A kind of polishing film and preparation method thereof

Abstract

The invention discloses a polishing film and a preparation method thereof. The ultrafine powder is used as an abrasive material and prepared by a casting coating method, that is, powdery or granular resin is dissolved in an organic solvent and functional additives are added. Then add the surface-modified ultrafine powder abrasive into the resin glue, mix thoroughly to make a coating solution, and then apply the coating evenly on the surface of the flexible substrate material by casting coating method, Drying, solidification, that is. The equipment of the present invention has the advantages of small investment, simple operation, high production efficiency and automation level, stable process, uniform film performance, low manufacturing cost, and can conveniently adjust the casting process according to the different quality requirements and standards of each user for the product. The parameters are adjusted to achieve multi-specification and small-batch production, which overcomes the difficulty of rapid change of product specifications caused by the limitation of equipment structure in the roller coating method.

Description

technical field [0001] The invention relates to the field of grinding and polishing, in particular to a polishing film with uniform performance and low manufacturing cost and a preparation method thereof. Background technique [0002] In recent years, with the development of information technology and optical technology, hard and brittle materials, such as silicon wafers, optical glass, magnetic disks, magnetic tapes, magnetic heads, optical fiber connectors, optical fiber couplers, optical fiber terminators, single The quality and precision of crystalline silicon wafers and other precision hard devices have put forward very high requirements. If the surface has unevenness, scratches, or foreign matter attached, the accuracy and performance of the design will not be guaranteed. Therefore, final surface polishing is a key step in determining the performance of precision devices. For the surface polishing of these materials, free abrasive grinding and polishing is commonly u...

AI Technical Summary

Problems solved by technology

The main materials of the base belt are: polyester, polyvinyl chloride, nylon, polyethylene, polypropylene and other plastic films; the resin includes one of polyester, polyvinyl chloride, polyurethane, nitrated cotton, polyacrylate, and epoxy resin Or a mixture of two or more; abrasives are also called abrasives, mainly white corundum, silicon carbide, chromium oxide, iron oxide, silicon oxide, cerium oxide, diamond and other fine powders; the coating process is a roller coater or spray coating The paint is evenly coated on the surface of the film by the machine, as disclosed in the patent document CN 1207328C, and the polishing film is prepared by this process, which requires a large investment in plant and equipment. The roller speed and line speed are relatively high (50-200m / min), and the minimum feeding amount of abrasives at one time should not be less than 5kg. When the user needs a small batch of products with special quality requirements, due to the limitation of the machine structure, it is difficult to change quickly. process to meet user needs, or even if products that meet special quality requirements are prepared according to user needs, but because the quantity of products produced is far greater than the quantity ordered by users, there is a large backlog of inventory, which greatly increases product costs. , which weakens the competitiveness of the product