Method for preparing microsphere composite foam material

Abstract

The invention belonging to a foam material field relates to a preparation method for micro-sphere compound foam materials, which is characterized in comprising the following steps: 1) steps of batch mixing, bubble exhausting and molding: according to that a hollow micro-sphere is epoxide resin with weight of 0.1 to 6 wt%, firming agent is the epoxide resin with weight of 10-15wt%, plasticiser is the epoxide resin with weight of 0-20wt% and the diluent is the epoxide resin with weight of 0-20wt%, selection; stirring and mixing to get mixed materials, then a rolling and bubble exhausting treatment is carried out to the mixed materials by a rolling machine and then resin slurry mixed evenly is obtained, then the resin slurry is poured into a module to get molded; 2) earlier low temperature solidification step: the module containing the resin slurry is put into a container with low temperature and vacuum condition for solidification for 5 to 10 hours to get high viscosity resin slurry; 3)later solidification step: at first under the condition with solidification temperature of 20 DEG C to 50 DEG C, solidification is carried out for 2 to 12 hours, then temperature is increased to 100 to 120 DEG C, and solidification is carried out for 2 to 4 hours, then the micro-sphere compound foam materials are obtained. The method has a simple preparation procedure and the micro-sphere filled is evenly distributed.

Description

technical field [0001] The invention belongs to the field of foam materials, in particular to a method for preparing composite foam materials filled with microspheres and resins. Background technique [0002] Microsphere composite foam is a kind of foam material prepared by filling hollow microspheres and other hollow particles in polymer, mixing, molding and curing. Microsphere composite foam material has the characteristics of low density, high strength, especially superior compression performance, high modulus to weight ratio, excellent processing performance, superior heat and sound insulation performance and electrical performance, etc. It is developed in aerospace, aviation and ocean , construction and other fields have broad application prospects. [0003] Compared with chemical foaming, which is thermally expanded or decomposed by the foaming agent added in the matrix material, the microsphere composite foam material can avoid the disadvantage of difficult control o...

AI Technical Summary

Problems solved by technology

However, the previous preparation process of composite foam materials did not pay attention to the distribution of microspheres in the interior of the foam material, especially for precision foam workpieces, the distribution of microspheres in the foam material is a very important factor

Therefore, if the problems such as delamination and uneven distribution of microspheres in the preparation process of the above microsphere composite foam are not solved, it will greatly restrict the improvement of various performances and application prospects of the composite foam.

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