CN106290063A - A kind of coating breaks film measuring method - Google Patents
A kind of coating breaks film measuring method Download PDFInfo
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- CN106290063A CN106290063A CN201510249191.XA CN201510249191A CN106290063A CN 106290063 A CN106290063 A CN 106290063A CN 201510249191 A CN201510249191 A CN 201510249191A CN 106290063 A CN106290063 A CN 106290063A
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- finish paint
- varnish
- coating
- measuring method
- film measuring
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Abstract
The present invention relates to automobile coating field, particularly relate to a kind of coating and break film measuring method and application thereof.The present invention provides a kind of coating to break film measuring method, comprises the steps: 1) the plate surface spray paint that is coated with in scribbling, sheet material is set level after spray by finish paint, is being coated with the plate surface dropping varnish of finish paint；2) after varnish is added dropwise to complete, sheet material is put to vertical position, toast after levelling；3) observe after baking whether finish paint and varnish have fracture or send out mist and mix the phenomenon of layer, to judge the active force between intermolecular forces and varnish and the finish paint of finish paint and finish paint and intermiscibility.Coating provided by the present invention film measuring method of breaking can intuitively identify after spraying automobile finishing paint before varnish spraying simultaneously, active force between finish paint and finish paint, and after having sprayed varnish, baking before each time period, varnish is to the active force of finish paint and intermiscibility, it is possible to identify different varnish thickness in the different angles difference to finish paint active force.
Description
Technical field
The present invention relates to automobile coating field, particularly relate to a kind of coating and break film measuring method and application thereof.
Background technology
At the scene of existing automotive lacquer streamline, technical staff finds the car body facade after having sprayed varnish, often occurs
The situation of the crackle that top coat layer causes due to the tenesmus of varnish gravity.Solve this problem often with reference to the catch cropping of finish paint Yu finish paint
Active force firmly and between varnish and finish paint and intermiscibility, but in prior art, a concrete measuring method is not done
Detect these performances.
Specifically, GB/T 6742-1986 the most of the prior art and GB/T 1731-1993, these measuring methods can not
Accurately reflect out the active force between finish paint and the intermolecular forces of finish paint and varnish and finish paint and intermiscibility.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of coating and breaks film measuring method and application thereof,
For solving the problems of the prior art.
For achieving the above object and other relevant purposes, first aspect present invention provides a kind of coating to break film measuring method, including such as
Lower step:
1) the plate surface spray paint being coated with in scribbling, sheet material is set level after having sprayed by finish paint, is being coated with the sheet material of finish paint
Surface dropping varnish；
2) after varnish is added dropwise to complete, sheet material is put to vertical position, toast after levelling；
3) observe finish paint after baking and whether varnish has fracture or a mist to mix the phenomenon of layer, to judge the intermolecular forces of finish paint and finish paint
And the active force between varnish and finish paint and intermiscibility.
The phenomenon that fracture or a mist mix layer is the most serious, then it represents that the intermolecular forces of finish paint and finish paint is the poorest, between varnish and finish paint
Active force and intermiscibility are the poorest.If after Hong Kao, there is discontinuous or slight crack in finish paint paint film, then it represents that act between finish paint and finish paint
Power is the poorest, and slight crack is the biggest, and active force is the least；If after Hong Kao paint film occur definition reduce or color and ambient color have the poorest
Away from, then it represents that the compatibility between varnish and finish paint is the poorest.
Preferably, the thickness of described middle painting is preferably 30-50 μm, and the thickness of described finish paint is preferably 13-25 μm.
Preferably, in described step 1, sheet material is put to level after having sprayed by finish paint the most immediately, then is being coated with finish paint
Plate surface dropping varnish.
Preferably, in described step 1, the concrete grammar of dropping varnish is preferably: after finish paint has sprayed, 55-65s starts to drip
Adding, altogether dropping more than 5 times, every time the time interval of dropping is 55-65s, every time during dropping a sample of dropping or several parts parallel
Sample, the dripping quantity of every part of sample is 0.2ml.
Preferably, in described step 1, dripping at the middle part of sheet material or top, each dropping point is positioned at after sheet material is vertical
Spacing >=2cm on same level line, between each dropping point.
Preferably, during dropping, the viscosity of varnish is preferably working viscosity, those skilled in the art can determine according to the kind of varnish and
Adjusting the working viscosity of varnish, the varnish viscosity more having a choosing is: the 24-26 second/#4FORDCUP/20 DEG C.
Preferably, in described step 2, the when that sheet material being erected, need to ensure that varnish flows straight down, specifically can use
Method can be by sheet material both sides keep sustained height, erect rapidly.
Preferably, in described step 2, flow time is 110-130s, more preferably 115-125s, and baking temperature is 135-145s,
The time of baking is 19.5-20.5min.
Second aspect present invention provides described coating to break the film measuring method purposes at automotive coatings detection field.
Preferably, described purposes is specially in the active force measured between finish paint and intermolecular forces and varnish and the finish paint of finish paint and phase
Purposes in dissolubility.
Coating provided by the present invention breaks, and film measuring method can intuitively identifying varnish after spraying automobile finishing paint sprays it simultaneously
Before, the active force between finish paint and finish paint, and each time period after having sprayed varnish, before baking, varnish is to finish paint
Active force and intermiscibility, it is possible to identify different varnish thickness in the different angles difference to finish paint active force, thus give ability
Field technique personnel improve the interlaminar action power between finish paint and finish paint, solve owing to finish paint intermolecular forces is less between varnish and finish paint,
The problem of the finish paint tomography caused under varnish action of gravity provides reliable, an easy approach.
Accompanying drawing explanation
Fig. 1 is shown as the embodiment of the present invention 1 experimental technique schematic diagram.
Fig. 2 is shown as the embodiment of the present invention 2 experimental technique schematic diagram.
Fig. 3-Fig. 5 is shown as experimental result schematic diagram of the present invention.
Detailed description of the invention
After car body facade varnish has sprayed, often cause top coat layer that crackle occurs due to the tenesmus of varnish gravity.This
Coating intermolecular forces when bright inventor is by measuring car paint wet film state, reached to measure the intermolecular forces of finish paint and finish paint and
Active force between varnish and finish paint and the purpose of intermiscibility, thus provide a kind of coating simple, efficient and break film measuring method,
Complete the present invention on this basis.
The present invention provides a kind of coating to break film measuring method, comprises the steps:
1) the plate surface spray paint being coated with in scribbling, sheet material is set level after having sprayed by finish paint, is being coated with the sheet material of finish paint
Surface dropping varnish；
Coating provided by the present invention breaks in film measuring method, and the kind for sheet material is not particularly limited, as long as not to the present invention
Goal of the invention produce limit.Preferably can use the various automobile sheet material in this area, in a preferred embodiment,
The sheet material used is A4 tinplate.
Coating provided by the present invention breaks in film measuring method, can be selected for the various middle painting in this area, finish paint, varnish, this area skill
Art personnel can according in be coated with and the kind of finish paint, suitably adjust and plate surface be coated with and the thickness of finish paint, the thickness of described middle painting is excellent
Electing 30-50 μm as, the thickness of described finish paint is preferably 13-25 μm, and in an embodiment of the present invention, the thickness of middle painting is 35
μm, the thickness of finish paint is 18 μm.Sheet material is put to level after having sprayed by finish paint the most immediately, then is being coated with finish paint
Plate surface dropping varnish, dropping varnish concrete grammar be preferably: preferably after finish paint spray 55-65s start drip,
Dropping more than 5 times the most altogether, the preferred time interval of dropping is 55-65s every time, when dripping, can drip a sample every time,
Also can drip several parts of parallel sample, the dripping quantity of every part of sample is preferably 0.2ml ± 0.02ml, in an embodiment of the present invention, often
Part sample drop dosage is 0.2ml, every time 6 parts of parallel sample of dropping.Should select suitably highly to drip during dropping varnish, with
Ensure that being added dropwise to complete rear varnish has enough height to carry out levelling at plate surface, preferably carries out at the middle part of sheet material or top dripping
Add, and each dropping point sheet material vertically after be positioned on same level line, the spacing between each dropping point preferably >=2cm, the most adjacent
Two paints drip and can fuse mutually, and the varnish current mark after erecting may intersect.It is careful not to drip bubble when of dripping varnish
Enter in dripping to varnish paint.During dropping, the viscosity of varnish is preferably working viscosity,
Those skilled in the art can determine and adjust the working viscosity of varnish according to the kind of varnish, and those skilled in the art can basis
The actual requirement of product determines that tested varnish viscosity, preferred varnish viscosity are: the 24-26 second/#4FORDCUP/20 DEG C.
2) after varnish is added dropwise to complete, sheet material is put to vertical position, toast after levelling；Preferably, the when that sheet material being erected,
Need to ensure that varnish flows straight down, the method that specifically can use can be that sheet material both sides are kept sustained height, erects rapidly.
Coating provided by the present invention breaks in film measuring method, and those skilled in the art can adjust stream according to the kind of coating to be measured
The condition of gentle baking.Preferably flow time is 110-130s, and baking temperature is 135-145 DEG C, and the time of baking is
19.5-20.5min (keeps).
3) observe finish paint after baking and whether varnish has fracture or a mist to mix the phenomenon of layer, to judge the intermolecular forces of finish paint and finish paint
And the active force between varnish and finish paint and intermiscibility.
The phenomenon that fracture or a mist mix layer is the most serious, then it represents that the intermolecular forces of finish paint and finish paint is the poorest, between varnish and finish paint
Active force and intermiscibility are the poorest.If after Hong Kao, there is discontinuous or slight crack in finish paint paint film, then it represents that act between finish paint and finish paint
Power is the poorest, and slight crack is the biggest, and active force is the least；If after Hong Kao paint film occur definition reduce or color and ambient color have the poorest
Away from, then it represents that the compatibility between varnish and finish paint is the poorest.
Coating provided by the present invention break film measuring method can intuitively identify simultaneously the active force between finish paint and finish paint and
Each time period after having sprayed varnish, the varnish active force to finish paint, it is possible to identify different varnish thickness in different angles pair
The difference of finish paint active force.
The present invention further provides described coating to break the film measuring method purposes at automotive coatings detection field, be preferably in measuring surface
Active force between paint and the intermolecular forces of finish paint and varnish and finish paint and the purposes in intermiscibility.
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by disclosed by this specification
Content understand other advantages and effect of the present invention easily.The present invention can also be added by the most different detailed description of the invention
To implement or application, the every details in this specification can also be based on different viewpoints and application, in the essence without departing from the present invention
Various modification or change is carried out under god.
It should be clear that the conventional equipment in the not concrete process equipment indicated or device all use this area in the following example or device；
All force value and scope are all referring to absolute pressure.
In addition, it is to be understood that the one or more method steps mentioned in the present invention do not repel before and after described combination step all right
There is additive method step or additive method step can also be inserted, except as otherwise noted between these steps specifically mentioned；
Should also be understood that the combination annexation between the one or more equipment/devices mentioned in the present invention is not repelled to set in described combination
Other equipment/devices can also be there are before and after standby/device or can also be inserted it between these two equipment/devices specifically mentioned
His equipment/device, except as otherwise noted.And, except as otherwise noted, the numbering of various method steps only differentiates various method steps
Convenient tool, rather than for limit various method steps ordering or limit the enforceable scope of the present invention, its relativeness
It is altered or modified, in the case of without essence change technology contents, when being also considered as the enforceable category of the present invention.
Embodiment 1
1, scribbling OP-308105 (grey), the A4 steel plate sheet material that film thickness monitoring is coated with in 30～40 μm is spraying SPM-350
1F7 (TFTM1), thickness is the finish paint of 15～20 μm, and sheet material is set level, at interval of one point above sheet material by timing at once
Clock dropper drips the varnish of six working viscosities, and (MAC O-1810 coating varnish drips a varnish paint and to be spaced two centimeters when drip
Above, the most adjacent two paints drip and can fuse mutually, and the varnish current mark after erecting may intersect, after sheet material is holded up,
Varnish paint drips and need to be careful not to be added dropwise to bubble when of dripping varnish during varnish paint drips on a horizontal line), see Fig. 1.
2, after dripping off the 5th point, it is made to erect at once, the when that sheet material being erected, sheet material both sides sustained height to be kept,
Erect rapidly, it is ensured that varnish flows straight down, continue levelling and carry out after two minutes toasting (140 DEG C × 20min)；
Whether the state 3, observing finish paint and varnish after baking has fracture or a mist to mix the phenomenon of layer.
Coat type and the experimental result of each experimental group are as shown in table 1.
Embodiment 2
Profiling experimental technique:
One, varnish ladder (operation temperature is 23 DEG C～25 DEG C, and humidity is 65-75%)
1, first first spraying OP-308105 (grey) on A4 tinplate, film thickness monitoring is in 30～40 μm nominal film thickness
It is coated with, is then converted into the shape of notch cuttype (as shown in Figure 2), sticks A, B thickness bar.
2, in coat spraying SPM-3501F7 (TFTM1), film thickness monitoring is in 15～20 μm, the base (face of nominal film thickness
Paint), take thickness bar A off, after dodging dry 5mins, spray MAC O-1810 coating varnish, spray gradient thickness thereon
Varnish, takes thickness bar B (varnish thickness 30～60um) off.
3,140 DEG C × 20mins baking after levelling 7mins, whether the varnish observing C region departs from finish paint or has slight crack.
Two, finish paint ladder (operation temperature is 23 DEG C～25 DEG C, and humidity is 65-75%)
1, on A4 tinplate, first first spray the middle painting of OP-308105 (grey) nominal film thickness of 30～40 μm, then roll over
The shape (as shown in Figure 2) of Cheng Shangtu, sticks A, B thickness bar.
2, spraying SPM-3501F7 (TFTM1) on 1, thickness increases to the base (face of 25 μm ladder thickness from 13 μm
Paint), to take thickness bar B off, dodge dry 5mins, spray MAC O-1810 coating varnish, thickness is for controlling at 30～40 μm covers
The varnish of upper nominal film thickness, then takes thickness bar A off.
3,140 DEG C × 20mins baking after levelling 7mins, whether the varnish observing C region departs from finish paint or has slight crack.
Profiling experiment points for attention are as follows:
1, the varnish ladder stage, spraying varnish ladder thickness when, do a sheet material similar to Fig. 2 shape block,
The most also want so the when of topcoating ladder thickness.
2, to ensure during spraying that the thickness of each of imitative type is the same, C region time special as far as possible.
3, note taking off the sequencing of thickness bar A, B.
4, test under the conditions of being maintained at constant temperature and humidity.
Coat type and the experimental result of each experimental group are as shown in table 1.
Table 1
From the experimental result of Fig. 3-Fig. 5 it can be seen that coating provided by the present invention break film measuring method can be simply and effectively
Reflect the fracture of finish paint and varnish or send out mist and mix the phenomenon of layer, with judge the intermolecular forces of finish paint and finish paint and varnish and finish paint it
Between active force and intermiscibility.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any it is familiar with this skill
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage of art.Therefore, such as
All that in art, tool usually intellectual is completed under without departing from disclosed spirit and technological thought etc.
Effect is modified or changes, and must be contained by the claim of the present invention.
Claims (10)
1. coating breaks a film measuring method, comprises the steps:
1) the plate surface spray paint being coated with in scribbling, sheet material is set level after having sprayed by finish paint, is being coated with the sheet material of finish paint
Surface dropping varnish；
2) after varnish is added dropwise to complete, sheet material is put to vertical position, toast after levelling；
3) observe finish paint after baking and whether varnish has fracture or a mist to mix the phenomenon of layer, to judge the intermolecular forces of finish paint and finish paint
And the active force between varnish and finish paint and intermiscibility.
2. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that the thickness of described middle painting is 30-50 μm,
The thickness of described finish paint is 13-25 μm.
3. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that in described step 1, the tool of dropping varnish
Body method is preferably: after finish paint has sprayed, 55-65s starts dropping；
And/or, the dripping quantity of every part of sample is 0.18-0.22ml；And/or, the time interval of dropping is 55-65s every time.
And/or, dropping more than 5 times altogether.
4. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that in described step 1, at the middle part of sheet material
Or top drips, each dropping point is positioned on same level line after sheet material is vertical, the spacing between each dropping point
≥2cm。
5. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that during dropping, the viscosity of varnish is working viscosity.
6. coating as claimed in claim 5 a kind of breaks film measuring method, it is characterised in that the viscosity of described varnish is: the 24-26 second
/#4FORDCUP/20℃。
7. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that in described step 2, flow time is
110-130s。
8. coating as claimed in claim 1 a kind of breaks film measuring method, it is characterised in that baking temperature is 135-145 DEG C, baking
Time be 19.5-20.5min.
9. the coating as described in claim 1-8 any claim breaks the film measuring method purposes at automotive coatings detection field.
10. purposes as claimed in claim 9, it is characterised in that described purposes be specially measure automobile finish paint and finish paint it
Active force between intermolecular forces and varnish and finish paint and the purposes in intermiscibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249191.XA CN106290063A (en) | 2015-05-15 | 2015-05-15 | A kind of coating breaks film measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249191.XA CN106290063A (en) | 2015-05-15 | 2015-05-15 | A kind of coating breaks film measuring method |
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| CN106290063A true CN106290063A (en) | 2017-01-04 |
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| CN201510249191.XA Pending CN106290063A (en) | 2015-05-15 | 2015-05-15 | A kind of coating breaks film measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444138A (en) * | 2018-11-11 | 2019-03-08 | 廊坊立邦涂料有限公司 | A kind of detection method of coating paint film slight crack |
| CN111413251A (en) * | 2019-01-08 | 2020-07-14 | 上海深竹化工科技有限公司 | Leveling property testing method of leveling agent for coating |
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| CN101403737A (en) * | 2007-12-27 | 2009-04-08 | 奇瑞汽车股份有限公司 | Vehicle paint sagging experiment board and test method |
| CN203658236U (en) * | 2013-12-06 | 2014-06-18 | 上海依多科化工有限公司 | Detecting device for adhesive force of water-based damping coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101403737A (en) * | 2007-12-27 | 2009-04-08 | 奇瑞汽车股份有限公司 | Vehicle paint sagging experiment board and test method |
| CN203658236U (en) * | 2013-12-06 | 2014-06-18 | 上海依多科化工有限公司 | Detecting device for adhesive force of water-based damping coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444138A (en) * | 2018-11-11 | 2019-03-08 | 廊坊立邦涂料有限公司 | A kind of detection method of coating paint film slight crack |
| CN111413251A (en) * | 2019-01-08 | 2020-07-14 | 上海深竹化工科技有限公司 | Leveling property testing method of leveling agent for coating |
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Application publication date: 20170104 |