CN101403737A - Vehicle paint sagging experiment board and test method - Google Patents
Vehicle paint sagging experiment board and test method Download PDFInfo
- Publication number
- CN101403737A CN101403737A CNA2007101255296A CN200710125529A CN101403737A CN 101403737 A CN101403737 A CN 101403737A CN A2007101255296 A CNA2007101255296 A CN A2007101255296A CN 200710125529 A CN200710125529 A CN 200710125529A CN 101403737 A CN101403737 A CN 101403737A
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- sagging
- paint
- hole
- breadboard
- holes
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- 239000003973 paint Substances 0.000 title claims abstract description 39
- 238000007665 sagging Methods 0.000 title claims abstract description 34
- 238000010998 test method Methods 0.000 title claims description 10
- 238000002474 experimental method Methods 0.000 title claims description 7
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000013459 approach Methods 0.000 abstract 1
- 238000001962 electrophoresis Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000011056 performance test Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides an automobile paint anti-sagging testing plate which is identical to an automobile steel plate, has a smooth surface, and is processed by electrophoresis; the testing plate is characterized in that a group of holes with the same spacing and the same aperture are arranged on the testing plate from top to bottom; and the dimension design of the aperture and the spacing of the holes is determined according to the length allowable value of the sagging. The invention also provides an automobile paint anti-sagging testing method, comprising the steps as follows: the testing plate is vertically arranged on an injection plate bracket and coated with paint uniformly from top to bottom according to the automobile coating process parameters; the coating is in gradient so as to form different coating thickness from top to bottom; the coating is not stopped till sagging appears in a certain hole and the lower hole edge; drying is carried out according to the paint drying specification; and the dry coating thickness correspondingly from the upper hole edge to the lower hole edge when the sagging appears initially is used for expressing the sagging limit of the paint material. The method approaches the practical construction process, has strong practicability and good operability and can carry out the anti-sagging performance test of different paints.
Description
Technical field
The present invention relates to a kind of paint flow test unit and method of testing, particularly relate to a kind of vehicle paint sagging experiment board and method of testing.
Background technology
Car coating belongs to the advanced industrial application, and in the work progress of paint, paint film disadvantages such as sagging, trickling appear in regular meeting, and especially positions such as the facade of vehicle body and hole, edge because action of gravity and edge gather effect, go wrong especially easily.Therefore, the anti-sag performance of detection material of paint seems then particularly important.Present method of testing has two kinds, and a kind of is by its rheology/thixotropic property of instrument detecting such as flow graph, the sag resistance of indirect reflection material.The weak point of this method is need instrument, the equipment of bigger investment, and physical and chemical index value and the practice of construction situation measured not to have direct corresponding relation.Another kind method is to adopt many grooves blade coating device, uses knife coating to measure the sag resistance of paint, generally is suitable for industrial coating, specifically sees the description in GB/T9264-88 " mensuration of the colored paint flow " standard.Weak point is that this breadboard and method can not be simulated the spraying method that car coating adopts.
Summary of the invention
The objective of the invention is to deficiency, a kind of vehicle paint sagging experiment board and method of testing are provided at the prior art existence.It can effectively measure the sag resistance of automotive paints material, can meet present car coating technology, and is quick, easy, for the construction of painting provides reliable reference, solves the existing not strong problem of method of testing specific aim.
Technical scheme of the present invention is: a kind of vehicle paint sagging experiment board, and with the vehicle body steel plate, surfacing, and through electrophoretic process; It is characterized in that: the hole that one group of uniform distances, same apertures are arranged from top to down at the plate face.The size design of aperture, pitch-row is determined according to the length allowable value (can modify processing) that sagging takes place.Described aperture value 8-10 millimeter, described pitch of holes value 8-20 millimeter.8 millimeters of preferred aperture values, 18 millimeters of preferred pitch of holes values.
For better testing automobile paint sag resistance, the hole that side lamp, handle etc. are located before the Kong Yaoyu automobile from top to bottom of breadboard middle part, and edge situations such as vehicle body wing letter stencil, door limit, shirt rim adapt.
A kind of automotive paints sag resistance method of testing comprises the steps:
1., breadboard vertically is placed on the spray board mount (angle of inclination is less than 5 °), press car body coating technological parameter spray paint one time equably from top to bottom;
2., place after 5 minutes, down spray again one time from the 3rd hole from top to down; The rest may be inferred, and spraying in gradient just forms different coating thicknesses from top to bottom, sagging occurs until certain hole and edge, following hole; During spraying, being controlled at edge, five holes, the 3rd hole to the, to begin to occur sagging be good, and should spray more than twice at least;
3., place after 10 minutes, dry by the paint drying standard;
4., represent the sagging limit (anti-sag performance) of this material of paint from last bore edges to the paint film build of bore edges correspondence down, represent with μ m with occurring sagging at first.
Test philosophy: the paint gradient of normal construction viscosity is sprayed on vertical breadboard surface, when wet-film thickness reaches certain limit, film defects such as sagging will occur, measure the film thickness of correspondence when producing the sagging defective, promptly represent this paint anti-sag performance (the sagging limit).
Good effect of the present invention is and since adopt the plate face have from top to down one group of uniform distances, same apertures the hole breadboard and adopt the gradient spraying, forms different coating thicknesses from top to bottom, sagging occurs until certain hole and edge, following hole, so have:
1., the present invention fits tightly practical construction process, and is practical, overcome the not strong problem of previous methods specific aim;
2., the inventive method good operability, easy, and can carry out the test of different paints anti-sag performance;
3., breadboard of the present invention processing is simple and easy, cost is low.
Below with reference to drawings and Examples, the present invention is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is an anti-sag performance breadboard organigram.
Among the figure: 1. breadboard, 2. first hole, 3. second hole, 4. the 3rd hole, 5. the 4th hole, 6. the 5th hole.
Embodiment
Embodiment is the making of anti-sag performance breadboard.
As shown in Figure 1, a kind of vehicle paint sagging experiment board 1, with the vehicle body steel plate, surfacing, and through electrophoretic process; At the plate face hole of one group of uniform distances, same apertures is arranged from top to down, as first hole 2, second hole 3, the 3rd hole 4, the 4th hole 5, the 5th hole 6.
The size design of aperture, pitch-row is determined according to the length allowable value (can modify processing) that sagging takes place.Described aperture value 8-10 millimeter, described pitch of holes value 8-20 millimeter.8 millimeters of preferred aperture values, 18 millimeters of preferred pitch of holes values.Require: the edge in hole is smooth smooth, no burr.
Plate middle part row's aperture from top to bottom is to be used for the hole that side lamp before the simulated automotive, handle etc. are located, and edge situations such as vehicle body wing letter stencil, door limit, shirt rim, is the position of high spot reviews.
The test implementation example is the sagging limit test of material of paint.
The concrete operations step:
1., with breadboard vertically be placed on the spray board mount on (angle of inclination is less than 5 °), spray equably from top to bottom one time by the car body coating technological parameter;
2., place after 5 minutes, down spray again one time from the 3rd hole from top to down, the rest may be inferred, walk 7 rifles as paint sprayer first road, 6 rifles are walked in second road, and 5 rifles are walked in the 3rd road ..., in gradient, just form different coating thicknesses from top to bottom, sagging occurs until certain hole and edge, following hole; During spraying, being controlled at edge, five holes, the 3rd hole to the, to begin to occur sagging be good, and should spray more than twice at least;
3., place after 10 minutes, dry by the paint drying standard;
4., represent the sagging limit (anti-sag performance) of this material of paint from last bore edges to the paint film build of bore edges correspondence down, represent with μ m with occurring sagging at first.
Claims (6)
1, a kind of vehicle paint sagging experiment board, with the vehicle body steel plate, surfacing, and through electrophoretic process; It is characterized in that: the hole that one group of uniform distances, same apertures are arranged from top to down at the plate face.
2, breadboard according to claim 1 is characterized in that: described aperture value 8-10 millimeter, described pitch of holes value 8-20 millimeter.
3, breadboard according to claim 2 is characterized in that: 8 millimeters of described aperture values, 18 millimeters of pitch of holes values.
4, breadboard according to claim 1 is characterized in that: the hole that side lamp, handle etc. are located before the Kong Yaoyu automobile from top to bottom of described breadboard middle part, and edge situations such as vehicle body wing letter stencil, door limit, shirt rim adapt.
5, a kind of automotive paints sag resistance method of testing comprises the steps:
1., breadboard vertically is placed on the spray board mount, press car body coating technological parameter spray paint one time equably from top to bottom;
2., place after 5 minutes, down spray again one time from the 3rd hole from top to down; The rest may be inferred, and spraying in gradient just forms different coating thicknesses from top to bottom, sagging occurs until certain hole and edge, following hole;
3., place after 10 minutes, dry by the paint drying standard;
4., represent the sagging limit (anti-sag performance) of this material of paint from last bore edges to the paint film build of bore edges correspondence down, represent with μ m with occurring sagging at first.
6, method of testing according to claim 5 is characterized in that: described step 2. in, during spraying, being controlled at edge, five holes, the 3rd hole to the, to begin to occur sagging be good, and should spray more than twice at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101255296A CN101403737A (en) | 2007-12-27 | 2007-12-27 | Vehicle paint sagging experiment board and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101255296A CN101403737A (en) | 2007-12-27 | 2007-12-27 | Vehicle paint sagging experiment board and test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101403737A true CN101403737A (en) | 2009-04-08 |
Family
ID=40537813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101255296A Pending CN101403737A (en) | 2007-12-27 | 2007-12-27 | Vehicle paint sagging experiment board and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101403737A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457478A (en) * | 2014-11-04 | 2015-03-25 | 华晨汽车集团控股有限公司 | Testing tool special for coating body defects |
| CN106198936A (en) * | 2016-08-25 | 2016-12-07 | 刘学红 | Liquid coating volume solids content measures scraper plate and using method thereof |
| CN106290063A (en) * | 2015-05-15 | 2017-01-04 | 廊坊立邦涂料有限公司 | A kind of coating breaks film measuring method |
| CN106596585A (en) * | 2016-12-14 | 2017-04-26 | 立邦涂料(成都)有限公司 | Quick detection method of emulsion paint film cracking |
| CN107101862A (en) * | 2017-06-20 | 2017-08-29 | 巴斯夫上海涂料有限公司 | IP2 coating systems and the method for rapidly judging of site technique matching |
| CN107505435A (en) * | 2017-10-11 | 2017-12-22 | 上海三恩化工有限公司 | Coating container intermediate coat pin hole limit test method |
| CN112730153A (en) * | 2021-02-04 | 2021-04-30 | 江苏凯伦建材股份有限公司 | Portable demonstration method for sagging performance of polyurethane |
-
2007
- 2007-12-27 CN CNA2007101255296A patent/CN101403737A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457478A (en) * | 2014-11-04 | 2015-03-25 | 华晨汽车集团控股有限公司 | Testing tool special for coating body defects |
| CN106290063A (en) * | 2015-05-15 | 2017-01-04 | 廊坊立邦涂料有限公司 | A kind of coating breaks film measuring method |
| CN106198936A (en) * | 2016-08-25 | 2016-12-07 | 刘学红 | Liquid coating volume solids content measures scraper plate and using method thereof |
| CN106596585A (en) * | 2016-12-14 | 2017-04-26 | 立邦涂料(成都)有限公司 | Quick detection method of emulsion paint film cracking |
| CN107101862A (en) * | 2017-06-20 | 2017-08-29 | 巴斯夫上海涂料有限公司 | IP2 coating systems and the method for rapidly judging of site technique matching |
| CN107505435A (en) * | 2017-10-11 | 2017-12-22 | 上海三恩化工有限公司 | Coating container intermediate coat pin hole limit test method |
| CN112730153A (en) * | 2021-02-04 | 2021-04-30 | 江苏凯伦建材股份有限公司 | Portable demonstration method for sagging performance of polyurethane |
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Application publication date: 20090408 |