某型导弹弹体大型模胎的材料结构历经硬木、铸铝、环氧塑料及铸铝填敷环氧塑料四次改革。在铸铝模胎上分区段填敷环氧塑料较之浇注法有更多的优越性。填敷法操作方便、节省原材料、不易发生暴聚且可避免因铸铝与塑料层的收缩率不一致所致弊病,所得模胎变形量小,刻线清析、耐磨,塑料层硬度高、耐冲击,确是一种较为理想的模胎材料结构。 The material structure of a large-scale model of a missile missile body undergoes four reforms of hardwood, cast aluminum, epoxy plastic and cast aluminum filled epoxy plastic. Epoxy plastic mold in the sub-section of the plastic than the casting method has more advantages. Filling method is easy to operate, saving raw materials, not easy to happen violent gather and avoid the shortcomings caused by inconsistent shrinkage of cast aluminum and plastic layer, the resulting mold deformation is small, engraved line analysis, wear-resistant plastic layer hardness, Impact resistance, is indeed a more ideal mold material structure.