GB/T 12598-2023 in English
VALIDPlastics—Ion exchange resin—Determination for the rate of sphericity after osmotic-attrition and attrition
- Issued on:2023-09-07
- Implemented on:2024-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$233.00
《GB/T 12598-2023塑料 离子交换树脂 渗磨圆球率和磨后圆球率的测定》由TC15（全国塑料标准化技术委员会）归口，TC15SC4（全国塑料标准化技术委员会通用方法和产品分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
Standard Background and Significance
GB/T 12598-2023 is an important national standard for the determination of ion exchange resin strength. Its main purpose is to evaluate the strength of unused wet spherical ion exchange resins under specific conditions by testing the ball rate of infiltration and the ball rate after grinding. This revised version of the standard replaces the previous GB/T 12598-2001 and has made many improvements in technical details to meet the needs of industry development.
Comparative analysis of standard frameworks
| Comparison dimensions | GB/T 12598—2001 | GB/T 12598—2023 |
|---|---|---|
| Technical methods | Infiltration grinding method, no clear ball mill speed requirement. | New ball mill speed requirement (125 r/min ±3 r/min), and optimized drum parameters. |
| Reagents and materials | Saturated sodium chloride solution and silver nitrate indicator are not mentioned. | New requirements for the use of saturated sodium chloride solution and silver nitrate indicator. |
| Instruments and Equipment | The technical parameters of the grinding column and roller are not specified. | The technical requirements for the grinding column, ball mill and porcelain ball are specified in detail, and the requirements for silicon nitride material are newly added. |
Term Explanation and Practical Application
Grinding Roundness:Refers to the ability of particles to maintain integrity after roller grinding under the action of acid and alkali. For example, when testing strongly acidic cation exchange resins, 1mol/L HCl solution is required for treatment.
Post-grinding Roundness:Refers to the integrity of particles after only mechanical force (such as ball mill). For example, in the test of weakly basic anion exchange resins, 1mol/L NaOH solution is required for treatment.
Implementation recommendations
To ensure the accuracy and consistency of the test results, it is recommended that:
- Prepare the sample strictly in accordance with the standard requirements, especially the sample type processing steps.
- Regularly calibrate the equipment, such as whether the ball mill speed and the inner diameter of the drum meet the specified requirements.
- Strengthen personnel training, especially in the operation of the infiltration treatment column and the particle separation process, pay attention to observe and record abnormal phenomena.
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