執(zhí)行標(biāo)準(zhǔn):
Referenced Standard :
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JB/T 7770-1995
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產(chǎn)品應(yīng)用
Applications
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優(yōu)異的電氣性能;較高的機(jī)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 automobile field.
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項目
Properties
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單位
Unit
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指標(biāo)值
Value
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型號
Grade
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SMC-1
高電氣
高機(jī)械型
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SMC-2
高電氣
機(jī)械型
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SMC-3
普通
機(jī)械型
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DMC-1
高電氣
高機(jī)械型
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DMC-2
高電氣
機(jī)械型
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DMC-3
普通
機(jī)械型
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密度
Density
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g/cm3
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1.75-1.95
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吸水性
Water Absorption
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mg
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≤20
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≤20
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-
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≤20
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≤20
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-
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模塑收縮率
Molding shrinkage ratio
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%
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≤0.15
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≤0.15
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≤0.30
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≤0.15
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≤0.15
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≤0.30
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熱變形溫度(A法)
Heat Distortion Temp(A).
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℃
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≥240
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≥240
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≥220
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≥240
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≥240
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≥220
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沖擊強度(簡支梁,無缺口)
Impact strength (Charpy in-notched)
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kJ/m2
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≥90
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≥60
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≥45
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≥30
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≥25
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≥20
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彎曲強度
Flexural Strength
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MPa
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≥170
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≥150
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≥135
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≥90
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≥80
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≥70
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絕緣電阻Insulation resistance
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常態(tài)(A)
Under normal conditions
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Ω
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≥1.0×1013
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≥1.0×1013
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≥1.0×1012
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≥1.0×1013
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≥1.0×1013
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≥1.0×1012
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浸水24小時后(D-24/23)
Immerged in water for 24 hours
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≥1.0×1012
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≥1.0×1012
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-
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≥1.0×1012
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≥1.0×1012
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-
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電氣強度(于90℃變壓器油中)
Dielectric Strength(in 90℃ oil)
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MV/m
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≥12.0
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≥12.0
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≥10.0
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≥12.0
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≥12.0
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≥10.0
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介質(zhì)損耗因數(shù)(1MHz)
Dissipation Factor (1MHz)
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-
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≤0.015
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≤0.015
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-
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≤0.015
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≤0.015
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-
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相對介電常數(shù)(1MHz)
Permittivity(1MHz)
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-
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≤4.5
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≤4.5
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-
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≤4.8
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≤4.8
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-
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耐電弧
Arc Resistance
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S
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≥180
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≥180
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≥150
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≥180
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≥180
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≥180
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耐漏電起痕指數(shù)(PTI)
Proof Tracking Index (PTI)
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V
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≥600
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≥600
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≥600
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≥600
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≥600
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≥600
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燃燒性
Flammability
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-
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FV0
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FV0
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-
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FV0
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FV0
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-
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長期耐熱性溫度指數(shù)
Temperature Index
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-
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155
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155
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130
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155
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155
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130
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