Nano silica spray dryer

Published on October 19th, 2016

Nano silica dryer, nano silica drying equipment, nano silica dryer, nano silica drying equipment, nano silica special dryer, nano silica spray dryer. Changzhou Xinke Drying Equipment Co., Ltd. www.xkdry.com

Changzhou Xinke Drying Equipment Co., Ltd. specializes in productionHollow blade dryer, sludge dryer, disc dryer, disc dryer, airflow dryer, boiling dryer, belt dryer, flash dryer, vibrating fluidized bed dryer, vacuum dryerWww.xkdry.com

Nano silicon dioxide, also known as white carbon black, is an inorganic chemical material. As a result, the size of the ultra-fine nanometer is in the range of 1~100nm, so it has many unique properties, such as the optical performance against ultraviolet rays, which can improve the aging resistance, strength and chemical resistance of other materials. It has a wide range of applications. Nanoscale silica is an amorphous white powder that is non-toxic, odorless, and pollution-free. Its microstructure is spherical, with a quasi particle structure of flocculent and mesh like. Its molecular formula and structural formula are SiO2, and it is insoluble in water

Main purpose
Nano silica has a wide range of applications, often added at a weight of 0.5-2%, and some product systems can reach more than 10%. The key to reflecting product performance is to fully separate it into the system. According to the different systems used, nano silica is separated in advance in water, acetone, alcohols, or other solvents. For oily systems, auxiliary agents can be used for pretreatment. Mainly used in the following fields,
(1) Electronic packaging materials
By fully separating the surface active treated nano silica into the organic silicon modified epoxy resin encapsulation adhesive matrix, the curing time of the encapsulation material can be significantly shortened (2.0-2.5 hours), and the curing temperature can be lowered to room temperature, resulting in a significant improvement in the sealing performance of the device and an increase in its lifespan.
(2) Resin composite material
Fully and uniformly separating nano silica particles into resin materials can comprehensively improve the performance of resin based materials. Including: A increases strength and elongation; B enhances wear resistance and improves the surface smoothness of materials; C Anti aging performance.
(3) Plastic
The use of nano silica can make the plastic become more compact due to its light transmission and low particle size. After adding silica into the polystyrene plastic film, its transparency, strength, toughness, waterproof performance and anti-aging performance can be improved. By using nano silica to modify ordinary plastic polypropylene, its main technical indicators (water absorption, insulation resistance, residual deformation under compression, flexural strength, etc.) have reached or exceeded the performance indicators of engineering plastic nylon 6.
(4) Paint
It can improve the poor suspension stability, poor thixotropy, poor weather resistance, poor washability, etc. of the coating, greatly increase the bonding strength between the coating and the wall, increase the hardness of the coating, and improve the surface self-cleaning ability.
(5) Rubber
Silica is known as white carbon black. After adding a small amount of nano-SiO2 into ordinary rubber, the strength, wear resistance and aging resistance of the product all reach or exceed that of large rubber products, and the color can be kept unchanged for a long time. The nano modified colored EPDM waterproof coiled material has obvious wear resistance, tensile strength, bending resistance, aging resistance, bright color and excellent color retention effect.

(6) Color (dye) materials
The surface modification of organic pigments (dyes) by adding nano SiO2 not only increases the anti-aging performance of pigments (dyes), but also increases the brightness, hue, saturation and other indicators at a certain level, greatly expanding the grade and application range of organic pigments (dyes).
(7) Ceramics
Replacing nano A1203 with nano SiO2 can not only serve as a nano particle, but also as a second phase particle, which can enhance the strength, toughness, hardness, and elastic modulus of ceramic materials,.
By utilizing nano SiO2 to composite ceramic substrates, the density, toughness, and smoothness of the substrates have been improved, and the sintering temperature has been significantly reduced.
(8) Sealing glue, adhesive
The addition of nano SiO2 coating a layer of organic material on its surface creates a network structure, producing a silica structure that is hydrophobic, can inhibit colloid flow, accelerate curing speed, enhance bonding effect, and increase the sealing and anti-seepage properties of the product.
(9) Fiberglass products
Nanoparticles form grafting and bonding interactions with organic macromolecules, increasing the toughness, tensile strength, impact resistance, and heat resistance of the material.
(10) Drug carrier
The use of nano SiO2 as a carrier can achieve good sustained release effect.
(11) Cosmetics
Nano SiO2 is an inorganic component that is easy to mix with other components in cosmetics. It is non-toxic, odorless, and white in color. It has strong UV reflection ability and good stability. It does not decompose or change color when exposed to UV radiation, nor does it react chemically with other components in the formula. It lays a good foundation for the upgrading of sunscreen cosmetics.
(12) Antibacterial materials
By utilizing the high specific surface area, porous structure, strong adsorption capacity, and unique physicochemical properties of nano Si02, functional ions such as silver ions are uniformly designed into the mesopores on the surface of nano Si0X. This results in the development of highly effective, long-lasting, temperature resistant, and broad-spectrum antibacterial nano antibacterial powder, which can be widely used in industries such as bills, medical and health care, chemical building materials, household appliances, functional fibers, and plastic products.

1Working principle of spray dryer
centrifugal spraydrying equipmentIts working principle is that the air enters the air distributor at the top of the centrifugal spray dryer through the filter and heater, and the hot air enters the dryer evenly in a spiral shape. The material liquid is sent to the centrifugal atomizer at the top of the dryer through the filter and pump in the material liquid tank, causing the material liquid to spray into extremely low mist droplets. The material liquid and hot air come into contact in parallel, and the moisture evaporates rapidly, drying into finished products in a very short time. The finished products flow out through the bottom of the drying tower and the cyclone disperser, and the exhaust gas flows out through the fan.