RTV-II Silicon Rubber for electronic IC, COB encapsulating and Silicon Roll/mold use RTV - 568 is one kind of RTV-II MOLD-MAKING SILICONE AND IC encapsulation use Introduction : Two component silicone is a excellent mold making silicone rubber, due to easily process and accurate recreation to its origin shape. RTV-II have high temperature and chemicals resist. So it can be used in most mold material application as wax, gysum,cement,resin and Low melted alloy. Carol RTV-II could be used in copy of electronic and motor part, decoration Architecture etc. The specifications list as below : 室溫硬化型矽橡膠 RTV-568 簡介二液加成型之硬化矽膠乃是操作性及實用最為廣泛之矽橡膠,由於其本身具有< 0.1%低收縮率及耐高溫之特性,故廣泛應用於各種電器、電子、玻璃表面之絕緣、導熱、防震等保護,由於具備低收縮率,因此在精密模具、低熔點合金、PU樹脂或汽車零件之製造,亦可用此矽膠達到品質上之要求。物性硬化前物性 RTV-568A RTV-568B 粘度 55000 cps 55000cps 顏色 紅褐色,黑或白色 白色 比重 1.58 ± 0.02 1.58 ± 0.02 硬化後物性 (合乎UL.V-0規格) 顏色 紅褐色,黑或白色. 硬度 50 (Shore A) 收縮率 0.1% 導熱系數 0.35 w/m-K 體積電阻 > 3.0 x 1014 ohm-cm 絕緣強度 > 25 Kv/mm 熱重損失 < 0.3% 操作方法秤重 取RTV-568A與RTV-568B以1:1(重量比)之比例充份混合 去泡 將此混合物,置入真空設備中,真空度約在500 mmHg (小心氣泡溢出容器外),直到氣泡被完全抽出 灌模 小心地將混合物灌入欲成模之模具中,過程中注意避 免產生氣泡 硬化 已灌入矽膠的模具,置入80℃烘箱中30分鐘,即可 在模具中成型, 或常溫中放置24~48Hr亦可成型.
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