【国外标准】 Test Method for Shrinkage Temperature of Wet Blue and Wet White
本网站 发布时间:
2024-02-28
开通会员免费在线看70000余条国内标准,赠送文本下载次数,单本最低仅合13.3元!还可享标准出版进度查询、定制跟踪推送、标准查新等超多特权!  
查看详情>>
标准简介
适用范围:
5.1 This test method is designed to determine the temperature at which the Wet Blue or Wet White 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 Wet Blue or Wet White. The shrinkage temperature of Wet Blue or Wet White 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 Wet Blue or Wet White is commonly used as an indicator of the type of tannage or the degree of tannage, or both, of that particular Wet Blue or Wet White (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 Wet Blue and Wet White. The heating medium is water when the shrinkage temperature is at or below 98 °C. The heating medium is a glycerine-water solution when the shrinkage temperature is above 98 °C.1.2 The values stated in SI units are to be regarded as the standard. The values 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
标准号:
ASTM D8042-18(2023)
标准名称:
Test Method for Shrinkage Temperature of Wet Blue and Wet White
英文名称:
Test Method for Shrinkage Temperature of Wet Blue and Wet White标准状态:
Active-
发布日期:
-
实施日期:
出版语种:
- 推荐标准
- 国家标准计划
- BS ISO 13265:2024 - TC . Joints for buried non-pressure applications. Test method for the long-term sealing performance
- BS ISO 11452-3:2024 Road vehicles. Component test methods for electrical disturbances from narrowband radiated
- BS EN ISO 9073-18:2023 Nonwovens. Test methods
- BS IEC 62896:2024 - TC AC and 1 500 V DC. Definitions, test methods and acceptance criteria
- BS EN 17888-1:2024 Thermal performance of buildings. In situ testing of building test structures
- BS EN IEC 61189-2-805:2024 Test methods for electrical materials, printed boards and other interconnection structures
- BS EN 61427-2:2015+A1:2024 of test
- BS EN 17888-2:2024 Thermal performance of buildings. In situ testing of building test structures
- BS EN 16035:2023 Hardware performance sheet (HPS). Identification and summary of test evidence to facilitate
- BS ISO 13265:2024 non-pressure applications. Test method for the long-term sealing performance of joints
- BS EN ISO 12224-1:2024 - TC Tracked Changes. Solder wire, solid and flux-cored. Specification and test methods
- 24/30493776 DC BS EN IEC 62475 High-current test techniques - Definitions and requirements for test currents
- 24/30477435 DC of a micromechanical single-fibre pull-out test
- BS EN ISO 18187:2024 - TC Tracked Changes. Soil quality. Contact test for solid samples using the dehydrogenase activity
- BS EN ISO 12224-2:2024 - TC Tracked Changes. Solder wire, solid and flux-cored. Specification and test methods