Surface Modified Nano Silica Powder CAS 7631-86-9 undergoes organic surface treatment, featuring good compatibility with rubber and plastic matrix. It can significantly enhance tensile strength, wear resistance and dimensional stability, widely used as reinforcing filler for rubber reinforcement and plastic toughening.

Product Detail

Surface Modified Nano Silica CAS 7631-86-9 Powder for Rubber Reinforcement Plastic Toughening

Product Overview

Surface Modified Nano Silica Powder (CAS 7631-86-9) is nano silicon dioxide treated by organic surface modification technology. The surface modification reduces agglomeration of nanoparticles and greatly improves compatibility with non-polar and polar polymer matrices such as rubber and plastics. When added into rubber and plastic systems, it forms stable interface bonding with resin matrix, effectively improving mechanical strength, wear resistance, thermal stability and dimensional accuracy of finished products. It is a high-performance inorganic reinforcing filler widely used in polymer composite industry.

Core Features

Organic Surface Modification: Lower surface polarity, easy dispersion in rubber and plastic, avoid particle agglomeration.
Excellent Reinforcement Effect: Remarkably boost tensile strength, tear resistance and hardness of rubber products.
Plastic Toughening Function: Improve impact resistance of plastics without obvious loss of rigidity.
Good Wear & Anti-Aging Performance: Promote wear resistance and ultraviolet aging resistance of composites.
Stable Dimensional Stability: Reduce shrinkage and deformation of molded plastic and rubber parts.
Wide Formula Adaptability: Compatible with natural rubber, synthetic rubber, PP, PE, PVC, epoxy and other materials.

Product Specifications

Product Name: Surface Modified Nano Silica Powder

CAS No: 7631-86-9

Appearance: White loose powder

Main Component: Nano Silicon Dioxide (SiO₂)

Treatment Type: Organic surface modification

Core Functions: Rubber reinforcement, plastic toughening, wear resistance improvement

Applicable Materials: Various rubber, general plastics, engineering plastics, elastomers

Application Scope

This modified nano silica powder is widely adopted as reinforcing filler for rubber and plastic industries.

Rubber field: tires, rubber hoses, sealing gaskets, conveyor belts, shoe soles, silicone rubber products;

Plastic field: modified PP/PE, PVC profiles, plastic pipe fittings, engineering plastic parts, composite materials, elastomer products.

It can partially replace carbon black and conventional precipitated silica to upgrade product performance.

Usage Guide

Mix nano silica powder with resin, coupling agent and other additives at medium speed during compounding. Appropriate dispersant can be added to achieve uniform dispersion. Control processing temperature to prevent local overheating. Optimize filling dosage according to actual formula test. Dry storage before feeding to prevent moisture absorption.

Packaging & Storage

Packaging: 20kg woven bag with inner plastic bag, customized packaging available

Storage: Keep sealed in cool, dry and ventilated warehouse, prevent moisture absorption and dust pollution

Shelf Life: 12 months under original sealed storage

Our Advantages

Our surface modified nano silica adopts mature continuous modification process with stable surface treatment degree and consistent batch quality. The powder possesses outstanding dispersibility in polymer systems, bringing balanced rigidity and toughness to products. We support customized particle size and modification formulas to meet different processing requirements of rubber and plastic manufacturers. Factory direct supply with stable stock, fast delivery and free sample testing service.

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