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Quality Control Test to Extract Carbon Black in Polyolefins

Carbon black in polyolefins is used in wide variety of industries. To generate an effective light screen protection for polyolefin polymer against extreme light exposure, two to three percent of finely segregated carbon black content is required. It is very much vital for the manufacturer of such polymer to ensure that the carbon quantity is specified. Equipment like Carbon Black Content Apparatus can accurately determine the quantity of carbon black content in a material and is a vital test in polyolefin quality control.

The instrument is commonly used for estimating the carbon black content of polyethylene material. However they are also suitable for testing polybutylene, polypropylene, and polyolefin material. Any material in which carbon is present in a free state is suitable for the test method. The design of the machine and its working complies with international test standards like ASTM D1603-14, IS 4984 and IS 2530.

As per the standards, it is said that the carbon content is calculated before and after the treatment. The difference you get from the calculation is the amount of carbon black content in the specimen. The porcelain boat used is of dimensions 8 x 1.9 x 1.3 cm approximately. The nitrogen is flown by the rate 1.7 L/min ± 0.3.  The display is based on microprocessor programs for delivering accurate results.

The digital display show the test parameters during the live test. It is equipped with LED light to have a clearer vision in low light conditions. To initiate the test place the specimen in the equipment and treat it with nitrogen flow. It is very important that the operator has taken the weight of the sample prior and after the test.

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