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公开(公告)号：US20210002791A1
公开(公告)日：2021-01-07
申请号：US17023532
申请日：2020-09-17
Applicant: KURARAY CO., LTD.
Inventor： Takeshi TSUDAKA , Shohei TSUNOFURI , Yosuke WASHITAKE
Abstract: Provided is a semi-aromatic polyamide fiber having excellent spinning stability, heat resistance and chemical resistance. The semi-aromatic polyamide fiber includes a semi-aromatic polyamide resin having a melting point of 290° C. or higher and a plasticizer having a 5% thermal weight reduction temperature of 320° C. or higher, the resin having as a dicarboxylic acid component an aromatic dicarboxylic acid unit and as a diamine component 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in a molar ratio (the former:the latter) of 70:30 to 99:1.
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公开(公告)号：US20230228035A1
公开(公告)日：2023-07-20
申请号：US18118170
申请日：2023-03-07
Applicant: KURARAY CO., LTD.
Inventor： Satoshi KATSUYA , Haruna MITSUMORI , Ryokei ENDO , Shohei TSUNOFURI , Tsugumi YOSHIDA
CPC classification number: D21H13/20 , D04H1/4218 , D04H1/55 , D04H1/732 , D04H1/587 , D04H1/5418 , D21H13/40
Abstract: Provided is a space filling material having excellent strength in reinforcing a predetermined space to be filled with the space filling material and/or strength in fixing a material to be fixed therewith. The space filling material (11) includes reinforcing fibers and a thermoplastic resin, wherein the reinforcing fibers form a plurality of intersections at least a part of which are bonded with the thermoplastic resin, and among all of the reinforcing fibers, a proportion in volume of reinforcing fibers each having a bent ratio of 1.004 or higher is 20 vol % or more relative to a total volume of the reinforcing fibers, the bent ratio being defined as a ratio of fiber length/shortest distance between opposite ends of fiber. The space filling material (11) expands to fill a predetermined space (13) when the thermoplastic resin is softened by heating to release bending loads of the reinforcing fibers.
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