2results about How to "Improve interlayer strength" patented technology

The utility model relates to the field of composite fabrics, in particular to a sandwich fabric with high strength, which sequentially comprises a surface layer, a supporting layer and a bottom layer from top to bottom, the supporting layer comprises conical cavities and three-dimensional net-shaped fillers, the conical cavities are formed by three-dimensional twisting and weaving, the conical cavities are uniformly distributed on one surface of the supporting layer, and the three-dimensional net-shaped fillers are filled with the three-dimensional net-shaped fillers. And free yarns are reserved on the two surfaces of the supporting layer. The surface of the small opening supporting layer of the conical cavity is designed to be horizontal, after glue spraying, printing or roller coating is conducted, the conical structure can form a siphoning effect, fluid substances at the interface position are siphoned into the cavity from the small opening position, combination at the interface position is more stable after solidification, and the service life of the interface is prolonged. And the free yarns can be sealed in the solidified fluid substance, so that the strength of the fabric is further improved.

The application discloses a preparation method of a multilayer composite crosslinking ceramic flow-casting green tape, which comprises the following steps: inputting slurry into multiple interval-mounted material boxes of a flow-casting machine, making the carrier tape pass through the material boxes and making the slurry in the material boxes be stacked on the carrier tape layer by layer to be flow-cast into a multilayer composite crosslinking flow-casting green tape; the slurry comprises silicon nitride ceramic powder, a sintering aid, a solvent, a binder, a dispersing agent, a plasticizer and a crosslinking agent; the plasticizer is at least one of cashew phenol Mannich tiglic acid ester, dibutyl phthalate, dimethyl phthalate and polyethylene glycol, and the dispersing agent is at least one of fish oil, castor oil and polyvinylpyrrolidone. The obtained green tape is uniform, smooth and flat, free of cracks, wrinkles and bubbles, has good toughness and high strength, is not easy to deform, and has adjustable thickness, and the problem that a crosslinking system ceramic green tape is difficult to flow thick is solved.