Pozor!

Ve Vašem prohlížeči není aktuálně povoleno spouštění Javascriptu. Je možné, že některé funkce nebudou fungovat správně. Pro plnou funkčnost internetového obchodu doporučujeme povolit Javascript. Zde jsou instrukce jak povolit JavaScript ve Vašem webovém prohlížeči.

Zobrazovaná měna: Kč

Zobrazení ceny: bez DPH

NEPLATNÁ ASTM D6474-12 15.12.2012 náhled

Doplňující informace

ASTM D6474-12

Standard Test Method for Determining Molecular Weight Distribution and Molecular Weight Averages of Polyolefins by High Temperature Gel Permeation Chromatography

Automaticky přeložený název:

Standardní zkušební metoda pro stanovení molekulové hmotnosti Distribuce a molekulová hmotnost Průměry polyolefinů vysokou teplotou gelové chromatografie

NORMA vydána dne 15.12.2012

Jazyk
Provedení	PDF - okamžité stažení - 2 005.90 Kč Tištěné - 2 005.90 Kč
Dostupnost	SKLADEM
Cena	2005.90 Kč bez DPH
2 005.90 Kč

Informace o normě:

Označení normy: ASTM D6474-12
Poznámka: NEPLATNÁ
Datum vydání normy: 15.12.2012
Kód zboží: NS-35278
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

Tisk

Odeslat známému

Dotaz

Kategorie - podobné normy:

Termoplasty

Anotace textu normy ASTM D6474-12 :

Keywords:

gel permeation chromatography, molecular weight average, molecular weight distribution, polyolefin, size exclusion chromatography, ICS Number Code 83.080.20 (Thermoplastic materials)

Doplňující informace

Significance and Use

5.1 This test method measures the molecular weight distribution and molecular weight averages of polyethylene (except LDPE) and polypropylene resins. Differences in molecular weight and molecular weight distribution significantly affect physical properties, such as morphology, strength, melt flow etc., and as a result, the final properties of products made from these resins.

1. Scope

1.1 This test method covers the determination of molecular weight distributions and molecular weight averages of linear polyolefins by high temperature gel permeation chromatography (GPC). This test method uses commercially available polystyrene standards and equipment and is applicable to polyethylenes (excluding high pressure low density polyethylene–LDPE) and polypropylenes soluble in 1,2,4-trichlorobenzene (TCB) at 140°C. This test method is not absolute and requires calibration.

1.2 The values stated in SI units, based on IEEE/ASTM S1-10, are to be regarded as the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

D883-24	Standard Terminology Relating to Plastics
D3016-97(2018)	Standard Practice for Use of Liquid Exclusion Chromatography Terms and Relationships
D5296-19	Standard Test Method for Molecular Weight Averages and Molecular Weight Distribution of Polystyrene by High Performance Size-Exclusion Chromatography
E685-93(2021)	Standard Practice for Testing Fixed-Wavelength Photometric Detectors Used in Liquid Chromatography
E691-23	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
IEEE/ASTM S1-10	Standard for Use of the International System of Units (SI): The Modern System (replaces ASTM E 380 and ANSI/IEEE Standard 268-1992)