Humiseal 1B31 is a single part, solvented acrylic coating, which "dries"
(solvent evaporation) fully in about 1-7 days at room temperature,
depending. Solvented acrylic coatings are very popular and widely used,
in my experience.
In general terms, you will get more robust protection from a coating
which fully cross-links, and this often means adding external energy
(heat or light, etc).
Selection of the optimal coating depends on a number of factors,
including operating temperatures and working environments, customer
specifications, electrical characteristics, reworkability and even
production volumes and required process speed. No one coating is
necessarily better than another; horses for courses.
Regards,
Peter
--------------------------------------------------------
Peter Swanson [log in to unmask]
INTERTRONICS http://www.intertronics.co.uk
Tel: +44 1865 842842 Oxfordshire, England
INTERTRONICS is dedicated to providing quality material, consumable
and equipment solutions to the high technology, high performance
assembly industries, incorporating outstanding levels of technical
support and customer service.
Read our news! http://www.intertronics.co.uk/blog/blog.htm
-----Original Message-----
From: Reuven Rokah [mailto:[log in to unmask]]
Sent: 18 September 2008 14:06
To: TechNet E-Mail Forum; Peter Swanson
Subject: RE: [TN] NEW! DUAL-CURET 9481 ELECTRONIC CONFORMAL COATING
Hi Peter,
Can you compare it with the 1B31?
Best Regards
Reuven ROKAH
e mail: [log in to unmask]
P Think green before printing this mail... Thanks
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Peter Swanson
Sent: Thursday, September 18, 2008 11:40 AM
To: [log in to unmask]
Subject: Re: [TN] NEW! DUAL-CURET 9481 ELECTRONIC CONFORMAL COATING
DYMAX 9481 is a single part acrylated urethane conformal coating. It has
a secondary moisture cure mechanism (a bit like the cure mechanism of a
single part RTV silicone) for those areas which are in shadow to light.
The primary cure mechanism is still UV/visible light.
Traditional UV acrylic conformal coatings had a secondary thermal cure,
so that's what makes this product new - if a secondary cure is required,
there is no need to add heat, the moisture cure just happens over time.
There are similar products from other vendors. This type of chemistry is
a valid choice to evaluate for your coating requirements, but much
depends on board geometry, application methods, requirements of cured
material, etc.
Regards,
Peter
--------------------------------------------------------
Peter Swanson [log in to unmask]
INTERTRONICS http://www.intertronics.co.uk
Tel: +44 1865 842842 Oxfordshire, England
INTERTRONICS is dedicated to providing quality material, consumable and
equipment solutions to the high technology, high performance assembly
industries, incorporating outstanding levels of technical support and
customer service.
Read our news! http://www.intertronics.co.uk/blog/blog.htm
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Leigh-Ann Litavis
Sent: 18 September 2008 01:10
To: [log in to unmask]
Subject: [TN] NEW! DUAL-CURE(tm) 9481 ELECTRONIC CONFORMAL COATING
Hi Technetters,
Can anyone give me some information on this new Dynmax material? Has
anyone used it? How does it compare to other UV materials that are out
on the market today?
Thank you,
?LeighAnn Litavis
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