Hydrophobic Fumed Silica Sio2

• Grade Standard: Food Grade
• Quality: First Class
• Transport Package: Bags
• Specification: 10KG/Bag
• Trademark: czhontech
• Origin: China
• Model NO.: BY-202N
• HS Code: 2811229000
• Production Capacity: 60000 Ton/Year

Product Description

Hydrophobic fumed silica
 

Product Parameters

 

Item No	characteristics	properties	Properties	Unit	Typical Value	Applications
BY-202N	BY-202N is surface-treated fumed silica with active silanol group modified by special silane.	Improve electrostatic effect of product system	Specific surface area, BET	m2/g	170±20	Toner & Coatings
			PH value in 4% dispersion	/	≤11.0	Anti-corrosive Coatings
		Improve thickening, thixotropic and rheological properties in different systems	Loss on drying @ 105ºC×2h	wt.%	≤4.0	Grinding of Copper Products Water-based inks & water-based paints
		Improve compatibility and stability of  polyurethane system and mechanical properties of epoxy resin system Strong electric potential stability, improve wettability in various product systems	Loss on ignition @ 1000ºC×2h	wt.%	≥1.0
			SiO2   Content, based on ignited material	wt.%	≥99.8
			Carbon Content	wt.%	1.0-2.0

 

Application

Fumed silica is the material of choice for adhesive and sealant modification. The addition of fumed silica to silicone sealants and adhesives significantly increases bond strength and ensures free flow, prevents caking and sags during cure, slumps, sags, maintains clarity, reinforcement, shear resistance Cut etc. Its mechanism of action is that when it is dispersed in sealants and adhesives, hydrogen bonds are formed between different particles through the silanol groups on their surfaces to form a silica aggregate network, which limits the fluidity of the system and increases the viscosity. To thickening effect; under the action of shear force, the silica network is destroyed, resulting in a decrease in the viscosity of the system and a thixotropic effect, which is convenient for construction. Once the shear force is removed, this network structure can be re-formed, effectively preventing the compound from sagging during curing.

Adding a small amount of fumed silica to the unsaturated resin can give the resin excellent transparency and excellent physical properties, and improve the quality of downstream products.
In the gel coat resin, the addition of fumed silica can improve its thixotropy, so that the resin has good tensile strength, bending resistance, water resistance, heat resistance and other properties, thereby prolonging the service life; in thixotropic resin, gas phase The addition of silica can give it excellent thixotropic properties and reduce the flow and dripping during use; in the putty, fumed silica can be used as an anti-settling agent, with excellent anti-settling effect and excellent performance. Thixotropic properties.
Fumed silica is the material of choice for adhesive and sealant modification. The addition of fumed silica to silicone sealants and adhesives significantly increases bond strength and ensures free flow, prevents caking and sags during cure, slumps, sags, maintains clarity, reinforcement, shear resistance Cut etc. Its mechanism of action is that when it is dispersed in sealants and adhesives, hydrogen bonds are formed between different particles through the silanol groups on their surfaces to form a silica aggregate network, which limits the fluidity of the system and increases the viscosity. To thickening effect; under the action of shear force, the silica network is destroyed, resulting in a decrease in the viscosity of the system and a thixotropic effect, which is convenient for construction. Once the shear force is removed, this network structure can be re-formed, effectively preventing the compound from sagging during curing.
In heat-set offset printing inks, the use of hydrophilic fumed silica can speed up the drying speed of the ink and reduce the phenomenon of smudging and blurring of the ink; in offset printing inks, the use of hydrophobic fumed silica , can reduce the water absorption of the ink, eliminate foam, improve the depth of the ink without affecting its surface gloss; in gravure printing, flexographic printing and silk printing, the use of fumed silica can adjust the viscosity and prevent pigment sedimentation; fumed dioxide Silicon can also be used to control the flow of printer ink, control the fluidity of ink to obtain clear printing; it can be used as a dispersant and flow control agent in the toning of ink cartridges in copiers and laser printers.

Our advantage

Customer Complaint	0%
In-time shipment rate	98%
Recipe customization	Support
After-sales service	Support
Free samples	Available
Flexible payment methods	Support

 

Company Profile