GB/T 14853.2-2016 in English
VALIDPelletized carbon black for rubber—Part 2: Determination of fines content and pellet attrition
- Issued on:2016-06-14
- Implemented on:2017-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$68.00
《GB/T 14853.2-2016橡胶用造粒炭黑 第2部分: 细粉含量和颗粒磨损量的测定》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC5（全国橡胶与橡胶制品标准化技术委员会炭黑分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
GB/T 14853.2—2016 Standard Interpretation
1. Background and significance of standard formulation
GB/T 14853 "Rubber Granulated Carbon Black" series of standards are important basic standards for China's rubber industry, aiming to standardize the quality inspection methods of rubber carbon black. Among them, Part 2 (Determination of fine powder content and particle abrasion) is a key indicator for product quality control.
2. Key points of standard revision
- Term unification: Change "particles" to "granules" to better meet industry standards.
- Description optimization: Modify the operating details of the mechanical vibrating screen to improve the accuracy of the experimental results.
- Simplify the process: Delete the "Significance and Application" section to make the standard more concise and practical.
| Item | GB/T 14853.2—2006 | GB/T 14853.2—2016 |
|---|---|---|
| Terminology | “Particle” | “Granule” |
| Operation steps | Frequency of sieve shaker is not specified | Frequency range of sieve shaker is specified (220-320 r/min) |
| Sample mass | About 25-28g | Accurate to 25g |
3. Experimental methods and steps
a) Determination of fine powder content
- Weigh 25g of carbon black sample and evenly distribute it on a 125μm test sieve.
- Place the test sieve on a mechanical sieve shaker, set the frequency to 220-320 r/min, and the vibration time to 5 minutes.
- Collect and weigh the mass of fine powder passing through the sieve, and calculate the fine powder content (see formula 7.1).
b) Determination of particle wear
- Continue to vibrate the tested sample on the test sieve for 15 minutes.
- Collect and weigh the mass of fine powder passing through the sieve again, and calculate the particle wear (see formula 7.2).
- Clean the test sieve and receiving tray to ensure that they do not affect the next experiment.
4. Equipment and instrument requirements
- Mechanical vibrating screen: Slap or top-impact type, frequency 220-320 r/min.
- Test sieve: R40/3 series in accordance with GB/T6003.1-2012 standard, diameter 200mm.
- Balance: Graduation value is 0.1g, to ensure weighing accuracy.
5. Implementation suggestions
In actual operation, it is recommended that:
- Strictly follow the shaking time and frequency specified in the standard to conduct the experiment to ensure the accuracy of the results.
- When using the arbitration test method, it is preferred to use the middle position (the 3rd and 4th test sieves) for testing.
- Regularly calibrate the equipment to ensure that the frequency of the vibrating screen and the accuracy of the balance meet the requirements.
- The experimental report should record in detail the key parameters such as sample identification, mass, vibration time, etc., and perform numerical rounding according to GB/T8170.
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