| 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.