GB/T 39639-2020 in English
VALIDTest methods of dynamic adhesive properties for dipped cords
- Issued on:2020-12-14
- Implemented on:2021-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
| Standard No: | GB/T 39639-2020 |
| Document status: | VALID |
| Title in English: | Test methods of dynamic adhesive properties for dipped cords |
| Title in Chinese: | 浸胶帘线、线绳动态粘合性能试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-12-14 |
| Implemented on: | 2021-07-01 |
| ICS Classification: | 83.140.99-Other rubber and plastics products |
| Chinese Classification: | G47-Other rubber products |
| Professional Classification: | GB-National Standard |
| Related Topics: | car cord
Adhesive properties glue line Dynamic Viscosity Test gel property method Dynamic Viscosity Test Method Dip t t dip dipped wire GBT39639 GB/T 39639-2020 Dip line execution Liquid phase method linearity failed How to generate singlet oxygen dynamic Singlet Oxygen Test Method Stripping force test of dipped cord |
《GB/T 39639-2020浸胶帘线、线绳动态粘合性能试验方法》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC13（全国橡胶与橡胶制品标准化技术委员会浸胶骨架材料分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
Analysis of the core content of the standard
This standard specifies the determination of the adhesion performance of dipped cord/cord and rubber under dynamic shear conditions by means of the dynamic adhesion test device. The key indicators include:
| Performance index | Test method | Characterization parameter | Applicable materials |
|---|---|---|---|
| Adhesion retention rate | Test after dynamic test for a set time | Percentage value | Nylon/polyester cord |
| Number of shedding times | Continuous test until failure | Number of reciprocating times | Cord/Rope |
Key Technical Requirements
Test Equipment Specifications
Dynamic Adhesion Test Device must meet the following requirements:
- Swing Amplitude Accuracy: 1.0-2.5mm±0.1mm
- Temperature Control Range: Room Temperature -100℃±5℃
- Recommended Value of Load Weight Mass Difference: 0.5kg
Key Points of Sample Preparation
Take the polyester cord for a certain passenger car tire as an example:
- Sampling Length ≥500mm
- The embedded length of the rubber module is 12.5mm
- After vulcanization, the remaining glue needs to be cut off and there should be no bubble defects.
Suggestions for the implementation of standards
Optimization of test conditions
Recommended parameters for different materials:
| Material type | Temperature (℃) | Frequency (Hz) | Typical load (kg) |
|---|---|---|---|
| Nylon cord | 80-100 | 13 | 2.5/3.0 |
| Polyester cord | Room temperature -50 | 13 | 2.5/3.0 |
Data Recording Specifications
Special attention should be paid to:
- Adhesion retention rate should be rounded to 1 decimal place
- Number of shedding times should be recorded to integer
- Comparative tests should maintain the same adjustment conditions
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