公开(公告)号：US20220178061A1

公开(公告)日：2022-06-09

申请号：US17651948

申请日：2022-02-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anne N. de Rovere ,  Kari A. McGee ,  Daimon K. Heller ,  William V. Chiu ,  Petrus J. Bekker ,  Michael R. Berrigan

IPC: D04H3/115 ,  C04B35/18 ,  C04B35/622 ,  C04B35/624 ,  D04H1/4209 ,  D04H3/004 ,  D04H3/03 ,  D04H3/105

Abstract: A non woven 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 900° 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.

公开(公告)号：US20200002861A1

公开(公告)日：2020-01-02

申请号：US16461395

申请日：2017-11-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anne N. de Rovere ,  Kari A. McGee ,  Daimon K Heller ,  William V. Chiu ,  Petrus J. Bekker ,  Michael R. Berrigan

IPC: D04H3/115 ,  C04B35/622 ,  C04B35/624 ,  C04B35/18 ,  D04H1/4209 ,  D04H3/004 ,  D04H3/03 ,  D04H3/105

Abstract: 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 900° 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.