Hydrophbic Fumed Silica Nano Particle Silica Powder

• CAS No.: 112945-52-5
• Formula: 238-878-4
• EINECS: 238-878-4
• Classification: Silicon Dioxide
• Grade Standard: Industrial Grade
• Kind: Alkaline Oxide
• Quality: First Class
• Transport Package: Kraft Paper Bag
• Specification: 20kg
• Trademark: Zhonghai
• Origin: Shandong
• HS Code: 2811229000
• Production Capacity: 20000 Tons Per Year

Product Description

Technical Parameter:
 

Type	ZH-135	ZH-151	ZH-152	ZH-630
Silica Content % (Based on ignited material)	≥99.8	≥99.8	≥99.8	≥99.8
PH value in 4% dispersion	7.0~8.5	3.7~4.5	3.7~4.5	5.5~8.0
Specific Surface Area(BET)m2/g	380±30	150±15	200±20	380±30
Loss on drying(2 hours at 105ºC) %	≤0.5	≤0.7	≤0.7	≤0.5
Loss on ignition (2 hours at 1000ºC) % (based on material dried for 2 hours at 105ºC)	≤8.0	≤2.5	≤2.5	≤4.0
Tamped Density g/L (Based on material dried at 105ºC for 2 hours)	40~60	40~60	40~60	40~60
Carbon Content % (Based on material dried at 105ºC for 2 hours)	3.5~6.5	0.6~1.2	0.8~1.6	2.5~4.0

ZH-135
Characteristics
ZH-135 is a hydrophobic fumed silica which is created by subjecting hydrophilic grades with BET of 380m2/g to chemical post-treatment with HMDS (Hexamethyldisilazane).

Properties
Low thickening effect and excellent processability enable high loading in polymers
Excellent reinforcing properties in silicone rubber especially at high filler loading levels(RTV-1,RTV-2,LSR)
Well suited for transparent systems
Free-flow aid for powders

Applications 
Silicone rubber; Adhesives and Sealants; Defoamer; Toner  

ZH-151
Characteristics
ZH-151 is a hydrophobic fumed silica which is created by subjecting  hydrophilic grades with BET of 150m2/g to chemical post-treatment with DDS(Dimethyldichlorosilane).

Applications 
RTV silicone rubber,especially electronic potting and Liquid glue; Adhesives and Sealants; Coatings & Printing ink 
Powder Coating

Properties         
Thixotropy and reinforcement in RTV silicone sealants, the hydrophobic feature gives RTV silicone sealants a long shelf-life
Rheology control in adhesives
Anti-settling, anti-sagging and thixotropy control
Free flow aid and anti-caking aid for powders

ZH-152
Characteristics
ZH-152 is a hydrophobic fumed silica which is created by subjecting  hydrophilic grades with BET of 200m2/g to chemical post-treatment with DDS(Dimethyldichlorosilane). 

Applications 
RTV silicone rubber,especially electronic potting and Liquid glue
Adhesives & Sealants
Coatings, Printing ink

Properties
Higher hydrohpobicity, thixotropy, thickening, transparency and reinforcement
Thixotropy and reinforcement in RTV silicone sealants, the hydrophobic feature gives RTV silicone sealants a long shelf-life                                           
Anti-settling,anti-sagging,thixotropy and Rheology control in adhesives 
Free flow aid and anti-caking aid for powders

ZH-630
Characteristics
ZH-630 is a hydrophobic fumed silica which is created by subjecting  hydrophilic grades with BET of 380m2/g to chemical post-treatment with HMDS (Hexamethyldisilazane). 

Applications 
Elastomers, HTV silicone rubber and LSR
Coatings and printings ink 
Defoamer                                                 
Carbon Powder for Printer

Properties
High reinforcement and transparency in HTV and LSR 
Anti-caking, anti-sagging, thixotrophy in coating and ink
High anti-foam property
Free flow aid and anti-caking aid for powders


Factory Equipment




FAQ

 1. Delivery time 

a) For the stock items, we can arrange the shippment within 2~3days after received your payment. For the customized items, we will indicate the delivery time in the quotation list. 

2. MOQ&Shipping

a) Full containers by sea 

b) Small quantity(>25kg), by air or by LCL or by Express as your requirement

3. Payment term

a) Small quantity recommend West Union

b) Full containers  recommend T/T or  L/C

4.How is the charge for sample?

Free samples could be offered and pls kindly pay the express charge.

5. Can you give warranty of your products?

Yes, we extend a 100% satifisfaction guarantee on all items. Please feel free to provide timely feedback if you're not satisfied with our Quality and Service. For the overseas orders, if there is a quality problem, please kindly to provide the picturers to show the problem by e-mail. We will provide the replacements to you at our cost according to actual conditions.

6.Can I visit your factory?

Sure, warm welcome. If you have visiting plan, please contact us to make an appointment in advance.