|
US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 21462-2008: Evaluation procedure of chloroprene rubber (CR)
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21462-2008 | English | 209 |
Add to Cart
|
3 days [Need to translate]
|
Evaluation procedure of chloroprene rubber (CR)
| Valid |
GB/T 21462-2008
|
PDF similar to GB/T 21462-2008
Basic data | Standard ID | GB/T 21462-2008 (GB/T21462-2008) | | Description (Translated English) | Evaluation procedure of chloroprene rubber (CR) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G35 | | Classification of International Standard | 83.060 | | Word Count Estimation | 9,995 | | Date of Issue | 2008-02-26 | | Date of Implementation | 2008-08-01 | | Quoted Standard | GB/T 528-1998; GB/T 1232.1-2000; GB/T 1233-1992; GB/T 6038-2006; GB/T 9869-1997; GB/T 16584-1996; GB/T 19187-2003; ASTM D 4483 | | Adopted Standard | ASTM D3190-2006, NEQ | | Regulation (derived from) | National Standard Approval Announcement 2008 No.3 (Total No.116) | | 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 criteria evaluated material chloroprene rubber vulcanization characteristics used, standard test formulations, equipment and operating procedures, and evaluation of the stress-strain performance. This standard applies to sulfur modulating CR, thiol modulating CR. | GB/T 21462-2008: Evaluation procedure of chloroprene rubber (CR)---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.
Evaluation procedure of chloroprene rubber (CR)
ICS 83.060
G35
National Standards of People's Republic of China
Chloroprene rubber (CR) Evaluation Method
Posted 2008-02-26
2008-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard American Society for Testing and Materials standard ASTMD3190.2006 "Standard Test Method for Rubber chloroprene rubber (CR)
Evaluation of "non-equivalent.
This standard ASTMD3190.2006 main differences are as follows.
--- Removed ASTM non-SI units;
--- Chapter 2, "Normative references", the increase in the introductory phrase; reference standard except ASTMD4483, the rest have been corresponding
National standards in place;
--- Delete ASTM Chapter 3, "Summary of Method" and Chapter 4, "The importance and use";
--- 5.2 Preparation of raw rubber, by a roll temperature "50 ℃ ± 5 ℃" changed to "45 ℃ ± 5 ℃";
--- Table 2, during the kneading by a roll temperature "50 ℃ ± 5 ℃" changed to "45 ℃ ± 5 ℃";
--- Table c), 2 3/4 increase cutter 1;
--- Remove the laboratory Banbury evaluation method;
--- Increase in Chapter 8, "Test Report" column item.
The standard proposed by China Petroleum and Chemical Corporation.
This standard by the National Standardization Technical Committee rubber and rubber products, synthetic rubber Technical Committee (SAC/TC35/SC6)
Centralized.
This standard was drafted. China PetroChina Lanzhou Chemical Research Center, Chongqing Changshou Chemical Co., Ltd.,
Shanxi Synthetic Rubber Group Co., Ltd.
The main drafters of this standard. Diyue Qin, Tu Chi Ming, Ma Dong-ju, Sun Lijun, Wu Yi, Fang Fang, Zhang Fu East.
This standard is the first release.
Chloroprene rubber (CR) Evaluation Method
Warning. Use of this standard shall have a person experiences regular lab work. This standard does not point out all possible security issues.
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 criteria for material evaluation chloroprene rubber (CR) vulcanization characteristics used, standard test formulations, equipment and operating procedures
And the evaluation of stress - strain performance.
This standard applies to sulfur regulated CR, thiol regulated CR.
NOTE. You can use other regulated CR sulfur regulated or evaluated thiol regulated the CR.
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 revisions do not apply to 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 528-1998 vulcanized rubber or thermoplastic rubber tensile stress strain properties (eqv ISO 37.1994)
GB/T 1232.1-2000 unvulcanized rubber disc shear viscometer - Part 1. Determination of Mooney viscosity (neq
ISO 289-1.1994)
GB/T 1233-1992 rubber compound curing characteristics of the initial determination of the Mooney viscometer (eqv ISO 667. 1981)
GB/T 6038-2006 Rubber test feed ingredients, mixing and vulcanization - Equipment and procedures (ISO 2393.1994, MOD)
GB/T 9869-1997 Determination of rubber vulcanization characteristics (oscillating disc rheometer method) (idt ISO 3417.1991)
GB/T 16584-1996 Determination of rubber vulcanization characteristics with no rotor rheometer (eqv ISO 6502.1991)
GB/T 19187-2003 Rubber, raw synthetic sampling program
ASTMD4483 rubber and carbon black industries Standard Test Method for Determination of precision
3 standard test formulation
Standard test formulation shown in Table 1.
Table 1 Standard Test Formulation
Formulation 1234
CR
Sulfur regulated 100.00 100.00
Mercaptan regulated 100.00 100.00
Stearate 0.50 0.50
Magnesia a 4.00 4.00 4.00 4.00
Industrial reference carbon black (IRB) No. 7 25.00 25.00
Zinc Oxide 5.00 5.00 5.00 5.00
Methyl-thiazol-2-thione accounted for 80% of the cross-linking agent 0.45 0.45
Total 109.50 134.50 109.45 134.45
Feeding coefficient b
MIM (Cam head) 0.76 0.63 0.76 0.63
MIM (Banbury head) 0.65 0.54 0.65 0.54
a iodine value (80 ~ 100) mg/g, a purity of ≥92%.
b For MIM, rubber, carbon black is accurate to 0.01g, complexing agents to the nearest 0.001g.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21462-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 21462-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 21462-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21462-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|