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ASTM D6076-2008 皮革缩小温度的标准试验方法

ASTM D6076-2008 皮革缩小温度的标准试验方法

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资料描述

【英文标准名称】: Standard Test Method for Shrinkage Temperature of Leather
【原文标准名称】: 皮革缩小温度的标准试验方法
【标准号】: ASTM D6076-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: D31.07
【标准类型】: (Test Method)
【标准水平】: ()
【中文主题词】:
【英文主题词】: degree of tannage; leather; shrinkage; shrinkage temperature; tannage; Degree of tannage; Leather; Shrinkage temperature; Tanning analysis/materials
【摘要】: 5.1 This test method is designed to determine the temperature at which a thoroughly wetted leather specimen experiences shrinkage. In this test method, shrinkage occurs as a result of hydrothermal denaturation of the collagen protein molecules which make up the fiber structure of the leather. The shrinkage temperature of leather is influenced by many different factors, most of which appear to affect the number and nature of crosslinking interactions between adjacent polypeptide chains of the collagen protein molecules. The value of the shrinkage temperature of leather is commonly used as an indicator of the type of tannage or the degree of tannage, or both, of that particular leather (especially for the more hydrothermally stable tannages such as chrome tannage).1.1 This test method covers the determination of the shrinkage temperature of all types of leather. The heating medium is water when the shrinkage temperature is at or below 98x00B0;C. The heating medium is a glycerine-water solution when the shrinkage temperature is above 98x00B0;C. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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.
【中国标准分类号】: Y45
【国际标准分类号】: 59_140_30
【页数】: 3P.;A4
【正文语种】: 英语

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