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基本信息

【范围】	This document describes a method for determining the specific gravity of tubing, fabricated from polytetrafluoroethylene, after a controlled heating and cooling cycle. The specific gravity obtained by this method is a measure of relative molecular weight of the resin. The measure, termed relative specific gravity (RSG), increases with decreasing molecular weight (see 2.3).strRefField
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引用文件/被引文件

ASTM D 4895-89

Standard Specification for Polytetrafluoroethylene (PTFE) Produced from Dispersion

ASTM D 1505-85

Standard Method of Test for Density of Plastics by the Density-Gradient Technique

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包含图表

Oven Cycle

FIGURE 2