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ASTM D5155-14e1
Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates (Includes all amendments And changes 8/19/2019).
Automaticky přeložený název:
Standardní zkušební metody pro Polyuretanové surovin: Stanovení obsah isokyanátu aromatické isokyanáty
NORMA vydána dne 1.11.2014
Informace o normě:
Označení normy: ASTM D5155-14e1
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2014
Kód zboží: NS-625238
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D5155-14e1 :
Keywords:
isocyanates, isocyanates aromatic, methylene-bis-(4-phenylisocyanate), polymethylene polyphenylisocyanate, polyurethane, raw materials, test method, titration, toluene diisocyanate,, ICS Number Code 83.080.20 (Thermoplastic materials)
Doplňující informace
| Significance and Use | ||||||||||
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5.1 These test methods are to be used for research or for quality control to characterize isocyanates used in polyurethane products. |
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| 1. Scope | ||||||||||
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1.1 These test methods measure the isocyanate content of aromatic isocyanates used as polyurethane raw materials. 1.1.1 Test Method A—Unheated toluene-dibutylamine determines the toluene diisocyanate content, the amine equivalent and the isocyanate content of refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. Other isomers, if present, will be included in the determination. This test method is also applicable to other isocyanates of suitable reactivity and solubility. 1.1.2 Test Method B—Heated toluene-dibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 1.1.3 Test Method C—Unheated trichlorobenzene-toluene-dibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene-di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. Note 1: Method C of this test method is equivalent to Method B
of ISO 14896.
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| 2. Referenced Documents | ||||||||||
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