Resin molded body
AssigneeDaicel Miraizu Ltd.
InventorsHiroshi KATAYAMA, Takafumi UEDA
Life of this patent
Estimating the term…
Abstract
Resin molded body obtained from a resin composition containing thermoplastic resin, flame retardant, and metal fiber. The molded body contains from 15 to 30 mass % of flame retardant and from 2.5 to 7.5 mass % of metal fiber, the remainder being thermoplastic resin. The molded body has a determination result of V-0 or V-1 in a burning test using the UL 94 V test method. The molded body satisfies the following: a thickness of the resin molded body is from 1.5 to 8.0 mm; the molded body self-extinguishes within five minutes after a burning test; the molded body does not have a hole after burning; and the molded body has an electromagnetic wave shielding property of more than 30 dB using a KEC method electric field in a frequency range from 1 to 100 MHz.
Claims8
A resin molded body obtained from a resin composition comprising a thermoplastic resin (A), a flame retardant (B), and a metal fiber (C), wherein the resin molded body comprises from 15 to 30 mass % of the flame retardant and from 2.5 to 7.5 mass % of the metal fiber (C), with the remainder being the component (A) to make a total of 100 mass %;
- the resin molded body has a determination result of V-0 or V-1 in a burning test using the UL 94 V test method on a test piece having a thickness of 1.5 mm;
- and the resin molded body satisfies the requirements described in (I) to (IV):
- (I) A thickness of the resin molded body is from 1.5 to 8.0 mm;
- (II) The resin molded body self-extinguishes within five minutes after the completion of a burning test using burning test method E as described below;
- (III) The resin molded body does not have a hole after being subjected to a burning test using burning test method E as described below;
- (IV) The resin molded body has an electromagnetic wave shielding property of more than 30 dB using a KEC method electric field in a frequency range from 1 to 100 MHz;
- where
- Burning test method E:
- A plaque (150×150×2.0 mm) made of the molded body described above is used;
- a 200 mm-long flame is applied from above the plaque directly onto the center of the plaque for 130 seconds, and
- the distance from the flame contact position on the plaque to the burner mouth is 150 mm.
A resin molded body obtained from a resin composition comprising a thermoplastic resin (A), a flame retardant (B), a metal fiber (C), and a glass fiber (D), wherein the resin molded body comprises from 15 to 30 mass % of the flame retardant (B), from 2.5 to 7.5 mass % of the metal fiber (C), and from 5 to 50 mass % of the glass fiber (D), with the remainder being the component (A) to make a total of 100 mass %;
- the resin molded body has a determination result of V-0 or V-1 in a burning test using the UL 94 V test method on a test piece having a thickness of 1.5 mm;
- and the resin molded body satisfies the requirements described in (I) to (IV):
- (I) A thickness of the resin molded body is from 1.5 to 8.0 mm;
- (II) The resin molded body self-extinguishes within five minutes after the completion of a burning test using burning test method E as described below;
- (III) The resin molded body does not have a hole after being subjected to a burning test using burning test method E as described below;
- (IV) The resin molded body has an electromagnetic wave shielding property of more than 30 dB using a KEC method electric field in a frequency range from 1 to 100 MHz;
- where
- Burning test method E:
- A plaque (150×150×2.0 mm) made of the molded body described above is used,
- a 200 mm-long flame is applied from above the plaque directly onto the center of the plaque for 130 seconds, and
- the distance from the flame contact position on the plaque to the burner mouth is 150 mm.
A resin molded body obtained from a resin composition comprising a thermoplastic resin (A), a flame retardant (B), a metal fiber (C), a glass fiber (D), and at least one carbonization accelerator (E) selected from the group consisting of magnesium bicarbonate, zinc oxide, titanium oxide, magnesium oxide, and silicon oxide, wherein the resin molded body comprises from 15 to 30 mass % of the flame retardant (B), from 2.5 to 7.5 mass % of the metal fiber (C), from 5 to 50 mass % of the glass fiber (D), and from 0.7 to 5.0 mass % of the carbonization accelerator (E), with the remainder being the component (A) to make a total of 100 mass %;
- the resin molded body has a determination result of V-0 or V-1 in a burning test using the UL 94 V test method on a test piece having a thickness of 1.5 mm;
- and the resin molded body satisfies the requirements described in (I) to (IV):
- (I) A thickness of the resin molded body is from 1.5 to 8.0 mm;
- (II) The resin molded body self-extinguishes within five minutes after the completion of a burning test using burning test method E as described below;
- (III) The resin molded body does not have a hole after being subjected to a burning test using burning test method E as described below;
- (IV) The resin molded body has an electromagnetic wave shielding property of more than 30 dB using a KEC method electric field in a frequency range from 1 to 100 MHz;
- where
- Burning test method E:
- A plaque (150×150×2.0 mm) made of the molded body described above is used,
- a 200 mm-long flame is applied from above the plaque directly onto the center of the plaque for 130 seconds, and
- the distance from the flame contact position on the plaque to the burner mouth is 150 mm.
Dependencies are inferred from the claim text.