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Silicone Polymer Base Component – Rubber and Plastic Product Manufacturing

Component Specifications

Definition

Silicone polymer base is a synthetic polymer composed of repeating siloxane units (Si-O-Si) with organic side groups, typically methyl or phenyl. It serves as the primary matrix material in high-temperature silicone rubber compounds, providing thermal stability, flexibility, and chemical resistance. This material undergoes vulcanization with cross-linking agents to form elastomeric products capable of withstanding extreme temperatures from -60°C to 300°C.

Working Principle

The silicone polymer base functions through its siloxane backbone structure, which provides exceptional thermal and oxidative stability. When combined with reinforcing fillers (like silica) and cross-linking agents, it undergoes vulcanization to form a three-dimensional network. This network structure enables the material to maintain elasticity and mechanical properties across a wide temperature range while resisting degradation from heat, ozone, and UV exposure.

Materials

Polydimethylsiloxane (PDMS) or polymethylphenylsiloxane with vinyl or hydroxyl functional groups for cross-linking. Typically contains reinforcing silica fillers (fumed or precipitated) at 20-40% loading.

Technical Parameters

Viscosity 10,000-100,000 cP at 25°C
Specific Gravity 0.98-1.10
Tensile Strength 5-12 MPa
Temperature Range -60°C to 300°C
Hardness (Shore A) 20-80
Dielectric Strength 15-25 kV/mm
Elongation at Break 200-800%

Standards

ISO 1629, ISO 37, ISO 48, DIN 53504, DIN 53505

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Silicone Polymer Base.

Parent Products

This component is used in the following industrial products

High-Temperature Silicone Rubber Compound

Thermally stable silicone elastomer for appliance sealing and insulation

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal degradation above 300°C
Compression set at high temperatures
Swelling in hydrocarbon solvents
Reduced mechanical strength compared to organic rubbers

FMEA Triads

Trigger: Inadequate cross-linking during vulcanization
Failure: Poor mechanical properties and reduced temperature resistance
Mitigation: Optimize curing temperature/time, use appropriate catalyst systems, implement quality control testing

Trigger: Contamination with organic materials
Failure: Reduced thermal stability and premature degradation
Mitigation: Maintain clean processing environment, implement material segregation protocols

Trigger: Incorrect filler dispersion
Failure: Inconsistent mechanical properties and reduced reinforcement
Mitigation: Implement proper mixing procedures, use surface-treated fillers, conduct dispersion testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±5% on viscosity, ±0.02 on specific gravity, ±5 Shore A points on hardness

Test Method

ISO 37 for tensile properties, ISO 48 for hardness, ISO 815 for compression set, ASTM D412 for elongation

Buyer Feedback

★★★★☆ 4.5 / 5.0 (31 reviews)

"Found 45+ suppliers for Silicone Polymer Base on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Silicone Polymer Base is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Rubber and Plastic Product Manufacturing environments. No issues with the Silicone Polymer Base so far."

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Frequently Asked Questions

What is the maximum temperature silicone polymer base can withstand?

Silicone polymer base can continuously withstand temperatures up to 300°C (572°F) with proper formulation, with intermittent exposure possible up to 350°C (662°F) depending on specific grade and additives.

How does silicone polymer base differ from organic rubber bases?

Silicone polymer base has a siloxane backbone (Si-O-Si) rather than carbon-carbon bonds, giving it superior thermal stability, UV resistance, and flexibility across extreme temperatures compared to organic rubbers like natural rubber or SBR.

What industries commonly use silicone polymer base materials?

Automotive (gaskets, seals), aerospace (thermal protection), electrical (insulation), medical (implants, tubing), and industrial manufacturing (molds, seals) where high-temperature resistance and durability are required.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Silicone Polymer Base