GB/T 23262-2023 in English
VALIDTest methods for nonmetallic sealing packings
- Issued on:2023-11-27
- Implemented on:2024-06-01
- File Format:PDF
- Delivery:Via email within 5 business days
$321.00
《GB/T 23262-2023非金属密封填料试验方法》由TC406（全国非金属矿产品及制品标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
GB/T 23262—2023 Standard Overview
The National Standard of the People's Republic of China GB/T 23262—2023 "Test Methods for Non-metallic Sealing Fillers" was issued in 2023, replacing the 2009 version of the standard. This revision mainly adds items such as dimensional deviation and pH value determination, and optimizes the determination methods of ignition loss/heat resistance loss, acid loss and alkali loss.
Comparison of New and Revised Contents
| Projects | 2009 Edition Contents | 2023 Edition Updates |
|---|---|---|
| Determination of Dimensional Deviation | Not mentioned | New Chapter 5 |
| Determination of pH Value | Not mentioned | New Chapter 6 |
| Determination of Loss on Ignition/Loss on Heat Resistance | Chapters 4 and 6 | Optimized to Chapter 7 |
| Temperature Range of High Temperature Test | $105\pm5^\circ\mathrm{C}$ | Adjusted to $80^\circ\mathrm{C}\sim90^\circ\mathrm{C}$ |
Explanation of professional terms and practical applications
pH value determination:The pH value of the filler under specific conditions is measured by an acidometer to reflect its chemical properties. This method is suitable for evaluating the adaptability of the filler to the medium.
Heat loss and ignition loss:The mass loss of the filler at different temperatures is tested to evaluate its high temperature stability. The ignition loss is determined by burning in a high-temperature furnace, while the heat loss is carried out at a lower temperature.
Comparative analysis of standard frameworks
| Dimensions | 2009 Edition | 2023 Edition |
|---|---|---|
| Number of test items | 12 items | 16 items |
| New technical requirements | - | Dimensional deviation, pH value, sealing performance |
| Scope of application | Braided and twisted packing | New requirements for adaptability to high temperature and corrosive environments |
Implementation recommendations
Operation steps:
- Prepare test samples according to standard requirements.
- Select appropriate instruments and equipment according to specific test items, such as vernier caliper, acidity meter, etc.
- Perform standardized test procedures and record key data points.
- Use GB/T 8170 for result rounding and analysis.
- Optimize filler formulation and production process based on test results.
Notes:
- Ensure that instruments and equipment are calibrated in time.
- Strictly control test conditions, such as temperature, humidity, etc., in accordance with standard requirements.
- For corrosion tests, protective equipment must be worn and the test must be conducted in a well-ventilated environment.
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