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GB/T 1233-2008: Rubber, unvulcanized -- Determinations of pre-vulcanization characteristic using a shearing disc viscometer
Status: Valid GB/T 1233: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1233-2008 | English | 169 |
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Rubber, unvulcanized -- Determinations of pre-vulcanization characteristic using a shearing disc viscometer
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GB/T 1233-2008
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| GB/T 1233-1992 | English | 199 |
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Rubber, unvulcanized--Determination of prevulcanization characteristics--Shearing disk method
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GB/T 1233-1992
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PDF similar to GB/T 1233-2008
Basic data | Standard ID | GB/T 1233-2008 (GB/T1233-2008) | | Description (Translated English) | Rubber, unvulcanized -- Determinations of pre-vulcanization characteristic using a shearing disc viscometer | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G40 | | Classification of International Standard | 83.060 | | Word Count Estimation | 7,767 | | Date of Issue | 2008-05-15 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB/T 1233-1992 | | Quoted Standard | GB/T 1232.1; GB/T 14838 | | Adopted Standard | ISO 289-2-1994, MOD | | Regulation (derived from) | National Standard Approval Announcement 2008 No.8 (Total No.121) | | 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 method of initial uncured rubber vulcanization characteristics using a shearing disc viscometer. This standard applies to the evaluation uncured rubber under high temperature conditions can save time and workability. | GB/T 1233-2008: Rubber, unvulcanized -- Determinations of pre-vulcanization characteristic using a shearing disc viscometer
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Rubber, unvulcanized. Determinations of pre-vulcanization characteristic using a shearing disc viscometer
ICS 83.060
G40
National Standards of People's Republic of China
Replacing GB/T 1233-1992
Determination of the initial uncured rubber vulcanization characteristics
Using a shearing disc viscometer was measured
(ISO 289-2.1994, Rubber, unvulcanized-Determinations
Part 2. Determinationofpre-vulcanizationcharacteristic, MOD)
Posted 2008-11-01 2008-05-15 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revised standard adopts ISO 289-2.1994 "unvulcanized rubber shearing disc viscometer - Part 2. Initial vulcanization
Determination of properties "(in English).
This standard replaces GB/T 1233-1992 "rubber compound early cure characteristics measured Mooney viscometer."
This standard is based on ISO 289-2.1994 redrafted.
This standard and ISO 289-2.1994 The main difference, causes changes reg and is structured as follows.
--- "2 Normative references" in.
a) with GB/T 1232.1-2000 "unvulcanized rubber disc shear viscometer - Part 1. Mooney viscosity
Determination of the degree of "instead of ISO 289-1.1994, its main technical difference is. GB/T 1232.1-2000 chapters in the instrument
Section increases the rectangular pattern of the mold cavity; deleting the ISO 289-1 in chapter precision. the 1994 plan content and fine
Density results.
b) with the GB/T 14838-1993 replaces ISO /T R9272. 1986, both in the basic concepts, calculation methods and application
There is no difference in terms of technology.
China needs to adapt to the integrity of the test results.
--- Added scorch time and cure index using a large rotor and small rotor when the exposition (see Chapter 8), this provision has more
Body, improve the operability.
Time (see Figure 1).
For ease of use, this standard did Edit following modifications.
a) Remove the preface to international standards;
b) "this International Standard" be replaced by "this standard";
c) use the decimal point. "" instead of a comma as the decimal point "."
The main difference compared with the standard GB/T 1233-1992 as follows.
--- Modify the standard name;
--- Increasing the foreword;
--- Increased in Chapter 2, normative references;
--- Increased Chapter 3 Terms and definitions;
--- Delete Chapter 7 test procedure;
--- Deleted Chapter 8 8.2 "number of samples in less than two arithmetic mean value of the test results..";
--- Deleted Chapter 8 8.4 "measurement values \u200b\u200bare accurate to 0.5min results take on integer values..";
--- Increasing the precision of Chapter 9;
--- Increase in the content of the test report (s edition Chapter 10).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standards Commission rubber rubber physical and chemical test methods Technical Committee (SAC/TC35/SC2) centralized.
This standard was drafted. Guizhou Tyre Co., Ltd.
The main drafters of this standard. Feng Ping.
This standard replaces the standards previously issued as follows.
--- GB 1233-1982; GB/T 1233-1992.
Determination of the initial uncured rubber vulcanization characteristics
Using a shearing disc viscometer was measured
Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked
question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the method for the initial uncured rubber vulcanization characteristics with shearing disc viscometer.
This standard applies to the evaluation of uncured rubber in high temperature conditions can save time and workability.
NOTE. None of the test methods are considered with all the different types of processes, such as kneading, calendering, extrusion, curing interconnected, thus indicating the test results
Compound should be considered prior specific processes.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revised edition are not suitable for this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 1232.1 - Part 1 uncured rubber measured by shearing disc viscometer. Mooney viscosity measurement
(GB/T 1232.1-2000, neq ISO 289-1.1994)
GB/T 14838 Rubber and rubber products - Determination of precision for test method standards (GB/T 14838-1993, neq ISO /T R
9272. 1986)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Mooney viscosity rises from the smallest to the minimum time required for a predetermined value, including warm-up time. When using a large rotor, a predetermined rise to five
Mooney Mooney value or 35, up to three predetermined value or 18 Mooney Mooney value when using a small rotor. Corresponding to the initial curing time
Principle 4
This standard is at a predetermined temperature mix Mooney viscosity change with time of the test, determined according to Mooney viscosity rises to a predetermined value
When the time required. The temperature and the temperature used in processing, respectively.
5 Test Instruments
Apparatus complies with GB/T 1232.1, which allows the use of small rotor when testing high viscosity gum.
6 Sample preparation
Two round specimens prepared from the mix through thin material. The preparation process in line with the provisions of GB/T 1232.1 of.
7 test temperature
Choice and mix material processing related to the test temperature.
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