: it after first of priming paint drying, need to rotatably be exerted a force using P600~P800 sand paper
Uniformly and comprehensively dry type half is refined to 35~45 μm of dry film overall thickness；And cleaned using cleaning agent, compressed air dries up surface.
8. first of varnish spraying process: using in W-101 spray gun (rock field), aerial spraying carbon fiber dedicated transparent varnish
(model CF-9000 dual-component polyurethane low temperature varnish, producer is Hunan Xiangjiangguanxi Coating Co., Ltd).Spray pressure
0.4MPa, nozzle diameter 1.3mm, 0.4~0.5m/s of spraying rate, nozzle to being painted surface vertical range 15cm~20cm,
The folded rifle spacing 40mm~60mm in spraying path, 25 ± 4 DEG C of environment temperature, 70% ± 5%RH of relative humidity；Wet on wet spraying two
Time, 2~3 minutes dry, 10~15min of levelling surface drying time is dodged between twice of paint film spraying；First of varnish sprays thickness of dry film
40~50 μm (thickness before polishing).
9. first of varnish baking procedure: first of varnish toasts 45min at a temperature of 80 DEG C ± 3 DEG C.
The step 10. first of varnish is polished: it after first of varnish drying, need to be milled to using P1000~P1500 sand paper superfinishing
70~90 μm of dry film overall thickness；And cleaned using cleaning agent, compressed air dries up surface.
11. second varnish spraying process: environment and spray gun are arranged with first of varnish, only spray one time；Spray dried film thickness
30~45 μm of degree.
12. second varnish baking procedure: toasting 30min at a temperature of 80 DEG C ± 3 DEG C.
13. polishing step: equably smearing white polishing agent comprehensively in coating surface, using polishing machine polished surface, do
100~135 μm of film overall thickness.
Claims (2)
1. a kind of automobile carbon fiber/epoxy resin composite material exterior trimming parts clear varnish coating process, which is characterized in that method packet
Include following steps:
1) pretreatment of base material step: rotatably being exerted a force using P240-P400 sand paper and polished substrate surface, its surface is made
Power reaches 48 dynes or more；
2) basecoat paint step: using 100 B F RP spray gun of SATA jet, and aerial spraying CF-1000 dual-component polyurethane is low
Warm priming paint, spray pressure 0.4MPa, nozzle diameter 1.6mm, 0.4~0.5m/s of spraying rate, nozzle are vertical to surface is painted
Distance 15cm~20cm, sprays the folded rifle spacing 40mm~60mm in path, and 24 ± 4 DEG C of environment temperature, relative humidity 60%~
70%RH, 10~15min of levelling surface drying time；First 35~40 μm of basecoat paint thickness of dry film, second basecoat paint is dry
30~35 μm of film thickness；
3) it priming paint polishing step: after first of priming paint drying, is rotatably exerted a force using P400 sand paper and first of paint film is polishing to
15~20 μm of thickness of dry film；After the drying of second priming paint, second paint film dry type is polishing to using P600~P800 sand paper dry
35~45 μm of film overall thickness；
4) rock field spray gun W-101, aerial spraying CF-9000 dual-component polyurethane low temperature varnish lacquer varnish step: are used；Spraying
Pressure 0.4MPa, nozzle diameter 1.3mm, 0.4~0.5m/s of spraying rate, nozzle to be painted surface vertical range 15cm~
20cm, sprays the folded rifle spacing 40mm~60mm in path, and 25 ± 4 DEG C of environment temperature, 70% ± 5%RH of relative humidity, levelling table
Dry 10~15min of time；First of varnish sprays 40~50 μm of thickness of dry film, and second varnish sprays 30~45 μ of thickness of dry film
m；
5) varnish treated step: after the drying of first varnish, using P1000~P1500 sand paper be polishing to paint film overall thickness 70~
90 μm, 100~135 μm of dry film overall thickness are polished to after the drying of second varnish；
6) priming paint and varnish baking procedure: per pass priming paint toasts 30min at a temperature of 80 DEG C ± 3 DEG C；First of varnish is at 80 DEG C
45min is toasted at a temperature of ± 3 DEG C；Second varnish toasts 30min at a temperature of 80 DEG C ± 3 DEG C.
2. a kind of automobile carbon fiber/epoxy resin composite material exterior trimming parts clear varnish coating side according to claim 1
Method, which is characterized in that it is described to check whether surface of the paint film has the defect of pin hole and pit class after the polishing of per pass priming paint, if having
Defect then carries out priming paint coating, and coating method is to carry out part 80 DEG C ± 3 using medical needle locally injecting priming paint to fault location
The drying of DEG C temperature, the polishing of P600 sand paper, cleaning agent cleaning and compressed air drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811135743.4A CN108993842A (en) | 2018-09-27 | 2018-09-27 | A kind of clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811135743.4A CN108993842A (en) | 2018-09-27 | 2018-09-27 | A kind of clear-coated method of automobile carbon fiber/epoxy resin composite material exterior trimming parts |
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| CN108993842A true CN108993842A (en) | 2018-12-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871611A (en) * | 2021-01-25 | 2021-06-01 | 中车青岛四方机车车辆股份有限公司 | Matte coating process of water-based varnish for resin-based carbon fiber composite material and application of water-based varnish |
| CN113930143A (en) * | 2020-07-13 | 2022-01-14 | 立邦涂料（中国）有限公司 | High-solid-content colored transparent coating composition, preparation method and application thereof |
| CN113996472A (en) * | 2021-10-21 | 2022-02-01 | 东风柳州汽车有限公司 | Spraying tool and exterior trim coating method |
| CN115382740A (en) * | 2022-09-29 | 2022-11-25 | 北京宾理信息科技有限公司 | Coating method for vehicle, coating structure for vehicle, and vehicle |
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| CN104226567A (en) * | 2014-09-26 | 2014-12-24 | 中国电子科技集团公司第五十四研究所 | Coating method of ultraviolet-resistant bright transparent composite coating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930143A (en) * | 2020-07-13 | 2022-01-14 | 立邦涂料（中国）有限公司 | High-solid-content colored transparent coating composition, preparation method and application thereof |
| CN112871611A (en) * | 2021-01-25 | 2021-06-01 | 中车青岛四方机车车辆股份有限公司 | Matte coating process of water-based varnish for resin-based carbon fiber composite material and application of water-based varnish |
| CN113996472A (en) * | 2021-10-21 | 2022-02-01 | 东风柳州汽车有限公司 | Spraying tool and exterior trim coating method |
| CN115382740A (en) * | 2022-09-29 | 2022-11-25 | 北京宾理信息科技有限公司 | Coating method for vehicle, coating structure for vehicle, and vehicle |
| CN115382740B (en) * | 2022-09-29 | 2023-09-22 | 北京宾理信息科技有限公司 | Coating method for vehicle, coating structure for vehicle and vehicle |
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Application publication date: 20181214 |
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