HG/T 2881-1997 Determination of paint stripping efficiency of paint strippers

HG/T 2881-1997 Determination of paint stripping efficiency of paint strippers HG/T2881-1997 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2881—1997
Determination of stripping power of removers1997-04-21Published
Ministry of Chemical Industry of the People's Republic of China
Implementation on 1997-10-01
WHG/T2881—1997
Determination of stripping power of removers was originally a national standard with the standard code GB/T1745-1979 (1989). According to the needs, it is now revised to an industry standard, and the revision content is mainly editorial modification. From the date of implementation of this standard, the original GB/T1745-1979 (1989) will be abolished. This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Paints and Pigments; the drafting unit of this standard is Changzhou Paint Chemical Research Institute of the Ministry of Chemical Industry; the main drafter of this standard is Liu Jiyuan.
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Chemical Industry Standard of the People's Republic of China
Determination of stripping power of removers
Determination of stripping power of removersHG/T2881—1997
This standard specifies the test method for determining the stripping power of paint removers and the materials, instruments and equipment used, and test procedures. This standard is applicable to the determination of the stripping power of paint removers. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1727—1992 General preparation method for paint film
GB9278—1988 Temperature and humidity of paint sample state adjustment and test (eqVISO3270:1984) 3 Materials and instruments
3.1 Aluminum plate: LY12100mmX200mm
3.2 Tinplate: 100mm×200mm;
3.3 Paint brush: width 25mm~35mm;
3.4 ​​Timer: accurate to seconds;
3.5 Blast constant temperature oven or water bath device.
4 Test steps
Select the paint varieties specified in the paint stripper product standard, and prepare paint films on three aluminum plates (or the bottom plates specified in the standard, if tinplate is used, no grinding is required) according to the provisions of GB/T1727. Make the paint film dry according to the specified drying conditions. After drying, at (23 ± 2) ℃, apply paraffin or other suitable substances to the edge of the sample to prevent the paint stripper from overflowing to the outside of the board. Place the wax-containing or uneven paint stripper in a constant temperature oven or water bath and heat it to 40 ℃ to melt it into a uniform whole. Use a brush (or glass rod) to apply or spread the paint stripper on the paint film according to the amount specified in the product standard. At the same time, start the timer, check the area percentage of the paint film expansion and wrinkling at the specified time, and judge whether it is qualified according to the provisions of the product standard. 5 Test report
The test report should include the following contents:
a) the name, model, batch, production date and manufacturer name of the tested product; b) indicate reference to this standard;
c) any differences from this test procedure caused by agreement or other reasons; d) detailed test records and test results,
e) test date.
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 21, 1997 and implemented on October 1, 1997
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