2results about How to "Composite tight" patented technology

The application relates to the technical field of composite materials, and discloses a preparation method of a multilayer composite core body, which comprises the following steps: pretreatment, spraying treatment, core composite material preparation, compounding and curing forming; the surface of a fiber base layer is chemically modified through functional pretreatment, the wettability and reactivity of the fiber surface are improved, the different fiber layers with different functional characteristics can be more closely and stably combined, and therefore the integrity, reliability and durability of the multilayer composite core body structure are enhanced; through spraying treatment, functional particles are uniformly loaded on the surface of the fiber base layer in the form of a stable dispersion liquid; the functional particles have good compatibility and bonding force with the fiber base and the interlayer composite material after being treated and surface-modified in a specific manner, the core body is endowed with specific surface functions, the interface bonding between the fiber and the base is enhanced, and the functionality, uniformity and structural strength of the core body are improved.

This invention provides a stainless steel composite plate and its preparation method, belonging to the field of metallurgical process technology. The stainless steel composite plate includes a substrate and a composite material, which are stacked. A plurality of air guide grooves are provided on the side of the substrate facing the composite material. These air guide grooves are areas on the substrate for bonding with the composite material and extend along the length of the substrate. The air guide grooves converge at one end, and a vertical hole is provided on the substrate at the converging end of the air guide grooves, communicating with the air guide grooves through the vertical hole. A horizontal hole is provided on the end face of the substrate, communicating with the vertical hole, and the exposed end of the horizontal hole is adapted to communicate with a vacuum extraction device. By providing air guide grooves on the bonding surface of the substrate for bonding with the composite material, the stainless steel composite plate of this invention can improve the vacuum extraction effect and ensure the vacuum degree between the two plates during vacuum extraction.