Clear, flowable RTV silicone coating

ACC AS1722 is a clear, low viscosity room temperature cure silicone which can be used to seal, bond and coat sensitive electronic components. It has excellent adhesion to most substrates including plastics and will not cause corrosion of sensitive metals such as copper. It is supplied in convenient 310ml cartridges.

ACC AS1722 is a specially formulated neutral cure silicone sealant designed for use with electronic assemblies. An alkoxy 1-part room temperature vulcanising (RTV) silicone sealant, the system produces a sealant with excellent adhesion to most common substrates.

Key Features

• High clarity


• Contains UV trace for inspection


• Adhesion to many substrates

Typical Applications

• Assembly of electrical and electronic equipment


• Sealing of corrosion sensitive devices


• Shallow encapsulation of small circuits and connectors

Conformal coating webinar

Sales partners DYMAX recently hosted a webinar called Conformal Coating at the Speed of Light: UV Conformal Coating from Start to Finish. The webinar focuses on cost savings of UV and how to qualify and maintain an effective UV conformal coating process. UV conformal coatings cure in seconds to allow for maximum process speed while consuming minimal energy and labor. As environmental regulations strengthen, budgets get tighter, and smaller circuits are positioned in harsher operating conditions, the technology is becoming increasingly accepted as a means to ensure performance throughout product lifecycle. UV conformal coatings have been successfully deployed in the consumer, military, and appliance markets for over 20 years. Various UV conformal coatings are designed to meet common MIL, IPC, and UL specifications allowing for widespread adoption. RoHS compliant, halogen-free, and solvent-free grades are available.

Register to download the webinar from DYMAX’s website at www.dymax.com/conformal. The question and answer portion of the webinar is also available for reviewing.

Tack-free in 3 minutes

Conformal coating of electronic assemblies is an often vital protection measure in industries such as automotive, aviation, consumer electronics, domestic appliances and industrial meters and controls – and it is one much under consideration at the present time. There is always great pressure on cycle time for pcb assembly and the cure time of traditional conformal coatings is frequently seen as a bottleneck. Turbo-Coat dries tack-free in 3 minutes and we are delighted therefore that Techspray have again managed to be one step ahead of the pack. Their Turbo-Coat quick dry product is just what is needed to significantly improve efficiency in this area.

Turbo-Coat dries tack-free in 3 minutes, allowing manufacturers to handle boards in 1/3 the time of the most commonly used acrylic coatings. Full cure can be achieved as quickly as 10 minutes with elevated temperatures. Turbo-Coat can be either sprayed or brushed, or boards can be dipped directly into the coating for a thicker layer of protection in a single pass. Because of its low viscosity (averaging 20 cps), Turbo-Coat can generally be used in an automated spray system without the risk of cob-webbing. Turbo-Coat greatly facilitates fast easy production, re-work and repair by its easy workability, and by the inclusion of a UV indicator to speed up black light QC inspection.

Turbo-Coat acrylic conformal coating does not contain chemicals listed under SVHC (Substances of Very High Concern), defined by REACH. Not only is Turbo-Coat fully RoHS compliant it is also free from many of the typically hazardous solvents contained in other conformal coatings – such as MEK, toluene and xylene - making handling and ventilation easier to manage. We are constantly seeking safer, faster product solutions and this one certainly seems to fit the bill.

Turbo-Coat acrylic conformal coating fully complies with IPC-CC-830 and MIL-I-46048C standards. Turbo-Coat has achieved a V-0 rated tested under the UL94 flammability standard.

New Techspray information for 2009

We have started to integrate into our website some new catalogue sheets from sales partner Techspray. There are seven of them, which you can download here:

• Conformal Coatings & Temporary Solder Masks


• Duster & Freeze Sprays


• ESD & Anti-Static Products


• Cutters & Brushes


• Precision Cleaners & Defluxers


• Rework & Desoldering Braid


• Wipes & Swabs

More seminar news

We will be talking about UV Technology for Encapsulation at a seminar on Tuesday next week, March 10, at the Williams F1 Centre, Grove, Oxfordshire.

It is under the aegis of the UK Display and Lighting Knowledge Transfer Network. The network has been set up by the Technology Strategy Board as a means of encouraging networking and knowledge transfer opportunities within the displays, plastic electronics and lighting industry. One of the events arranged for 2009 is a one day seminar on Integrating Plastic Electronics which addresses the issues related to turning plastic electronics technology into products.

Conformal coating latest

First level defence of electronic assemblies is often a post-assembly dielectric coaing used to protect against moisture, bio-hazards and low level mechanical problems. Our sales partner DYMAX Corp have trialled their new Dual-Cure 9481 Conformal Coating, showing significant improvements over previously available products.

Dual-Cure 9481 is a new coating which represents the latest leap in light/moisture cure technology. Dual-Cure 9481 is specifically formulated to ensure complete cure in coating applications where shadowed areas on high density circuit boards are a concern. Previously, areas shadowed from light were managed by selective coating - eliminating the need to cure in shadowed areas - or a secondary heat cure process. Users needed to balance the cost of selective dispensing equipment and time/energy costs of a secondary heat cure. With Dual-Cure 9481 Conformal Coating, shadowed areas cure over time with moisture, eliminating the need for that second process step or concerns of component life degradation due to temperature exposure. In addition, Dual-Cure 9481 fluoresces bright blue when exposed to UV light and is low viscosity, allowing it to be dispensed easily.

DYMAX has conducted extensive laboratory, as well as field testing of Dual-Cure 9481, which is now available from us. The results indicate substantial progress in addressing those challenges typically associated with conventional dual-cure materials. Dual-Cure 9481 is formulated to address high-volume production and field trials have resulted in very favourable response from a variety of pcb assemblers.

Historically, light-cured conformal coatings have been most successful in applications with no or minimal shadowing. Shadow areas, which can inhibit the access of light, have the potential to hold or trap the conformal coating and limit the full cure of the materials. In recent years, several companies have made attempts to commercialise conformal coatings which address the need for shadow curing with conventional moisture curing as a secondary cure mechanism. Most of these attempts have had limits related to the efficiency of the cure as well as the consistency of the final properties. Other challenges have included special packaging and handling requirements as well as objectionable odours – substantially now dealt with in DYMAX Dual-Cure 9481.

New DYMAX information sources

Our Sales Partners DYMAX have been busy building special websites for some of their latest leading edge products.

Check out:

• www.dual-cure.com
  UV and moisture cure conformal coating


• www.seeitcure.com
  Colour change on cure - a great innovation in process control


• www.ultraredadhesive.com
  Strong, red fluorescence for quality control

These are exciting new resources for exciting new products.

Latest brochure for electronics assembly adhesives

Download the complete DYMAX Electronics Adhesives, Coatings & Encapsulants Selector Guide (548Kb pdf).

Single part, solvent free silicone conformal coating

ACC 14 is a new silicone conformal coating which is single part, 100% solids and solvent free. The RTV (ambient temperature curing) coating has been formulated to provide protection for high specification printed circuit boards.

Key features:

• 1-part, no mixing


• Clear


• Ambient temperature cure - touch dry in 15 minutes


• Wide service temperature range (-50°C to +200°C)


• Low viscosity


• Excellent adhesion


• Excellent resistance to solvents, humidity and mould


• Solvent free, 100% solids content


• No shadowing effect

It can be applied by dip, spray coating, selective spray applicators, and flooding. No solvent dilution is required to achieve application viscosity. And, it's pretty safe to use! No flash-proof equipment needed, and there are no risk or safety phrases associated with it.

Let us know if you need it!

A fast cure for coatings - the user view

Here's a clip of my old friend Tom Charlton of Electronic Coating Technologies, Canada, talking about why he uses DYMAX Conformal Coatings: