執(zhí)行標(biāo)準(zhǔn): Referenced Standard : | | JB/T 7770-1995 |
產(chǎn)品應(yīng)用 Applications | | 優(yōu)異的電氣性能;較高的機械強度;可靠的阻燃性、耐電弧性,該材料具有可靠的尺寸穩(wěn)定性,在成型時要求壓力小、時間短等特點。廣泛應(yīng)用于電工電氣、汽車、建筑、鐵路等行業(yè)。 Excellent electrical properties, high mechanical strength, reliable flame resistance, arc resistance, and reliable dimensional stability. This product can be molded at a low pressure in a short period,Widely used in electrical field,civil construction,railway, and auto field. |
項目 Properties | 單位 Unit | 指標(biāo)值 Value |
型號 Grade | | SMC-1 高電氣 高機械型 | SMC-2 高電氣 機械型 | SMC-3 普通 機械型 | DMC-1 高電氣 高機械型 | DMC-2 高電氣 機械型 | DMC-3 普通 機械型 |
密度 Density | g/cm3 | 1.75-1.95 |
吸水性 Water Absorption | mg | ≤20 | ≤20 | - | ≤20 | ≤20 | - |
模塑收縮率 Molding shrinkage ratio | % | ≤0.15 | ≤0.15 | ≤0.30 | ≤0.15 | ≤0.15 | ≤0.30 |
熱變形溫度(A法) Heat Distortion Temp(A). | ℃ | ≥240 | ≥240 | ≥220 | ≥240 | ≥240 | ≥220 |
沖擊強度(簡支梁,無缺口) Impact strength (Charpy in-notched) | kJ/m2 | ≥90 | ≥60 | ≥45 | ≥30 | ≥25 | ≥20 |
彎曲強度 Flexural Strength | MPa | ≥170 | ≥150 | ≥135 | ≥90 | ≥80 | ≥70 |
絕緣電阻Insulation resistance | 常態(tài)(A) Under normal conditions | Ω | ≥1.0×1013 | ≥1.0×1013 | ≥1.0×1012 | ≥1.0×1013 | ≥1.0×1013 | ≥1.0×1012 |
浸水24小時后(D-24/23) Immerged in water for 24 hours | ≥1.0×1012 | ≥1.0×1012 | - | ≥1.0×1012 | ≥1.0×1012 | - |
電氣強度(于90℃變壓器油中) Dielectric Strength(in 90℃ oil) | MV/m | ≥12.0 | ≥12.0 | ≥10.0 | ≥12.0 | ≥12.0 | ≥10.0 |
介質(zhì)損耗因數(shù)(1MHz) Dissipation Factor (1MHz) | - | ≤0.015 | ≤0.015 | - | ≤0.015 | ≤0.015 | - |
相對介電常數(shù)(1MHz) Permittivity(1MHz) | - | ≤4.5 | ≤4.5 | - | ≤4.8 | ≤4.8 | - |
耐電弧 Arc Resistance | S | ≥180 | ≥180 | ≥150 | ≥180 | ≥180 | ≥180 |
耐漏電起痕指數(shù)(PTI) Proof Tracking Index (PTI) | V | ≥600 | ≥600 | ≥600 | ≥600 | ≥600 | ≥600 |
燃燒性 Flammability | - | FV0 | FV0 | - | FV0 | FV0 | - |
長期耐熱性溫度指數(shù) Temperature Index | - | 155 | 155 | 130 | 155 | 155 | 130 |