Hydroxy Silicone Oil 1000cst CAS 70131-67-8 is medium viscosity hydroxyl-terminated polydimethylsiloxane (107 silicone rubber).
It contains reactive terminal hydroxyl groups. It can undergo polycondensation crosslinking reaction with silane crosslinkers under catalytic conditions. After curing, the silicone rubber features good fluidity, excellent mold copying performance and moderate tear strength. It serves as the primary base polymer for two-component condensation RTV-2 mold making silicone

Product Detail

Hydroxy Silicone Oil 1000cst CAS 70131-67-8

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Product Overview

Hydroxy Silicone Oil 1000cst CAS 70131-67-8 is medium viscosity hydroxyl-terminated polydimethylsiloxane, also known as 107 silicone rubber.

This material has active terminal hydroxyl groups, which can realize polycondensation crosslinking reaction with silane crosslinkers with the participation of catalyst. The cured silicone material possesses outstanding flowability, high pattern reproduction capacity and balanced mechanical properties. It is specially developed as core base polymer for two-component condensation RTV-2 mold making silicone rubber.

Product Properties

Clear, colorless transparent viscous liquid

Kinematic viscosity: 1000 mm²/s (25℃)

Stable hydroxyl value

Narrow molecular weight distribution

Excellent compatibility with fillers, crosslinkers and organotin catalysts

Low volatile content

Smooth processing performance

Stable quality under sealed storage

Core Advantages

Stable viscosity, easy to match formula and control the fluidity of mold silicone
Good filling dispersibility, convenient to blend with silica powder and other fillers
Uniform crosslinking reaction, the finished rubber has fine texture and high copy precision
Moderate tear strength after curing, suitable for repeated demolding operation
Low impurity content, less shrinkage after vulcanization
Wide adaptability for various handicraft mold formulations

Main Applications

1000cst Hydroxy Silicone Oil acts as Base Polymer for RTV-2 Silicone Mold Making Rubber.

Typical applications: base material for art craft mold silicone, sculpture replica mold rubber, gypsum casting mold silicone, resin pouring mold silicone, toy prototype molding silicone raw material.

Usage Guidance

Avoid long-term exposure to humid air to prevent premature reaction.

Carry out small-scale formulation test to confirm dosage of crosslinker and catalyst.

Keep processing environment dry.

Prohibit mixing with acidic or alkaline contaminants.

Seal tightly after each usage.

Packing & Storage

Standard package: 200kg iron drum; small test samples are available.

Store in cool, dry and ventilated warehouse. Keep container tightly sealed. Stay away from open flame, high temperature, strong acid and alkali. Prevent water and impurity contamination during transportation.

Our Service

We provide stable bulk supply of 1000cst Hydroxy Silicone Oil with stable viscosity and hydroxyl value. Laboratory test samples can be supplied for formula trial. Our technical team offers professional guidance for mold silicone compounding.

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.