Silica gel
Silica gel (also known as blue gum) is highly active adsorption material with pore silica-based materials made through the deep processing of high value-added and high technology content of instructions based adsorbent, desiccant adsorption of a high grade is implementation of the national industry standard, "Blue plastic indicator and silica gel" HG/T2765.4-1996.
This product is a common method of production at home and abroad from pore silica gel (pore size 2-3nm, surface area of 600 square meters / g, using the spectrum of science and technology Beijing Gold Egyptian production of automatic F-Sorb 3400 test to measure the surface area and pore size ) as the carrier, cobalt chloride (formula: CoCl2) through some combination of process steps within the pores in the silica gel surface. Product main feature is that it has pore silica gel medium (such as air or industrial gases) in strong adsorption of water vapor, while cobalt chloride through the crystal water contained in the number of changes shown in different colors, that is, by the moisture before the moisture content increased with the blue gradually turned into light red.
Silica gel indicator standard (enterprise standard) and the blue gel indicator (industry standard) Specifications comparison.
Blue rubber production in China more than 6,000 tons, of which exports 70% -80%. Earned about 800 million U.S. dollars. Silicone products accounted for 30% of export earnings. With the strengthening of people's environmental awareness, pollution of certain chemical products harm the environment more and more caught the attention now, for the manufacture of silica gel of cobalt chloride has been polluting the environment in Western countries as carcinogens. China is the world's major countries exporting silica gel, whether in the short term research and development of a new generation of silica gel to eliminate contamination of cobalt chloride to maintain the status of major exporting countries, is currently very important issue. Xin, Shandong Institute of Technology staff of the company after more than six months of trial and error, exploring new ways to produce silica gel, pilot production of a new generation of silica gel with cobalt chloride-based products compared with the color change at the same time, under different relative humidity in adsorption capacity than silica gel produced cobalt chloride significantly increased, while production costs have decreased, the production of silica gel at home and abroad is a big breakthrough. |
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