CN106918534A - A kind of rheology detection method of varnish - Google Patents
A kind of rheology detection method of varnish Download PDFInfo
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- CN106918534A CN106918534A CN201710234271.7A CN201710234271A CN106918534A CN 106918534 A CN106918534 A CN 106918534A CN 201710234271 A CN201710234271 A CN 201710234271A CN 106918534 A CN106918534 A CN 106918534A
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- 239000002966 varnish Substances 0.000 title claims abstract description 89
- 238000000518 rheometry Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 42
- 238000004088 simulation Methods 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000010008 shearing Methods 0.000 claims 1
- 238000007665 sagging Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 10
- 239000003973 paint Substances 0.000 description 7
- 238000007689 inspection Methods 0.000 description 5
- 238000010422 painting Methods 0.000 description 5
- 239000004922 lacquer Substances 0.000 description 4
- 241000675108 Citrus tangerina Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- NQBXSWAWVZHKBZ-UHFFFAOYSA-N 2-butoxyethyl acetate Chemical compound CCCCOCCOC(C)=O NQBXSWAWVZHKBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- RSOILICUEWXSLA-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- XQAABEDPVQWFPN-UHFFFAOYSA-N octyl 3-[3-(benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl]propanoate Chemical compound CC(C)(C)C1=CC(CCC(=O)OCCCCCCCC)=CC(N2N=C3C=CC=CC3=N2)=C1O XQAABEDPVQWFPN-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/32—Paints; Inks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of rheology detection method of varnish, comprise the following steps：Step one：Varnish is prepared, varnish is then diluted to execution conditions, tested viscosity, shear rate when simulation coating is stirred, step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing, step 3：Tested viscosity, viscosity B coefficent during simulation spraying, step 4：Tested viscosity, analog stream viscosity B coefficent usually judges whether the rheology of varnish is qualified.The method of the present invention simulates the stressing conditions of spraying and levelling by the viscosity tested under different shear rate, can predict varnish spraying and levelling during viscosity B coefficent, the bad disadvantages such as sagging, orange peel that varnish occurs at the scene are prevented effectively from, so as to judge whether the varnish meets the requirements in advance.
Description
Technical field
The invention belongs to the thixotropy detection method of coating, more particularly to a kind of varnish rheology detection method.
Background technology
During paint spraying, because of coating viscosity B coefficent in itself and flowing and the fluctuation of painting environment, painting is sometimes resulted in
A problem that layer produces sagging or orange peel.
Varnish in paint coatings is higher to its appearance requirement usually as outermost coating.And the thickness of varnish compared with
Thickness, then be easier the phenomenons such as sagging and bad order.The conventional dope viscosity detection method of present each company, such as using viscous
Degree cup, rotation viscometer etc., it is impossible to the thixotropy of accurate measurement coating, improve when paint spraying is constructed and film defect occur
Risk.
In view of this, it is necessary to which a kind of rheology detection method of varnish is provided, it is to predict when varnish is used at the scene
It is no that the bad phenomenons such as sagging and orange peel can occur.
The content of the invention
For the defect of prior art, it is an object of the invention to provide a kind of rheology detection side of varnish simple and easy to apply
Method, it is possible to prevente effectively from the bad phenomenon such as the sagging occurred during the actual application in most of scene and orange peel.
To achieve these goals, the technical solution adopted by the present invention is as follows：
One aspect of the present invention provides a kind of rheology detection method of varnish, comprises the following steps：
Step one：Varnish is prepared, varnish is then diluted to execution conditions, tested viscosity, cutting when simulation coating is stirred
Cutting speed rate；
Step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing；
Step 3：Tested viscosity, viscosity B coefficent during simulation spraying；
Step 4：Tested viscosity, analog stream viscosity B coefficent usually judges whether the rheology of the varnish is qualified.
Preferably, step one medium shear rate is 50-100s-1。
Preferably, the step 2 medium shear rate is 0.05-0.5s-1。
Preferably, the step 3 medium shear rate is 500-2000s-1。
Preferably, the step 4 medium shear rate is 0.01-1s-1。
Preferably, the tested viscosity is tested under conditions of temperature is for 20~25 DEG C.
Preferably, the rheology for judging the varnish it is whether qualified be step 3 simulation spraying when viscosity B coefficent institute
The average value for surveying data is less than 0.2Pa.s, and the maximum of step 4 analog stream viscosity B coefficent the data obtained usually is higher than
5Pa.s。
There is advantages below and beneficial effect due to using above-mentioned technical proposal, the present invention：
The method of the present invention can test viscosity of the varnish under different shear rate, simulation varnish construction feelings at the scene
Condition, so that preferable range of viscosities is obtained, balance coating sagging and levelling at the scene, it is ensured that preferable application outward appearance.According to
The data for measuring, can confirm that varnish under different shear rate, viscosity in what be worth when, levelling is optimal with sagging performance.
The method of the present invention simulates the stressing conditions of spraying and levelling by the viscosity tested under different shear rate, can be with
Viscosity B coefficent during the spraying of prediction varnish and levelling, is prevented effectively from the bad disadvantages such as sagging, orange peel that varnish occurs at the scene,
So as to judge whether the varnish meets the requirements in advance.
Specific embodiment
In order to illustrate more clearly of the present invention, with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, and should not limit this with this
The protection domain of invention.
Embodiment 1
Step one：Prepare varnish a, varnish b, varnish c and varnish d.Lacquer formulation (weight portion) is as shown in table 1：
Table 1
Varnish dimethylbenzene is diluted to execution conditions (applying 4 glasss 32 seconds, 23 DEG C), rheometer, simulation coating stirring is used
When shear rate, tested viscosity.Test condition is as follows：Equipment manufacturer is Anton Paar limited company, and unit type is
Phsica MCR rheometer (the senior rotational rheometers of MCR), device temperature is 23 DEG C, and shear rate is 50-100s-1, inspection
The survey time is 10-20s, one data of test in each second.
Step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing.Test condition is as follows：Instrument factory
Jia Shi Anton Paars limited company, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is
0.05-0.5s-1, detection time is 10-20s.A data are tested per 1s, before being sprayed after simulation stirring, viscosity during standing is extensive
It is multiple.
Step 3：Tested viscosity, viscosity B coefficent during simulation spraying.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 500-2000s-1, inspection
The survey time is 30-150s.A data are tested per 1s, is averaged, viscosity B coefficent during simulation spraying.
Step 4：Tested viscosity, analog stream viscosity B coefficent usually.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 0.01-1s-1, detection
Time is 120-1200s.A data are tested per 1s, maximum, analog stream viscosity recovery usually is taken.
Step 5：Each varnish is sprayed on the steel plate with middle painting, device therefor and parameter are as shown in table 2：
Table 2
After spraying is finished, levelling 7 minutes at 23 DEG C are toasted 30 minutes at 140 DEG C afterwards.
Step 6：It is short using the outward appearance of Byk tangerine peel instrument wavescan each varnish of test, including the obscure degree of du, Lw long waves, Sw
The value of ripple, DOI clarities；Every piece of coating board test three times, averages.
Test the data obtained is as shown in table 3：
Table 3
As the data in table 3 indicates, tetra- rheological properties of varnish of a, b, c, d are tested with the method for the present invention.Representated by a
Varnish, viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s, step 4 analog stream gluing usually
Degree change surveys data maximums more than 5Pa.s, and outward appearance is all good with sagging performance during actual spraying.
Varnish representated by b, surveys data maximums for 3.8Pa.s, much in step 4 analog stream viscosity B coefficent usually
Less than 5Pa.s, levelling stage viscosity recovery is slower, so sagging limit only has 43 microns, sagging occurs during in-situ spraying.
Varnish representated by c, data maximums are surveyed more than 5.0Pa.s, stream in step 4 analog stream viscosity B coefficent usually
Flat stage viscosity recovery is preferable, no sag phenomenon, but surveys statistical average in the viscosity B coefficent that step 3 is simulated when spraying
It is 0.28Pa.s, spraying stage viscosity is slightly higher, and du, Lw, Sw are higher, and DOI is relatively low, and outward appearance is not good.
Varnish representated by d surveys statistical average less than 0.2Pa.s, step in the viscosity B coefficent that step 3 is simulated when spraying
Four analog streams viscosity B coefficent usually surveys data maximums more than 5.0Pa.s, and levelling and sagging performance are all preferable.According to data
May determine that, viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s, and du, Sw, Lw are relatively low, DOI
Higher, outward appearance is good.The maximum of step 4 analog stream viscosity B coefficent the data obtained usually be higher than 5Pa.s, sagging limit compared with
Height, no sag risk.Four varnish are actual more consistent with the conclusion that rheology is detected in the performance of paint line；By the rheology
Method can confirm that varnish is suitably formulated.
Embodiment 2
Step one：Varnish is prepared, lacquer formulation (weight portion) is as shown in table 4：
Table 4
| Varnish | |
| A870 acrylic resins | 540 |
| The 582-2 amino resins of Xinhua Resin Factory, Shanghai | 270 |
| Tinuvin384 | 0.53 |
| Tinuvin292 | 0.53 |
| Byk306 | 0.5 |
| Byk331 | 0.8 |
| Dimethylbenzene | 42 |
| 100# solvents | 132 |
| 2-Butoxyethyl acetate | 13.64 |
| Amount to | 1000 |
Varnish dimethylbenzene is diluted to execution conditions (applying 4 glasss 28 seconds, 23 DEG C).Use rheometer, simulation coating stirring
When shear rate, tested viscosity.Test condition is as follows：Equipment manufacturer is Anton Paar limited company, and unit type is
Phsica MCR rheometer (the senior rotational rheometers of MCR), device temperature is 23 DEG C, and shear rate is 50-100s-1, inspection
The survey time is 10-20s, one data of test in each second.
Step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing.Test condition is as follows：Instrument factory
Jia Shi Anton Paars limited company, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is
0.05-0.5s-1, detection time is 10-20s.A data are tested per 1s, before being sprayed after simulation stirring, viscosity during standing is extensive
It is multiple.
Step 3：Tested viscosity, viscosity B coefficent during simulation spraying.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 500-2000s-1, inspection
The survey time is 30-150s.A data are tested per 1s, is averaged, viscosity B coefficent during simulation spraying.
Step 4：Tested viscosity, analog stream viscosity B coefficent usually.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 0.01-1s-1, detection
Time is 120-1200s.A data are tested per 1s, maximum, analog stream viscosity recovery usually is taken.
Step 5：The lacquer varnish on the steel plate with middle painting, device therefor and parameter are as shown in table 5：
Table 5
| Rotation cup type | Sames |
| Rotation cup diameter | 50mm |
| Rotation cup rotating speed | 35krpm |
| Walk rifle speed | 0.65 meter per second |
| Shaping air | 400NL/min |
| Rifle away from | 250mm |
| Spray voltage | -75kv |
| Coating flow | 290cc/min |
After spraying is finished, levelling 7 minutes at 23 DEG C are toasted 30 minutes at 140 DEG C afterwards.
Step 6：It is short using the outward appearance of Byk tangerine peel instrument wavescan test varnish, including the obscure degree of du, Lw long waves, Sw
The value of ripple, DOI clarities；Every piece of coating board test three times, averages.
Test the data obtained is as shown in table 6：
Table 6
As shown by the data in Table 6, the rheological property under varnish difference working viscosity is tested with the method for the present invention.When applying
Work viscosity is 28 seconds, and viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s, step 4 analog stream
Viscosity B coefficent usually surveys data maximums for 3.4Pa.s, and less than 5.0Pa.s, outward appearance is preferable during actual spraying, but sagging pole
Limit is relatively low.When working viscosity is 32 seconds, viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s,
Step 4 analog stream viscosity B coefficent usually surveys data maximums more than 5Pa.s, and outward appearance is with sagging performance all during actual spraying
It is good.When working viscosity is 36 seconds, step 4 analog stream viscosity B coefficent usually surveys data maximums more than 5.0Pa.s, levelling
Stage viscosity recovery is preferable, no sag phenomenon, but surveying statistical average in the viscosity B coefficent that step 3 is simulated when spraying is
0.29Pa.s, spraying stage viscosity is slightly higher, and du, Lw, Sw are higher, and DOI is relatively low, and outward appearance is not good.The varnish is actual in paint line
Show more consistent with the conclusion that rheology is detected, the suitable working viscosity of varnish can confirm that by the rheological method.
Embodiment 3
Step one：Prepare varnish.Lacquer formulation (weight portion) is as shown in table 7：Varnish a, varnish b, varnish c formulas are identical,
But standing time is different.Then varnish dimethylbenzene is diluted to execution conditions (applying 4 glasss 32 seconds, 23 DEG C).Using rheometer,
Shear rate when simulation coating is stirred, tested viscosity.Test condition is as follows：Equipment manufacturer is Anton Paar limited company,
Unit type is Phsica MCR rheometer (the senior rotational rheometer of MCR), and device temperature is 23 DEG C, and shear rate is
50-100s-1, detection time is 10-20s, one data of test in each second.
Table 7
| Varnish a | Varnish b | Varnish c | Varnish d | |
| A870 acrylic resins | 540 | 540 | 540 | 540 |
| Xinhua Resin Factory, Shanghai's 582-2 amino resins | 270 | 270 | 270 | 270 |
| Tinuvin384 | 0.53 | 0.53 | 0.53 | 0.53 |
| Tinuvin292 | 0.53 | 0.53 | 0.53 | 0.53 |
| Byk306 | 0.5 | 0.5 | 0.5 | 0.5 |
| Byk331 | 0.8 | 0.8 | 0.8 | 0.8 |
| Dimethylbenzene | 42 | 42 | 42 | 42 |
| 100# solvents | 132 | 132 | 132 | 132 |
| 2-Butoxyethyl acetate | 13.64 | 13.64 | 13.64 | 13.64 |
| Amount to | 1000 | 1000 | 1000 | 1000 |
| The room temperature time after preparation | 1 day | 3 months | 6 months | 9 months |
Step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing.Test condition is as follows：Instrument factory
Jia Shi Anton Paars limited company, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is
0.05-0.5s-1, detection time is 10-20s.A data are tested per 1s, before being sprayed after simulation stirring, viscosity during standing is extensive
It is multiple.
Step 3：Tested viscosity, viscosity B coefficent during simulation spraying.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 500-2000s-1, inspection
The survey time is 30-150s.A data are tested per 1s, is averaged, viscosity B coefficent during simulation spraying.
Step 4：Tested viscosity, analog stream viscosity B coefficent usually.Test condition is as follows：Equipment manufacturer is Anton Paar stock
Part Co., Ltd, unit type is the senior rotational rheometers of MCR, and device temperature is 23 DEG C, and shear rate is 0.01-1s-1, detection
Time is 120-1200s.A data are tested per 1s, maximum, analog stream viscosity recovery usually is taken.
Step 5：Each varnish is sprayed on the steel plate with middle painting, device therefor and parameter are as shown in table 8：
Table 8
After spraying is finished, levelling 7 minutes at 23 DEG C are toasted 30 minutes at 140 DEG C afterwards.
Step 6：It is short using the outward appearance of Byk tangerine peel instrument wavescan each varnish of test, including the obscure degree of du, Lw long waves, Sw
The value of ripple, DOI clarities；Every piece of coating board test three times, averages.
Test the data obtained is as shown in table 9：
Table 9
As shown in data in table 9, tetra- rheological properties of varnish of a, b, c, d are tested with the method for the present invention.Representated by a
Varnish, viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s, step 4 analog stream gluing usually
Degree change surveys data maximums more than 5Pa.s, and outward appearance is all good with sagging performance during actual spraying.Varnish representated by b, step 3
Viscosity B coefficent during simulation spraying surveys statistical average less than 0.2Pa.s, and step 4 analog stream viscosity B coefficent usually is surveyed
Data maximums are more than 5Pa.s, and outward appearance is slightly poorer to a varnish during actual spraying, but meets Customer Standard, while sagging is preferable.c
Representative varnish, viscosity B coefficent during step 3 simulation spraying surveys statistical average less than 0.2Pa.s, step 4 simulation levelling
When viscosity B coefficent survey data maximums more than 5Pa.s, outward appearance is slightly poorer to a and b varnish during actual spraying, but meets client
Standard, while sagging is preferable.Varnish representated by d is surveyed statistical average and is more than in the viscosity B coefficent that step 3 is simulated when spraying
0.2Pa.s, step 4 analog stream viscosity B coefficent usually surveys data maximums more than 5.0Pa.s, though sagging is preferably, outward appearance
It is poor to meet customer requirement.Four varnish are actual more consistent with the conclusion that rheology is detected in the performance of paint line, lead to
Spend the shelf-life that the rheological method can confirm that varnish.
The rheology detection method of varnish of the invention can test viscosity of the varnish under different shear rate, and simulation is clear
Paint condition of construction at the scene, so that preferable range of viscosities is obtained, balance coating sagging and levelling at the scene, it is ensured that preferably
Application outward appearance.According to the data for measuring, can confirm that varnish under different shear rate, viscosity in what be worth when, levelling
It is optimal with sagging performance.
The rheology detection method of varnish of the invention is simulated spraying and is flowed by the viscosity tested under different shear rate
Flat stressing conditions, can predict varnish spraying and levelling during viscosity B coefficent, be prevented effectively from the stream that varnish occurs at the scene
The bad disadvantage such as extension, orange peel, so as to judge whether the varnish meets the requirements in advance.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, the embodiment that the present invention is enumerated cannot give all of implementation method thoroughly
To the greatest extent, it is every to belong to obvious change or variation that technical scheme extends out still in protection model of the invention
The row for enclosing.The all documents for referring in the present invention are all incorporated as reference in this application, independent just as a document
It is cited as with reference to such.
Claims (9)
1. the rheology detection method of a kind of varnish, it is characterised in that：Comprise the following steps：
Step one：Varnish is prepared, varnish is then diluted to execution conditions, tested viscosity, shearing speed when simulation coating is stirred
Rate；
Step 2：Tested viscosity, before being sprayed after simulation stirring, viscosity recovery during standing；
Step 3：Tested viscosity, viscosity B coefficent during simulation spraying；
Step 4：Tested viscosity, analog stream viscosity B coefficent usually judges whether the rheology of the varnish is qualified.
2. the rheology detection method of varnish according to claim 1, it is characterised in that：Step one medium shear rate
It is 50-100s-1。
3. the rheology detection method of varnish according to claim 1, it is characterised in that：The step 2 medium shear rate
It is 0.05-0.5s-1。
4. the rheology detection method of varnish according to claim 1, it is characterised in that：The step 3 medium shear rate
It is 500-2000s-1。
5. the rheology detection method of varnish according to claim 1, it is characterised in that：The step 4 medium shear rate
It is 0.01-1s-1。
6. the rheology detection method of varnish according to claim 1, it is characterised in that：The tested viscosity is in temperature
To be tested under conditions of 20~25 DEG C.
7. according to the rheology detection method of any described varnish of claim 1 to 6, it is characterised in that：Described in the judgement
It is that the viscosity B coefficent that step 3 is simulated when spraying surveys the average value of data less than 0.2Pa.s that whether the rheology of varnish is qualified.
8. according to the rheology detection method of any described varnish of claim 1 to 6, it is characterised in that：Described in the judgement
Whether the qualified maximum for being step 4 analog stream viscosity B coefficent the data obtained usually of the rheology of varnish is higher than 5Pa.s.
9. according to the rheology detection method of any described varnish of claim 1 to 6, it is characterised in that：The execution conditions
For apply 4 glasss 32 seconds, 23 DEG C or apply 4 glasss 28 seconds, 23 DEG C.
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| CN108225980A (en) * | 2017-12-22 | 2018-06-29 | 中山市榄商置业发展有限公司 | A kind of rheology detection method of varnish |
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2017
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Effective date of registration: 20191209 Address after: 201201, No. 287, pioneering Road, Jinqiao Export Processing Zone, Shanghai, Pudong New Area Co-patentee after: Zhangzhou Xinzhanwang Chemical Co., Ltd. Patentee after: Libang Coatings (China) Co., Ltd. Address before: 201201, No. 287, pioneering Road, Jinqiao Export Processing Zone, Shanghai, Pudong New Area Patentee before: Libang Coatings (China) Co., Ltd. |
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