ASTM D1056 is the standard for the flexible porous sponge or rubber material expansion, the standard is clear for the test items and samples of porous sponge materials according to the standard requirements, we can clearly know what must be tested, such as aging, tensile, compression, bending, deformation etc..

First of all, the flexible porous sponge material or expansion rubber must be accelerated aging test standard, test time depends on the specific circumstances, the sample is treated before and after aging test project needs and decide, in addition to compression deformation test changes after high temperature aging, the test sample, the standard 28mm DIA. The thickness of about 12.5mm, the aging test temperature 70, time 168hrs, and the test before and after aging deformation and calculate the change rate. Low temperature bending test requires low temperature treatment time is five hours.

Secondly, the flexible porous sponge material or expansion test of mechanical properties of rubber, including compression deformation test (28mm DIA, minimum thickness of 6mm); setting the variable compression permanent deformation test specimen (28mm, DIA, the open cell foam material, thickness not less than 6mm, the closed cell foam material, thickness not less than 12.5mm, no more than 19.05mm, the thickness of the closed cell foam is not allowed to tear resistance test; superposition) (recommended sample size: 200 x 200mm); tensile strength / elongation (recommended sample size: 200 * 200mm).

Finally there is the oil bubble test (for foaming sponge), oil immersion test (applicable to closed cell foam) test, water absorption rate (for closed cell foam), density test (sample volume shape, not less than 16cm3), ozone resistance test, burning test. Please feel free to contact us for relevant testing and machine purchase requirements!