Active silica powder

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■ Brief Introduction

The modified silica powder series independently developed by Hico is made through surface treatment and fine processing of natural quartz. Its main component is SiO₂. After surface activation modification, it has good affinity with epoxy resin and organosilicon resin. In systems based on epoxy resin and organosilicon resin, it achieves a high filling effect without affecting performance to the maximum extent.

The surface of modified silica fume is equipped with chemical groups that are compatible with organic systems, which can increase the addition amount of modified silica fume and reduce costs. Meanwhile, it improves the processing technology, enhances the combination with organic systems, and makes the physical and chemical properties more excellent.

■ Product Features

• Surface activation treatment has better interface compatibility and is easier to disperse compared to untreated powder

• Special activation modification process, achieving high filling ratio and controlling viscosity in the field of sealing adhesive

• Can achieve material filling without affecting mechanical properties

• Under the microscopic morphology, the edges and corners of the particles are passivated, making them more regular and having better fluidity than conventional silicon micro powders

■ Product technical parameters

Products Name：Active silica powder

Modification type	Model No.	Whiteness	D50 (μm)	D90 (μm)	Oil absorption value (g/100g)	Moisture (%)
Vinyl modification	HY-G0-2L	greyish white	≤17.0	≤43.0	12-22	≤0.5
	HY-GB-3	91±2	2.5-5.5	7.5-13.5	30-40	≤0.5
Epoxy-based modification	HY-GA-1	88±2	8.0-10.5	20.5-28.5	22-35	≤0.5
	HY-GA-2	88±2	8.0-12.5	20.5-28.5	15-28	≤0.5
	HY-GA-3	89±2	8.0-12.5	20.5-28.5	15-28	≤0.5
Silazane modification	HY-G0-2N	85±2	≤17.0	≤43.0	15-25	≤0.5
	HY-GA-2N	89±2	8.0-12.5	20.5-28.5	15-25	≤0.5
	HY-GA-3N2	white/slightly yellow	≤9.5	/	≤20	≤0.5
Alkyl modification	HY-GB-S	92±2	4.0-6.0	8.8-12.0	20-30	≤0.5
	HY-GA-2J	90±2	8.8-12.5	20.5-28.5	15-25	≤0.5
	HY-GB-1J	92±2	4.00-6.00	8.80-12.00	20-30	≤0.5
Oligomer modification	HY-G0-2A	85±2	14-17	45-60	≤25	≤0.5
	HY-GB-4	92±2	4.0-6.0	8.8-12.0	20-30	≤0.5

The specific product values are subject to the actual factory inspection report.

■ Main applications

• Wires and cables

• New energy vehicles

• Energy storage