How to use fumed silica to thicken liquid systems?

You can gradually add the right amount of fumed silica to the liquid according to the needs of the liquid, and fully stir until uniform, in order to achieve the desired viscosity thickening effect.

Does this fumed silica powder thicken well?

This fumed silica works really well, and when I use epoxy resin, I add this fumed silica powder to the epoxy resin, and the epoxy thickens a lot. But please note that you'd better wear a protective mask when adding fumed silica, as silica powder is light and small and will be blown all over, it weighs nothing.

Just want to double check... can use this to strengthen gelcoat for fiberglass?

I think it would work. I use it to strengthen smooth pour for fish heads. It’s finely ground so I’m not sure if fiberglass powder would be better for you since would be stronger.

Does this fumed hydrophobic silica have insecticidal properties in a damp environment superior to diatomaceous earth?

They are very different things. I can't imagine Fumed Silica is as abrasive as diatomaceous earth, and that is what diatomaceous earth does to the exoskeleton of an insect, wear holes in it.

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TITGGI Fumed Silica Thickener for Epoxy Resin and Coatings 1 Quart (946 mL)

TITGGI Fumed Silica Thickener for Epoxy Resin and Coatings 1 Quart (946 mL)

Product ID: 417422864

Details

Brand
TITGGI
Color
White
Item Form
Powder
Item Weight
0.15 kg
Material
Fumed Silica

📈Adjustable viscosity control

🧪Hydrophilic fumed silica tech

⚖️946 mL precise volume

S$54

Duties & taxes included

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Description

🎨 Elevate your epoxy game—thicken, control, and conquer every coating challenge!

SAG FREE FINISH - Build thicker mixtures that resist runs and sagging on vertical and overhead surfaces.
MASTER YOUR FLOW - Gradually increase viscosity for flawless epoxy control and perfect placement every time.
SAFE SMART USE - Add slowly with ventilation to avoid dust, ensuring a clean, professional workspace.
LIGHTWEIGHT POWER - 1 quart volume feels featherlight, minimizing handling fatigue without compromising performance.
CUSTOM CONSISTENCY - From light thickening to paste-like textures—tailor your resin for any project need.

TITGGI Fumed Silica Thickener is a 946 mL industrial-grade hydrophilic powder designed to modify epoxy resin viscosity and flow. Ideal for gel coats, fiberglass, and coatings, it enables precise control over sag, runs, and placement with adjustable consistency, making it a must-have for professional-grade resin applications.

Specifications

ASIN	B09JSKQZL4
Best Sellers Rank	#28,711 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Graphite Raw Materials
Brand	TITGGI
Brand Name	TITGGI
Color	White
Customer Reviews	4.5 out of 5 stars 311 Reviews
Grade Rating	Industrial
Included Components	1
Item Form	Powder
Item Highlight	Rheology Modifier for Viscosity and Flow Control, Gel Coat, Fiberglass, Paint and Varnish
Item Weight	0.15 kg
Manufacturer	Evonik Corporation
Material	Fumed Silica Powder
Number of Items	1
Number of Packs	1
Part Number	A200
UPC	669936845569
Unit Count	31.99 Fluid Ounces

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