Polyurethane polishing wheel and preparation method thereof

Abstract

The invention provides a polyurethane polishing wheel and a preparation method thereof. The polyurethane polishing wheel comprises a plurality of nylon fiber non-woven fabrics coated with wear-resistant slurry, the wear-resistant slurry comprises the following components in parts by weight, 100 parts of end-capped polyurethane prepolymer, 10-40 parts of chain extender, 5-15 parts of a solvent, 0.01-0.5 parts of a foaming agent, 0.01-0.5 parts of a catalyst, 0.1-0.8 parts of an antioxidant, 100-500 parts of an abrasive, 2-20 parts of a lubricant and 0.5-5 parts of toner; and the end-capped polyurethane prepolymer is selected from one or two of a polyester type end-capped polyurethane prepolymer and a polyester type end-capped polyurethane prepolymer. The polyurethane polishing wheel disclosed is compared with the polishing wheel in the same type in the market, the durability is improved by about 1 time, and the surface roughness value is reduced by about 50%.

Description

technical field [0001] The invention relates to a polishing wheel and a preparation method thereof, in particular to a polyurethane polishing wheel and a preparation method thereof. Background technique [0002] In recent years, polishing and grinding consumables made of polyurethane have been widely used at home and abroad. Polishing products made of polyurethane have good elasticity and toughness, and ideal cutting efficiency. Compared with other polishing materials made of epoxy resin, polyamide resin, polyester resin, and phenolic resin Grinding wheel products should be durable. [0003] At present, there are two main forms of polishing wheel products made of polyurethane materials: [0004] 1. The foaming grinding and polishing wheel made of foaming material is added with solvent, abrasive, catalyst, foaming agent, foam stabilizer, cooling agent, etc. The product has foaming micropores, good elasticity and toughness, and good polishing finish [0005] 2. Polyurethane ...

AI Technical Summary

Problems solved by technology

[0006] Polishing wheel products made of polyurethane foam, because the foaming time and production operation time are not easy to control, and the foaming gel time is difficult to balance, resulting in impregnated fiber reinforcement is difficult to achieve, easily affected by ambient temperature and humidity, production structure Uneven, so that the strength of the produced product is insufficient, and it is easy to burst

The polishing wheel products made of polyurethane elastomer, although nylon fibers are added to fix and enhance the structural strength of the product, the polyurethane resin rubber material lacks foaming structure, and when the polishing wheel product is polished and polished metal and other materials, it is easy to make the product and the polishing wheel The workpiece is heated, causing resin carbonization to remain on the surface of the workpiece, which affects the effect of using and polishing the workpiece

[0007] In addition, in the production and preparation, the pure polyurethane foam wheel has no fiber reinforcement, which is easy to cause uneven structure, resulting in insufficient strength, and needs mold heating and pressure curing to set the shape, while the production cycle of non-woven polishing wheel is long, polyurethane foam Unsuitable, difficult to make multi-layer products