CN109986411A - SMC article surface processing method and its application - Google Patents
SMC article surface processing method and its application Download PDFInfo
- Publication number
- CN109986411A CN109986411A CN201711470642.8A CN201711470642A CN109986411A CN 109986411 A CN109986411 A CN 109986411A CN 201711470642 A CN201711470642 A CN 201711470642A CN 109986411 A CN109986411 A CN 109986411A
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- article surface
- smc
- smc article
- polishing operation
- processing method
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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
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a kind of SMC article surface processing methods and application this method to carry out the modified method of vehicle bumper face difference.The SMC article surface processing method include: to SMC article surface carry out include the first polishing operation pretreatment procedure；Primer spray process is carried out to the SMC article surface after the pretreatment procedure；Intermediate treatment process is carried out to the SMC article surface after the primer spray process, the intermediate treatment process includes the scraping with atomic ash process successively carried out and spray floating coating process；SMC article surface after the intermediate treatment process is carried out include the second polishing operation postprocessing working procedures.This method is by using the paper glass reinforced plastic process in scraping with atomic ash replaceable operation chain prior art, and using the resin in floating coating substitution prior art as intermediate connection medium, reduce the complexity of entire process flow, surface treatment quality can be promoted while realizing the accurate amendment to SMC article surface, significantly improves the adhesive force of SMC article surface coating.
Description
Technical field
The present invention relates to field of surface treatment more particularly to a kind of SMC article surface processing methods, and apply this method
To carry out the modified method of vehicle bumper face difference.
Background technique
SMC (Sheet molding compound) composite material because its with excellent electrical insulation capability, mechanical performance,
Thermal stability and chemically-resistant anti-corrosive properties, are usually used in making machine part, vehicle, ship etc..For vehicle, SMC is multiple at present
Condensation material is mainly used for making vehicle body, bumper, interior products etc., and bumper would generally design after mounting because of structure, group
Many-sided reason such as dress operation causes the components matched with periphery, and there are face difference phenomenons.Existing face difference corrects process flow
Generally use: polishing, brush resin, Puttying, secondary Puttying, polishing are polished for a plurality of times after papering glass mat and solidification
Process；Its entire makeover process is relatively complicated, and higher to polishing requirement, environmental requirement, operation requirement, by taking polishing as an example,
Sufficiently polishing need to be carried out repeatedly to bumper (specially SMC product) using existing face difference amendment technique, but by SMC product sheet
Body characteristic limitation, it may be assumed that molecular structure is close, surface pore-free, and repeatedly the bumper body sufficiently after polishing is in microcosmic upper reality
On be still unable to reach the surface roughness requirements of hand paste glass reinforced plastic, paper and be difficult to shape between glass mat and bumper body
At effectively combination, the phenomenon that often there is adhesive force deficiency after papering defect and papering and glass reinforced plastic cracking caused to fall off, and not
Yield is up to 30%, seriously affects presentation quality and processing cost.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of SMC article surface processing methods, it is intended to letter
Change the surface treatment process of SMC product, and improves the surface treatment quality of SMC product.
SMC article surface processing method of the invention the technical solution adopted is that:
SMC article surface processing method, this method comprises:
SMC article surface is carried out include the first polishing operation pretreatment procedure；
Primer spray process is carried out to the SMC article surface after the pretreatment procedure；
Intermediate treatment process, the intermediate treatment process packet are carried out to the SMC article surface after the primer spray process
Include the scraping with atomic ash process successively carried out and spray floating coating process；
SMC article surface after the intermediate treatment process is carried out include the second polishing operation postprocessing working procedures.
Further, first polishing operation includes rough grinding process and smart polishing operation；
The rough grinding process is using 60# polished silicon wafer polishing SMC article surface；
SMC article surface of the essence polishing operation using the polishing of 80# sand paper after above-mentioned rough grinding process.
Further, the pretreatment procedure further include the cleaning process that is successively carried out after first polishing operation and
Paste covering material process.
Further, the condition that the primer spray process carries out includes: 5~35 DEG C of paint temperature, and humidity is less than 85%；
The primer spray process includes first time primer spray and second of primer spray, second of primer spray and described the
The time interval of primer spray is 5~10min, and the primer dry films after the primer spray process are with a thickness of 35~45 μm.
Further, the primer spray process further includes the process dried to the SMC article surface after primer spray, institute
The condition for stating baking process progress includes: 70~75 DEG C of drying temperature, soaking time 60min.
Further, the thickness of SMC article surface scraping with atomic ash is needed to correct with SMC product in the scraping with atomic ash process
Deviation thickness be adapted；The floating coating thickness of dry film after the spray floating coating process is 35~70 μm.
Further, poly-putty base includes main putty and curing agent in the scraping with atomic ash process, the main putty with it is described
The quality proportioning of curing agent is 100:2~100:3.
Further, second polishing operation uses the sand paper polishing SMC article surface of 400# or more.
Further, the postprocessing working procedures further include carrying out to the SMC article surface after second polishing operation
Topcoating process.
The present invention also provides a kind of above-mentioned surface treatment methods of application to carry out the modified method of vehicle bumper face difference,
The bumper is SMC product, which carries out the bumper using above-mentioned SMC article surface processing method
Surface treatment.
Based on the above-mentioned technical proposal, SMC article surface processing method of the invention and application this method carry out vehicle guarantor
The modified method of dangerous thick stick face difference, at least has the advantages that compared with the existing technology
The present invention is applied by using the paper glass reinforced plastic process in scraping with atomic ash replaceable operation chain prior art, and in using
Resin in paint substitution prior art reduces the complexity of entire process flow, is based on simultaneously as intermediate connection medium
There is good physics, chemical property after floating coating solidification, adhesion strength is preferable, can not only effectively be attached to SMC product
The defect of surface pore and granular concave injustice is filled up on surface, moreover it is possible to guarantee that the subsequent adhesion property between finishing coat is preferable；This
Outside, the present invention can easily control each coating by using primer spray process and spray floating coating process by the thickness of spraying
Effect avoid convenient for reaching best coating layer thickness to improve the protecting effect to SMC article surface because thickness too thick influence is former
Beginning size and waste coating, or the phenomenon for causing splitting resistance, covering, persistence etc. poor because thickness is too thin, realization pair
Surface treatment quality can be promoted while the accurate amendment of SMC article surface.
Detailed description of the invention
Fig. 1 is a kind of flow chart of SMC article surface processing method provided in an embodiment of the present invention.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, it should be noted that, it can be direct when element is referred to as " being fixed on " or " being set to " another element
On the other element or indirectly on another element.When an element is known as " being connected to " another element,
It can be directly to another element or be indirectly connected on another element.
Referring to Fig.1, a kind of SMC article surface processing method provided in an embodiment of the present invention, this method comprises:
Step S100, SMC article surface is carried out include the first polishing operation pretreatment procedure；
Step S200 carries out primer spray process to the SMC article surface after pretreatment procedure；
Step S300 carries out intermediate treatment process, intermediate treatment process packet to the SMC article surface after primer spray process
Include the scraping with atomic ash process successively carried out and spray floating coating process；
Step S400, the SMC article surface after intermediate treatment process is carried out include the second polishing operation post-processing
Process.
The present invention is applied by using the paper glass reinforced plastic process in scraping with atomic ash replaceable operation chain prior art, and in using
Resin in paint substitution prior art reduces the complexity of entire process flow, is based on simultaneously as intermediate connection medium
There is good physics, chemical property after floating coating solidification, adhesion strength is preferable, can not only effectively be attached to SMC product
The defect of surface pore and granular concave injustice is filled up on surface, moreover it is possible to guarantee that the subsequent adhesion property between finishing coat is preferable；This
Outside, the present invention can easily control each coating by using primer spray process and spray floating coating process by the thickness of spraying
Effect avoid convenient for reaching best coating layer thickness to improve the protecting effect to SMC article surface because thickness too thick influence is former
Beginning size and waste coating, or the phenomenon for causing splitting resistance, covering, persistence etc. poor because thickness is too thin, realization pair
Surface treatment quality can be promoted while the accurate amendment of SMC article surface.
As a preferred embodiment of the present invention, the first polishing operation includes that the rough grinding process successively carried out and essence are beaten
Grinder sequence；
Rough grinding process is using 60# polished silicon wafer polishing SMC article surface；
SMC article surface of the smart polishing operation using the polishing of 80# sand paper after above-mentioned rough grinding process.
Above-mentioned entire first polishing operation preferably carries out in dustless grinding chamber.First polishing operation can effectively change
Kind SMC article surface roughness greatly improves interface diffusion, mechanical mutual that follow-up coating and SMC article surface are formed at interface
The intimate contact degree of lock degree and coating and SMC article surface more plays and guarantees that article surface and the priming paint of subsequent spraying have
The effect of preferable adhesion property.
Specifically in the present embodiment, the polishing thickness of above-mentioned rough grinding process is preferably 1~2mm；Rough grinding is to accessory pinna shape
Lines, the surface roughness of SMC product are Ra10.Under the premise of guaranteeing preferably to be connected subsequent processing, it can improve
Working efficiency.Above-mentioned rough grinding process is preferably using existing angle grinder dress 60# polished silicon wafer polishing SMC article surface；Certainly
Other existing grinding apparatus can be used.
Specifically in the present embodiment, it is dry to be preferably polishing to the release agent whole polishing of SMC article surface for above-mentioned essence polishing operation
Only, SMC article surface is polished into dumb light state, forms uniform sand paper lines, and the surface roughness of SMC product can be reduced to
Ra6.3；Being conducive to subsequent priming paint in this way has preferable coating result in SMC article surface.Above-mentioned essence polishing operation is preferably adopted
It is carried out with existing gas grinding machine combination 80# disk sand paper；Polishing SMC article surface；It existing can certainly be beaten using other
Grind equipment.
Specifically in the present embodiment, above-mentioned pretreatment procedure further includes the cleaner successively carried out after the first polishing operation
Sequence and stickup covering material process.
As a preferred embodiment of the present invention, above-mentioned cleaning process includes the first cleaning process successively carried out and
Two cleaning process；
Wherein, the first cleaning process is handled using organic solvent ultrasonic clean, and organic solvent is dehydrated alcohol, ultrasonic time
For 3~5min；
Second cleaning process is the drying process using compressed air soot-blowing；
Above-mentioned stickup covering material process is using U.S. line paper and masking paper or other existing covering material coverings without spray
The SMC article surface of painting.
Above-mentioned first cleaning process can effectively clear up SMC product table for the existing cleaning using tap water
Corrosion product, burr, oil, rouge, other deposits in face etc. have better cleaning effect；Second cleaning process can dry up
Reach soot blowing secondary clean effect while SMC article surface, to provide optimal sprayed surface for primer spray process.
SMC product after above-mentioned pretreatment procedure is qualified, should primer spray process as early as possible, to further ensure that spraying effect
Preferably.Before formal spraying, preferably requires to prepare a small amount of coating according to coating specification, little sample testing is done on template, with measurement
The parameters such as applicability, film thickness, the drying time of primer spray technique.
As a preferred embodiment of the present invention, the condition that above-mentioned primer spray process carries out includes: paint temperature 5~35
DEG C, humidity is less than 85%；It is learnt through test of many times, primer spray process is carried out using the condition and is conducive to reach preferable coating effect
Fruit.Primer spray process carries out preferably in dustless paint spraying booth, primer painting require uniformly, without holiday, bubble-free, without grumeleuse, nothing
Pin hole.
Better effects under the premise of controlling coating thickness to reach the entire article surface to be sprayed of even application；Make
For a preferred embodiment of the present invention, above-mentioned primer spray process includes first time primer spray and second of primer spray, and second
The time interval of primer spray and first time primer spray is 5~10min；It is further preferably carried out using crossing method in primer spray process
It is in 90 ° of angles between spray gun traffic direction when spraying, i.e. first time primer spray and second of primer spray.
It should be understood that primer spray process further includes the process dried to the SMC article surface after primer spray, dry
The condition that dry process carries out preferably includes: 70~75 DEG C of drying temperature, soaking time 60min；Ensure that priming paint is secured, will not take off
It falls.Make SMC product natural cooling after baking process.
After entire primer spray process, the thickness of dry film of priming paint can be detected by dried paint film calibrator, through primer spray
Primer dry films thickness after process is preferably 35~45 μm；The prime coat thickness constraints of spraying, can be preferably at 35~45 μm
The uneven of product skin granulate is filled, prime coat thickness is also unlikely to excessive after filling, and can be subsequent middle science and engineering
Sequence provides enough basal layers.
As a preferred embodiment of the present invention, to the thickness of SMC article surface scraping with atomic ash in scraping with atomic ash process
And SMC product needs modified deviation thickness to be adapted.Specifically in the present embodiment, the thickness of scraping with atomic ash is preferably 10mm.This
Outside, the floating coating thickness of dry film after spraying floating coating process is preferably 35~70 μm.
It is learnt through test of many times, using the poly-putty base in above-mentioned thickness range and as the floating coating energy of intermediate connection medium
Have the function that optimal form a connecting link.Floating coating layer under the thickness has excellent mobility, levelability, glossiness consistent
Property, and thickness is unlikely to too big.
The thickness between each layer is selected in the embodiment of the present invention, adhesion property and coating can not only be improved to the greatest extent
Effect, moreover it is possible to maximum material saving, and be conducive to achieve the purpose that the accurate tru(e)ing face is poor.
It sprays in floating coating process other than control floating coating thickness of dry film is different from priming paint thickness of dry film in primer spray process,
Remaining spraying conditions, coating, mode of operation, spraying requirement etc. can refer to the progress of primer spray process, and this will not be repeated here.
Specifically in the present embodiment, for vehicle, the paint vehicle of above-mentioned priming paint can use currently used epoxy bottom
Paint, above-mentioned floating coating can be using the paint vehicles to match with priming paint, and this will not be repeated here.
Specifically in the present embodiment, poly-putty base includes main putty and curing agent in scraping with atomic ash process, wherein curing agent
Main component is initiator and plasticizer, can play the role of causing polymerization enhancing performance, be based on its Wuli-Shili-Renli system approach, right
The processing of SMC article surface realizes that opposite difference needs the region repaired to be modified especially by surface treatment process, have compared with
Good effect.
It is above-mentioned for the performance SMC article surface processing preferably for making poly-putty base as a preferred embodiment of the present invention
The quality proportioning of main putty and curing agent is preferably 100:2~100:3.
As a preferred embodiment of the present invention, the second polishing operation uses the sand paper polishing SMC product of 400# or more
Surface.Entire second polishing operation preferably carries out in dustless grinding chamber.Second polishing operation can not only remove in spraying
A small amount of burr of coat of paint rear projection more plays the role of guaranteeing that SMC article surface and finishing coat have preferable adhesion property, together
When, this time polishing can also be played the role of controlling floating coating thickness degree.
Specifically in the present embodiment, the polishing thickness of above-mentioned second polishing operation is preferably 10~15 μm.Second polishing
Process can make the SMC article surface polishing smooth exquisiteness of rear surface, and surface roughness can reach Ra2.5 or so, to ensure subsequent spray
After finishing coat SMC product have lower surface roughness, and be more advantageous to the coating uniformity for improving subsequent finishing coat, finish,
Quality of painting etc., to be correspondingly improved the optimization rate of SMC article surface.
It should be noted that above-mentioned second polishing operation can be implemented using existing grinding apparatus.
Specifically in the present embodiment, it should be appreciated that postprocessing working procedures further include to the SMC after the second polishing operation
The topcoating process that article surface carries out.Condition, materials, mode of operation, spraying requirement of topcoating process etc. can refer to existing
Spray plane lacquer craftwork, be not described in detail here.
By the processing of above-mentioned S100~S400 step, in terms of existing technologies, it can substantially reduce polishing number, pole
The entire process flow of big simplification can easily accurately be improved by the thickness of each coating of control and correct SMC product in other words
Surface thickness, the distribution and selection of each coating can also greatly improve SMC article surface intensity.It is surveyed according to concerned countries standard
Examination learns that the correlated performance for the SMC product that the surface treatment method provided through the embodiment of the present invention obtains is as follows:
1. adhesive force mean value, which can reach adhesive force, can reach 0-1 grades, long-term use process floating coat is firm without the risk that falls off；
The yield of 2.SMC product can reach 100%；
The surface roughness of 3.SMC product can be down to Ra2.5, and roughness and surface smoothness are greatly improved, paint layer
It is uniformly plentiful；
4. durability of coating, corrosion resistance are more excellent.
The present invention also provides a kind of above-mentioned surface treatment methods of application to carry out the modified method of vehicle bumper face difference,
Bumper is SMC product, which carries out at surface bumper using above-mentioned SMC article surface processing method
Reason.
It should be noted that above-mentioned vehicle bumper face difference modification method, due to SMC article surface of the present invention processing side
Method embodiment is based on same design, and bring technical effect is identical as embodiment of the present invention method, and particular content can be found in this
Narration in inventive method embodiment, details are not described herein again.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1.SMC article surface processing method, which is characterized in that this method comprises:
SMC article surface is carried out include the first polishing operation pretreatment procedure；
Primer spray process is carried out to the SMC article surface after the pretreatment procedure；
To after the primer spray process SMC article surface carry out intermediate treatment process, the intermediate treatment process include according to
The scraping with atomic ash process and spray floating coating process of secondary progress；
SMC article surface after the intermediate treatment process is carried out include the second polishing operation postprocessing working procedures.
2. SMC article surface processing method as described in claim 1, which is characterized in that first polishing operation includes thick
Polishing operation and smart polishing operation；
The rough grinding process is using 60# polished silicon wafer polishing SMC article surface；
SMC article surface of the essence polishing operation using the polishing of 80# sand paper after above-mentioned rough grinding process.
3. SMC article surface processing method as described in claim 1, which is characterized in that the pretreatment procedure further include
The cleaning process and stickup covering material process successively carried out after first polishing operation.
4. SMC article surface processing method as described in claim 1, which is characterized in that
The condition that the primer spray process carries out includes: 5~35 DEG C of paint temperature, and humidity is less than 85%；
The primer spray process includes first time primer spray and second of primer spray, second of primer spray and the first time
The time interval of primer spray is 5~10min, and the primer dry films after the primer spray process are with a thickness of 35~45 μm.
5. SMC article surface processing method as described in claim 1, which is characterized in that the primer spray process further includes pair
The process that SMC article surface after primer spray is dried, the condition that the baking process carries out includes: drying temperature 70~75
DEG C, soaking time 60min.
6. SMC article surface processing method as described in claim 1, which is characterized in that SMC in the scraping with atomic ash process
The thickness and SMC product of article surface scraping with atomic ash need modified deviation thickness to be adapted；After the spray floating coating process
Floating coating thickness of dry film is 35~70 μm.
7. SMC article surface processing method as described in claim 1, which is characterized in that atom in the scraping with atomic ash process
Ash includes main putty and curing agent, and the quality proportioning of the main putty and the curing agent is 100:2~100:3.
8. SMC article surface processing method as described in claim 1, which is characterized in that second polishing operation uses
The sand paper polishing SMC article surface of 400# or more.
9. such as SMC article surface processing method described in any item of the claim 1 to 8, which is characterized in that the post-processing work
Sequence further includes the topcoating process carried out to the SMC article surface after second polishing operation.
10. vehicle bumper face difference modification method, which is characterized in that the bumper is SMC product, the vehicle bumper face
Poor modification method is surface-treated the bumper using any one of claims 1 to 9 the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470642.8A CN109986411B (en) | 2017-12-29 | 2017-12-29 | SMC product surface treatment method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470642.8A CN109986411B (en) | 2017-12-29 | 2017-12-29 | SMC product surface treatment method and application thereof |
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| CN109986411A true CN109986411A (en) | 2019-07-09 |
| CN109986411B CN109986411B (en) | 2020-08-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03264336A (en) * | 1990-03-14 | 1991-11-25 | Shigeru Takamori | Composite material and manufacture thereof |
| CN103521773A (en) * | 2013-09-25 | 2014-01-22 | 深圳光韵达光电科技股份有限公司 | Post-processing technology for SLS workpiece surface |
| CN103773216A (en) * | 2012-10-23 | 2014-05-07 | 北京汽车玻璃钢有限公司 | Composition used for SMC product and preparation method for SMC product |
| CN105618349A (en) * | 2014-11-28 | 2016-06-01 | 重庆基石机械有限公司 | Paint coating process |
-
2017
- 2017-12-29 CN CN201711470642.8A patent/CN109986411B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03264336A (en) * | 1990-03-14 | 1991-11-25 | Shigeru Takamori | Composite material and manufacture thereof |
| CN103773216A (en) * | 2012-10-23 | 2014-05-07 | 北京汽车玻璃钢有限公司 | Composition used for SMC product and preparation method for SMC product |
| CN103521773A (en) * | 2013-09-25 | 2014-01-22 | 深圳光韵达光电科技股份有限公司 | Post-processing technology for SLS workpiece surface |
| CN105618349A (en) * | 2014-11-28 | 2016-06-01 | 重庆基石机械有限公司 | Paint coating process |
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