High performance silicon based coatings

    公开(公告)号:US10301507B2

    公开(公告)日:2019-05-28

    申请号:US16165557

    申请日:2018-10-19

    摘要: Provided herein is a method of coating a surface. A silicon-based coating composition is coated onto a surface. The composition comprises 5% to 80% polysilazane, 20% to 60% polysiloxane, and polysilane of a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and are chosen from alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl, which polysilane has a weight average molecular weight of more than 50,000, and optionally organic solvent. The coating is cured ambiently to provide a non-ceramic clear coating having a thickness ranging between 0.1 mil and 1.5 mil, a hardness ranging between 2H and 9H in accordance with ASTM 3363 for film hardness by pencil test, and a kinetic coefficient of friction between 0.03 and 0.04. Also provided are silicon-based coating compositions and cured coatings from those compositions using the provided method.

    High performance silicon based thermal coating compositions

    公开(公告)号:US10138381B2

    公开(公告)日:2018-11-27

    申请号:US13891438

    申请日:2013-05-10

    发明人: Chris Fish

    摘要: A silicon based coating composition for a wide range of surfaces, which composition is formed from a mixture of constituents comprising appropriate portions of silazane, siloxane, and silane, and optionally organic solvent and additives, and the composition results in a coating having a thickness between 0.4 mil and 1.5 mil, a hardness of 4-9H and an endurance to continuous temperature above 1600° F.

    High performance silicon based coatings

    公开(公告)号:US11015083B2

    公开(公告)日:2021-05-25

    申请号:US16844513

    申请日:2020-04-09

    摘要: Provided herein is a method of coating a surface. A silicon-based coating composition is coated onto a surface. The silicon-based coating composition comprises polysilazane and polysilane comprising a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and are chosen from alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl, which polysilane has a weight average molecular weight of more than 50,000. Also provided are silicon-based coating compositions and cured coatings from those compositions using the provided method.

    High performance compositions and composites

    公开(公告)号:US10538685B2

    公开(公告)日:2020-01-21

    申请号:US15600084

    申请日:2017-05-19

    申请人: Techneglas LLC

    发明人: Christopher Fish

    摘要: Provided herein is a composition comprising from 50% to 60% polysiloxane consisting essentially of polyphenylmethylsiloxane and α,ω-methoxy-terminated polydimethylsiloxane, from 40% to 50% organic solvent, from 2% to 4% polysilazane, and polysilane of a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and are alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl. The composition, after curing, is a flame resistant binder for forming a composition-fiber composite that withstands repeated temperatures over 1800° F. The composition may further comprise from 0.1% to 2% of an enhancer selected from butyltitanate and aminoethylaminopropyltrimethoxysilane (H2NC2H4NHC3H6—Si(OCH3)3). The composition may be mixed with fibers in a ratio of 35:65 to 45:55 (w/w), and the composition-fiber mixture may be cured under vacuum at a temperature of 200° F. to 450° F. for 30 minutes to 180 minutes to form a composite.