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  • NF T51-000-1972 - 中外标准 - - - 作废
  • NF EN ISO 1599-1999 - 中外标准 - - - 现行
  • GB/T 9349-1988 - 中外标准 - - - 作废
    均聚物热稳定性共聚物氯乙烯测量塑料树脂(天然)组合物变色法
  • ASTM F714-2006 - 中外标准 - - - 废止
  • ASTM D7136/D7136M-2005e1 - 中外标准 - - - 作废
  • ASTM F2737-2010 - 中外标准 - - - 作废

    1.1 This specification covers materials, structural design, physical dimensions and manufacturing requirements for monolithic or sectional corrugated high density polyethylene (HDPE) water quality units with volumes greater than or equal to 140 ft3 or 1,050 gal (4,000 L).

    1.2 The corrugated HDPE water quality units are placed as offline or inline treatment devices along storm drain pipe lines to remove total suspended solids (TSS), heavy metals and phosphorous. Typical sources of pollutants include construction activity, automotive transportation related wear and debris items, refuse, landscaping debris, agricultural activities, and other similar by-products.

    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 This specification covers horizontally laid corrugated HDPE water quality units as illustrated in Fig. 1.

    1.5 The following safety hazard caveat pertains only to the test methods portion, Section 9, of this specification. 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.

    起皱的HDPE管水质单位总悬浮固体可漂浮的暴雨处理预处理沉淀法律Corrugated HDPE pipewater quality unittotal suspended solidsfloatablesstormwater treatmentpretreatmentsettlingStoke&x2019s Law
  • JIS K7252-4-2008 - 中外标准 - - - 现行
    この規格は,温度60-180 0Cで,有機溶媒を溶離液として用いるサイズ排除クロマトグラフィー(以下"SEC”という。)による,高分子の平均分子量及び分子量分布の求め方について規定する。
  • ASTM D6778-2012 - 中外标准 - - - 作废
    缩醛共聚甲醛均聚甲醛缩醛三元共聚物分类分类系统线段型标注塑料材料聚甲醛聚氧化甲烯聚氧亚甲基共聚物聚甲醛均聚物聚甲醛三元共聚物再循环规范acetalacetal copolymeracetal homopolymeracetal terpolymerclassificationclassification systemline calloutL-P-392AMIL-P-46137A (MR)plastic materialspolyformaldehydepolyoxymethylenepolyoxymethylene copolymerpolyoxymethylene homopolymerpolyoxymethylene terpolymerPOMrecyclespecification
  • ASTM F2003-2002(2008) - 中外标准 - - - 现行

    This practice summarizes a method that may be used to accelerate the oxidation of UHMWPE components using elevated temperature and elevated oxygen pressure. Under real-time conditions, such as shelf aging and implantation, oxidative changes to UHMWPE after sterilization using high energy radiation may take months or years to produce changes that may result in deleterious mechanical performance. The method outlined in this practice permits the evaluation of oxidative stability in a relatively short period of time (for example, weeks).

    This practice may also be used to oxidize UHMWPE test specimens and joint replacement components prior to characterization of their physical, chemical, and mechanical properties. In particular, this practice may be used for accelerated aging of UHMWPE components prior to evaluation in a hip or knee joint wear simulator as outlined in Guide F 1714 (hip wear), Guide F 1715 (knee wear), ISO 14242 (hip wear), or ISO 14243 (knee wear), or combination thereof.

    1.1 It is the intent of this practice to permit an investigator to evaluate the oxidative stability of UHMWPE materials as a function of processing and sterilization method. This practice describes a laboratory procedure for accelerated aging of ultra-high molecular weight polyethylene (UHMWPE) specimens and components for total joint prostheses. The UHMWPE is aged at elevated temperature and at elevated oxygen pressure, to accelerate oxidation of the material and thereby allow for the evaluation of its long-term chemical and mechanical stability.

    1.2 Although the accelerated-aging method described by this practice will permit an investigator to compare the oxidative stability of different UHMWPE materials, it is recognized that this method may not precisely simulate the degradative mechanisms for an implant during real-time shelf aging and implantation.

    1.3 The accelerated aging method specified herein has been validated based on oxidation levels exhibited by certain shelf-aged UHMWPE components packaged in air and sterilized with gamma radiation. The method has not been shown to be representative of shelf aging when the UHMWPE is packaged in an environment other than air. For example, this practice has not been directly correlated with the shelf life of components that have been sealed in a low-oxygen package, such as nitrogen. This practice is not intended to simulate any change that may occur in UHMWPE following implantation.

    1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are for information only and are not considered standard.

    1.5 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.

    agingoxidationpreconditioningstabilityUHMWPEUHMW PEultra-high molecular weight polyethyleneAccelerated aging/testing--surgical devices/applicationsPolyethylene (PE) surgical implant applicationsUHMWPE (ultra-high molecular weight polyethylene)
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