5 results about "Surface spreading" patented technology

To provide a polymer useful as a surface leveling agent, a method for producing the same, and an article comprising the same.SOLUTION: Disclosed herein is a copolymer comprising first polymerized units of formula (1) [R1 is H or a C1-C6 alkyl group and R2 is a C3-C20 alkyl group that optionally includes one or more of -O-, -S-, -N-, -C(O)-, -C(O)O-, -N-C(O)-, and -C(O)-NR-] and second polymerized units of formula (2) [R3 is a substituted or unsubstituted C1-C6 alkyl group that optionally includes one or more of -O-, -N-, -S-, -C(O)-, and -C(O)O-, wherein the first polymerized units and the second polymerized units are chemically different, and the copolymer is free of fluorine.SELECTED DRAWING: None

The utility model provides a slope material spreading device. The slope material spreading device comprises a main body and a material spreading device, wherein the main body is driven by a winch to move along a slope; the material spreading and conveying assembly comprises a supporting shaft located on the side, close to the slope face, of the main body, the supporting shaft is sleeved with two spiral conveying sleeves, and the spiral conveying sleeves are rotationally connected with the supporting shaft; each spiral conveying sleeve is provided with a spiral blade extending in the axial direction of the supporting shaft, and the rotating directions of the two spiral conveying sleeves are opposite. And the trowelling vertical plate is arranged below the material spreading and conveying assembly and is connected with the main body. According to the slope spreading device provided by the invention, the two spiral conveying sleeves with opposite rotating directions can automatically and uniformly spread slurry stacked in the middle of the supporting shaft to the two ends, so that the labor intensity is reduced, and the pouring efficiency is improved. Meanwhile, the two spiral conveying sleeves are supported through one supporting shaft at the same time, the coaxiality of the spiral blades on the two spiral conveying sleeves can be further guaranteed, and it is guaranteed that materials are evenly spread on the slope face.

To increase the grinding speed of a surface by a cavitation processing method.SOLUTION: In the cavitation surface treatment method, an abrasive material 7 is suspended in a treatment liquid 5, a workpiece 3 and a flat spray nozzle 12 are immersed in the treatment liquid 5, the flat spray nozzle 12 sprays a cavitation jet 32 spreading on a plane toward the surface of the workpiece 3 while rotating around a spray axis 1, the surface of the workpiece 3 is smoothed, and compressive residual stress is given to the surface of the workpiece 3.SELECTED DRAWING: Figure 1

A reel compartment cover for preventing trapping of an object includes a plurality of offset, vertically interconnected surfaces with a center opening positioned above and below each other in a larger circular or semicircular opening; wherein the interconnected surfaces spread apart when the object is inserted through the center opening; wherein the interconnected surfaces are constructed from a flexible material that returns to original shape when the object passes through or is removed from the center opening; and wherein the opening formed by the interconnected surfaces is as large as the diameter of the circular or semicircular opening.