Test Background
Rigid foam plastics refer to foam plastics that have no flexibility, high compression hardness, can deform when the stress reaches a certain value, and cannot return to their original shape after the stress is relieved. They can be used as thermal insulation materials, sandwich materials, packaging materials, sound insulation and earthquake-proof materials, building materials, etc. The rigid foam flexural strength test can determine the flexural strength and apparent flexural modulus of rigid foam.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various rigid foam plastics and provides professional bending strength testing services for rigid foam plastics.
Scope of tests
Rigid foam plastics mainly include: polystyrene foam, phenolic foam, polycarbonate foam, epoxy foam, rigid polyvinyl chloride, most polyolefin foams and some polyurethane foams.
Test method
The load indenter applies a load to the specimen supported on the two stands at a certain speed. The load should be applied perpendicular to the specimen at the center of the two points. Record the load and deformation, and calculate the bending strength and apparent bending elastic modulus.
Test standard:
GB/T 8812.2-2007 Rigid foam plastics - Determination of flexural properties - Part 2: Determination of flexural strength and apparent flexural modulus
ISO 1209-2:2004 Rigid foam plastics - Determination of flexural properties - Part 2: Determination of flexural strength and apparent flexural modulus of elasticity
GB/T 2918 Standard environment for conditioning and testing of plastic specimens
GB/T 6342 Foam plastics and rubber Determination of linear dimensions
