GB/T 37356-2019Paints and varnishes - Lighting and procedure for visual assessments of coatings (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard uses the translation method equivalent to ISO 13076.2012 "Lighting conditions and methods for visual evaluation of paint and varnish coatings".

This standard was proposed by the China Petroleum and Chemical Industry Federation.

This standard is under the jurisdiction of the National Coatings and Pigments Standardization Technical Committee (SAC/TC5).

This standard was drafted. CNOOC Changzhou Coating Chemical Research Institute Co., Ltd., China Shipbuilding Industry Corporation 725th Research Institute Building

Door Materials Research Institute, Standard Geda Precision Instrument (Guangzhou) Co., Ltd., AVIC Baimu New Material Technology Engineering Co., Ltd., Zhejiang Yutong New

Materials Co., Ltd., Dongguan Enfeng Building Materials Technology Co., Ltd., Shenzhen Guangtian Environmental Coating Co., Ltd., Hebei Chenyang Industry and Trade Group

Co., Ltd., Baden Fu Industrial Co., Ltd., Shunde District, Foshan City, CRRC Tangshan Locomotive & Rolling Stock Co., Ltd., Changzhou Guanghui New Materials Research Co., Ltd.

Company, Zhejiang Mingquan Industrial Coating Co., Ltd., Chongqing Sanxia Paint Co., Ltd., Zhuzhou Jiuhua New Material Coating Industry Co., Ltd.

Division, Donglai Coating Technology (Shanghai) Co., Ltd., Dongguan Guzhuo Precision Components Co., Ltd.

1 Scope

This standard specifies the lighting conditions for visual assessment of the aging area, spots or other defects on the surface of the coating or inside the coating and

method.

This standard does not apply to visual colorimetric, visual colorimetric can be carried out in accordance with ISO 3668.

2 Principle

The aging area, spots or other defects of the sample were visually evaluated under specified lighting conditions.

3 instruments

Fluorescent lamp. A wide-angle light source (see Figure 1) with an aluminized reflective film that reflects light downwards. The color temperature is 6500K and the color rendering is 9 (corresponding to

At the color development level 1A, the color rendering index Ra is 90 to 100).

Note. The color temperature corresponding to the color temperature and color rendering is 965.

4 visual assessment method

5 test report

When using the methods specified in this standard, the test report should add the following information.

a) indicate the standard number (GB/T 37356);

b) Indicate the type of light source (natural daylight or artificial daylight) used to evaluate the test panel; if an artificial light source is used, the type of light source should be given

The details of.

Description.

1---lights.

Figure 1 Location of lights, test panels, and observers

Appendix A

(informative appendix)

Application example

Table A.1 lists examples of visual assessments that can be performed using the methods specified in this standard.

Table A.1 Application examples of this standard

Test method standard

Cross-cut test ISO 2409

Impact test ISO 6272-1, ISO 6272-2

Stone resistance ISO 20567-1, ISO 20567-2

Chemical resistance

ISO 2812-1, ISO 2812-2, ISO 2812-3,

ISO 2812-4, ISO 2812-5, ISO 15710

Film defect

ISO 4628-2, ISO 4628-3, ISO 4628-4,

ISO 4628-5, ISO 4628-6, ISO 4628-7,

ISO 4628-8, ISO 4628-10

Scratch resistance ISO 1518-1, ISO 1518-2, ISO 12137

Car washing test ISO 20566

Bending test ISO 1519, ISO 6860, ISO 17132

Drying test

ISO 9117-1, ISO 9117-2, ISO 9117-3,

ISO 9117-4, ISO 9117-5, ISO 9117-6

Grinding fineness ISO 1524

Pull-off adhesion test ISO 4624

Anti-sagging ISO 16862

Performance evaluation of coating systems related to the coating process ISO 28199-3

Moisture-resistant scrub ISO 11998

references

[1] ISO 1518-1 Paintsandvarnishes-Determinationofscratchresistance-Part 1. Constant-

Loadingmethod

[2] ISO 1518-2 Paintsandvarnishes-Determinationofscratchresistance-Part 2.Variable-

Loadingmethod

[3] ISO 1519 Paintsandvarnishes-Bendtest(cylindricalmandrel)

[4] ISO 1524 Paints, varnishesandprintinginks-Determinationoffinenessofgrind

[5] ISO 2409 Paintsandvarnishes-Cross-cuttest

[6] ISO 2812-1 Paintsandvarnishes-Determinationofresistancetoliquids-Part 1. Immer-

Siininliquidsotherthanwater

[7] ISO 2812-2 Paintsandvarnishes-Determinationofresistancetoliquids-Part 2.Water

Immersionmethod

[8] ISO 2812-3 Paintsandvarnishes-Determinationofresistancetoliquids-Part 3.Method

Usinganabsorbentmedium

[9] ISO 2812-4 Paints and varnishes-Determination ofresistancetoliquids-Part 4.

Spottingmethods

[10] ISO 2812-5 Paintsandvarnishes-Determinationofresistancetoliquids-Part 5.Tem-

Peraturegradientovenmethod

[11] ISO 3668 Paintsandvarnishes-Visualcomparisonofthecolourofpaints

[12] ISO 4624 Paintsandvarnishes-Pul-offtestforadhesion

[13] ISO 4628-2 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 2.Assessmentof

Degreeofblistering

[14] ISO 4628-3 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 3.Assessmentof

Degreeofrusting

[15] ISO 4628-4 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 4.Assessmentof

Degreeofcracking

[16] ISO 4628-5 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 5.Assessmentof

Degreeofflaking

[17] ISO 4628-6 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 6.Assessmentof

Degreeofchalkingbytapemethod

[18] ISO 4628-7 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 7.Assessmentof

Degreeofchalkingbyvelvetmethod

[19] ISO 4628-8 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 8.Assessmentof

Degreeofdelaminationandcorrosionaroundascribeorotherartificialdefect

[20] ISO 4628-10 Paintsandvarnishes-Evaluationofdegradationofcoatings-Designationof

Quantityandsizeofdefects,andofintensityofuniformchangesinappearance-Part 10.Assessment

Ofdegreeoffiliformcorrosion

[21] ISO 6272-1 Paintsandvarnishes-Rapid-deformation(impactresistance)tests-Part 1.

Falingweighttest, large-areaindenter

[22] ISO 6272-2 Paintsandvarnishes-Rapid-deformation(impactresistance)tests-Part 2.

Falingweighttest, smal-areaindenter

[23] ISO 6860 Paintsandvarnishes-Bendtest(conicalmandrel)

[24] ISO 9117-1 Paintsandvarnishes-Dryingtests-Part 1.Determinationofthrough-dry

Stateandthrough-drytime

[25] ISO 9117-2 Paintsandvarnishes-Dryingtests-Part 2.Pressuretestforstackability

[26] ISO 9117-3 Paintsandvarnishes-Dryingtests-Part 3. Surface-dryingtestusingbalo-

Tini

[27] ISO 9117-4 Paintsandvarnishes-Dryingtests-Part 4. Testusingamechanicalrecorder

[28] ISO 9117-5 Paintsandvarnishes-Dryingtests-Part 5. ModifiedBandow-Wolfftest

[29] ISO 9117-6 Paintsandvarnishes-Dryingtests-Part 6. Print-freetest

[30] ISO 11998 Paintsandvarnishes-Determinationofwet-scrubresistanceandcleanability

Ofcoatings

[31] ISO 12137 Paintsandvarnishes-Determinationofmarresistance

[32] ISO 15710 Paintsandvarnishes-Corrosiontestingbyalternateimmersioninandremoval

Fromabuferedsodiumchloridesolution

[33] ISO 16862 Paintsandvarnishes-Evaluationofsagresistance

[34] ISO 17132 Paintsandvarnishes-T-bendtest

[35] ISO 20566 Paintsandvarnishes-Determinationofthescratchresistanceofacoating

Systemusingalaboratory-scalecar-wash

[36] ISO 20567-1 Paintsandvarnishes-Determinationofstone-chipresistanceofcoatings-

Part 1. Multi-impacttesting

[37] ISO 20567-2 Paintsandvarnishes-Determinationofstone-chipresistanceofcoatings-

Part 2. Single-impacttestwithaguidedimpactbody

[38] ISO 28199-3 Paintsandvarnishes-Evaluationofpropertiesofcoatingsystemsrelatedto

theapplicationprocess-Part 3.Visualassessmentofsagging,formationofbubbles,pinholingand

Hidingpower

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