Heritage collections, to pay attention to the following factors:
First, the temperature and humidity. High temperature (38 ℃) or too low will lead to cultural change in texture, speed up all kinds of harmful chemical impurities on the destruction of relics made of materials; the temperature is too low to make objects in the water will produce ice knot, resulting in its internal structure was damaged, affecting the durability of the material made collections. Too wet or too dry on the painting and calligraphy, ancient books, leather, Bamboo and Wood a greater impact. Therefore, collections storage warehouse, showroom of the temperature and humidity control and regulation of collections to protect a very important technology in the content.
The second is light. Light has a certain energy, the energy of different substances in a certain light irradiation induced chemical changes, which were destroyed, paper, textiles and other specimens become brittle, less elastic, yellow, fade, so lacquerware, wrinkling, cracking or spalling. As the UV energy large artifacts made of materials make pigment composition in chromophore destruction, which led to fade. Therefore, all collection of anti-UV light focused on the damage.
Third, the harmful gas. Although the collection of harmful gases damaging effects in normal circumstances is relatively slow, not easily visible, but it does day in and day made of materials that affect the durability of the collection. There is damage to the collection of gases, including ozone, sulfur dioxide, hydrogen sulfide, chlorine and so on.
Fourth dust. Dust falls on the various types of objects, clear the cause mechanical damage when the scratches; dust, microbes, parasites proliferate in the cover are encountered for the temperature and humidity will destroy cultural relics; dust suspension will carry a large number of industrial particles will fall on the surface of the accelerated corrosion of metal artifacts; dust in general can Absorption of chemical impurities in the air with a pH in the paper goods, then, writing on paper and destructive effect, when the humidity , they will dip the paper itself, the internal damage to the artifacts; in the dust, often contain clay, easily bonded with the paper type of heritage.
Fifth microorganisms. Hazard collection of microorganisms, mainly bacteria and fungi. Usually we see the ancient calligraphy and painting, embroidery, wood, plant specimens and other moldy, rotten is the result of microbiological hazards.
6 is a pest. Insects on the paper, calligraphy, ancient books, lacquer, wood, bamboo, silky cotton fabric, leather and other cultural artifacts are harmful, such as sweaters fish, tobacco A, book lice, short nose and wood, as such; mice heritage destruction of organic matter, mainly using its sharp teeth bite, causing irreparable damage, while it also can cause discharge collection and environmental pollution.
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