Fire-resistant article

Patent metadata

Field	Value
Publication number	US-2024059886-A1
Application number	US-202318496084-A
Country	US
Kind code	A1
Filing date	Oct 27, 2023
Priority date	Apr 30, 2021
Publication date	Feb 22, 2024
Grant date	—

Abstract

A flame retardant article has excellent flame retardancy. The flame retardant article contains a cured resin member that is obtained by curing a thermosetting resin composition containing a thermosetting resin. The cured resin member forms an oxygen insulating carbonized layer when being burned. The cured resin member is present in at least a part of a surface of the expanded member obtained by expanding a thermoplastic resin composition containing a thermoplastic resin. The thermoplastic resin generates a residue when heated to 600° C. at a temperature increase rate of 10° C./minute under a nitrogen atmosphere.

First claim

1 . A flame retardant article comprising:
an expanded member obtained by expanding a thermoplastic resin composition comprising a thermoplastic resin; and a cured resin member obtained by curing a thermosetting resin composition comprising a thermosetting resin, wherein the thermoplastic resin generates a residue when heated from 35° C. to 600° C. at a temperature increase rate of 10° C./minute under a nitrogen atmosphere, the cured resin member forms an oxygen insulating carbonized layer when burned, and the cured resin member is present in at least a part of a surface of the expanded member.

2 . The flame retardant article as set forth in claim 1 , wherein a residue ratio of the thermoplastic resin is 10% or more when the thermoplastic resin is heated from 35° C. to 600° C. at a temperature increase rate of 10° C./minute under a nitrogen atmosphere.

3 . The flame retardant article as set forth in claim 1 , wherein the thermosetting resin composition further comprises a flame retardant.

4 . The flame retardant article as set forth in claim 3 , wherein the flame retardant comprises a phosphorus-based flame retardant.

5 . The flame retardant article as set forth in claim 3 , wherein an amount of the flame retardant is 0.1 parts by weight to 200.0 parts by weight, relative to 100 parts by weight of the thermosetting resin.

6 . The flame retardant article as set forth in claim 1 , wherein a gross calorific value is 8.00 MJ/m 2 or less when the flame retardant article is heated at a radiant heat intensity of 50 kW/m 2 for 20 minutes.

7 . The flame retardant article as set forth in claim 1 , wherein the thermosetting resin contains at least one selected from the group consisting of phenol-based resins, epoxy-based resins, and polyurethane-based resins.

8 . The flame retardant article as set forth in claim 1 , wherein the thermosetting resin composition further comprises a phenol-based compound.

9 . The flame retardant article as set forth in claim 8 , wherein the phenol-based compound is monohydric phenol and/or polyhydric phenol.

10 . The flame retardant article as set forth in claim 8 , wherein an amount of the phenol-based compound is 0.1 parts by weight to 50.0 parts by weight, relative to 100 parts by weight of the thermosetting resin.

11 . The flame retardant article as set forth in claim 1 , wherein the thermoplastic resin comprises a vinyl halide-based resin and/or an acrylonitrile-based resin.

12 . The flame retardant article as set forth in claim 1 , wherein the expanded member is constituted by expanded particles.

13 . The flame retardant article as set forth in claim 1 , wherein the thermoplastic resin composition further comprises a radiative heat transfer inhibitor.

Assignees

• Kaneka Corp

Inventors

• Yoshida Takuma
• Neiwa Yuki
• Nishimoto Yutaka
• Tanaka Katsuyuki

Classifications

• C08J2461/06

  of aldehydes with phenols · CPC title

• C08J2327/24

  halogenated · CPC title

• C08J2327/06

  Homopolymers or copolymers of vinyl chloride · CPC title

• C08L25/12

  with unsaturated nitriles · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title