GB/T 11546.2-2022 in English
VALIDPlastics—Determination of creep behaviour—Part 2:Flexural creep by three-point loading
- Issued on:2022-12-30
- Implemented on:2023-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 11546.2-2022塑料 蠕变性能的测定 第2部分:三点弯曲蠕变》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
1. Standard Overview
GB/T11546.2-2022 "Determination of creep properties of plastics Part 2: Three-point bending creep" is modified and formulated according to the international standard ISO8992:2003, and is applicable to the creep performance test of non-reinforced and semi-rigid plastic materials in the three-point bending test.
2. Comparison of standard frameworks
| Standard dimensions | GB/T11546.2-2022 | ISO8992:2003 | Difference analysis |
|---|---|---|---|
| Scope of application | Three-point bending creep test of non-reinforced and semi-rigid plastic materials | Same | - |
| Test method | Loading system requires higher accuracy (deviation ±1%) | Deviation ±2% | Instrument requirements should be improved to adapt to domestic technical conditions |
| Reference standards | GB/T2035, GB/T9341, etc. | ISO472:1999, ISO178:2001, etc. | Replace with domestic equivalent standards |
3. Implementation suggestions
Test preparation stage:
- Ensure that the specimen meets the requirements of GB/T9341, and pay attention to the influence of specimen orientation and thermal history.
- State adjustment must be carried out under the conditions specified in the material standard. If there is no regulation, use GB/T2918.
Test execution stage:
- The loading system deviation is controlled within ±1%, and special attention is paid to the influence of preload on the results.
- The accuracy of the deflection measuring device must reach ±0.01% of the actual value. It is recommended to use non-contact equipment to avoid additional deformation.
Data analysis phase:
- Calculate the bending creep modulus, stress and strain according to formulas (2), (3) and (4). It is recommended to draw creep curves and isochronous stress-strain curves to assist analysis.
- Consider the effect of physical aging on creep, especially in high and low temperature tests, the storage conditions of the specimens must be specially noted.
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