Cookies
Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
ASTM D3349-17
Standard Test Method for Absorption Coefficient of Ethylene Polymer Material Pigmented with Carbon Black
NORMA vydaná dňa 1.3.2017
Informácie o norme:
Označenie normy: ASTM D3349-17
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.3.2017
Kód tovaru: NS-677202
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D3349-17 :
Keywords:
absorption coefficient, carbon black, ethylene polymer,, ICS Number Code 83.080.20 (Thermoplastic materials)
Doplňujúce informácie
| Significance and Use | ||||
|
4.1 The absorption coefficient of polyolefin polymer pigmented with carbon black is useful to judge the degree and uniformity of dispersion of the pigment, and the adequacy of the quantitative level of pigment addition. These factors are used to predict the performance of the polymer material in response to prolonged exposure to ultraviolet light as evidenced by minimal changes in specific properties. Note 1: This test method was developed to evaluate ethylene
polymer materials pigmented with small particle size carbon blacks
suitable for UV protection. It is not known how accurate and
reproducible the test would be with larger (35 nm or greater)
particle size blacks.
|
||||
| 1. Scope | ||||
|
1.1 This test method measures the amount of light transmitted through a film of carbon black pigmented ethylene polymer. 1.2 After calculation of the amount of light and film thickness, an absorption coefficient is calculated. 1.3 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only. 1.4 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 | ||||
|
Odporúčame:
Aktualizácia technických noriem
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
