By taking the method of grinding pressure molding to make preparation of the microcellular foam NR composites

and based on compatibility technology

vulcanizing and mechanism of foaming match

the effect law on the foam quality of NR and mechanical properties that brought by different elastomers has been analyzed. The results show that the addition of elastomer and LDPE has made a significant change in the cell structure of themicrocellular foam NR composites. The foam composites formed by adding EVA in the natural rubber has an ideal foam quality

with a cell diameter minimum to 114.83μm and the cell density reaches the maximum of 4. 17 × 10

6

cm

-3

; To the mechanical properties

The foam composites formed by adding BR in the natural rubber has a bettercomprehensive performance. It' s Shaw hardness is 15

the compression set is 3. 56%

and the impact resilience is 55%. From the perspective of the foam quality and mechanical property

adding EVA in the natural rubber is suitable for the development of the foam NR products.