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Currently many laboratory used nanomaterials, companies also began to apply paint to the Silicon Dioxide powder coatings. Mainly to improve the insulation performance. China is doing very little technical content, because of the high cost and the current market demand is not thermal insulation and fire prevention, but the future is promising. Have more technical content of the domestic high-tech companies to do is silica airgel, a nano is there is a ALISON.

Overall, almost none company  can be applied Silicon Dioxide aerogels in the country of basically, because it is expensive, it is also a successful incorporation into the paint, but also requires a certain scientific research strength. Domestic SMEs temporarily incompetent, or that most companies did not adhere to study it. However, I believe there will soon be out of related applications.Rats receiving silica flour, powdered sand or magnesium trisilicate orally in large amounts were shown to have crystals of these substances in uninflammated myocardium. Entry was via the intestinal epithelium. Using histochemical techniques lysosomal damage was demonstrated in macrophages which had ingested silica particles.  Administration of 5 g of the siliceous materials listed below in  20 ml of milk by stomach tube to cats showed the following urinary excretion within 120 hours; silicic acid (fresh) 43.3, calcium silicate 37.2, magnesium trisilicate 34.1, silicic acid (moist) 29.0,SiO2 (quarz) (air sediment very fine) 20.8, magnesium silicates (talc) 9.2, diatomaceous earth 8.8 and calcium silico aluminate hydrate (kaolin) 7.6 mg SiO2.

From this it can be observed that free Silicon Dioxide is attacked to a variable extent depending on its physical and chemical condition. Several silicates are apparently unattacked, as nontreated animals excreted an average of 8.6 mg in 120 hours. Some complex silicates appear to suffer partial decomposition by the  hydrochloric acid of the stomach, with partial solution of some of the products in the intestine.  "Quarz water" (water in which silicic acid had been dissolved as a result of contact with quarz powder) given to rats over a prolonged period as the only source of liquid intake did not show any SiO2 storage in tissues.


 

 

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