There are many kinds of natural stone used for architectural decoration. According to its basic properties, it can be divided into two categories: marble and granite. Although marble and granite are densely structured, they have natural micro-cracks and certain pores, making them breathable and water-absorbing. In the process of stone mining, processing, handling and paving, its physical and chemical properties are more or less damaged, and the combination of sun, freezing, wind erosion and acid rain causes the stone to be polluted and corroded, forming water spots, Rust spots, Baihua and other stone diseases. In the process of stone care, if you know the cause of stone lesions, you can compare the intuitive medicine to the effective stone conservation, 365 stone net is the analysis of the causes of stone lesions, the specific classification of the following three
(1) Physical damage: including freeze-thaw damage and crystallization damage. Freeze-thaw damage means that rainwater, condensed water or groundwater enters the interior of the stone through cracks and capillary holes. When it freezes and freezes, the volume expands and the stone breaks and breaks. Crystallization destruction means that the salt-soluble substance dissolved in water penetrates into the interior of the stone by the lifting action of the capillary. Under the dry condition, the salt component is crystallized, and the pressure generated by the expansion of the crystal causes the surface of the stone to fall off in a powder form or a scale. Under the action of dry and wet alternating, the crystallization damage is intensified.
(2) Chemical corrosion: The occurrence of diseases such as rust, water marks and Baihua is caused by chemical reaction and stone contamination or weathering.
(3) Microbial destruction: Some microorganisms will grow on the wet stone. The microorganisms not only damage the appearance of the stone, but also make the stone discolored. Some products of its metabolism, such as lichenic acid, will erode the stone and its binder. Certain biological enzymes cause the aluminosilicate to release cations, which are destructive to microbial degradation. Microbial destruction accelerates several other destructive effects.
Dispersant Agent mainly for textile industry.
Mainly used to coloring for vat dyes, reactive dyes, acid dyes, acid staining pad or pigment pad dyeing of the dispersing agent, as a auxiliaries for vat dyes's powder or sizing agent. Also used staining to levelling agent and auxiliary tanning agent in leather industry. Can also be used for textile printing and dyeing, pesticides as dispersing agent, papermaking, electroplating additives, latex, rubber, construction, water-soluble paint, pigment dispersant, oil drilling, water treatment agent, carbon black, printing ink dispersant.
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