Difference between pages "Medex" and "Blister copper"

From CAMEO
(Difference between pages)
Jump to navigation Jump to search
 
 
Line 1: Line 1:
 
== Description ==
 
== Description ==
  
[Roseburg] [https://www.roseburg.com/Product/medex/ Medex®] A brand name for a moisture resistant, medium-density [[fiberboard]] (MDF) that is made from cellulosic fibers bonded with a polyurea-isocyantate resin, then compressed into a hardboard. Medex is waterproof, smooth, heavier than plywood and slightly acidic (pH=5.5). Medex® uses a formaldehyde-free adhesive but the wood fibers may still emit small amounts of organic acids such as acetic acid. Medex® is sustainable using a 100% post-industrial recycled wood fiber.
+
An intermediate product in [[copper]] smelting. Blister copper is formed when [[copper sulfide]] ore has been incompletely reduced to metallic copper.  It is approximately 96-99% pure copper and is riddled with bubbles due to escaped [[sulfur dioxide]] gas during solidification.
  
==Synonyms and Related Terms==
+
== Synonyms and Related Terms ==
  
== Applications ==
+
blinding; cobre "blister" (Port.)
Medex® is commonly used as a structural material for pedestals, display decks, display panels and risers.
 
  
== Risks: Personal ==
+
==Resources and Citations==
Produces fine wood dust. Potential eye and respiratory irritant. Dust should be collected by suction cleaning equipment.
 
  
Medex SDS [https://www.roseburg.com/Product/medex/]
+
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
  
== Risks: Environmental ==
+
* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988
  
== Risks: Collections ==
+
* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
  
{| class="wikitable"
+
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
|+ Acetic acid emitter
 
|-
 
! Collection Material
 
! Risk
 
|-
 
| Pb, Zn, Cd metals
 
| Corrosion
 
|-
 
| Calcium based objects (limestone, shell, coral, pearl)
 
| Efflorescence
 
|-
 
| Some color photographs
 
| Fading
 
|-
 
| Pb glazed ceramics
 
| Efflorescence
 
|-
 
|}
 
  
The risks of organic acids to collections can be mitigated by using barrier materials.
 
  
== Working Properties ==
 
* Standard wood product finishing processes. Medex® can be painted, stained, laminated, veneered or covered with display fabric.
 
* Readily accepts and holds hardware including staples, screws, other wood fastening hardware. Ideal for pressure fitting mounts.
 
  
==Forms/Sizes==
+
[[Category:Materials database]]
* Panels available in 4' and 5' widths and lengths up to 18'.
 
* Thicknesses ranging from 3/8" - 1 and 1/4".
 
 
 
==Additional Information==
 
'''Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below'''
 
* [http://www.conservation-wiki.com/wiki/Oddy_Test_Results:_Case_Construction_Materials#Medex0001 MDF Wood, IMA 2016]
 
 
 
==Sources Checked for Data in Record==
 
* The [https://www.roseburg.com/Product/medex/ Medex® webpage] on the Roseburg manufacturer's website contains links to technical data sheets, safety data sheets and other technical information (accessed 10/2019)
 
 
 
[[Category:Materials database]][[Category:MWG]][[Category:Designer/Fabricator]]
 

Latest revision as of 16:07, 8 May 2022

Description

An intermediate product in Copper smelting. Blister copper is formed when Copper sulfide ore has been incompletely reduced to metallic copper. It is approximately 96-99% pure copper and is riddled with bubbles due to escaped Sulfur dioxide gas during solidification.

Synonyms and Related Terms

blinding; cobre "blister" (Port.)

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Henry Hodges, Artifacts: An Introduction to Early Materials and Technology, Ronald P. Frye, Kingston, Canada, 1988
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998