GB/T 31416-2015 PDF English
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Paints and varnishes -- Determination of the pot-life of multicomponent coating systems -- Preparation and conditioning of samples and guidelines for testing
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GB/T 31416-2015: PDF in English (GBT 31416-2015) GB/T 31416-2015
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 87.040
G 50
GB/T 31416-2015 / ISO 9514.2005
Paints and vanishes - Determination of the pot-life of
multicomponent coating systems - Preparation and
conditioning of samples and guidelines for testing
(ISO 9514.2005, IDT)
ISSUED ON. MAY 15, 2015
IMPLEMENTED ON. OCTOBER 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Principle... 5
5 Required supplementary information ... 5
6 Apparatus ... 6
7 Sampling ... 6
8 Procedure ... 6
9 Expression of results ... 7
10 Precision ... 7
11 Test report ... 8
Annex A (Normative) Required supplementary information ... 9
Annex B (Informative) Guide to testing of liquid systems ... 10
Bibliography ... 11
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard uses translation method and identically adopts ISO 9514.2005
Paints and varnishes - Determination of the pot life of multicomponent coating
systems - Preparation and conditioning of samples and guidelines for testing.
The Chinese documents which have consistency with the international
normative reference in this Part are as follows.
- GB/T 3186-2006 Paints varnishes and raw materials for paints and
varnishes - Sampling (ISO 15528.2000, IDT);
- GB/T 9278-2008 Temperatures and humidities for conditioning and
testing of paint specimens (ISO 3270.1984, IDT);
- GB/T 20777-2006 Paints and varnishes - Examination and preparation
of samples for testing (ISO 1513.1992, IDT).
This Standard was proposed by China Petroleum and Chemical Industry
Federation.
This Standard 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 Standard. CNOOC Changzhou Paint and
Chemicals Research Institute Co., Ltd., Guangzhou Biuged Laboratory
Instrument Things Co. , Ltd., Guangzhou Synthetic Material Research Institute
Co., Ltd., Xinhe New Materials Co., Ltd., Shenzhen Guang Tian Decoration
Group Co., Ltd., Chongqing Three Gorges Paint Co., Ltd., Beijing Bihai Zhou
Corrosion Protection Industry Co., Ltd..
Main drafters of this Standard. Zhou Xiangling, Wang Chongwu, Li Xin, Li
Yuewu, Li Shaoqiang, Wei Xuefeng, Li Yixuan.
Paints and vanishes - Determination of the pot-life of
multicomponent coating systems - Preparation and
conditioning of samples and guidelines for testing
1 Scope
This Standard describes a method, carried out under standard conditions, for
preparing and storing a sample of a multicomponent coating system and
subsequently assessing its pot life by measuring a particular property/ies.
Reactive systems curing within a short period of time, e.g. 3 h, will have the end
of their pot life so near to the gel point that they will need to be tested for that
particular property in accordance with ISO 2535.
Special “low temperature” grade systems will need to be tested at a lower
specified temperature to reflect the conditions under which they will be used in
practice. Additionally, it can be a requirement to determine pot life at a specified
temperature or temperatures in order to cover a range of practical conditions
under which a paint will be used.
The method can be carried out either as a pass/fail test by determining the
particular property/ies after a specified period of time, or as determination of the
pot life by repeating determinations at convenient intervals of time.
This Standard is not intended for in situ control of products during their
application. It is intended to determine “pot life” in the laboratory.
NOTE The value obtained from this test method can be subject to modification by
suppliers for practical reasons (e.g. starting temperature) when giving advice to users and
should then be called the “practical pot life”.
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.
ISO 1513, Paints and varnishes - Examination and preparation of samples
for testing
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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