Fumed Silica for Rubber and Plastic

Fumed Silica  1.Introduction  Fumed Silica is type of white, non-toxic, odourless and amorphous inorganic fine chemistry products which is made of the chlorosilane with the pyrohydrolysis under the oxy-hydrogen flame state.       2.Specification  Specific surface area m²/g: 150±15 Suspending liquid PH value(4%) (water: ethanol 1:1):3.7-4.5 Loss on drying(105°C,2h),w%:≤1.5 Lgnition loss(1000°C,2h),wt%:≤2.0 Silicon dioxide content,wt%:≥99.8 Apparent density(105°C drying in 2 hours),g/L:40-60 Carbon content(105°C drying in 2 hours),wt%:≤0.15  

Project	Index	Index
Model	GS-199	GS-299
Exterior	White powder	White powder
Whiteness	Equal to the standard sample	Equal to the standard sample
Silica content (dry goods)	≥99.9	≥96
PH value	≥7	≥7
BET (specific surface area)	≥280	≥160
DBPml/100g (oil absorption)	≥370	≥260
Particle size distribution was detected	325 mesh	200 mesh
Loss on ignition (dry goods)% 1000,2 h	4.5-6.0	4.0-7.0
Heating loss% 105,2 h	3.0-4.0	4.0-5.3

     3.Application  It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.
Precipitated Silica for rubber products

Model	ZQ-356-1	ZQ-356-2	ZQ-120	CL-178	ZQ-356JG	ZQ-356K
BET specific surface area (m2/g)	160-180	160-180	90-130	160-180	180-200	160-180
Silica content (dry goods) %	≥96.7	≥96.7	≥96.5	≥96.5	≥96.7	≥96.7
Heating loss (%)	6.2-7.2	5.5-6.2	6.0-7.2	6.0-7.0	6.0-7.0	5.5-7.2
Loss on ignition (%)	≤5.3	≤5.3	≤5.3	≤5.3	≤5.3	≤5.3
PH value	6.9±0.3	6.9±0.3	6.0±6.8	6.9±0.3	6.9±0.3	6.9±0.3
DBP oil absorption (cm3/g)	2.33-2.60	2.33-2.60	1.80-2.30	2.33-2.65	2.40-2.75	2.33-2.60
Sulfate content (%)	≤1.5	≤1.5	≤1.5	≤1.5	≤1.5	≤1.5
The total iron content (mg/kg)	≤750	≤750	≤1000	≤1000	≤750	≤800
Exterior	White powder	White powder	White powder	White powder	White powder	White powder

  Application: Widely used as a reinforcing agent for rubber soles, tape, rubber sheet, rubber tube, water bottle, rubber rollers, wear rubber products and other miscellaneous items.    Precipitated Silica for silicone rubber

Model	ZQ-356GJ-1	ZQ-356GJ-2	ZQ-356GJ-3	ZQ-356GJ-4
BET specific surface area (m2/g)	165-185	145-165	165-185	145-165
Silica content (dry goods) %	≥98.0	≥98.0	≥98.0	≥98.0
Heating loss (%)	5.0-6.2	5.0-6.2	5.0-6.2	5.0-6.2
Particle size	45um sieve residue≤0.1%	45um sieve residue≤0.1%	45um sieve residue≤0.1%	45um sieve residue≤0.1%
PH value	6.9±0.3	6.9±0.3	6.9±0.3	6.9±0.3
Sulfate content (%)	≤1.0	≤1.0	≤1.0	≤1.0
The total iron content (mg/kg)	≤150	≤300	≤150	≤300
Appearance	Ordinary powder	Ordinary powder	Ordinary powder	Ordinary powder

  Application: Used in light-colored rubber and plastic transparent areas, such as heat curing silicone rubber (HTV), room temperature vulcanized silicone rubber (RTV) and ceramic glazes, glass, steel and other industries.      4.Package and Storage  10kg, 20kg/bag, being stored under the dry, shady and cool place. A 40ft FCL volume is 4 tons        5.Our Exhibitions     6.Our company     7.Contact us   

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Product Categories : Amorphous Fumed Silica