Polishing film and method for making same

Abstract

The invention discloses a polishing film and the preparation method, which adopts the ultrafine micro mist as the grinding material and prepares in flow-casting coating method, namely the powdered or granular resin is dissolved into the organic solvent and then added in functional additive to make the resin adhesive, then the abrasive of surface-modified ultrafine micro mist is added into the resin adhesive and the spread coating liquid can be obtained after fully mixing, finally the paint is painted on the surface of soft base in flow-casting coating method and the polishing film can be obtained after drying and curing. The preparation method of the polishing film has the advantages of small equipment investment, simple operation, high productivity and automation level, steady craft, even film performance and low manufacturing cost. The polishing film can adjust the craft parameters of the flow-casting craft conveniently according to the different quality requirement and standards of the products, and can achieve production in multi-specification and small lot production and overcomes the problems that the rapid transformation of the product specification is difficult due to the limit of the equipment structure in 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 high requirements. If there are bumps, scratches or foreign objects attached to the surface, the designed accuracy and performance will not be guaranteed. Therefore, the final surface finish is a critical step that affects the performance of precision devices. For the surface polishing of these materials, free abrasive grinding and polishing are generally 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