CN106311578A - Polyethylene material spraying method and application thereof - Google Patents
Polyethylene material spraying method and application thereof Download PDFInfo
- Publication number
- CN106311578A CN106311578A CN201610865529.9A CN201610865529A CN106311578A CN 106311578 A CN106311578 A CN 106311578A CN 201610865529 A CN201610865529 A CN 201610865529A CN 106311578 A CN106311578 A CN 106311578A
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- Prior art keywords
- product
- spraying
- spraying method
- varnish
- polyethylene material
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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
- B05D7/02—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 to macromolecular substances, e.g. rubber
-
- 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
- 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
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
-
- 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
- B05D2507/00—Polyolefins
- B05D2507/01—Polyethylene
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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 invention belongs to the field of automobile spare parts, and particularly relates to a polyethylene material spraying method and application of the polyethylene material spraying method. The polyethylene material spraying method comprises the first step of grinding, the second step of primer spraying, the third step of varnish spraying and the fourth step of colored paint spraying. The invention further provides the application of using the polyethylene material spraying method for surface spraying of a polyethylene material of a hollow structure. According to the polyethylene material spraying method and the application of the polyethylene material spraying method, after grinding, primer spraying, varnish spraying and colored paint spraying are sequentially carried out the polyethylene material to be sprayed, the colored paint and varnish paint film cross test in the China National Standard GB/T 9286-1998 is adopted for the obtained product, and according to the results of the test, the surface adhesive force of the coating meets the requirements; and meanwhile, the surface of the product is flat and smooth after painting, and good in texture. The technical defect that in the prior art, the spraying effect of a hollow blow molding polyethylene automobile protection bar is poor is overcome.
Description
Technical field
The invention belongs to auto-parts field, particularly relate to spraying method and the application thereof of a kind of polythene material.
Background technology
Before and after automobile, end is generally equipped with Bumper (bumper), and Bumper does not only have decoration functions, more importantly: protection
Thick stick may also operate as absorbing and relax foreign impacts power, protection vehicle body and protection vehicle body and the effect of occupant safety function.Existing
The most generally there are being polyethylene hollow blow molding bumper for automobile and traditional acrylonitrile-butadiene-styrene copolymer
Hollow blow molding bumper for automobile.Owing to polyethylene hollow blow molding bumper for automobile is compared to traditional acrylic nitrile-butadiene
Diene-styrene copolymer hollow blow molding Bumper, has the advantage that 1, the density of polythene material is 0.94g/
cm3, the density of acrylonitrile-butadiene-styrene copolymer is 1.05g/cm3, under same volume, use the former product matter
Measure lighter；2, the melt temperature of polythene material is lower, and mobile performance is more preferable, and hollow blow molding performance is more preferable, machine-shaping
Cost is lower；3, polythene material toughness is preferable, and after hollow molding, shock resistance shock-absorbing capacity is preferable, acrylonitrile-butadiene-benzene second
After alkene copolymer hollow molding, fragility is relatively big, collides frangible, and shock resistance shock-absorbing capacity is poor.So, polyethylene hollow blow molding becomes
Type bumper for automobile the most progressively instead of traditional acrylonitrile-butadiene-styrene copolymer hollow blow molding Bumper
But, polyethylene hollow blow molding bumper for automobile of the prior art with the following drawback that: 1, polyethylene
Material is inert material, and surface energy relatively low (less than 40 dynes per centimeter), after hollow molding, the direct coating performance in its surface is poor；
2, being limited in existing Technology by existing, no matter use which kind of material, after hollow blow molding, the apparent condition of product is general
The most poor, mainly show as surface irregularity, direct application need to use the coating that particle diameter is thicker just can cover lacking of its surface
Falling into, but use the coating that particle diameter is thicker, the overall texture of product is poor, improves grade not.As the class of product need to be improved, then
Needing the coating that application particle diameter is thinner, do not carry out the process that polishes flat such as product surface, application rear surface concave-convex sense is obvious.But it is poly-
Vinyl material characteristic determines, its surface polishing more difficulty, need to grind through depth gear as polished flat, expend substantial amounts of artificial one-tenth
This, for concave plane, machine mill cannot polish flat, it is often more important that depth gear mill easily causes product surface napping, no
It is beneficial to the carrying out of follow-up application.From above-mentioned background technology it can be seen that polyethylene hollow blow molding automobile of the prior art
Bumper, is primarily present the technological deficiency of spraying effect difference.
Therefore, develop spraying method and the application thereof of a kind of polythene material, be used for solving in prior art, polyethylene
The technological deficiency of hollow blow molding bumper for automobile spraying effect difference, becomes urgently to be resolved hurrily the asking of those skilled in the art
Topic.
Summary of the invention
In view of this, the invention provides spraying method and the application thereof of a kind of polythene material, be used for solving existing skill
In art, the technological deficiency of polyethylene hollow blow molding bumper for automobile spraying effect difference.
The invention provides the spraying method of a kind of polythene material, described spraying method is:
Step one, polishing, polish to obtain the first product in the top layer of polythene material to be sprayed；
Step 2, spray-applied primer, the top layer spray-applied primer of described first product obtains the second product；
Step 3, lacquer varnish, the top layer lacquer varnish of described second product, obtain third product；
Step 4, spraying colored paint, the top layer spraying colored paint of described third product, obtain product.
Preferably, in described second product, the film thickness of described primer coating is 20～25 μm；Described priming paint is double-component
Priming paint.
Preferably, in described third product, the film thickness of described varnish coat is 25～30 μm；Described varnish is double-component
Varnish.
Preferably, the method for described polishing is: with the sand paper of 400# or 600# to described polythene material table to be sprayed
Layer is polished.
Preferably, before carrying out described step 2 after obtaining described first product, need to be through pretreatment；
The method of described pretreatment is: described first product removing dust successively, destatic and high-temperature flame treatment.
Preferably, before carrying out described step 3 after obtaining described second product, need to be through prebake；
The method of described prebake is: described second product dries 3～5min under the conditions of 70～75 DEG C.
Preferably, before carrying out described step 4 after obtaining described third product, need to dry through curing of coatings, water mill and quiet
Put step.
Preferably, the method that described curing of coatings is dried is: dry 25～30min under the conditions of 60～70 DEG C；
The sand paper specification that described water mill is used is 800#；
The time of described standing is more than 6h.
Preferably, described step 4 also includes: solidification is dried；
Described third product, after spraying colored paint, carries out described solidification baking step, obtains product；
The method that described solidification is dried dries 25～30min under the conditions of being 60～70 DEG C.Present invention also offers a kind of bag
Include the application in the polythene material surface spraying of one underway hollow structure of described spraying method of any of the above.
In sum, the invention provides the spraying method of a kind of polythene material, described spraying method is: step one,
Polishing, polishes to obtain the first product in the top layer of polythene material to be sprayed；Step 2, spray-applied primer, the table of described first product
Layer spray-applied primer obtains the second product；Step 3, lacquer varnish, the top layer lacquer varnish of described second product, obtain third product；Step
Rapid four, spraying colored paint, the top layer spraying colored paint of described third product, obtain product.Present invention also offers a kind of above-mentioned spraying side
Application in the polythene material surface spraying of the underway hollow structure of method.In the technical scheme that the present invention provides, to be sprayed
Polyethylene is successively after polishing, spray-applied primer, lacquer varnish and spraying colored paint, and the product of gained uses GB GB/T9286-
1998 colored paints and the cross cut test of varnish paint film, through inspection, coating surface adhesive force reaches requirement；Meanwhile, application rear surface is put down
Whole smooth, texture is good.Solving in prior art, the technology of polyethylene hollow blow molding bumper for automobile spraying effect difference lacks
Fall into.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
The schematic flow sheet of the spraying method of a kind of polythene material that Fig. 1 provides for the present invention.
Detailed description of the invention
The invention provides spraying method and the application thereof of a kind of vinyl material, be used for solving in prior art, polyethylene
The technological deficiency of hollow blow molding bumper for automobile spraying effect difference.
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
In order to the present invention is described in more detail, below in conjunction with the spraying side of a kind of vinyl material that the present invention is provided by embodiment
Method and application thereof, be specifically described.
Refer to the schematic flow sheet of the spraying method of a kind of polythene material that Fig. 1, Fig. 1 provide for the present invention.
The invention provides the spraying method of a kind of polythene material, for: step one, polishing, polyethylene material to be sprayed
Polish to obtain the first product in the top layer of material；Step 2, spray-applied primer, the top layer spray-applied primer of the first product obtains the second product；Step
Three, lacquer varnish, the top layer lacquer varnish of the second product, obtain third product；Step 4, spraying colored paint, the top layer of third product
Spraying colored paint, obtains product.In the technical scheme that the present invention provides, polyethylene to be sprayed is successively through polishing, spray-applied primer, spraying
After varnish and spraying colored paint, the product of gained uses the cross cut test of GB GB/T9286-1998 colored paint and varnish paint film, draws lattice
The method of inspection is checked, and coating surface adhesive force reaches requirement；Meanwhile, application rear surface flat smooth, texture is good.Solve existing
In technology, the technological deficiency of polyethylene hollow blow molding bumper for automobile spraying effect difference.
For promoting the adhesion of the first product and priming paint, promote the priming paint covering power for the first product simultaneously, this
In bright embodiment, in the second product, the film thickness of primer coating is 20～25 μm；Priming paint is double-component priming paint.
In like manner, for promoting the adhesion of the second product and varnish, promote the varnish covering power for the second product simultaneously,
In the embodiment of the present invention, in third product, the film thickness of varnish coat is 25～30 μm；Varnish is double-component varnish.Bi-component
The high fillibility of varnish, and good levelability, filled and led up the pit of blank surface, especially for irregular surface, relatively
In the technique that blank to carry out depth gear mill before, the method is simple to operate, and operation is short, and product surface quality is preferable, and
Low cost.
For preventing the japanning weak effect caused due to polyethylene surface out-of-flatness to be sprayed, it is simple to follow-up japanning smooth
Carrying out, in the embodiment of the present invention, the method for polishing is: carry out beating to polythene material to be sprayed with the sand paper of 400# or 600#
Mill.Polyethylene surface to be sprayed can slightly be polished by the sand paper of 400# or 600#, reaches the technique effect polished, with
Time, also will not cause polyethylene surface napping to be sprayed.
For optimizing the japanning effect of priming paint further, in the embodiment of the present invention, before carrying out step 2 after obtaining the first product,
Need to be through pretreatment；The method of pretreatment is: the first product removing dust successively, destatic and high-temperature flame treatment.Dedusting and removing
Electrostatic, so that the surface of the first product is more smooth, clean, prevents the more dust of Electrostatic Absorption；Meanwhile, produce first
Thing carries out instantaneous high-temperature flame treatment, can promote the surface energy of the first product, the lifting of surface energy further, can enter one
Step ground optimizes japanning effect.
If varnishing before primed surface is unseasoned, then the working up phenomenon that priming paint can be caused to merge with varnish, cause second
The surface irregularity of product, has a strong impact on the japanning effect of varnish, so, that those skilled in the art are aware that it is known that
Before application varnish, the second product need to be dried.For effectively solving the contradiction between working up bad and production efficiency, improve and produce
Efficiency, in the embodiment of the present invention, have employed wet on wet spraying method, before carrying out step 3 after obtaining the second product, need through
Prebake；The method of prebake is: the second product dries 3～5min under the conditions of 70～75 DEG C.
If upper colored paint, then can cause the fusion of varnish and colored paint, cause the air spots of third product before varnish is the most dry
Whole, affect the japanning effect of follow-up colored paint.Therefore, during reality sprays, varnish to solidify through levelling as far as possible,
Reach to fill the effect of surface crater defect, before application colored paint, third product need to be dried completely.In the embodiment of the present invention,
For accelerating the efficiency of application, before carrying out step 4 after obtaining third product, need to dry through curing of coatings.
Simultaneously as before carrying out step 4, polyethylene surface to be sprayed has gone up priming paint and varnish two-layer paint,
The out-of-flatness that surface is certain will certainly be caused, after drying through curing of coatings, it is also possible to carry out water mill and stand step.Water mill
The technique effect of flattened surface can be played so that the outward appearance coating surface more flat smooth of third product, simultaneously will not be too much
Destroy varnish coat and cause the exposure of polyethylene.Owing to, in water mill step, liquid can be introduced, so, need after water mill to dry up
The liquid of three its surface, meanwhile, standing is dried.
Prioritization scheme further, in the embodiment of the present invention, the method that curing of coatings is dried is: dry under the conditions of 60～70 DEG C
Dry 25～30min；The sand paper specification that water mill is used is 800#；The time stood is more than 6h.
For accelerating spray efficiency, step 4 also includes: solidification is dried；Third product, after spraying colored paint, carries out solid
Change baking step, obtain product；The method that solidification is dried dries 25～30min under the conditions of being 60～70 DEG C.
After obtaining product, can not allowing according to actual use demand and application scenarios, for different products and with
The colored paint of the diverse location spraying different colours of one product.Correspondingly, after upper colored paint, for promoting spray efficiency, optional solid
Change the method dried, make colored paint rapid solidification.
Derive and measuring through technology from technique scheme, it is known that the skill provided by the present invention
Art scheme has the advantage that
1, use the conventional cost effective method being easily achieved, effectively solve the blow moulded polyethyene thin color of Bumper surface spraying
A difficult problem for surface crater can not effectively be filled by paint, and relative to the product appearance of the thick colored paint of spraying, thin colored paint is greatly improved product
Class；
2, utilize the high fillibility of two-component lacquer, and good levelability, fill and lead up the pit of blank surface, the most right
In irregular surface, relative to the technique that blank to carry out depth gear mill before, the method is simple to operate, and operation is short,
Product surface quality is preferable, and low cost；
3, the Bumper face coat that this enforcement obtains, employing GB GB/T9286-1998 colored paint is drawn with varnish paint film
Lattice are tested, and draw the inspection of the lattice method of inspection, and coating surface adhesive force reaches requirement, i.e. cut coating with cutter, existing without substantially coming off
As.
In sum, the invention provides the spraying method of a kind of polythene material, described spraying method is: step one,
Polishing, polishes to obtain the first product in the top layer of polythene material to be sprayed；Step 2, spray-applied primer, the table of described first product
Layer spray-applied primer obtains the second product；Step 3, lacquer varnish, the top layer lacquer varnish of described second product, obtain third product；Step
Rapid four, spraying colored paint, the top layer spraying colored paint of described third product, obtain product.Present invention also offers a kind of above-mentioned spraying side
Application in the polythene material surface spraying of the underway hollow structure of method.In the technical scheme that the present invention provides, to be sprayed
Polyethylene is successively after polishing, spray-applied primer, lacquer varnish and spraying colored paint, and the product of gained uses GB GB/T9286-
1998 colored paints and the cross cut test of varnish paint film, through inspection, coating surface adhesive force reaches requirement；Meanwhile, application rear surface is put down
Whole smooth, texture is good.Solving in prior art, the technology of polyethylene hollow blow molding bumper for automobile spraying effect difference lacks
Fall into.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. the spraying method of a polythene material, it is characterised in that described spraying method is:
Step one, polishing, polish to obtain the first product in the top layer of polythene material to be sprayed；
Step 2, spray-applied primer, the top layer spray-applied primer of described first product obtains the second product；
Step 3, lacquer varnish, the top layer lacquer varnish of described second product, obtain third product；
Step 4, spraying colored paint, the top layer spraying colored paint of described third product, obtain product.
Spraying method the most according to claim 1, it is characterised in that in described second product, the film of described primer coating
Thickness is 20～25 μm；Described priming paint is double-component priming paint.
Spraying method the most according to claim 1, it is characterised in that in described third product, the film of described varnish coat
Thickness is 25～30 μm；Described varnish is double-component varnish.
Spraying method the most according to claim 1, it is characterised in that the method for described polishing is: with 400#'s or 600#
Polished in described polythene material top layer to be sprayed by sand paper.
Spraying method the most according to claim 1, it is characterised in that carry out described step 2 after obtaining described first product
Before, need to be through pretreatment；
The method of described pretreatment is: described first product removing dust successively, destatic and high-temperature flame treatment.
Spraying method the most according to claim 1, it is characterised in that carry out described step 3 after obtaining described second product
Before, need to be through prebake；
The method of described prebake is: described second product dries 3～5min under the conditions of 70～75 DEG C.
Spraying method the most according to claim 1, it is characterised in that carry out described step 4 after obtaining described third product
Before, need to dry through curing of coatings, water mill and standing step.
Spraying method the most according to claim 7, it is characterised in that the method that described curing of coatings is dried is: 60～70
25～30min are dried under the conditions of DEG C；
The sand paper specification that described water mill is used is 800#；
The time of described standing is more than 6h.
Spraying method the most according to claim 1, it is characterised in that described step 4 also includes: solidification is dried；
Described third product, after spraying colored paint, carries out described solidification baking step, obtains product；
The method that described solidification is dried dries 25～30min under the conditions of being 60～70 DEG C.
10. the polythene material table of the underway hollow structure of the spraying method included described in claim 1 to 9 any one
Application in the spraying of face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865529.9A CN106311578B (en) | 2016-09-29 | 2016-09-29 | A kind of spraying method of polythene material and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865529.9A CN106311578B (en) | 2016-09-29 | 2016-09-29 | A kind of spraying method of polythene material and its application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106311578A true CN106311578A (en) | 2017-01-11 |
| CN106311578B CN106311578B (en) | 2019-09-24 |
Family
ID=57821020
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610865529.9A Expired - Fee Related CN106311578B (en) | 2016-09-29 | 2016-09-29 | A kind of spraying method of polythene material and its application |
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| CN110614209A (en) * | 2019-09-06 | 2019-12-27 | 吉利汽车研究院（宁波）有限公司 | Automobile spraying method |
| CN113262965A (en) * | 2021-05-31 | 2021-08-17 | 郭林华 | Processing method special for spraying baking paint on surface of PE blow molding part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110614209A (en) * | 2019-09-06 | 2019-12-27 | 吉利汽车研究院（宁波）有限公司 | Automobile spraying method |
| CN113262965A (en) * | 2021-05-31 | 2021-08-17 | 郭林华 | Processing method special for spraying baking paint on surface of PE blow molding part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106311578B (en) | 2019-09-24 |
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