EVOSIL® alkaline bio-based silica

Overview:

This product is a carbon-neutral AK series alkaline bio-based silicon dioxide (also known as bio-based white carbon black/rice husk silicon dioxide/rice husk white carbon black), prepared by a special carbon dioxide precipitation method using renewable resources such as rice husks and straw as raw materials. It is a white, non-toxic, amorphous microspherical substance.

Key words:

Rice Husk Silica

Bio-based silica

Classification:

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Product Details

Product Introduction

This product is a carbon-neutral AK series alkaline bio-based silicon dioxide (also known as bio-based silica/rice husk silica/rice husk silica), prepared by a special carbon dioxide precipitation method using renewable resources such as rice husks and straw as raw materials. It is a white, non-toxic, amorphous microspherical substance. This product is an important inorganic silicon compound with excellent properties such as porosity, light weight, good chemical stability, high temperature resistance, non-combustibility, and good electrical insulation.

Application Range

(1) This product is an alkaline bio-based silicon dioxide with a pH of 8.5-10.5. It can promote rubber vulcanization, shorten vulcanization time, and even eliminate the need for modification with silane, PEG, or other modifying agents.

(2) Because the surface of alkaline bio-based silicon dioxide contains hydroxyl groups, adding this product can improve product mechanical strength, reduce compression set, and enhance high resilience. It can be used as a filler in light-colored rubber products, especially fluoroelastomer products.

(3) Alkaline bio-based silicon dioxide is suitable for high-strength, light-colored NBR oil seals, O-rings, rubber tubes, low-hardness printing rollers, and high-strength, low-pressure deformation, and easily processed HNBR\ACM\AEM rubbers.

Technical Indicators

Item	Unit	EVOSIL®AK1080	EVOSIL®AK2165	EVOSIL@AK2175	EVOSIL@AK2200
Appearance		White microspheres	White microspheres	White microspheres	White microspheres
Nitrogen Adsorption Specific Surface Area (BET)	m²/g	80±20	165±20	175+20	200+20
Specific Surface Area (CTAB)	m²/g	70±20	155±20	165±20	190±20
Absorption Value (DBP)	cm³/g	1.0-2.5	2.0-3.5	2.0-3.5	2.0-3.5
Silicon Dioxide Content (Dry Basis)	%	≥92	≥95	≥95	≥95
Heating Loss	%	4.0～8.0	4.0～8.0	4.0～8.0	4.0～8.0
Ignition Loss (Dry Basis)	%	≤7.0	≤7.0	≤7.0	≤7.0
pH Value (10% aq)	/	8～11	8～11	8～11	8～11
Total Copper Content	mg/kg	≤10	≤10	≤10	≤10
Total Manganese Content	mg/kg	≤40	≤40	≤40	≤40
Total Iron Content	mg/kg	≤500	≤500	≤500	≤500