DESCRIPTION

Multi-Cure® 984-LVUF is a highly fluorescing, single-component, 100%-solids conformal coating specifically formulated for rapid room-temperature cure when exposed to UV light.  984-LVUF retains high fluorescence after curing.  Thin-layer coatings cure almost instantly to a depth of 7 mils and fluoresce upon exposure to “black” light.  Multi-Cure® 984-LVUF also exhibits adhesion to a variety of metal, ceramic, and glass-filled epoxy surfaces.  984-LVUF is a moderately low-viscosity coating which can be cured by exposure to UV light and secondarily cured with heat for shadowed areas on densely populated circuit boards.  This product is in full compliance with the RoHS Directives 2002/95/EC and 2003/11EC.

Multi-Cure® 984-LVUF is approved to Military Specification MIL-I-46058-C, Type AR, ER, and UR (QPL#576-90).  984-LVUF meets “NSA” hydrolytic stability (reversion) requirements.

Multi-Cure® 984-LVUF is qualified to IPC-CC-830-B.

Multi-Cure® 984-LVUF is UL recognized (UL 746C), rated indoor/outdoor to 120°C, and 94V-0 flame class. 全文 »

Product Description

Hernon Polycure 744 is a single component, 100% solid system formulated for use on printed circuit boards. This coating can be cured in seconds by high intensity UV light. Low heat (10 minutes at 250ºF) can be used for curing the shaded area. The component may be removed for repair using conventional repair methods of abrasion or localized heat. The repaired part may be recoated off-line using an inexpensive UV light.

Product Benefits

• • Easy to use.
• • Cost effective.
• • Single component, no mixing.
• • 100% solid system (no solvents).
• • Short cure cycles.
• • Dual curing mechanism for shaded area.

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Product Description

Hernon Conformal Coating 739 is formulated to provide high performance and rapid cure. Conformal Coating 739 will provide an excellent bond, high light transmittance and a refractive index similar to glass. Exposure to high intensity UV light will cure the coating to a hard, dry surface.

Product Benefits

• • Easy to use.
• • Cost effective.
• • Single component, no mixing.
• • 100% solid system (no solvents).
• • Short cure cycles.

Typical Properties (Uncured)

Property Value

Resin Modified acrylic

Appearance Clear liquid

Viscosity @ 25ºC, cP 100 to 300

Specific gravity 1.11

Flash point See MSDS 全文 »

今天抽空学习了一下道康宁的涂覆材料，以1-2577的TDS为例，先了解一下涂覆（敷形）材料的大概定义：

敷形涂料：敷形涂料是应用于印刷电路或者是其它电子基材的薄层材料（一般厚度为几密耳或者几微米）。它可以提供环境的和机械的保护作用，从而显著地延长元器件和电路的使用寿命。敷形涂料传统的使用方法是浸渍、喷涂或者是简单的流动涂法，现在愈来愈多使用选择性喷涂或全自动点胶设备。

敷形涂料可以保护电子印制电路板免受潮湿和污染物的损害，避免短路和其对导体和焊点的腐蚀。它还能使导体间的金属树枝状生长和电迁移最小化。另外，应用敷形涂料还可以保护电路和元器件免受磨损和溶剂的影响。在对电路板的绝缘性起到保护作用的同时，还提供了应力消除作用。

Dow Corning敷形涂料尤其在极其恶劣的工作环境中，对于保护电路，保持元器件和线路的低应力环境非常有用。这些恶劣的环境范围包括日常的消费者电子产品所处的温度和湿度极端环境，到更加恶劣的汽车引擎盖下的环境，以及在军事或者工业应用的环境。敷形涂料可以以各种形式提供，可以在室温下固化或者加热加速固化，适合您不同的工艺要求。大多数敷形涂料包含紫外线指示剂，能够使敷形材料在紫外光下可见。 全文 »