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Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
Materials Of Storage
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Materials Of Storage

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Lecture for Week 6 of ENGI/HUMA 240: Engineering Design for Art and Artifact Conservation

Lecture for Week 6 of ENGI/HUMA 240: Engineering Design for Art and Artifact Conservation

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  • Transcript

    • 1. Materials of Storage<br />ENGI/HUMA 240<br />Matthew Wettergreen, PhD<br />
    • 2. Overview<br />Materials – Engineering focus<br />Properties of Materials<br />Engineering focus<br />Conservation & Storage Focus <br />Properties of Conservation & Storage Materials<br />Desirable properties<br />Ideal materials<br />Materials to stay away from<br />
    • 3. Engineering Materials<br />Engineers are interested in the material properties of objects, how they interact with the environment and how they degrade<br />Full characterization of these materials is required because they may be subjected to any number of conditions<br />Heat<br />Humidity<br />Chemical environments<br />
    • 4. Use of Engineering Materials<br />No one material will have all the desired properties<br />Most materials will have a mix of these properties<br />As engineers we can create a matrix of characteristics <br />A balancing act is required between what you have and what you need<br />
    • 5. Properties of Materials - Engineering<br />When we are researching materials to use for a design project, what are some of the properties that we wish to look at?<br />Structure<br />Characterization<br />Processing possibilities<br />Properties<br />Performance<br />
    • 6. Standard Engineering Materials Properties<br />Electrical properties<br />Charge<br />Chemical properties<br />pH<br />Physical or architectural properties<br />Open celled vs. close celled<br />Transparency<br />Mechanical properties<br />Strength / Stiffness<br />Ductility<br />
    • 7. Conservation Material Properties<br />In the world of conservation our materials need not be characterized as fully<br />Conservators are not interested in: <br />Crystallinity<br />Atomic structure<br />Thermal expansion<br />Density (quantitative)<br />Conservators are more interested in more general qualities:<br />Physical properties<br />Mechanical properties<br />Aesthetic properties<br />
    • 8. Materials for Conservation<br />Conservators are mainly concerned with the following questions:<br />Will the material physically protect the object?<br />Will the material affect the object chemically?<br />Will the material shield the object?<br />
    • 9. Desirable Properties<br />Low weight<br />Does not interact with surface of artwork<br />Shields against light<br />Non-flammable<br />Water resistant<br />Does not degrade<br />Does not support organic growth<br />Cushions against shock/vibration<br />
    • 10. The question of pH<br />Storage materials are in in direct contact with art objects<br />pH neutral is required<br />Low pH can discolor objects<br />Low pH can accelerate degradation<br />Low pH can support organic growth<br />
    • 11. Closed Cell vs. Open Cell<br />Closed Cell<br />Open Cell<br />Advantages<br />Higher cushioning<br />Disadvantages<br />Closed cells may contain undesirable chemicals<br />Advantages<br />All chemicals leached<br />High interconnectivity<br />High moisture absorption<br />Disadvantages<br />Structurally weaker<br />Lends to breakdown of material<br />
    • 12. Translucent vs. Transparent<br />Translucent<br />Advantages<br />Protects object from light damage<br />Disadvantages<br />visibility<br />Transparent<br />Advantages<br />Does not obscure object while in storage<br />Disadvantages<br />Does not protect object from light damage<br />
    • 13. Types of Materials for Conservation<br />Wraps<br />Tyvek<br />Glassine<br />Bubble wrap<br />Foams<br />Ethafoam<br />Volara<br />Natural Materials<br />Cloth<br />Paper<br />Rigid Materials<br />Wood<br />
    • 14. A Note on Desirable Polymers<br />Polyethylene<br />Many molecular strengths<br />High molecular weight, low, ultra-high<br />Several forms<br />Sheets, rolls, films<br />Very desirable properties<br />Smooth, inert, translucent, chemically resistant<br />
    • 15. A Note on Undesirable Polymers<br />Polystyrene<br />Several forms<br />Sheets, rolls, foams<br />Foams created with blowing agents<br />Residuals may offgass into storage<br />Increase the flammability of the styrofoam<br />Trace chemicals exist which can damage artwork<br />Very undesirable properties<br />Carries charge, offgasses, trace chemicals<br />
    • 16. Foams<br />
    • 17. Ethafoam<br />Polyethylene foam<br />Uses<br />Packaging, gaskets, barriers<br />Always inert<br />Nontranslucent, gray, black<br />pH neutral<br />Not clear (gray, black)<br />Susceptible to UV degradation<br />Recyclable<br />High strength, <br />impervious to mold, rot, bacteria<br />lightweight<br />
    • 18. Volara<br />Closed Cell PE<br />Uses<br />Lining for display cases<br />Varying densities<br />Nontranslucent, white<br />Water retention can promote organic growth<br />Recyclable<br />Nonabrasive, chemical resistance,<br />Water absorption qualities<br />Advantages<br />Disadvantages<br />
    • 19. Wraps<br />
    • 20. Tyvek Soft structure 1443-R <br />HDPE<br />Uses<br />Lining cavities on foam pads<br />Dust cover<br />Always inert (UV, oxi)<br />Translucent, white<br />Recyclable <br />pH neutral<br />Allows transmission of moisture<br />Degraded by Freon, pine oil, toluene<br />Lightweight, non-abrasive<br />Tear resistant<br />Water resistant but still vapor permeable as it &quot;breathes&quot;<br />Advantages<br />Disadvantages<br />
    • 21. Tyvek 1025 - Hard Structure<br />HDPE<br />Uses<br />Wrapping<br />support for transport/storage<br />Always inert (UV, oxi)<br />Translucent, white<br />pH neutral<br />Allows transmission of moisture<br />Not a good barrier to plywood off-gassing<br />Mold/mildew resistant<br />Lint-free, acid-free<br />Allows transmission of moisture<br />Recyclable<br />Advantages<br />Disadvantages<br />
    • 22. Bubble Wrap<br />Polyethylene, PVC<br />Uses<br />Large bubble for sculptures and packing crates<br />Antistatic pink double bubble for framed works<br />Cushioning, good for corners and general padding use<br />Translucent<br />Not for use in direct contact with object<br />Bubbles deflate over time<br />Bubbles leave pattern on object<br />Recyclable<br />flexible, can be double layered, inexpensive<br />tear resistant<br />
    • 23. Organic<br />
    • 24. Cotton<br />Natural material<br />Uses<br />Liner for foam padding<br />Cradling delicate surfaces<br />Multiple forms<br />Straps, sheets, felt<br />Multiple strengths<br />Non-aligned, aligned fibers<br />Translucent, natural color<br />Natural materials can support organic growth<br />Absorbs liquids and humidity<br />Natural materials<br />Soft surface will not cut other objects<br />
    • 25. Glassine<br />Paper product<br />Uses<br />interleaving prints, photographs, drawings<br />wrapping and packaging<br />Translucent, off-white<br />pH neutral<br />Creases easily<br />Unstable<br />Not always lignin free<br />Tears easily<br />Acid free<br />Recyclable<br />Inexpensive<br />Advantages<br />Disadvantages<br />
    • 26. Acid Free Tissue Paper<br />Archival non-buffered acid free tissue<br />High alpha cellulose<br />pH neutral<br />Uses<br />interleaving, wrapping, cushioning<br />padding for textiles<br />Advantages<br />Disadvantages<br />
    • 27. New materials<br />
    • 28. Silicone<br />Si based polymers <br />Largely inert and easily functionalized<br />Uses<br />Cushioning objects<br />Encasing objects<br />Translucent and nontranslucent<br />pH neutral<br />Degrade over time if not crosslinked fully<br />Easy to trap particles inside<br />Requires technical training to mold<br />Inert<br />Chemically easily customizable<br />Moldable to custom shape<br />
    • 29. Additional Resources<br />Packing Art handling and Crating Information Network (PACIN, http://pacin.org)<br />Dow Ethafoam (http://www.qualityfoam.com/ethafoam.asp)<br />

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