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GB/T 31334.4-2016: Test methods for dipped canvas -- Part 4: Hot air thermal shrinkage
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31334.4-2016 | English | 119 |
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Test methods for dipped canvas -- Part 4: Hot air thermal shrinkage
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GB/T 31334.4-2016
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Basic data | Standard ID | GB/T 31334.4-2016 (GB/T31334.4-2016) | | Description (Translated English) | Test methods for dipped canvas -- Part 4: Hot air thermal shrinkage | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G47 | | Classification of International Standard | 83.140.99 | | Word Count Estimation | 6,617 | | Date of Issue | 2016-12-13 | | Date of Implementation | 2017-07-01 | | Regulation (derived from) | National Standard Notice No.125 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 31334.4-2016: Test methods for dipped canvas -- Part 4: Hot air thermal shrinkage---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test methods for dipped canvas - Part 4. Hot air thermal shrinkage
ICS 83.140.99
G47
National Standards of People's Republic of China
Test method for dipped canvas - Part 4. Dry heat shrinkage
2016-12-13 released
2017-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 31334 "dipping canvas test method" is divided into six parts.
Part 1. Adhesive strength;
- Part 2. meridional crimp and density;
Part 3. stiffness;
- Part 4. Dry heat shrinkage;
- Part 5. Tensile properties;
- Part 6. square meters dry weight.
This part is part 4 of GB/T 31334.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This section is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Rubber and Rubber Products Standardization Technical Committee dipping skeleton material sub-technical committee (SAC/TC35 /
SC13).
This part of the drafting unit. Wuhu Huaye Industrial Fabric Co., Ltd., Qingdao New Materials Science and Technology Industrial Park Development Co., Ltd., Qingdao Science and Technology
Science, Ningbo Karcher Tape Co., Ltd., Qingdao Sinochem New Materials Laboratory.
The main drafters of this part. Zhou Yichang, Wang Bingxin, Liu Li, Ying Jianli, Li Jian.
Test method for dipped canvas - Part 4. Dry heat shrinkage
1 Scope
This part of GB/T 31334 specifies the test method for the determination of dry heat shrinkage of dipped canvas using a horizontal placement method.
This part is applicable to the test of dry heat shrinkage performance of dipped canvas made of fiber.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6529 Standard atmosphere for textiles for humidity control and testing
Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170
GB/T 32110 Terms and definitions of dipping skeleton materials
HG/T 2765.4 Blue gel indicator, discolored silica gel and cobalt-free discoloration silica gel
3 terms and definitions
The terms and definitions defined in GB/T 32110 apply to this document.
4 test principle
Dipped canvas samples after a certain temperature and a certain time after drying, measuring its warp or weft contraction length, the contraction length and dip
The ratio of the original length of the canvas is the dry heat shrinkage of the dipped canvas, which characterizes the dry heat shrinkage of the dipped canvas under certain conditions,
Rate representation.
5 equipment and tools
5.1 constant temperature oven. the temperature can be adjusted to 150 ℃ ± 2 ℃, drying chamber volume of not less than 0.4m3.
5.2 metal mesh. square hole 20mm × 20mm, wire diameter of 2.0mm ± 0.2mm.
5.3 steel plate ruler. the minimum scale value of 0.5mm.
5.4 Dryer. Use the blue gel indicator specified in HG/T 2765.4 as a desiccant.
6 Test General
6.1 Test environment
The test shall be carried out in the standard atmospheric environment specified in GB/T 6529.
6.2 Sampling
Cut a piece of 1m long dip canvas cloth cloth, cloth should be smooth, there should be no visible flaws.
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