INDUSTRY COMPONENT

Siloxane Backbone

The siloxane backbone is the repeating Si-O-Si chain that forms the core structure of silicone resins, providing flexibility and thermal stability.

View Specifications

Component Specifications

Definition
The siloxane backbone consists of alternating silicon and oxygen atoms (Si-O-Si) with organic side groups attached to silicon. This inorganic-organic hybrid structure imparts unique properties such as high thermal stability, low surface tension, and resistance to oxidation and UV radiation. In silicone resins, the backbone length and crosslinking density determine mechanical strength and hardness.
Working Principle
The siloxane backbone is synthesized via hydrolysis and condensation of organosilicon monomers (e.g., dimethyldichlorosilane). The Si-O bond has high bond energy (452 kJ/mol), providing thermal stability. Flexibility arises from the low rotational barrier around the Si-O bond. Crosslinking occurs through residual silanol groups or functional side chains, forming a three-dimensional network.
Materials
Polydimethylsiloxane (PDMS) with controlled molecular weight; vinyl or phenyl groups for crosslinking; purity >99%.
Technical Parameters
  • Density 0.97-1.02 g/cm³
  • Viscosity 100-10,000 cP at 25°C
  • Molecular Weight 10,000-100,000 g/mol
  • Thermal Decomposition Temperature >350°C
Standards
ISO 14526, DIN 16946

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Siloxane Backbone.

siloxane backbone silicone resin Si-O-Si chain thermal stability flexibility organosilicon Siloxane Backbone in Chemical Manufacturing

Parent Products

This component is used in the following industrial products

Silicone Resin

A synthetic polymer derived from silicon, oxygen, and organic groups, known for its thermal stability, electrical insulation, and weather resistance.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Hydrolysis sensitivity in acidic conditions
  • Potential for cyclic siloxane formation during synthesis
FMEA Triads
Trigger: Incomplete condensation
Failure: Reduced crosslinking density leading to soft resin
Mitigation: Optimize reaction time and catalyst concentration
Trigger: Contamination with water
Failure: Premature gelation
Mitigation: Use anhydrous conditions and dry raw materials

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for molecular weight distribution
Test Method
Gel Permeation Chromatography (GPC) per ASTM D5296

Buyer Feedback

★★★★☆ 4.6 / 5.0 (8 reviews)

"Found 38+ suppliers for Siloxane Backbone on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Siloxane Backbone is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Chemical Manufacturing environments. No issues with the Siloxane Backbone so far."

Related Components

Seeding Port
A precision port for introducing seed crystals into batch crystallization systems to initiate controlled crystal growth.
Sight Glass
A transparent window for visual inspection of fluid flow and crystallization processes in industrial systems.
Control Software
Specialized software for real-time monitoring and control of continuous flow pharmaceutical reactors, ensuring precise process parameters and regulatory compliance.
Conveyor Interface
Precision interface component connecting vial transport systems in pharmaceutical inspection machines

Frequently Asked Questions

What is the siloxane backbone?

It is the repeating Si-O-Si chain that forms the core of silicone resins, providing flexibility and thermal stability.

How does the siloxane backbone affect silicone resin properties?

It imparts high thermal stability, low surface tension, and resistance to oxidation and UV radiation.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Siloxane Backbone

Silicone Polymer Core Sodium Carbonate Matrix