Silicon (Si) based high temperature coatings and base materials and methods of making those materials. More specifically, methods and materials having silicon, oxygen and carbon containing polymer derived ceramic liquids that form filled and unfiled coatings, including high temperature crack resistant coatings.

Silicon (Si) based high temperature coatings and base materials and methods of making those materials. More specifically, methods and materials having silicon, oxygen and carbon containing polymer derived ceramic liquids that form filled and unfiled coatings, including high temperature crack resistant coatings.

A method for preparing a flexible sol-gel polishing block, the method comprises: (1) adding a gel agent and a 20 μm diamond abrasive into deionized water, and stirring to even to obtain a first material; (2) adding carbon fiber into the first material obtained in the step 1, and mixing to even to obtain a second material; (3) injecting the second material obtained in the step 2 into a mold, and curing to obtain a cured gel; and (4) drying the cured gel to obtain the flexible sol-gel polishing block.

A method of manufacturing an abrasive member, in particular having the general shape of a disc such as a cutting or grinding disc, comprises arranging a reinforcing insert or reinforcing member into a mold between a layer of curable abrasive resin compound, in particular a layer of curable abrasive granulate, a backing member such that at least a section of the reinforcing insert or reinforcing member is in direct physical contact with the curable abrasive resin compound, the reinforcing insert or reinforcing member is at least partially covered by the backing member and at least a section of the backing member is in direct physical contact with the curable abrasive resin compound; bonding the reinforcing insert or reinforcing member and the backing member by curing the curable abrasive resin compound, wherein the cured abrasive resin compound forms an abrasive layer of the abrasive member.

A method of manufacturing an abrasive member, in particular having the general shape of a disc such as a cutting or grinding disc, comprises arranging a reinforcing insert or reinforcing member into a mold between a layer of curable abrasive resin compound, in particular a layer of curable abrasive granulate, a backing member such that at least a section of the reinforcing insert or reinforcing member is in direct physical contact with the curable abrasive resin compound, the reinforcing insert or reinforcing member is at least partially covered by the backing member and at least a section of the backing member is in direct physical contact with the curable abrasive resin compound; bonding the reinforcing insert or reinforcing member and the backing member by curing the curable abrasive resin compound, wherein the cured abrasive resin compound forms an abrasive layer of the abrasive member.

A nonwoven abrasive wheel includes a nonwoven abrasive body having opposed first and second major surfaces and a moisture barrier layer arranged on at least one of the first and second major surfaces. Methods of making are also described.

A nonwoven abrasive wheel includes a nonwoven abrasive body having opposed first and second major surfaces and a moisture barrier layer arranged on at least one of the first and second major surfaces. Methods of making are also described.

An abrasive body comprises portions of a first abrasive element. The portions of the first abrasive element are bonded ogether by a first binder material. The first abrasive element comprises abrasive particles bonded to a substrate by at least a second binder material. The portions of the first abrasive element are not agglomerate abrasive particles. The abrasive body has a maximum dimension, and the portions of the first abrasive element have a maximum dimension that is less than 80 percent of the maximum dimension of the abrasive body. A method of making an abrasive body is also disclosed.

An abrasive body comprises portions of a first abrasive element. The portions of the first abrasive element are bonded ogether by a first binder material. The first abrasive element comprises abrasive particles bonded to a substrate by at least a second binder material. The portions of the first abrasive element are not agglomerate abrasive particles. The abrasive body has a maximum dimension, and the portions of the first abrasive element have a maximum dimension that is less than 80 percent of the maximum dimension of the abrasive body. A method of making an abrasive body is also disclosed.

An abrasive article including a substrate; and an abrasive layer overlying the substrate, where the abrasive layer includes a blend of abrasive particles including a first type of abrasive particle comprising a polycrystalline material and having a first average friability F.sub.1, and a second type of abrasive particle comprising a polycrystalline material and having a second average friability, F.sub.2, where the blend comprises an average friability difference, ΔF=|F.sub.1−F.sub.2|, within a range of at least 0.5% to not greater than 80%.