ISO 7743-2008 硫化橡胶或热塑性橡胶.压缩应力-应变性能的测定.pdf

标准号：ISO 7743-2008
实施状态：作废
中文名称：硫化橡胶或热塑性橡胶.压缩应力-应变性能的测定
英文名称：Rubber, vulcanized or thermoplastic - Determination of compression stress-strain properties
发布日期：2008-05
被替代标准：ISO 7743-2011
代替标准：ISO 7743-2004;ISO/DIS 7743-2007
采用标准：BS ISO 7743-2008,IDT;GB/T 7757-2009,IDT;NF T46-062-2008,IDT;JIS K 6254-2010,MOD
起草单位：ISO/TC 45
标准简介：This International Standard specifies methods for the determination of the compression stress-strain
properties of vulcanized or thermoplastic rubber using a standard test piece, a product or a part of a product.
Three methods are given:
⎯ using a standard test piece with the metal plates lubricated (method A);
⎯ using a standard test piece with the metal plates bonded to the test piece (method B);
⎯ using a product or a part of a product with the metal plates lubricated (method C).
The three methods do not give the same results. With lubricated test pieces, the results are dependent only
on the modulus of the rubber and are independent of the test piece shape, provided that complete slip
conditions are achieved. Effective lubrication is sometimes difficult to achieve, however, and it is prudent to
inspect the variance in the test results from replicate test pieces for indications of erratic slip conditions. With
bonded test pieces, the results are dependent on both the modulus of the rubber and the test piece shape.
The dependence on test piece shape is strong and consequently the results will be markedly different from
those obtained with lubricated test pieces. For products, the result is dependent on the shape, but as tests on
products are mainly comparative this is acceptable.
NOTE For well-specified product shapes, such as O-rings, the result may be correlated to the hardness value.
Provision is made for the use of test pieces of different size and/or shape from the specified test piece, but
extrapolation of the results obtained to other sizes and shapes may not be possible.
Guidance on the effect of size and shape of test piece and of bonding or lubricating is given in Annex A.
The methods are not suitable for materials that exhibit high set.
The necessary calibration schedule for this type of measurement is included in Annex B.
文件格式：PDF
文件大小：196.66KB
文件页数：22
（以上信息更新时间为：2019-11-22）



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