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ASTM D7472-2019 EFEP-含氟聚合物模塑材料和挤压材料规格 Standard Specification for EFEP-Fluoropolymer Molding and Extrusion Materials
<div class="SectionLevel2"> <p class="subsec1 cdone2"><span class="Head3 cdone">1.1</span> This specification covers melt processible molding and extrusion materials of EFEP-fluoropolymer. The EFEP resin is a copolymer of ethylene, tetrafluoroethylene, and hexafluoropropylene.</p></div> <div class="SectionLevel2"> <p class="subsec1 cdone2"><span class="Head3 cdone">1.2</span> This specification does not cover blended materials and does not cover recycled materials.</p></div> <div class="SectionLevel2"> <p class="subsec1 cdone2"><span class="Head3 cdone">1.3</span> The values stated in SI units as detailed in <span class="Body-link1 cdone">IEEE/ASTM SI-10</span> are to be regarded as the standard. The values given in parentheses are for information only.</p></div> <div class="SectionLevel2"> <p class="caveat cdone2"><span class="Head3 cdone">1.4</span> <i><span style="font-style:normal; font-weight:normal;" class="overriddenformat">The following safety hazards caveat pertains only to the test method portion, Section <span class="Body-link1 cdone">11</span>, of this specification.</span> 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.</i></p></div><div style="text-align:left;" class="NoteLevel1"> <p><span class="note cdone" style="text-transform: uppercase;">Note 1:</span> <span class="note cdone">Although this specification and ISO 20568-1 and ISO 20568-2 differ in approach or detail, data obtained using either are technically equivalent.</span></p></div> <div class="SectionLevel2"> <p class="WTOcaveat cdone2"><span class="Head3 cdone">1.5</span> <i>This international standard was developed in accordance with internationally recognized principles on standardization est...
2023-07-18 02:24:02浏览：27
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Kynar~氟聚合物在聚烯烃薄膜加工中的应用——提高产量,减少停机时间
氟聚合物是一种用于聚烯烃熔融挤出,特别是薄膜吹塑应用的有效加工助剂。本文介绍了氟聚合物家族中特有的氟聚合物系列产品PVDF以及PVDF/HFP共聚物,作为加工助剂用在薄膜挤出及其它应用上的优点及高效性能。...
2020-08-11 22:29:03浏览：75
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氟烯烃共聚合的研究进展
概述了氟烯烃共聚物树脂的发展,总结了氟烯烃与其他单体共聚合的相关研究.大多数情况下,氟烯烃单体的共聚反应得到的是随机共聚物.虽然聚合反应涉及的含氟单体和共聚单体种类很多,但最终聚合物按其性能和应用主要包括热塑性体、弹性体和热塑性弹性体3类.通过筛选一些特定功能性的单体参与聚合反应,可以使得含氟聚合物的某些性能如溶解性、交联固化性、附着力等得到补偿.此外,文中列出了一些氟烯烃单体的Q-e参数,并从理论上讨论了共聚物的结构;简述了吸电子氟烯烃单体与供电子全质子单体间的交替共聚行为,并列举了具体实例....
2020-03-23 17:40:10浏览：1430
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