GB/T 31334.4-2016 in English
VALIDTest methods for dipped canvas--Part 4: Hot air thermal shrinkage
- Issued on:2016-12-13
- Implemented on:2017-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 31334.4-2016浸胶帆布试验方法 第4部分：干热收缩率》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
GB/T 31334.4—2016 Standard Overview
GB/T 31334.4—2016 "Test Methods for Dipped Canvas Part 4: Dry Heat Shrinkage" is a test method for the dry heat shrinkage performance of dipped canvas under specific conditions. This standard mainly stipulates the test method for determining the dry heat shrinkage of dipped canvas in a horizontal position, and is applicable to dipped canvas made of fiber materials.
Background of Standard Formulation
With the continuous improvement of the performance requirements of dipped canvas in the industrial field, dry heat shrinkage, as an important indicator to measure its stability, urgently needs a unified test method. This standard was proposed by the China Petroleum and Chemical Industry Federation and is managed by the National Technical Committee for Standardization of Rubber and Rubber Products. It aims to standardize the industry's testing process and improve product quality.
Technology Evolution Analysis
Compared with the earlier version, GB/T 31334.4—2016 has been optimized in terms of equipment accuracy, test environment control and data processing. The precise temperature control (±2°C) of the constant temperature oven and the blue glue indicator as a desiccant are introduced to ensure the repeatability and accuracy of the test results.
Comparison of standard frameworks
| Dimensions | GB/T 31334.4—2016 | Comparison with old standards | Differences in international standards |
|---|---|---|---|
| Test conditions | Constant temperature oven (150℃±2℃), drying time 30 minutes | Temperature control is not accurate, drying time is not clear | In line with ISO standards |
| Specimen preparation | 250mm×250mm specimen, marked with 5 groups of measuring points | Specimen dimensions are not uniform | Meet international general requirements |
| Data processing | Average value calculation, rounded to one decimal place | No specific rounding rules are specified | Consistent with GB/T 8170 |
Implementation suggestions
Equipment selection:It is recommended to use a constant temperature oven with precise temperature control function, equipped with a metal wire mesh and blue glue indicator to ensure that the test environment meets the standard requirements.
Staff training:It is recommended to conduct systematic training for test personnel, focusing on mastering the standardized operations of sample preparation, measurement point marking and data recording.
Quality control:Calibrate the equipment regularly to ensure that the oven temperature error is within the allowable range, and keep complete test records for inspection.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 21538-2026 in English
Rubber roller for metal sheet coating
2026-02-27 -
GB/T 18173.1-2012 in English
Polymer water-proof materials - Part 1：Water-proof sheet
2012-09-03 -
GB/T 14833-2020 in English
Synthetic materials sports field surfaces
2020-03-31 -
GB/T 3688-2025 in English
Test method for adhesion performance of V-belt cords
2025-04-25 -
GB/T 40725-2021 in English
Test method of dipped cord and rubber adhesive peeling performance
2021-10-11 -
GB/T 31061-2014 in English
Cork-rubber gasket for shield-driven tunnel
2014-12-22 -
GB/T 36768-2018 in English
Dipped polyamide canvas technical requirements and evaluation methods
2018-09-17 -
GB/T 33091-2016 in English
Sieve of polyurethane elastomer
2016-10-13 -
GB/T 36375-2018 in English
Railway transportation--Primary rubber spring suspension--General technical requirement
2018-06-07
