This standard specifies the determination method of the apparent specific volume of acetylene carbon black. This standard is applicable to the determination of the settled volume of acetylene carbon black under specified conditions. GB/T 3781.6-1993 Determination of the apparent specific volume of acetylene carbon black GB/T3781.6-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Determination of apparent specific volume of acetylene black
Acetylene black--Determination of apparent specific volume wwW.bzxz.Net
1 Subject content and scope of application
This standard specifies the method for determining the apparent specific volume of acetylene black. This standard applies to the determination of the settled volume of acetylene black under specified conditions. 2 Only
2. 1 Analytical balance: accurate to 1 mg.
2.2 Volumetric scale: 50 mL, 1 ml graduation. 2.3 Rubber sheet: thickness of about 6 mm, A hardness of 70~80 3 Steps
3.1 Weigh 2 g of the sample, accurate to 1 mg, and place it in a 50 mL stoppered ground-mouth measuring cylinder and cover it with a stopper. GB/T 3781. 6-93
Replaces GB 3781. 683
3.2 Freely drop the sample vertically from a height of about 5 cm toward the rubber plate. 3.3 Repeat (3.2) until the volume of the sample in the measuring cylinder remains unchanged, and record the volume of the sample after settling. 4 Result expression
The apparent specific penetration A (mL/g) is calculated according to formula (1): A=
Where V is the volume of the sample after settling, mL; m is the mass of the sample, &.
The calculated result is rounded to the integer.
5 Allowable difference
The difference between the two measurement results shall not exceed 0 .5mL/g, 6Test report
The test report should include the following items:
The national standard number on which this test is based!
The type and mark of the sample;
The average value of the two test results;
dIndicate the differences from the specified test steps;Approved by the State Bureau of Technical Supervision on March 3, 1993V
Implemented on February 1, 1993
The period of science and technology
Test date.
Additional instructions:
GB/T 3781.6-93
This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Carbon Black Industry Research and Design Institute of the Ministry of Chemical Industry. This standard is drafted by the Carbon Black Industry Research and Design Institute of the Ministry of Chemical Industry. The main drafters of this standard are Yu Lian and Meng Chuanying. This standard is equivalent to the Japanese Industrial Standard JSK1698 black apparent density determination method
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