HG/T 2797.3-1996 Determination of the absorption value of dibutyl phthalate of silicon aluminum carbon black HG/T2797.3-1996 Standard download decompression password: www.bzxz.net

HG/T2797.3—1996
This standard is a method standard, referring to the international standard ISO4652/1-1985 "Rubber compounds-Carbon black-Determination of dibutyl phthalate absorption value-Part 1: Oil absorption meter determination method". This standard is consistent with the principle of the international standard, and the main difference is: this standard adopts a manual method to determine the absorption value of dibutyl phthalate while the international standard uses an oil absorption meter. The characteristics of this standard are: simple and fast operation, easy to master. Practice has proved that the test method specified in this standard is completely feasible for identifying the quality of silicon aluminum carbon black products and guiding the production of silicon aluminum carbon black. This standard was proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China; this standard was issued by the Carbon Black Industry Research and Design Institute of the Ministry of Chemical Industry; this standard was drafted by the Carbon Black Industry Research and Design Institute of the Ministry of Chemical Industry; the main drafter of this standard is Hu Kaibi. Xue Lei, 19
1 Scope
Chemical Industry Standard of the People's Republic of China
Determination of absorption value of silicon aluminum carbon black dibutyl phthalate
This standard specifies the determination method of the absorption value of silicon aluminum carbon black dibutyl phthalate. This standard is applicable to the determination of the absorption value of various types of silicon aluminum carbon black dibutyl phthalate. 2 Cited standards
HG /T 2797.3 1996
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standards. HG/T2797.7--1996 Determination of heating loss of silicon aluminum carbon black HG/T2796-1996 Packaging, storage, transportation, sampling and acceptance methods of silicon aluminum carbon black 3 Principle
3, the particle size and agglomeration degree of silicon lead carbon black directly affect the performance, the empty volume of dibutyl phthalate determination can indirectly reflect the size of silicon aluminum carbon stupid particles and the degree of attachment, 3.2 Drop dibutyl phthalate on a certain plate of sample, Use glass to mix, stir and press on a glass plate to make the mixture change from a flowing powder to a semi-plastic body. The end point is when the entire sample is rolled onto the glass rod and no oil marks appear on the glass plate. 4 Reagents
Dibutyl phthalate: analytically pure, density e2s1.045～1.050g/cm2 5 Instruments
5.1 Microburette: minimum graduation value 0.02cm2 5.2 Analytical balance: accurate to 0.001g.
5.3 Glass plate: 170mm×140mm.
5.4 Glass rod: diameter @7~8mm
6 Test conditions
The room temperature during the test shall not be lower than 21℃
7 SamplewwW.bzxz.Net
Perform according to the provisions of HG/T2796.
The Ministry of Chemical Industry of the People's Republic of China implements the standard of 1997-01-01
8 Test steps
8.1 Weigh 1g of the test sample (accurate to 0.001g). HG/T 2797.3 — 1996
Previous: When the moisture content of the sample is greater than 2.0%, dry it according to the provisions of HG/T2797.7 and then measure it. 2 Place the weighed sample on a glass plate, add dibutyl phthalate dropwise, and gently mix it with a glass spoon to make the dibutyl phthalate and the sample evenly infiltrated.
8.3 Continue to drop dibutyl phthalate at a relatively slow speed and keep rolling. When the mixture of the sample and dibutyl phthalate appears in small strips or small pieces, the sample can be rolled onto the glass rod. At the same time, when no oil marks appear on the glass plate, it is the end point. &4 Record the burette reading.
&.5The above operation should be completed within 4 to 6 minutes. 9
Result expression
9.1The test result is expressed as the volume of dibutyl phthalate absorbed by 1 kg of silicon aluminum carbon black, the unit is 10-*m2/kg, and calculated according to the following formula:
Wherein: V—volume of dibutyl phthalate consumed, cm*; sample size, g,
The calculation result is accurate to 0. 1 × 10-5 m / kg+× 100
9.2 Allowable error: The difference between the two test results shall not exceed 5×10-sm/kg-10Test report
The test report should include the following items:
Standard number of this test:
Type and mark of sample:
Average value of two test results;
Indicate the differences from the test steps specified in this standard; Test date.
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