Compression set testing measures the ability of rubber to return to its original thickness after prolonged compressive stresses at a given temperature and deflection. As a rubber material is compressed over time, it loses its ability to return to its original thickness.

The compression set (ASTM D395) of a material is the permanent deformation remaining after compressing it. [1] In specific methods, temperatures and percent compression are specified. The term is normally applied to soft materials such as elastomers and foams. Compression is normally measured in two ways: compression set A and compression set B ...

压缩永久变形是 橡胶制品 的重要指标之一，外文名是EN Compression Set。 硫化橡胶 压缩 永久变形 的大小，涉及到硫化 橡胶 的弹性与恢复，有时候人们往往以为橡胶的弹性好，其恢复就快，永久变形就小，这种理解是不够的，永久变形的大小主要是受橡胶 恢复能力 所支配，影响恢复能力的因素有分子之间的 作用力 （粘性）、 网络结构 的变化或破坏、分子间的位移等。 当橡胶的变形是由于分子链的伸张引起的，它的恢复（或者永久变形的大小）主要由橡胶的弹性所决 …

2014年5月7日 · Testing for Compression Set. Several test methods exist for quantifying the compression set of elastomers. Two common test methods are ASTM D-395 and ASTM D-1414. Both test methods use the same test apparatus, but different test specimens. A constant deflection test apparatus is shown below. The test procedure is as follows: 1.)

2018年12月12日 · What is the Standard Test Methods for Rubber Property – Compression Set? The test methods in ASTM D395-18 cover the testing of rubber meant to be used in applications in which the rubber will be exposed to compressive stresses in air or liquid media. These tests are especially useful for rubber that will be used in vibration dampers, seals ...

Compression set testing is used to determine the ability of elastomeric materials to maintain elastic properties after prolonged compressive stress. The test measures the somewhat permanent deformation of the specimen after it has been exposed to …

Compression set is the amount of permanent deformation that occurs when a material is compressed to a specific deformation, for a specified time, at a specific temperature. ASTM D395 Standard Test Methods for Rubber Property—Compression Set is the test method used and it calls for the material to be 25% deformed (compressed) for a given period.

2018年9月18日 · 4.1 Compression set tests are intended to measure the ability of rubber compounds to retain elastic properties after prolonged action of compressive stresses. The actual stressing service may involve the maintenance of a definite deflection, the constant application of a known force, or the rapidly repeated deformation and recovery resulting ...

ASTM D395B defines compression set testing as a critical method to evaluate material durability and resistance to deformation under specified compressive stress over time. This testing is indispensable in sectors where materials must retain their form and function despite enduring sustained compression.

2024年8月8日 · Compression set is measured using specific test methods based on the type of material. When reviewing a TDS and comparing different elastomers, it is important to know the following five conditions: ASTM D1056 calculates c-set based on the compressed height, and ASTM D3574 calculates it based on the uncompressed height.