Standard Classification System and Basis for Specification for Filled Polytetrafluoroethlyene (PTFE) Molding and Extrusion Materials Using ASTM Methods
NORMA vydaná dňa 1.5.2019
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Designation standards: ASTM D4745-19
Publication date standards: 1.5.2019
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Kategória: Technické normy ASTM
This specification covers polytetrafluoroethylene(PTFE) filled molding compounds made with virgin PTFE resins defined in a certain specification except Types I, IV, V, and VI. PTFE compounds are classified into two types which are Type I as the nonpelletized material use for general purpose compression molding and Type II as the pelletized or free-flowing material use for molding, automatic molding or ram extrusion. Each type is further classified into thirteen grades distinguished by the nature of the filler. Different tests shall be conducted in order to determine the following properties: filler content, bulk density, specific gravity, and tensile properties.
Keywords:
filled compounds, filled polytetrafluoroethylene, fluorocarbon polymers, fluoropolymer, fluoropolymer composites, polytetrafluoroethylene, PTFE,, ICS Number Code 83.140.99 (Other rubber and plastic products)