公开(公告)号：US20220227100A1

公开(公告)日：2022-07-21

申请号：US17595597

申请日：2020-06-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Heonjoo Ha ,  Tien Tsung Wu ,  Nathan E. Schultz ,  Gerry A. Hoffdahl

IPC: B32B5/26 ,  H01M50/249 ,  B32B5/02 ,  B32B5/08

Abstract: A nonwoven fibrous web includes a flame retardant nonwoven fabric coated with a fire retardant, wherein the fire retardant comprises ammonium polyphosphate or alkali metal silicate; and wherein the flame retardant nonwoven fabric has a first major surface and an opposed second major surface; a first nonwoven fabric covering at least a portion of the first major surface; and a second nonwoven fabric covering at least a portion of the second major surface. The first and second nonwoven fabrics each comprise oxidized polyacrylonitrile fibers and optional reinforcing fibers.

公开(公告)号：US20220242089A1

公开(公告)日：2022-08-04

申请号：US17595591

申请日：2020-06-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Heonjoo Ha ,  Tien Tsung Wu ,  Nathan E. Schultz ,  Gerry A. Hoffdahl

IPC: B32B5/24 ,  B32B5/18 ,  B32B5/02 ,  B32B5/08 ,  H01M50/249 ,  C08K3/32 ,  C08K3/34 ,  C08J9/36

Abstract: A flame retardant foam. The flame retardant foam includes a from 25 to 75 wt % polyvinyl alcohol foam; and a from 25 to 95 wt % fire retardant coated on the polyvinyl alcohol foam, wherein the fire retardant comprises ammonium polyphosphate or sodium metasilicate; wherein the thickness of the foam is from 2 mm to 1 cm.