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  2. DOWSIL™ 1-2620 Dispersion

DOWSIL™ 1-2620 Dispersion

单组分、透明、可以通过轻微加热加快湿气 RTV 固化、低粘度、坚硬光滑的表面具有耐磨性、溶剂性、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

  • Color 是 否 Clear
  • Dielectric Strength 是 否 550 volts per mil v/mil
  • Flowable 是 否 Yes
  • Primerless Adhesion 是 否 Yes
  • Room Temperature Cure 是 否 >1 Hours
  • Shelf Life 是 否 1080 Days
  • 介电常数 100 Hz 是 否 2.69
  • 体积电阻率 是 否 4.6e+013 Ω・cm
  • 动力粘度 是 否 150 cPs
  • 固化特点 是 否 延长工作时间 > 10 分钟
  • 损耗因子 100 Hz 是 否 0.002
  • 损耗因子 100 kHz 是 否 < 0.0003
  • 比重 是 否 1.11 @ 25°C
  • 点胶施工方式 是 否 快速，流动性非常高 < 350 cps
  • 特性 是 否 IPC-CC-830B 认可, MIL 规格, UL 认可
  • 相对湿度50%时的表干时间 是 否 5 Minutes
  • 组分 是 否 单组份
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DOWSIL™ 1-2620 Dispersion
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