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  2. DOWSIL™ 1-2577 Low VOC Conformal Coating

DOWSIL™ 1-2577 Low VOC Conformal Coating

单组分、透明、可以通过轻微加热加快湿气 RTV 固化、坚硬光滑的表面具有耐磨性、溶剂型（在许多区域挥发性有机化合物被免除）、UL 和军用规格、含有 UV 指示剂。

用途:

  • Conformal Coating suitable for protective coating for rigid and flexible circuit boards and for PCB system Printed Wiring Board (PWB) applications, particularly those requiring toughness and abrasion resistance.

优势:

  • Cures to a tough, elastoplastic, resilient, abrasion resistant surface
  • One-part Solvent-borne resin coating
  • Room temperature cure, no ovens required
  • Optional mild heat acceleration (after solvent flash-off) can speed in-line processing
  • UV indicator allows for automated inspection
  • UL 94 V-0 flammability rating
  • UL 746E / UL746C Recognized
  • IPC-CC-830, Amendment 1 Approved
  • Mil-I-46058C, Amendment 7 Approved
  • Good adhesion allows use with many low-solids (no clean) and no-lead solders

性能

这些数值为典型性能，并且不用于在规格制定过程中使用。

典型性能

  • 介电常数 100 Hz 是 否 2.34
  • 介电常数 100 kHz 是 否 2.33
  • 低气味 是 否 true
  • 体积电阻率 是 否 1.9e+014 Ω・cm
  • 固化特点 是 否 延长工作时间 > 10 分钟
  • 固化类型 是 否 室温硫化
  • 损耗因子 100 Hz 是 否 0.0011
  • 损耗因子 100 kHz 是 否 0.0003
  • 温度范围 是 否 -45 to 200 °C
  • 溶剂型 是 否 true
  • 溶剂类型 是 否 低挥发性有机化合物
  • 点胶施工方式 是 否 较厚层施用 850 至 2500 cps
  • 特性 是 否 IPC-CC-830B 认可, MIL 规格, UL 认可
  • 硬度 是 否 耐磨性=80A
  • 硬度-Shore A 是 否 85 Shore A
  • 硬度-Shore D 是 否 25 Shore D
  • 粘度 是 否 1050 mPa.s
  • 颜色 是 否 清除
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