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THERMOPLASTIC RESIN COMPOSITION HAVING REDUCED IMPACT NOISE AND MOLDED BODY HAVING REDUCED IMPACT NOISE
THERMOPLASTIC RESIN COMPOSITION HAVING REDUCED IMPACT NOISE AND MOLDED BODY HAVING REDUCED IMPACT NOISE
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机译:具有降低的冲击噪声的热塑性树脂组合物和具有降低的冲击噪声的模具主体
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摘要
A thermoplastic resin composition that can provide molded articles that are not only highly rigid but also inhibited from generating hitting sound is provided, which has a bending modulus of 1850 MPa or higher as measured in accordance with ISO 178 and has a maximum sound pressure value of 2.0 Pa/N or lower as determined over a range of 20-20,000 Hz based on a frequency spectrum of sound pressure obtained by striking the center of one surface of a test piece with a force of 20±5 N using a stainless steel hammer, and collecting a sound generated at this moment using a sound pressure microphone placed at a distance of 12 cm perpendicularly from the above surface, the test piece being an integrally molded article having a rectangular main body that is 120 mm long, 60 mm wide and 3 mm thick and is provided with an upper end thereof with a trapezoidal protrusion that has a 20 mm upper base and a 40 mm lower base, is 8 mm tall and 1.5 mm thick, and being suspended by two strings taped to the protrusion.
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机译:提供了一种热塑性树脂组合物,该组合物可以提供不仅具有高刚性而且还防止产生敲击声的模制品,其根据ISO 178测得的弯曲模量为1850 MPa或更高,并且最大声压值为。在20-20,000 Hz的范围内根据声压的频谱确定的2.0 Pa / N或更低,该声压的频谱是通过使用不锈钢锤以20±5 N的力敲击试样的一个表面的中心而获得的,并使用距上述表面垂直12厘米的声压麦克风收集此时产生的声音,该测试件是一体成型的制品,具有长120毫米,宽60毫米,长3毫米的矩形主体。厚1毫米,上端带有梯形突起,上基座20毫米,下基座40毫米,高8毫米,厚1.5毫米,由两条绑在绳子上的绳悬挂。突出。
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