GB/T 33609-2017 in English
VALIDFlexible cellular polymeric materials -- Determination of hysteresis loss
- Issued on:2017-05-12
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 33609-2017软质泡沫聚合材料 滞后损失试验方法》由TC48（全国塑料制品标准化技术委员会）归口，主管部门为中国轻工业联合会。
Introduction
Interpretation of GB/T 33609—2017 Hysteresis Loss Test Method for Flexible Foam Polymer Materials
Analysis of Standard Formulation Background and Technology Evolution
GB/T 33609—2017 "Hysteresis Loss Test Method for Flexible Foam Polymer Materials" is an important national standard for the performance testing of flexible foam materials in my country. The formulation of this standard is based on the needs of material science and engineering applications, aiming to unify the determination method of hysteresis loss and provide a technical basis for product quality control and research and development.
Definition and Importance of Hysteresis Loss
Hysteresis Loss refers to the energy loss caused by the non-coincidence of the load-displacement curve when the material is compressed or depressed. This phenomenon is widely present in elastic materials, especially in foam polymer materials.
Comparison of two test methods
| Method A (Compression method) | Method B (Indentation method) |
|---|---|
|
|
Calculation and practical application of hysteresis loss
Case analysis: Assume that in a compression test of a soft foam material, the loading work is $A_{\mathrm{0abeo}}$ and the loss work is $A_{\mathrm{0abcd0}}$. According to the formula: $$ A_{\mathrm{f}} = \frac{A_{\mathrm{0abcd0}}}{A_{\mathrm{0abeo}}} \times 100 $$, the hysteresis loss percentage can be obtained.
This parameter is of great significance in material design, especially in scenarios where energy loss and long-term performance need to be considered (such as mattresses, cushioning packaging, etc.).
Comparison of standard frameworks and technical optimization suggestions
- Method selection:Choose an appropriate method based on the shape and purpose of the specimen to ensure the representativeness of the test results.
- Instrument calibration:Regularly calibrate the testing machine to ensure the accuracy of force and displacement measurements.
- Environmental control:Strictly follow the state adjustment requirements to avoid the influence of environmental factors on the test results.
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