A resin molded body obtained from a resin composition containing a thermoplastic resin (A), a flame retardant (B), and a metal fiber (C). The resin molded body contains from 15 to 30 mass% of the flame retardant (B) and from 2.5 to 7.5 mass% of the metal fiber (C), with the remainder being 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. The resin molded body satisfies the requirements described in the following (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. 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. The distance from the flame contact position on the plaque to the burner mouth is 150 mm.
一种
树脂模塑体,由含有热塑性
树脂(A)、阻燃剂(B)和
金属纤维(C)的
树脂组合物制成。
树脂模塑体中阻燃剂(B)的含量为 15 至 30%,
金属纤维(C)的含量为 2.5 至 7.5%,其余为成分(A),总含量为 100%。在使用 UL 94 V 测试方法对厚度为 1.5 毫米的测试片进行的燃烧测试中,
树脂模塑体的测定结果为 V-0 或 V-1。
树脂模塑体满足以下(I)至(IV)项的要求。(I)
树脂模塑体的厚度为 1.5 至 8.0 毫米。(II)
树脂模塑体在用下述燃烧试验方法 E 完成燃烧试验后五分钟内自熄。(III)
树脂模塑体在按下述燃烧试验方法 E 进行燃烧试验后,没有破洞。(IV) 在 1 至 100 兆赫的频率范围内,使用 K
EC 法电场,
树脂模塑体具有 30 分贝以上的电磁波屏蔽性能。燃烧试验方法 E:使用由上述模塑体制成的牌匾(150 × 150 × 2.0 毫米)。从牌匾上方向牌匾中心直接喷射 200 毫米长的火焰,持续 130 秒。从牌匾上的火焰接触位置到燃烧器口的距离为 150 毫米。