Test Background
Compression permanent deformation refers to the difference between the initial thickness of the sample and the final thickness of the sample after compression at a specified time and temperature and after a specified recovery time. The size of the difference is related to the initial thickness. The purpose of the compression permanent deformation test of polymer porous elastic materials is to determine the compression permanent deformation performance of sponge-like materials.
The Zhongke Testing and Reliability Experiment Center has environmental testing capabilities for various polymer poroelastic materials and provides professional compression permanent deformation testing services for polymer poroelastic materials.
Scope of tests
is suitable for latex and polyurethane foam materials with a thickness greater than 2 mm.
Test method
1. At the specified time and temperature, maintain constant deformation of the sample, and record the change in thickness of the sample after pressure relief.
2. Compressor: It consists of two flat plates that are larger than the sample. The flat plates should have distance adjustment and clamping functions. The two plates are kept parallel to each other, and the distance between the two plates can be adjusted to the thickness required for deformation. When testing thin specimens, a glass plate should be used with a thickness of 1~1.5 mm and a side length of 50~55 mm.
3. The instrument used to measure the size of the specimen should meet the requirements.
4. The temperature controlled by the thermostat should be accurate to ±1°C.
Test standard:
GB/T 10653-2001 Polymer poroelastic materials - Determination of compression permanent deformation
GB/T 14274-2003 Polymer poroelastic materials Accelerated aging test
GB/T 10808-2006 Polymer porous elastic materials - Determination of tear strength
GB/T 10655-2003 Polymer porous elastic materials - Determination of air permeability
GB/T 10654-2001 Polymer poroelastic materials - Determination of tensile strength and elongation at break
ISO 1856 Polymer poroelastic materials Determination of compression permanent deformation
DIN EN ISO 1856-2020 Flexible porous polymer materials Determination of compression set
BS EN ISO 1856-2001 Flexible foam polymeric materials - Determination of compression set
EN ISO 1856-2000 Flexible foamed polymeric materials - Determination of compression set
KS M ISO 1856-2007 Flexible porous polymeric materials Determination of compression set
