GB/T 33796-2017 in English
SUPERSEDEDGeneral requirement of thermoplastic starch
- Issued on:2017-05-31
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
| Standard No: | GB/T 33796-2017 |
| Document status: | SUPERSEDED |
| Superseded by: |
GB/T 33796-2025 General technical requirement of thermoplastic starch
|
| Superseded on: | 2025-10-01 |
| Title in English: | General requirement of thermoplastic starch |
| Title in Chinese: | 热塑性淀粉通用技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-05-31 |
| Implemented on: | 2017-12-01 |
| ICS Classification: | 83.080-Plastics |
| Chinese Classification: | Y28-Daily use plastic products |
| Professional Classification: | GB-National Standard |
| Related Keywords: | thermoplastic starch
standard formulation thermoplastic starch thermoplastic starch background thermoplastic starch products thermoplastic starch introduction gb/t |
| Related Topics: | starch
Wood-plastic technical requirements Starch properties Starch properties properties of starch Starch Physical Properties GBT33796 GB/T 33796-2017 Starch factory water |
《GB/T 33796-2017热塑性淀粉通用技术要求》由TC380（全国生物基材料及降解制品标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
GB/T 33796—2017 In-depth interpretation of general technical requirements for thermoplastic starch
Background and significance of standard formulation
Thermoplastic starch is a material with thermoplastic processability formed by physical or chemical modification with natural starch as the main raw material. With the increasing global attention to environmental issues, the demand for degradable materials has risen sharply. As an important bio-based material, thermoplastic starch has been widely used in packaging, film, tableware and other fields.
The formulation of GB/T 33796—2017 fills the gap in the domestic technical requirements for thermoplastic starch, provides a unified technical standard for production, sales and application, and helps promote the healthy development of bio-based materials, reduce dependence on traditional plastics, and promote the realization of sustainable development goals.
Comparative Analysis of Standard Frameworks
| Dimensions | GB/T 33796—2017 | International Comparison (ISO) | Other Domestic Standards |
|---|---|---|---|
| Definition of Terms | Clear definition of thermoplastic starch | Consistent with some terms in ISO 15985:2004 | This is the first time it has been proposed in China |
| Technical Indicators | Appearance, physical properties, biodegradability, etc. | Reference to international standard test methods | Complementary to QB/T 4012—2010 |
| Test methods | Citing multiple domestic and international standards | Ensuring data consistency | Cooperating with GB/T 3682 and other standards |
Interpretation of key technical requirements
Physical performance requirements
Table 1 specifies the physical performance indicators of thermoplastic starch in detail, including appearance, number of black and color particles, density deviation, melt mass flow rate deviation, flow temperature deviation and ash content.
Take melt mass flow rate deviation as an example, this indicator reflects the processing performance of the material. The test method is based on GB/T3682-2000, and uses thermoplastic melt mass flow rate tester for measurement to ensure process consistency during the production process.
Biodegradation Performance Requirements
Biodegradation performance is an optional indicator and needs to be tested only when the product claims to be biodegradable. The test methods include GB/T19277.1, GB/T19276.1 and other standards, and are evaluated using biodegradation test equipment.
Through these tests, the decomposition ability of the product under specific conditions can be ensured, providing a scientific basis for the application of green materials.
Implementation Suggestions and Precautions
Case Study: Determination of Starch Content
In actual production, the determination of starch content is one of the key indicators. It is recommended to use the thermogravimetric method (TG) in QB/T2957-2008 for testing. This method uses a thermogravimetric analyzer to heat the sample to 600°C and measure the mass percentage of the remaining ash.
Case: A company used this method to test its thermoplastic starch products and found that the ash content was 0.8%, which met the standard requirements (≤1%).
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