Hybrid adjustment type chloroprene rubber CR321, CR322 (two)

4 Inspection method

4.

Extract laboratory mixed samples according to GB/T19187-2003, shake off the surface talc, and prepare the samples according to 8.

4.

Take the compound film prepared by GB/T21462-2008 and measure it in accordance with GB/T1233-1992, using a small rotor, preheating at 120℃ for 1 min, and taking the time corresponding to the rise of 5 Mooney values ​​as the result, expressed in MSt5

4.

Measure according to GB/T5281998

4.

Samples were GB / T15340-1994 homogenized, homogenization temperature of 20 ℃ ± 5 ℃, measured in accordance with Appendix A

4.

According to GB/T4498-1997 method A, the sample is about 2g, and the burning temperature is 850℃±25℃

5 Inspection rules

5.

5.

5.

5.

5.

6Packaging, marking, storage and transportation

6.

It should be clearly marked with the product name, grade, net content, manufacturer (company) name, address, registered trademarks, standard number, production date, moisture-proof sunscreen, grades and production lot number on the package 6.
2
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6.
3 During the storage process, it must be ventilated and dry, protected from sunlight, kept away from heat sources, prevented from being damp or mixed with impurities, and kept the packaging intact
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Long-term over-temperature storage will cause changes in color, viscosity and Mooney scorch time
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6.
4 During transportation, prevent direct sunlight and rainwater soaking: transportation vehicles should be tidy and free from damage to packaging and mixing of sundries
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6.
5 The quality guarantee period is one year from the production period when the temperature is below 20℃, and half a year when the temperature is below 30℃
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Related Links: Hybrid Adjustable Chloroprene Rubber CR321, CR322 (1)