发明授权
US4250136A Method of forming a composite structure 失效
形成复合结构的方法

Method of forming a composite structure
摘要:
The method of making a reinforced composite structure utilizing an initially amorphous foam core element containing a high volume of macro and micro spheres mixed in a thermosetting resin with said core element being contained between resin-impregnated, fibrous reinforcing layers such that the resin of the core element remains in the core element when the composite is molded under heat and pressure.
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