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GB/T 31334.3-2015: Test methods for dipped canvas -- Part 3: Stiffness
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31334.3-2015 | English | 169 |
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Test methods for dipped canvas -- Part 3: Stiffness
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GB/T 31334.3-2015
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Basic data | Standard ID | GB/T 31334.3-2015 (GB/T31334.3-2015) | | Description (Translated English) | Test methods for dipped canvas -- Part 3: Stiffness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G47 | | Classification of International Standard | 83.140.99 | | Word Count Estimation | 8,825 | | Date of Issue | 2015-02-04 | | Date of Implementation | 2015-06-01 | | Quoted Standard | GB/T 6529; GB/T 8170 | | Regulation (derived from) | National Standards Bulletin 2015 No. 3 | | 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 | | Summary | This Standard specifies the use of a given stiffness tester side dipped canvas stiffness test methods. This section applies to nylon, polyester, polyester and nylon, polyester dipped canvas measuring stiffness. | GB/T 31334.3-2015: Test methods for dipped canvas -- Part 3: Stiffness---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 3.. Stiffness
ICS 83.140.99
G47
National Standards of People's Republic of China
Dipped canvas Test methods - Part 3. stiffness
Issued on. 2015-02-04
2015-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 31334 "dipped canvas Test Method" is divided into six parts.
--- Part 1. adhesive strength;
--- Part 2. curl and warp density;
--- Part 3. stiffness;
--- Part 4. Dry heat shrinkage;
--- Part 5. tensile properties;
--- Part 6. m² dry weight.
This section GB/T Part of 331,334.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Rubber and rubber products Standardization Technical Committee dipped skeleton material Technical Committee (SAC/TC35/SC13)
Centralized.
This part mainly drafted by. Wuhu Hua Ye Industrial Fabrics Co., Qingdao New Material Science and Technology Industrial Park Development Co., Ltd. Qingdao Branch
Technical University, Qingdao Daxin Branch Rubber Technology Services Limited, Qingdao New Materials Lab.
The main drafters of this section. Zhu Ze He, Bing Xin, Liu Li, Feng Shaohua.
Dipped canvas Test methods - Part 3. stiffness
1 Scope
This section provides stiffness was measured using dipped canvas stiffness test methods.
This section applies to nylon, polyester, polyester and nylon, polyester dipped canvas measuring stiffness.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6529 Textiles Standard conditioning and testing atmosphere
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Bending length bendinglength
Hold one end, the other end of the sample dipped canvas rectangle suspended curved length to 7.1 ° when under their own weight.
3.2
Flexural rigidity flexuralrigidity
Unit width dipped canvas sample small changes in their moment than the corresponding change in the curvature.
4 Test principle
The sample is placed along the longitudinal direction of the platform stiffness meter level platform to promote the sample so that it extends under the weight of the platform and a natural bent,
When the head end of the sample is exposed to 41.5 ° angle to the horizontal slope, then extended length equal to twice the length of the curved sample (see
Appendix A), in order to calculate the sample bending length and flexural rigidity to flexural rigidity characterize the stiffness of the sample. When the head end of the sample can not be oblique
When the surface contact with the sample of the present method is not applicable.
5 instruments and equipment
The use of part stiffness tester shown in Figure 1, shall meet the following requirements.
a) having a width of (40 ± 2) mm platform length not less than 400mm, supported on the desktop at least above the height of 350mm;
b) by the leading edge of the platform and ramp angle of 41.5 ° to the horizontal table;
c) the surface of the platform to prevent sample adhesion lubricious coating;
d) a horizontal measurement and adjustment means;
e) from the platform at the leading edge of 10mm marked lines;
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