This standard specifies the product classification, technical requirements, determination methods, inspection rules, and packaging, storage, sampling and acceptance methods of acetylene carbon black. This standard applies to carbon black produced by pyrolysis of acetylene gas at high temperatures. This standard applies to acetylene carbon black used in dry batteries, radio equipment, rubber products and other industries. GB/T 3782-1993 Technical conditions for acetylene carbon black GB/T3782-1993 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Technical conditions for acetylene carbon black
Acetylene black-Specification limits1 Subject content and scope of application
GB/T3782-93
Replaces B3781, 1-83
GR3782-83
This standard specifies the product classification, technical requirements, determination methods, inspection rules and packaging, storage, transportation, sampling and acceptance methods of acetylene carbon black (also known as acetylene black).
This standard applies to carbon black obtained by cracking acetylene gas at high temperature. This standard applies to acetylene carbon black used in industries such as dry batteries, radio components and rubber products. 2 Reference standards
GB/T 3780.8
Determination of heating loss of carbon black
GB/T3780.9Determination of ash content of carbon black
GB/T 3780.12
Inspection of impurities in carbon black
Determination of pH value of acetyl carbon black
GB/T 3781.4
GB/T 3781.5
GB/T 3781.6
GB/T 3781.7
GB/T 3781. 8
Determination of coarse particle fraction of acetylene carbon black
Determination of apparent specific volume of acetylene carbon black
Determination of iodine absorption value of acetylene carbon black
Determination of hydrochloric acid absorption of acetylene carbon black
GB/T3781.9Determination of resistivity of acetylene carbon black3Product classification
3.1 Powdered products.
3.250% compressed products. Compress the powdered acetylene carbon black to make its apparent specific volume reach about one-half of that of the powdered products. 3.375 is a compressed product. Compress the powdered acetylene carbon black to make its apparent specific volume reach about one-third of that of the powdered products. 4Technical requirements
Acetylene carbon black of all categories and grades shall not contain impurities such as gravel and iron filings. The samples used for various chemical and physical property tests shall pass through an 850μm (20-day) sieve.
The physical and chemical properties of acetylene carbon black shall comply with the requirements of Table 1. Table 1 Technical indicators of acetylene carbon black
Heating loss, for
Ash content, %≤
Qualified products
Approved by the State Administration of Technical Supervision on March 3, 1993Superior products
50% compressed products
Qualified products
75% compressed products
Qualified products
Implemented on December 1, 1993
Coarse particle fraction, %
Apparent specific volume, mT./g
Iodine absorption value + g/kg
Hydrochloric acid absorption liquid yellow.mL/g
Resistivity·m
GB/T 3782: 93
Continued Table 1
50% compression products
Qualified products
Note:) Except for radio components, pH value is not used as an assessment indicator. 5 Test methods
5.1 Impurity inspection shall be carried out in accordance with GB/T 3780.12. 5.2 Determination of heating loss shall be carried out in accordance with GB/T3780.8. 5.3 Determination of ash content shall be carried out in accordance with GB/T3780.9. 5.4 Determination of pH value shall be carried out in accordance with GB/T 3781.4 5.5 Determination of coarse particle content shall be carried out in accordance with GB/T3781.5. 5.6 The determination of apparent specific volume shall be carried out in accordance with GB/T 3781.6. Superior products
90~105
Qualified products
75% Pressure-transfer products
Qualified products
The determination of iodine absorption value shall be carried out in accordance with GB/T 3781.7, and the standard sample SRAB1 shall be used for comparison test in each determination. 5.7
5.8 The determination of hydrochloric acid absorption shall be carried out in accordance with GH/T3781.8. 5.9
The determination of resistivity shall be carried out in accordance with GB/T3781.9, and the standard sample SRAB1 shall be used for comparison test in each determination. Inspection rules
6.1 Sampling method
6.1.1 According to the number of sampling bags in Table 2, randomly select the number of sampling bags in the overall material, layered, and points in non-directional locations. Table 2 Provisions for the number of sampling bags
Total number of materials
26~100
101~500
501~1 000
1 001 ~3 000www.bzxz.net
3 001--10 000
6.1.2Open the carbon black bag to be sampled and use a clean stainless steel spoon to take samplesMinimum number of sampling bags
To make the collected samples represent the quality of the batch of products, all the collected samples shall be fully mixed and evenly mixed. The sample after mixing shall be more than 300 g.
6.1.4Sample label
CB/T 3782-93
After the sample is placed in a glass container with a ground mouth, a label shall be immediately attached to the outer wall as a sample for inspection and retention. The label shall include the following information:
Sample category and number
Overall material batch number and quantity:
Production unit;
d. Sample;
Sampling location;
f. Sampling date:
g. Name of the sampler.
6.1.5 Sample storage
6.1.5.1 Samples shall be stored in a sample room with appropriate temperature and humidity. 6.1.5.2 The effective storage period of samples is six months.
6.2 Inspection classification
6.2.1 Delivery/Inspection
Factory inspection items are divided into two categories: acetylene carbon black for batteries or radio components. a. Acetylene black for dry batteries needs to be inspected for coarse particle size, apparent specific volume, iodine absorption value, hydrochloric acid absorption and resistivity. b. Acetylene carbon for radio components needs to be inspected for coarse particle size, pH value, apparent specific volume, iodine absorption value, hydrochloric acid absorption and resistivity. 6. 2. 2 Type inspection
All technical requirements specified in this standard shall be inspected. 6.3 Acceptance rules
6.3.1 One sample shall be inspected for each batch leaving the factory. If one item does not meet the corresponding requirements, it is allowed to be re-inspected once. If it still does not meet the requirements, it shall be downgraded or judged as a non-conforming product.
6.3.2 If one item does not meet the corresponding requirements in the type inspection, it shall be re-inspected once. If it still does not meet the requirements, the products of that period shall be downgraded or judged as non-conforming products.
6.3.3 The inspection department of the production must ensure that the products leaving the factory meet the requirements specified in the standard, and send the product quality certificate to the recipient at the same time as each batch of products leaves the factory.
6.3.4 The user has the right to inspect the products according to the standards and has the right to reject products that do not meet the standards. 6.3.5 The acceptance period is within 30~~40 days after the product arrives at the consignee or port. If any problem is found in the product, it shall be sampled and re-inspected according to Article 6.1. The re-inspection rules are 6. 3. 1 and 6.3. 2. 7. Product packaging and labeling
7.1 At the end of the production process, the net weight of each bag shall be 5.0kg or 10.0kg. 7.2 For the convenience of storage and transportation, the packaging bag shall be in the form of a flat rectangular parallelepiped with the bag mouth sealed. 7.3 The packaging material must be strong enough to prevent damage during transportation. Generally, the inner layer is made of two layers of 80 kraft paper, covered with a polyethylene plastic bag (or polyethylene is coated on the container bag), and then packed in a polypropylene plastic woven bag. , special circumstances shall be agreed upon by both parties. 7.4 Packaging Labels
Each packaging bag shall have a wake-up sign on the front, which shall include the following: product name;
b. Note: trademark;
Number of the standard to be implemented, product quality grade d. Net weight:
e. Manufacturer name!
GB/T3782-93
f. Production date and production batch number as well as words such as "Caution, light effect\, pay attention to moisture-proof". 8 Storage and transportation of products
8.1 Products shall be stored in ventilated and dry warehouses. 8.2 Products shall be stacked neatly and cleanly, and the registered trademark, batch number, production date and other signs shall be clearly identifiable. Heavy pressure is strictly prohibited. 8.3 Avoid mixed storage and transportation with items that may deteriorate the product or damage the packaging bag. 8.4 During storage and transportation, the packaging of the product shall be kept clean and undamaged. Products that have been taken out of the package shall not be returned to the package. Additional Notes:
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 was 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 refers to the Japanese Industrial Standard JIS K1469-84 (89) "Acetylene Black".
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