Colloidal Silica Nano SiO₂ Solution CAS 7631-86-9 is water-based silica sol. Nano silicon dioxide particles are stably dispersed in water medium. It can effectively improve surface hardness and anti-scratch performance of paint films. Widely used as anti-scratch additive for different kinds of waterborne industrial coatings.

Product Detail

Colloidal Silica Nano SiO2 Solution CAS 7631-86-9 Water Based Anti-scratch Agent for Industrial Coating

Product Overview

Colloidal Silica Nano SiO₂ Solution CAS 7631-86-9 is water-based silica sol. Nano silica particles are uniformly and stably dispersed in deionized water via special dispersion technology, avoiding particle agglomeration. When incorporated into waterborne coatings, it significantly boosts film surface hardness, abrasion resistance and anti-scratch property. The product features good compatibility with most waterborne resin systems, low viscosity and convenient addition. It is an eco-friendly functional additive for industrial coatings.

Core Features

Excellent Anti-scratch & Abrasion Resistance: Raise coating hardness, reduce scratches and wear marks on coating surface.
Stable Aqueous Dispersion: Nano SiO₂ evenly distributed, long-term storage without obvious sedimentation.
Great Compatibility: Well matched with waterborne acrylic, polyurethane, epoxy and other coating resins.
Water-based & Low VOC: Environmentally friendly, conforms to green coating production requirements.
Improve Film Compactness: Enhance water resistance and stain resistance of cured paint film.
Easy to Use: Directly add into coating formula, no complicated pre-dispersion treatment.

Product Specifications

Product Name: Colloidal Silica Nano SiO₂ Solution

CAS No: 7631-86-9

Appearance: Translucent or milky uniform liquid

Dispersion Medium: Deionized water

Active Ingredient: Nano Silicon Dioxide

Core Function: Anti-scratch, abrasion resistance, hardness improvement

Main Applications: Water-based industrial coating additive

Applicable Systems: Various waterborne industrial coating formulations

Application Scope

This colloidal silica is widely applied in water-based industrial coatings. Suitable for hardware coating, plastic surface coating, furniture water paint, metal protective coating, architectural waterborne coating and other products. It effectively optimizes surface texture of finished coatings and prolongs the service life of coated substrates.

Usage Guide

Stir the colloidal silica evenly before use. Slowly add it into coatings under low-speed stirring and continue stirring to achieve uniform mixing. Avoid long-time high-speed stirring to prevent system viscosity abnormality. Seal leftover liquid to prevent water evaporation and particle aggregation.

Packaging & Storage

Packaging: 25kg plastic drum, IBC tank, customized packaging supported

Storage: Store in cool and ventilated warehouse, avoid freezing and intense sunlight

Shelf Life: 6 months under sealed normal temperature storage

Our Advantages

Our nano silica sol adopts controllable particle size technology with stable dispersion performance. It effectively solves the problem of insufficient surface hardness of waterborne coatings. Less impact on coating gloss and transparency. Stable batch quality, factory direct supply with sufficient inventory and fast delivery. Free samples and formulation adjustment suggestions are provided for coating manufacturers.

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