Silica gel: magic Kong Sha-Iota

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News > Dynamic industry > Silica gel: magic Kong Sha

Silica gel: magic Kong Sha

When you open a new dress or a home appliance, it always lies in a few white bags. As we all know, this is a desiccant, but not much attention to it, but it does play a very big role in our daily life. Dehumidification, filtration, preservation, which makes our food to maintain freshness, let the clothes is not easy to mildew, so that the appliance is not easy to damp, a few small package desiccant is solved the biggest enemy in storage and transportation of goods.
In fact, in addition to the iron powder, the vast majority of desiccant are silica gel, silica gel seems to be a transparent entity, but its structure has a myriad of only a few nanometers in size, has the role of adsorption, and non-toxic tasteless, so it is widely used in food, clothing, precision instruments and other industries.
When it comes to silica gel, except for a great affinity for water molecules to absorb moisture, there are more wonderful powers.
People always have a kind of such cognitive, supermarkets sell a translucent crystal peanut oil must not pure squeezed, because their own squeeze peanut oil always shining white very muddy, very heavy. In fact, this is a misunderstanding, in order to beautiful, peanut oil sold in supermarkets are after the adsorption, using silica gel adsorption principle, the peanut oil in the floc adsorption, the silica particle filtering, peanut oil will become translucent. Bottled beer brewed and puree brightness is not the same, this is also why.
Depending on the size of the silica gel, can be used to adsorb the size of different molecules, so the industrial gas separation is achieved by silica gel.
Furthermore oil and natural gas from the underground, undersea mining out, with a large amount of water, oil companies will first with Alusil most of the water vapor adsorption out, to save the refining process of energy consumption.
In addition, silica gel can also be used as an agent and an opening agent. Is the powdered silica matting agent added to the paint, formed a matte paint surface of furniture, piano. As for the opening agent, we have experienced the opening of plastic bags because it is very difficult to open the static electricity, so the production of plastic bags with silica gel powder, you can eliminate static electricity, easy to open. These are the products of silica gel.
Silica sol:
From the rough notebook, to the shiny sea newspaper, and then to be able to reflect the photo paper, we have to get high as observed under the microscope, if the notebook paper like a mountain, then the picture is quite plain. This is a credit to the silica sol, the small molecules of silica sol can will fill the surface gully, the surface becomes smooth, then cover the top film made photo paper.
In addition to the silica sol filled function, and bonding effect. Like a model of high temperature sand, the loose sand is used silica sol to briquetting, because silica sol is high temperature resistant, so even if is molten stainless steel also can use this model to shaping. In addition, silica sol can also be used as a battery, dyeing cloth, precision parts manufacturing etc..
Chemical and everyone is not far away, it exists in our side, we are every day to deal with friends.
Chemical pollution:
Some people ask, chemical products in the clothes, the content of our close contact with the paper, more even in the food production, we are not hurt much?
In fact, the chemical is not as terrible as people think, and then take silica gel and silica sol. The main ingredients of silica gel are silica (SiO2), silica sol is also the nano silica particles in water or solvent dispersion. As is known to all, very stable chemical properties of silica (SiO2), crystal, quartz stone, sand, etc. the main component is silicon dioxide, in addition to alkali, hydrofluoric acid and silicon dioxide doesn't react with any of the material, so it is very safe, so they are used for various industries.
In addition, the production process of silica gel has reached no pollution production. The production of silica is the main raw material of sulfuric acid and sodium silicate (sodium silicate). The two phase reaction, sodium sulfate sodium sulfate in the replacement out, then the formation of sodium sulfate and silica, in the washing water of sodium sulfate (a kind of soluble in water salt) with water washing, the automatic gel of silica was filtered out. Wash away the salt solution can be directly discharged into the sea after neutralization, so most of the silica gel is built by the sea.
In addition, due to the adsorption of micro pores, silica gel can also be used as drug delivery agents, because the tablet is not all drug ingredients, which is a special silica gel powder as a carrier and a slow release agent. Thus, the safety of silica gel is confirmed.

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