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GB/T 9265-2009 PDF English

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GB/T 9265-2009: Determination for alkali resistance of film of architectural paints and coatings
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GB/T 9265: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 9265-2009English90 Add to Cart 0-9 seconds. Auto-delivery Determination for alkali resistance of film of architectural paints and coatings Valid
GB/T 9265-1988English199 Add to Cart 2 days Determination for alkali resistance of film of architectural paints and coatings Obsolete

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GB/T 9265-2009: Determination for alkali resistance of film of architectural paints and coatings

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 87.040 G 50 Replacing GB/T 9265-1988 Determination for Alkali Resistance of Film of Architectural Paints and Coatings Issued on. JUNE 2, 2009 Implemented on. FEBRUARY 1, 2010 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword... 3 1 Scope... 4 2 Normative References... 4 3 Sampling... 4 4 Test Panel... 5 5 Procedures... 5 6 Inspection and Result Determination of Test Panel... 6 7 Test Report... 6

Foreword

This Standard serves as a replacement of GB/T 9265-1988 Determination for Alkali Resistance of Film of Architectural Paints and Coatings. In comparison with the previous GB/T 9265-1988, there are the following main technical changes. ---The substrate of test panel is modified from asbestos cement board into non- asbestos fiber cement flat sheet; ---In the result of determination, a stipulation that when pathological phenomena (bubbles, stripping and pulverization, etc.) of coating emerge, it can be determined in accordance with GB/T 1766 is added. This Standard was proposed by China Petroleum and Chemical Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee on Paints & Pigments of Standardization Administration of China. The drafting organizations of this Standard. CNOOC Changzhou EP Coating Co., Ltd., Kunshan SUNMUN Technology. The main drafters of this Standard. Wuxuan, Shi Yilei. The release of previous versions of the standard replaced by this Standard is as follows. ---GB/T 9265-1988. Determination for Alkali Resistance of Film of Architectural Paints and Coatings

1 Scope

This Standard specifies the method of determining alkali resistance (saturated calcium hydroxide solution) of film of architectural paints and coatings.

2 Normative References

Through the quotation in this Standard, the provisions in the following documents become provisions of this Standard. In terms of references with a specified date, all the subsequent modifications (excluding the corrected content) or modified versions are not applicable to this Standard. However, all parties that reach an agreement in accordance with this Standard are encouraged to explore the possibility of adopting the latest version of these documents. The latest version of references without a specified date is applicable to this Standard. GB/T 1766 Paints and Varnishes - Rating Schemes of Degradation of Coats GB/T 3186 Paints, Varnishes and Raw Materials for Paints and Varnishes - Sampling (GB/T 3186-2006, ISO 15528.2000, IDT) GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods (GB/T 6682-2008, ISO 3696.1987, MOD) GB/T 9271 Paints and Varnishes - Standard Panels for Testing (GB/T 9271-2008, ISO 1514.2004, MOD)

3 Sampling

In accordance with the stipulation in GB/T 3186, take representative samples from products being tested (or each type of products in a multi-coating system).

4 Test Panel

4.1 Materials and Dimensions Unless it is otherwise stipulated, the substrate of the test panel shall be non-asbestos fiber cement flat sheet that complies with NAF H Grade-V in JC/T 412.1-2006.In addition, it shall be flat and not distorted. 4.2 Processing and Preparation Unless it is otherwise stipulated, test panel shall be processed in accordance with GB/T 9271; then, products being tested shall be coated in accordance with the stipulated method. Any difference from the requirement in GB/T 9271 shall be indicated in the test report (refer to Chapter 7).

5 Procedures

5.1 Environmental Conditions Unless it is otherwise stipulated, the test shall be conducted under the condition of temperature (23 ± 2) °C and relative humidity (50 ± 5) %. 5.3 Test Procedures Take 3 previously prepared test panels; use the mixture of paraffin and rosin (mass ratio. 1.1) to seal up the edges and the back of the test panels. The width of the edge sealing shall be 2 mm ~ 4 mm.

6 Inspection and Result Determination of Test Panel

After soaking is completed, take out the test panels, then, use water to rinse it. Get rid of water drops on the panels, the, use filter paper to absorb the water. Immediately observe whether the surface of the coating manifests discoloration, bubbles, stripping, pulverization and softening, etc.

7 Test Report

Test report shall at least include the following content. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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