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Title:
RESIN MOLDED BODY
Document Type and Number:
WIPO Patent Application WO/2020/071421
Kind Code:
A1
Abstract:
A resin molded body obtained from a resin composition including a thermoplastic resin (A), a flame retardant (B), and metal fibers (C). The resin molded body contains 15%–30% by mass flame retardant (B) and 2.5%–7.5% by mass metal fibers (C), with the remainder being component (A) to make a total of 100% by mass. The resin molded body has a determination result of V–0 or V–1 in a combustion test using the UL 94 V test method, for a test piece having a thickness of 1.5 mm. The resin molded body fulfils the requirements of (I)–(IV). (I) The thickness of the resin molded body is 1.5–8.0 mm. (II) The resin molded body self-extinguishes within five minutes after a combustion test using combustion test method E has been completed. (III) The resin molded body has no openings after the combustion test using combustion test method E. (IV) The resin molded body has an electromagnetic wave shielding value of more than 30 dB using a KEC method electric field, in a frequency range of 1–100 MHz. Combustion test method E: A flat plate (150 × 150 × 2.0 mm) comprising said molded body is used. A flame 200 mm long is used and is applied from above the flat plate directly onto the center of the flat plate for 130 seconds. The distance from the flame contact position on the flat plate to the burner mouth is 150 mm.

Inventors:
KATAYAMA HIROSHI (JP)
UEDA TAKAFUMI (JP)
Application Number:
PCT/JP2019/038898
Publication Date:
April 09, 2020
Filing Date:
October 02, 2019
Export Citation:
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Assignee:
DAICEL POLYMER LTD (JP)
International Classes:
C08J5/00; C08K7/04; C08L23/12; C08L101/00
Foreign References:
JPS6377971A1988-04-08
JPH10195311A1998-07-28
JPH07138485A1995-05-30
JPH11115011A1999-04-27
JPS60262855A1985-12-26
JP2014133808A2014-07-24
JPH0776640A1995-03-20
JP2009167270A2009-07-30
JP5959183B22016-08-02
Other References:
"Effect of carbon fiber amount and length on flame retardant and mechanical properties of intumescent polypropylene composites", JOURNAL OF COMPOSITE MATERIALS, vol. 52, no. 4, 2018, pages 519 - 530
See also references of EP 3862379A4
Attorney, Agent or Firm:
FURUYA Satoshi (JP)
Download PDF:
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