GB/T 1670-2008 English PDF

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GB/T 1670-2008: Plasticizers -- Test method of heat-resistance
Status: Valid

GB/T 1670: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1670-2008	149	Add to Cart	2 days	Plasticizers -- Test method of heat-resistance	Valid
GB/T 1670-1988	199	Add to Cart	2 days	Plasticizers--Test method of heat-resistance	Obsolete

Similar standards

GB/T 1677   GB/T 1668   GB/T 1676   GB/T 1665   GB/T 1660   

Basic data

Standard ID: GB/T 1670-2008 (GB/T1670-2008)
Description (Translated English): Plasticizers -- Test method of heat-resistance
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G70
Classification of International Standard: 71.100.40; 83.040.30
Word Count Estimation: 5,564
Date of Issue: 2008-06-18
Date of Implementation: 2009-02-01
Older Standard (superseded by this standard): GB/T 1670-1988; GB/T 6489.1-2001
Quoted Standard: GB/T 1664; GB/T 1668
Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123)
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 phthalates, thermal stability test methods of sebacate plasticizers, adipic acid esters. This standard applies to phthalates, adipic acid esters, Determination of thermal stability of sebacate plasticizers. This standard does not apply to diallyl phthalate, because it is dangerous explosive polymerization.

GB/T 1670-2008: Plasticizers -- Test method of heat-resistance

---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.
Plasticizers. Test method of heat-resistance ICS 71.100.40; 83.040.30 G70 National Standards of People's Republic of China Replacing GB/T 1670-1988, GB/T 6489.1-2001 Plasticizers thermal stability test Posted 2008-06-18 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard also replace the GB/T 1670-1988 "Plasticizers thermal stability test" and GB/T 6489.1-2001 "industrial phthaloyl After testing methods formic acid esters heat treatment color measurements. " This standard and GB/T 1670-1988 technical differences are as follows. --- Range added "This standard does not apply to diallyl phthalate, because it has the danger of explosive polymerization." This standard and GB/T 6489.1-2001 technical differences are as follows. --- Procedure Determination of acid added to the sample after the heat treatment. Appendix A of this standard is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee rubber chemical additives and rubber Technical Committee. This standard is drafted by. Shanxi Institute of Chemical Engineering. The main drafters of this standard. Guo Yanping. This standard replaces the standards previously issued as follows. --- GB/T 1670-1981, GB/T 1670-1988. --- GB/T 6489.1-1986, GB/T 6489.1-2001. Plasticizers thermal stability test Warning. Use of this standard should be familiar with normal laboratory practice. This standard does not purport relates to the use of this standard may occur All security issues. Establish appropriate safety and health practices and determine the adaptive management system is the responsibility of the user.

1 Scope

This standard specifies the phthalates, adipates, thermal stability test methods for class sebacate plasticizers. This standard applies to phthalate esters, adipic acid esters, sebacic acid esters Determination of thermal stability plasticizers. This standard does not apply to diallyl phthalate, because it has the danger of explosive polymerization.

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. Determination of GB/T 1664 plasticizer appearance chroma Determination of GB/T 1668 plasticizer and an acid value of acidity

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 After the plasticizer is heated at a temperature which changes the appearance of color and an acid is called the thermal stability of the plasticizer.

4 Instrument

4.1 Heat tubes. borosilicate glass, a length of about 200mm, an outer diameter of 38mm ± 1mm, a wall thickness of 1.5mm ± 0.2mm, and with There are ground glass stopper. 4.2 thermostatic oil bath. temperature can be controlled at 180 ℃ ± 2 ℃, when the test tube containing the sample is inserted into the oil bath temperature is kept constant. (oil bath See Appendix A). Step 5 Analysis Take two heat tubes were put into 70mL or 120mL sample, the lightly covered with ground glass stopper, placed in an oil bath. Oil bath surface It should be higher than the sample level, temperature controlled oil bath at 180 ℃ ± 2 ℃, and to ensure uniform temperature within the oil bath, after 2h after the sample was taken out from the oil bath Tube and air cooled to room temperature (about 1.5h). Determination of acid value and chroma samples. Color according to the provisions GB/T 1664 were measured. Acid number GB/T 1668 provisions were measured. ......

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