ANSI/ASTM D6265-1998 使用挤压机过滤器试验将污染物从聚合物中分离的操作规程

标准号：ANSI/ASTM D6265-1998
中文标准名称：使用挤压机过滤器试验将污染物从聚合物中分离的操作规程
英文标准名称：Practice for Separation of Contaminants in Polymers Using an Extruder Filter Test
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1998/8/17 12:00:00
中国标准分类号：G31
国际标准分类号：83.020
适用范围：This practice covers a means to separate the unmolten particles, gels, and impurities contaminating a polymer sample. The procedure may be used to remove gels and incompatible materials that may cause imperfections in the final extruded product. Under pressure, most gels will break up or deform and pass through a wire mesh filter, however high molecular weight gels may not break up or deform. If desired, materials isolated on a wire mesh filter can subsequently be identified by spectroscopic or other analytical means. -Although not presented as a quantitative method, the procedure presented in this practice may be used to provide quantitative results at the discretion of the user. The user assumes the responsibility to verify the reproducibility of quantitative results. Detection limit depends on the mesh size of the filter screen, but the procedure is generally applicable to the separation of immiscible contaminants present at concentrations greater than 0.1 %. The values stated in SI units are to be regarded as the standard. This standard does not purport to address 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. For specific hazards statements, see Section 8. Note 2 -There is no equivalent ISO standard.