46results about How to "Improve shaping ability" patented technology

The invention discloses a regular-hexagon universal movable bottom plate system in a sedimentary simulation experiment device. The regular-hexagon universal movable bottom plate system in the sedimentary simulation experiment device comprises a movable bottom plate, wherein the movable bottom plate comprises a plurality of regular-hexagon bottom plates which are connected mutually, a hemispherical nut is arranged in the center of each regular-hexagon bottom plate, a bottom plate support structure is connected at the lower end of the hemispherical nut, and a separated electric hydraulic jack is connected at the lower end of the bottom of the bottom plate support structure. The regular-hexagon bottom plates disclosed by the invention and link devices of the regular-hexagon bottom plates are high in flexibility. Each regular-hexagon bottom plate can tilt by taking six sides of each regular-hexagon bottom plate as an axis, and the tilt direction of each regular-hexagon bottom plate is more than the tilt directions of a square and a rectangle; a spherical connecting rod penetrates through a hemispherical nut support bottom plate, and the supporting way allows the bottom plates to tilt in all directions. Two opposite sides between every two bottom plates are linked by two springs and one iron chain, the iron chain is slightly longer than the springs, the distances of the bottom plates are allowed to be widened while forming, furthermore, the iron chain can constrain the stretched lengths of the springs to prevent the springs from being damaged by over-stretching; the two springs allow twisting between the bottom plates by taking the iron chain as the axis.

The invention provides PVDC copolymer emulsion. The copolymer emulsion is formed by mixture monomers and accessory ingredients through copolymerizing. The mixture monomer contains 65 percent to 82 percent of vinylidene chloride, 15 percent to 35 percent of unsaturated fatty acid ester monomer, 3 percent to 8 percent of unsaturated fatty acid and 0.001 percent to 2 percent of perfluoro-unsaturatedfatty acid C3 to C6 ester monomer. The copolymer emulsion also contains the three-layer structural particles, the core-shell particles of which are all VDC / MMA / BA: the core layer is 20 percent to 84 percent of VDC and 16 percent and 80 percent of comonomer; the middle layer is 80 percent of VDC and 18 percent and 20 percent of comonomer; the outmost layer is 30 percent to 80 percent of VDC, 20 percent and 60 percent of comonomer and trace amount of C3 to C6 perfluoroester. The ratio of each layer is 5 to 30:25 to 70:15 to 30. The invention also provides a preparation method of the copolymer emulsion and an application of the copolymer emulsion in fields of fiberglass mesh fabrics, sponges, paper packaging materials, textiles and the like which use impregnating technical coating.