GB/T 37362.1-2019Paints and varnishes -- Drying tests -- Part 1: Determination of through-dry state and through-dry time (English PDF)

Foreword

GB/T 37362 "Paints and varnishes - Drying tests" consists of 6 parts:

- Part 1: Determination of through-dry state and through-dry time;

- Part 2: Resistance to chip test;

- Part 3: Paint surface drying test - Small glass ball method;

- Part 4: Determination method using recorder;

- Part 5: Improved Bando-Wolf test method;

- Part 6: No print test.

This Part is Part 1 of GB/T 37362.

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

This Part uses redrafting method to modify and adopt ISO 9117-1:2009 "Paints

and varnishes -- Drying tests -- Part 1: Determination of through-dry state and

through-dry time".

Compared with ISO 9117-1:2009, there are technical differences in this Part.

The terms involved in these differences have been marked by a vertical single

line ( ) at the margin of the outer margin. A list of the corresponding technical

differences and their causes is given in Annex A.

This Part made the following editorial modifications:

- added informative Annex A.

This Part was proposed by China Petroleum and Chemical Industry Federation.

This Part shall be under the jurisdiction of National Technical Committee on

Paints and Pigments of Standardization Administration of China (SAC/TC 5).

The drafting organizations of this Part: Jiangsu Lanling Polymer Material Co.,

Ltd., Changzhou Guanghui New Materials Research Institute Co., Ltd., Anhui

Linghu Paint Co., Ltd., CNOOC Changzhou Coating Chemical Research

Institute Co., Ltd., AVIC Baimu New Material Technology Engineering Co., Ltd.,

Dongguan Enfeng Building Materials Technology Co., Ltd., Zhongche

Tangshan Locomotive & Rolling Co., Ltd., Standard Geda Precision Instrument

(Guangzhou) Co., Ltd., Yellow River Delta Jingbo Chemical Research Institute

Co., Ltd., Shenzhen Guangtian Environmental Protection Coating Co., Ltd.,

Hebei Chenyang Industry and Trade Group Co., Ltd., Zhonghua Paint (Xinfeng)

Co., Ltd., Foshan Shunde Badfu Industrial Co., Ltd., Chongqing Three Gorges

Paints and varnishes - Drying tests - Part 1:

Determination of through-dry state

and through-dry time

1 Scope

This Part of GB/T 37362 specifies the test methods for determining whether

single coating, composite coating system of paints, varnishes or related

products reach the through-dry state and through-dry time required after the

specified drying time under standard conditions.

This Part is applicable to the determinations of through-dry state and through-

dry time required for single coating, composite coating system of paints,

varnishes or related products.

2 Normative references

The following referenced documents are indispensable for the application of

this document. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any

amendments) applies.

GB/T 3186, Paints varnishes and raw materials for paints and varnishes -

Sampling (GB/T 3186-2006, ISO 15528:2000, IDT)

GB/T 6031, Rubber, vulcanized or thermoplastic - Determination of hardness

(hardness between 10 IRHD and 100 IRHD) (GB/T 6031-2017, ISO 48:2010,

IDT)

GB/T 9271, Paints and varnishes standard panels for testing (GB/T 9271-

2008, ISO 1514:2004, MOD)

GB/T 9278, Temperatures and humidities for conditioning and testing of paint

specimens (GB/T 9278-2008, ISO 3270:1984, IDT)

GB/T 13452.2, Paints and varnishes - Determination of film thickness (GB/T

13452.2-2008, ISO 2808:2007, IDT)

GB/T 20777, Paints and varnishes - Examination and preparation of samples

for testing (GB/T 20777-2006, ISO 1513:1992, IDT)

1 - press column;

2 - clamp;

3 - tie rod for rotating the column head;

4 - wire mesh;

5 - double-sided tape;

6 - rubber disc.

Figure 2 -- Detailed diagram of the assembly of the column head

6 Sampling

According to the provisions of GB/T 3186, take a representative sample of the

test product (or each product in a multi-coat system).

According to the provisions of GB/T 20777, check and prepare the test sample.

7 Test panel

9 Precision

There is currently no effective precision data.

10 Test report

The test report shall at least contain the following information:

a) all the information necessary to identify the product under test;

......