GB/T 35807-2018 in English
VALIDRubber,vulcanized—Determination of thermal diffusivity—Flash method
- Issued on:2018-02-06
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 35807-2018硫化橡胶 热扩散系数的测定 闪光法》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC2（全国橡胶与橡胶制品标准化技术委员会通用试验方法分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
1. Background and significance of the standard
GB/T 35807—2018 "Determination of Thermal Diffusivity of Vulcanized Rubber - Flash Method" is an important standard for determining the thermal diffusion properties of vulcanized rubber at different temperatures. This standard is based on the principle of the flash method and calculates the thermal diffusivity of the material by detecting the temperature rise time on the back of the sample.
2. Overview of the main contents of the standard
This standard specifies in detail the test method for determining the thermal diffusivity of vulcanized rubber, including sample preparation, equipment requirements, test steps and data processing. Its core content can be summarized as follows:
- Scope of application: Applicable to vulcanized rubber with a temperature range of 20°C to 250°C and a thermal diffusivity greater than 0.01 mm²/s.
- Determination principle: The thermal diffusivity is calculated by irradiating the front of the sample with a high-intensity energy pulse and detecting the temperature rise time on the back.
- Equipment requirements: including flash source, sample cell, detector and data acquisition system, etc.
- Test steps: involving sample preparation, surface treatment, temperature control and data acquisition and analysis.
3. Standard Framework Comparison Table
| Standard Dimensions | GB/T 35807—2018 | International Similar Standards | User-Defined Extensions |
|---|---|---|---|
| Determination Principle | Flash Method | Guarded Hot Plate Method, Hot Wire Method | - |
| Temperature Range | 20°C to 250°C | Usually room temperature to high temperature (depending on the equipment) | Can be adjusted according to needs |
| Specimen Thickness Requirements | 1 mm to 3 mm | Generally 0.5 mm to 5 mm | - |
4. Implementation suggestions and precautions
Case study:When a tire company applied this standard, it significantly improved the test accuracy by optimizing the sample surface treatment process (such as uniformly spraying graphite coating). At the same time, it regularly used standard materials with known thermal diffusion coefficients to calibrate the equipment to ensure the stability of long-term measurements.
Implementation suggestions:
- Equipment selection:Choose a flash system with stable performance, giving priority to equipment with high energy density and fast response capabilities.
- Specimen preparation:Ensure that the sample surface is defect-free and uniform. It is recommended to use standard sizes (diameter 10-12.5 mm, thickness 1-3 mm).
- Data Processing:The thermal diffusion coefficient is calculated strictly according to the formula, and the reliability of the results is ensured through repeated tests.
- Quality Control:The equipment is calibrated regularly and the measurement accuracy is verified using standard materials.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 3516-2024 in English
Rubber—Determination of solvent extract
2024-09-29 -
GB/T 47192-2026 in English
Thermoplastic elastomer—Determination of volatile organic compounds—Thermodesorption and gas chromatographic method with mass spectrometric detection
2026-02-27 -
GB/T 32365-2015 in English
Silicone rubber compound―Classification and system nomenclature
2015-12-31 -
GB/T 9867-2008 in English
Rubber vulcanized or thermoplastic-Determination of abrasion resistance using a rotating cylindrical drum device
2008-04-01 -
GB/T 528-2009 in English
Rubber，vulcanized or thermoplastic - Determination of tensile stress-strain properties
2009-04-24 -
GB/T 17782-1999 in English
Rubber, vulcanized - Test method of aging by heat and air pressure
1999-06-29 -
GB/T 7043.1-2001 in English
Rubber--Determination of copper content by atomic absorption spectrometry
2001-08-02 -
GB/T 11201-2002 in English
- Determination of iron content by atomic absorption spectrometry
2002-10-15 -
GB/T 33046-2016 in English
Rubber products一Determination the content of cobalt一 Atomic absorption spectrometry
2016-10-13 -
GB/T 14834-2009 in English
Rubber vulcanized or thermoplastic - Determination of tendency to adhere to and corrode metals
2009-04-24
