Abstract: Honeycomb sandwich structure is consisted of a thin panel and a thick honeycomb, it has the advantage of light weight, high strength, high stability and so on. It has been widely used in internal structures of aerospace, aviation, subway and passenger car. The study of the traditional honeycomb sandwich structure was mainly focused on the mechanic properties. With the development of the aerospace, a higher safe requirements was proposed forward by engineers. Based on the traditional processing technique, with the method of adding a certain proportion of auxiliaries, this paper introduces a new kind of material, which has the safe properties combined with anti-bacterial, mold proof, flame retardancy, low smoke and so on. The antibacterial and antimildew properties were investigated by antifungal and antibacterial experiments, flame retardancy was studied by combusting experiment, and the concentration of toxic gases after burning was studied by toxicity experiment. These experiments show that the materials have excellent safety performance, and excellent mechanical property, The aim of the work in this paper is to lay the foundation for our aerospace development.

Key words: material safety, performance, mechanical property, honeycomb sandwich structure