Process for forming thermoplastic elastomer/filler composite foam material

Abstract

The invention belongs to the field of composite materials and in particular relates to a process for forming a thermoplastic elastomer / filler composite foam material through a supercritical CO2 technology. The forming process comprises the following steps: adding a thermoplastic elastomer and a filler into an autoclave body, introducing CO2 to enable the pressure in the autoclave to be higher than 7.38Mpa and enable the temperature to be higher than 31 DEG C, permeating for a period of time and then relieving pressure; rapidly putting the prepared thermoplastic elastomer / filler composite material into foaming equipment, heating and foaming so as to prepare foam particles; and performing steam compression molding on the foam particles, thereby obtaining the thermoplastic elastomer / filler composite foam product. The product is excellent in performance, the filler is uniformly dispersed, and the problem that the filler in the traditional composite material product is poor in dispersion property is solved.

Description

technical field

[0001] The invention belongs to the field of composite materials, and in particular relates to a 2 Technology The molding process for preparing thermoplastic elastomer / filler composite foaming materials. Background technique

[0002] Blending thermoplastic elastomer materials with fillers can not only significantly improve the performance of thermoplastic elastomer materials, but also greatly reduce the cost of thermoplastic elastomer material development and development. But the premise is that the filler can be incorporated into the matrix to deagglomerate and evenly disperse during the process of mixing with the elastomer. However, due to the poor mutual affinity between the elastomer material and the filler, the dispersion of the filler using the traditional melt blending method is poor, and these filler particles are easy to agglomerate in the elastomer matrix, making the performance of mixing the two It cannot reach the level that is theoretically pos...

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