Footwear Grade Silica

◆Description of products

Functional footwear grade silica is made by special process, which is widely used in plastic astebatch openings, functional master batch, plastics and PP, PE, PVC, and widely used in PP master batch. Also it can be used as EVA anti-blocking agent and the quantity is about 30%.Aerogel silica ratio of major high transparency, easy to disperse and add. When producing high transparency film, aerogel silica can be used. If not, you can choose the precipitated white carbon black.

◆Application scopes

Silica serves as the main reinforcing filler in footwear to increase the transparency of vulcanized rubber. It also can improve comprehensive physical performances of rubber in the footwear.

◆The specification, feature and application

Grade	GS-305	GS-305C
Process	aerogel	precipitated
Form	White powder	White powder
Sio2 content %	99.9	99.7
whiteness	98	96
Average particle size um	4.5-5.5um	8-11um
Pore volume ml/g	1.6-1.8	1.4
Heating loss % 105℃2h	2-3	2-3
Ignition loss % 950℃2h	3-4	3-4
BET specific surface area ㎡/g	230-250	180-220
DBP absorption oil value ml/100g	270-280	260-270
PH value	6.5-7.5	6.5-7.5
Application scopes	Footwear