GB/T 3780.4-2017 in English
VALIDCarbon black-Part 4:Determination of oil absorption number for compressed sample
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
《GB/T 3780.4-2017炭黑 第4部分：压缩试样吸油值的测定》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
1. Standard Overview
GB/T 3780.4—2017 is the national standard of the People's Republic of China, replacing the old version GB/T 3780.4—2008. It mainly stipulates the compression of carbon black samples and the method for determining the oil absorption value of compressed samples.
2. Comparison of standard frameworks
| Dimensions | New standard (GB/T 3780.4—2017) | Old standard (GB/T 3780.4—2008) |
|---|---|---|
| New content | Added “Confirmation of precision and deviation of GB/T15338 carbon black test method”; | None |
| Modified items | Modified the description of “Weighing the sample mass” and added a section on test data processing. | Detailed steps and data processing methods are not specified. |
| Deleted items | Some instructions on the operating procedures and oil pressure indication values of type B compressors have been deleted. | Contains deleted content. |
3. Explanation of key terms and practical application cases
Compression Oil Absorption Number (COAN):Measures the ability of carbon black to absorb liquid under high pressure, affecting the processing performance and final product quality of rubber products.
Practical application case:A tire manufacturer used this standard to determine the COAN value of carbon black during production to ensure product consistency and improve rubber mixing efficiency.
4. Data processing and precision analysis
Calculation formula: D_{\mathrm{COAN}} = \frac{V}{m} \times 100, where V is the volume of consumed oil and m is the sample mass.
Comparison between instrumental method and manual method:
- Repeatability: 1.2% for instrumental method and 2.7% for manual method;
- Reproducibility: 3.5% for instrumental method.
5. Implementation recommendations
Laboratories: Ensure equipment calibration, perform tests according to standard operating procedures, and verify precision regularly.
Enterprises: Train technical personnel, establish a standardized carbon black testing system, and improve product quality and consistency.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 34698-2017 in English
Rubber compounding ingredients-Determination of water soluble substance of silica，precipitated，hydrated-Electrolytic conductivity method
2017-11-01 -
GB/T 3778-2021 in English
Carbon black for use in rubber products
2021-10-11
