Silica For Green Tire

For tires, fumed silica can significantly improve the physical and mechanical properties of the rubber compound, decrease rolling resistance, and improve safety performance in raining weather.

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Silica For Green Tire

◆Description of products

GS-670 is a hydrophobic fumed silica which is created by subjecting  hydrophilic grades with BET of 380m2/g to chemical post-treatment with HMDS (Hexamethyldisilazane).

Hydrophobic fumed silica is made by hydrolyzing exertion chloroethane in oxy-hydrogen flame. From 2008 year till now, we began to produce fumed silica; the annual sales reached 1500 tons. Main used in paint and coating, as additive agent used to prevent subside, thickening, thixotropic agent and prevent sagging in liquid system. There is an effective changing in the aspect of liquid viscosity.

◆Application Scopes

For tires, fumed silica can significantly improve the physical and mechanical properties of the rubber compound, decrease rolling resistance, and improve safety performance in raining weather.

Adding silicon into tire formulation will soften the scratch between rubber molecules,this decreases energy loss and saves vehicle fuel consumption; Besides, as fumed silica is white powder,it’s easy to mix with other colors, giving chance for producing colorful tires.

◆The specification, feature and application

Properties (GS-670)

Unit

Typical Value

Testing Method

Specific Surface Area(BET)

m2/g

380±30

GB/T 20020

PH value in 4% dispersion

5.5~8.0

GB/T 20020

Loss on drying(2 hours at 105℃)

wt%

≤0.5

GB/T 20020

Loss on ignition(2 hours at 1000℃ based on material dried for 2 hours at 105℃)

wt%

≤4.0

GB/T 20020

Silica Content(Based on ignited material)

wt%

≥99.8

GB/T 20020

Tamped Density(Based on material dried at 105℃ for 2 hours)

g/L

40~60

GB/T 20020

Carbon Content (Based on material dried at 105℃ for 2 hours)

wt%

2.5~4.0

GB/T 20020