However, the composite foam compared with the traditional foam larger strength, and the process is good, easy to control. Hollow microspheres for the preparation of composite foams are generally polymer hollow microspheres and glass hollow microspheres (HGM). Polymer hollow microspheres have poor mechanical properties and are reported to be unable to withstand hydrostatic pressures of more than 2.5 MPa, while glass hollow microspheres can withstand up to 12 Pa of hydrostatic pressure. At present, composite foam is widely used in various industrial products.
Floating body material is an important part of marine resource development technology. In order to improve the depth of the body with sufficient net buoyancy, deep submersible.
The pressure resistance, structural stability.
