GB/T 3512-2014 PDF English
US$70.00 · In stock · Download in 9 secondsGB/T 3512-2014: Rubber, vulcanized or thermoplastic -- Accelerated ageing and heat resistance tests -- Air-oven method Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 3512: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3512-2014 | English | 70 |
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Rubber, vulcanized or thermoplastic -- Accelerated ageing and heat resistance tests -- Air-oven method
| Valid |
| GB/T 3512-2001 | English | 279 |
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3 days
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Rubber, vulcanized or thermoplastic -- Accelerated ageing and heat resistance tests -- Air-oven method
| Obsolete |
| GB/T 3512-1983 | English | 199 |
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Rubber, vulcanized--Accelerated ageing or heat-resistance test--Air-oven method
| Obsolete |
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GB/T 3512-2014: Rubber, vulcanized or thermoplastic -- Accelerated ageing and heat resistance tests -- Air-oven method
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3512-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.060
G 40
GB/T 3512-2014 / ISO 188.2011
Replacing GB/T 3512-2001
Issued on. DECEMBER 22, 2014
Implemented on. JUNE 01, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
Introduction... 5
1 Scope... 7
2 Normative references... 7
3 Principle... 7
4 Apparatus... 8
5 Calibration... 11
6 Test pieces... 11
7 Time interval between vulcanization and testing... 12
8 Ageing conditions (duration and temperature)... 13
9 Procedure... 13
10 Expression of results... 14
11 Precision... 14
12 Test report... 14
Annex A (Informative) Determination of the air speed in ovens with
forced air circulation... 16
Annex B (Informative) Precision... 18
Annex C (Informative) Guidance for using precision results... 26
Annex D (Normative) Calibration schedule... 28
Bibliography... 30
Foreword
This Standard is drafted according to the rules provided in GB/T 1.1-2009.
This Standard replaces GB/T 3512-2001 Rubber, vulcanized or thermoplastic -
Accelerated ageing and heat resistance tests - Air-oven method; compared with GB/T
3512-2001, the main technical changes are as follows.
— Add test method of rubber tensile performance ISO 37 and test method of rubber
hardness ISO 48 (as shown in 3.1 of this edition);
— Add test method of multicell ageing oven, cabinet type ageing oven and forced
ventilation ageing oven and its wind speed (as shown in 4.1.2, 4.1.3, 4.1.4 of this
edition);
— Add provision for equipment verification (as shown in chapter 5 of this edition);
— Use ISO 23529 to replace GB/T 2941 (as shown in chapter 8 of 2001 edition);
— Add results of precision test (as shown in chapter 11 of this edition; chapter 10 of
2001 edition).
Using translation method, this Standard equivalently adopts ISO 188.2011 Vulcanized
rubber or thermoplastic elastomer hot air - Accelerated aging heat resistance test. The
Chinese documents, in this Standard, which have corresponding relationship with the
normative international documents are as follows.
— GB/T 528-2009 Rubber, vulcanized or thermoplastic - Determination of tensile
stress-strain properties (ISO 37.2005, IDT);
— GB/T 2941-2006 Rubber - General procedures for preparing and conditioning test
pieces for physical test methods (ISO 23529.2004, IDT);
— GB/T 6031-1998 Rubber, vulcanized or thermoplastic - Determination of hardness
(hardness between 10 IRHD and 100 IRHD) (idt ISO 48.1994).
This Standard was proposed by China Petroleum and Chemical Industry Association.
This Standard shall be under the jurisdiction of Branch of National Rubber and Rubber
Goods Technical Committee for Standardization General Test Method (SAC/TC 35/SC 2).
Main drafting organizations of this Standard. Guangzhou Synthetic Material Research
Institute Co., Ltd., National Rubber and Latex Products Quality Supervision Test Center,
Fengshen Tyre Co., Ltd., Cooper Chengshan (Shandong province) Co., Ltd., Qingdao Yi
Kesi New Material Co., Ltd., Shandong Bayi Tyre Manufacture Co., Ltd., Jiangsu Mingzhu
Test Machinery Co., Ltd., Beijing Rubber Industry Research and Design Institute, Guizhou
Tyre Co., Ltd.
Main drafters of this Standard. Xie Yufang, Yi Jun, Dao Jinahua, Zheng Xiangqian, Ren
Shaowen, Wang Jianfeng, Lin Qingju, Wang Daiqiang, Liu Qiang, Zhao Jianlin, Zhu Ming,
Xie Junfang, Li Jing, Feng Ping.
The historical versions replaced by this Standard are as follows.
— GB/T 3512-1983 (1989), GB/T 3512-2001.
1 Scope
This Standard specifies accelerated ageing or heat resistance tests on vulcanized or
thermoplastic rubbers. Two methods are given.
2 Normative references
The articles contained in the following documents have become part of this document
when they are quoted herein. For the dated documents so quoted, all the modifications
(including all corrections) or revisions made thereafter shall be applicable to this
document.
GB/T 25269-2010 Rubber - Guide to the calibration of test equipment (ISO
18899.2004, IDT)
3 Principle
Test pieces are subjected to controlled deterioration by air at an elevated temperature and
at atmospheric pressure, after which specified properties are measured and compared
with those of unaged test pieces.
4 Apparatus
The oven shall be of such a size that the total volume of the test pieces does not exceed
10 % of the free space in the oven. Provision shall be made for suspending test pieces so
that they are at least 10 mm from each other and, in cabinet ovens and ovens with forced
air circulation, at least 50 mm from the sides of the oven.
5 Calibration
The test apparatus shall be calibrated in accordance with Annex D.
6 Test pieces
It is recommended that the accelerated ageing or heat resistance test be carried out on
test pieces prepared and conditioned as required for the appropriate property tests, and
not on complete products or sample sheets, and that their form be such that no
mechanical, chemical or heat treatment will be required after ageing.
7 Time interval between vulcanization and testing
Unless otherwise specified for technical reasons, the following requirements shall be
observed.
8 Ageing conditions (duration and temperature)
The period required to obtain a given degree of deterioration of the test pieces will depend
upon the type of rubber under examination.
9 Procedure
Heat the oven to the operating temperature and place the test pieces in it.
10 Expression of results
The results shall be expressed in accordance with the International Standard for the
appropriate property tests.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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