ISO 1992-3 AMD 1-1980 商业用冷藏柜试验方法第3部分:温度试验修改1

上一篇: ANSI/AWS A5.13-1980 堆焊焊条和电极规范
下一篇: ANSI B93.51M-1980 气压传动快速耦合试验条件和程序

【英文标准名称】:Glassinbuilding-Basicsodalimesilicateglassproducts-Part5:patternedglass.
【原文标准名称】:建筑玻璃.基本钠钙硅酸玻璃产品.第5部分:压花玻璃
【标准号】:NFP78-106-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-12-01
【实施或试行日期】:2004-12-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:Q33
【国际标准分类号】:81_040_20
【页数】:11P;A4
【正文语种】:其他


Product Code:SAE AIR1387
Title:Designing With Elastomers for Use At Low Temperatures, Near Or Below Glass Transition
Issuing Committee:Ams Ce Elastomers Committee
Scope:To ensure success in design of elastomeric parts for use at low temperature, the design engineer must understand the peculiar properties of rubber materials at these temperatures.There are no static applications of rubber. The Gaussian theory of rubber elasticity demonstrates that the elastic characteristic of rubber is due to approximately 15% internal energy and the balance, 85%, is entropy change. In other words, when an elastomer is deformed, the elastomer chain network is forced to rearrange its configuration thereby storing energy through entropy change. Thermodynamically, this means that rubber elasticity is time and temperature dependent (Reference 25).The purpose of this report is to provide guidance on low temperature properties of rubber with the terminology, test methods, and mathematical models applicable to rubber, and to present some practical experience. In this way, it is hoped that mistakes can be avoided, particularly in selection of rubber materials, enabling the design engineer to weigh low-temperature material properties together with the many other factors involved in the design process.