NON-RESPIRABLE, POLYCRYSTALLINE, ALUMINOSILICATE CERAMIC FILAMENTS, FIBERS, AND NONWOVEN MATS, AND METHODS OF MAKING AND USING THE SAME

A nonwoven web including a multiplicity of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive mat, the polycrystalline, aluminosilicate ceramic filaments having an average mullite percent of at least 75 wt. %. The cohesive mat preferably exhibits a compre...

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Hauptverfasser: DE ROVERE ANNE N, BEKKER PETRUS J, MCGEE KARI A, CHIU WILLIAM V, BERRIGAN MICHAEL R, HELLER DAIMON K
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A nonwoven web including a multiplicity of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive mat, the polycrystalline, aluminosilicate ceramic filaments having an average mullite percent of at least 75 wt. %. The cohesive mat preferably exhibits a compression resilience after 1,000 cycles at 900DEG C when measured according to the Fatigue Test, of at least 30 kPa. Insulation articles including the cohesive mats or formed by chopping the ceramic mats into ceramic fibers, pollution control devices including the insulation articles, and methods of making the non-respirable, polycrystalline, aluminosilicate ceramic filaments and fibers, nonwoven webs, insulation articles, and pollution control devices, are also described. 本发明公开的非织造幅材包含多根非吸入的多晶铝硅酸盐陶瓷单纤维,所述多根非吸入的多晶铝硅酸盐陶瓷单纤维缠结以形成黏聚垫,所述多晶铝硅酸盐陶瓷单纤维的平均莫来石百分比为至少75重量%。当根据疲劳测试测量时,所述黏聚垫优选地在900℃下在1,000次循环之后表现出的压缩回弹性为至少30kPa。本发明还描述了包括所述黏聚垫或通过将所述陶瓷垫短切成陶瓷纤维而形成的绝缘制品、包括所述绝缘制品的污染控制装置以及制造所述非吸入的多晶铝硅酸盐陶瓷单纤维和所述纤维、所述非织造幅材、所述绝缘制品和所述污染控制装置的方