초록 ▼

Fluoropolymer containing coatings are applied to substrates, preferably textile substrates, to obtain composites which are flexible and not brittle, and which exhibit a low coefficient of friction, good wear resistance and excellent release properties. This invention comprises the technique of initi

Fluoropolymer containing coatings are applied to substrates, preferably textile substrates, to obtain composites which are flexible and not brittle, and which exhibit a low coefficient of friction, good wear resistance and excellent release properties. This invention comprises the technique of initially coating a flexible substrate, such as glass fabric or a metal mesh, with a fluoropolymer, which serves to prevent cracking upon flexing. The precoated substrate is thereafter coated with a blend of a hard polymer and a fluoropolymer which adheres well to the pre-coated intermediate substrate. Significantly, the composites of the invention are flexible, yet possess the wear resistance of the hard polymer component as well as the frictional and release characteristics of the fluoropolymer components.

대표청구항 ▼

A flexible composite which comprises a flexible substrate coated on one or both faces with a matrix comprising: (a) an initial fluoropolymer-containing layer which includes a fluoroplastic, a curative-free fluoroelastomer or blends or combinations thereof; and (b) an overcoat layer comprising a blen

A flexible composite which comprises a flexible substrate coated on one or both faces with a matrix comprising: (a) an initial fluoropolymer-containing layer which includes a fluoroplastic, a curative-free fluoroelastomer or blends or combinations thereof; and (b) an overcoat layer comprising a blend of (i) a hard polymer and (ii) a fluoropolymer, wherein the fluoropolymer includes a fluoroplastic, a curative-free fluoroelastomer or blends or combinations thereof and wherein said fluoropolymer may comprise from about 40 to 90 percent by weight of the blend of hard polymer and fluoropolymer.