I am posting this on behalf of someone who is not on the listserve.
It pertains to the discussion, a few weeks back, regarding Corrosion
Intercept.
Sue Maltby, Conservator
Maltby & Associates Inc.
Adjunct Faculty, Museum Studies Programme/Faculty of Information
University of Toronto
174 Spadina Ave. # 602
Toronto, Ontario
M5T 2C2
Canada
416-921-2877
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Corrosion Intercept(R) is a polymer that has Copper catalyzed into the
structure. The Copper is bound to the ends of the polymer chains
providing a torturous path to atmospheric pollution by reacting with
and permanently neutralizing all atmospheric gases that react with
Copper. The Copper used is small particulates, less than 1/5th the
width of a human hair, and by reacting the Copper to the polymer you
isolate the copper particles, which prevents agglomeration and
prevents the Copper from forming a continuous or contiguous film or
sheet of Copper. It is only with direct contact to a mass of Copper
that you see interactions between a material being protected and
Copper - since we do not have that continuous mass, we have no
reactions. We have substantial data (25 years of real life data and
accelerated testing) confirming this. The Intercept film can turn
green from reactions with humidity and the corrosive gases, but we
have never seen the material being protected damaged; be it wood,
metal, leather, fabric or other materials of construction.
Furthermore, the Copper has a thin, porous coating of polymer over it
which also prevents direct contact with what is being protected.
Intercept was evaluated by one of the leading Japanese museums
recently,again passing PATtesting. Intercept will not contaminate
objects (Intercept has novolatiles and no measurable Non-Volatile
Residue or NVR). Intercept has passed NASA testing for space
flight (ionic and particulate contamination) and has not shown to
negatively react with any metal, fabric, organic or other materials.
Recent testing with LSU in Baton Rouge shows that Intercept
effectively deterred termites during a 6 month plus test in which
wood was wrapped in Static Intercept and buried in 3 different known
termite mounds in New Orleans. Reports on this will be published in
a peer review journal in the near future. In short, Intercept
provides many layers and levels of protection with no risk of
contamination or reaction with the materials being stored inside.
More information can be found at www.InterceptTechnology.com
Keith Donaldson
Engineered Materials, Inc.
Phone: +1-847-821-8280
Cell: +1-847-612-3986
Fax: +1-847-821-8260
email: [log in to unmask]
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Date: Wed, 9 Oct 2013 11:40:28 -0700
From: David Harvey <[log in to unmask]>
Reply-To: Museum discussion list <[log in to unmask]>
Subject: Re: Corrosion intercept pouches for multi-material items?
To: [log in to unmask]
Stephanie,
Corrosion intercept uses a scavenger impregnated into the polyethylene bag
matrix to absorb atmospheric pollutants. Usually it's a copper based
chemical. My concern, as a conservator, for composite objects, would be
maintaining the appropriate relative humidity for the organic components
such as wood, leather, textile, or ivory. Also since organometallic
corrosion between leather and copper alloys occurs by being in physical
contact with each other, storing in corrosion intercept bags would not stop
that problem.
Cheers!
Dave
David Harvey
Senior Conservator & Museum Consultant
Los Angeles CA
www.cityofangelsconservation.weebly.com
On Oct 9, 2013 11:25 AM, "Stephanie Skiles" <[log in to unmask]>
wrote:
[Hide Quoted Text]
Hello All,****
** **
This relates slightly to Kate McCarthy's question about the waxy green
buildup between metal and leather elements... ****
** **
Our museum just purchased several "corrosion intercept pouches" for metal
swords in our collection. Here's a link to the pouches on University
Products, if you are curious:
http://www.universityproducts.com/cart.php?m=product_list&c=75****
** **
We accidentally ordered too many of the pouches, and so we thought we
could also use them for multi-media objects, such as horse tack that
includes leather elements. Has anyone out there used these pouches on
items which contain metal and leather or other non-metal materials? If so,
did the pouch adversely affect the non-metal materials at all? ****
** **
Advice is greatly appreciated. Thank you!****
** **
Stephanie Gilmore****
Anthropology Registrar****
University of Colorado Museum of Natural History****
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