| 摘要 |
A porous irrigation pipe manufactured by extrusion of a composition comprising vulcanized rubber particles and a thermoplastic binder. The composition is processed under heat and pressure and in the absence of moisture or other volatiles. The total volume of the thermoplastic binder in the composition after processing is lower than the matrix volume between the rubber particles in the composition. After extrusion the composition is permitted to expand in free space allowing the deformed rubber particles to regain their original shape and in so doing shear the thin thermoplastic layers between particles to form a network of pores and interconnected channels. |
