A lightweight material based on PVC/TPU blend was studied

which was prepared by incorporation of DCP as cross-linking agent

AC forming agent

hollow glass microsphere and other accessory ingredients via melt blending

and foam materials were prepared via molding method.The effects of the composition ratio of PVC/TPU

DCP content and hollow glass microsphere content on the properties of PVC/TPU lightweight materials were investigated by the density

impact

tensile and flexible test.FTIR analysis showed that groups of materials were changed in modified material.Bubble quality

size and the topology were studied by SEM.Polyester TPU modified the impact and flexible strength

the lowest density was 0.30 g/cm3

as TPU content was 10 phr.With addition of DCP content the lightweight material density declined first and then increased.The results observed by FTIR and gel content test indicated that cross-linking network formed in PVC/TPU lightweight materials.Addition of hollow glass microspheres made the density and mechanical properties of PVC/TPU light material improved obviously

but density was still less than 1.0 g/cm3. SEM showed that the bubbles were intact

hardly be broken and bubble walls were thickened with addition of DCP.Hollow glass microspheres were distributed in the bubble wall

which could cause foam and support more strength.