Abstract: Based on uniform design experiments, the effects of hollow glass beads (HGB), coupling agent, dibutyl phthalate (DBP), and curing agent on the uniaxial compressive strength were investigated. Through analysis the effect of the main 4 factors, HGB, on the compressive strength of the composite. It was found that the compressive strength of the composites decreased with increasing content of HGB, and first increased and then decreased with increasing content of coupling agent, first decreased and then increased with increasing content of DBP and curing agent. The optimal recipe of HGB, coupling agent, DBP, and curing agent was found to be 1.5, 0.1, 6.5, and 95 phr, respectively.

Key words: Uniform design, Epoxy resin, Composite materials, Hollow glass beads, Compressive strength