In automotive composite applications, why is PET sandwich panel more common than PU?
Vehicle interiors must meet stringent VOC (Volatile Organic Compound)[…]
Why are XPS foams prone to thermal warping with metal facings, and how to handle it?
XPS has a coefficient of thermal expansion of approximately[…]
Why is the chemical compatibility of PET foam with epoxy adhesives better than that of PU foam?
PET foam surfaces contain polar ester groups that can[…]
How can the flexural stiffness of a sandwich panel be estimated from the core’s shear modulus?
The flexural stiffness D of a sandwich panel =[…]
XPS extruded board has a closed-cell rate of over 98%, so why is it rarely used in load-bearing sandwich panel structures?
XPS’s high closed-cell rate ensures very low water absorption[…]
How does the chemical structure of PVC foam give it good impact resistance?
PVC foam is based on polyvinyl chloride, forming a[…]
Why is PET foam core suitable for sandwich panels with high mechanical requirements? What are the key differences from PVC foam?
PET foam is a thermoplastic polyester foam with extremely[…]
Why is PU foam core the first choice for cold storage sandwich panels? How low can its thermal conductivity actually reach?
PU foam has a closed-cell ratio exceeding 95%, with[…]
What are the typical density ranges of XPS, PET, PU, and PVC foam cores, and how to choose based on density?
XPS density is typically 28–45 kg/m³, offering high compressive[…]
ONEBOND is a sandwich panels provider integrating production and sales, research and development.