Silicone Resin

Product Specifications

Technical details and manufacturing context for Silicone Resin

Definition

Silicone resin is a thermosetting polymer composed of a silicon-oxygen backbone with organic side groups (typically methyl or phenyl). It is produced through hydrolysis and condensation of organosilicon monomers, resulting in a cross-linked network structure. These resins exhibit exceptional properties including high thermal stability (up to 300°C), excellent electrical insulation, UV resistance, water repellency, and chemical inertness. They maintain flexibility and mechanical properties across a wide temperature range (-60°C to +250°C) and demonstrate low surface tension and good release properties. In industrial applications, silicone resins are used as binders in coatings, adhesives, and composites, providing durable protection against heat, moisture, and environmental degradation. They are also employed in electrical insulation, encapsulation, and as release agents. The material's performance is characterized by parameters such as viscosity (1000–5000 cP), cure temperature (150–250°C), thermal stability (-60–300°C), dielectric strength (16–25 kV/mm), hardness (40–70 Shore A), solid content (50–70%), density (1.05–1.15 g/cm³), water absorption (0.1–0.5%), tensile strength (20–40 MPa), elongation at break (50–150%), volume resistivity (10^13–10^15 Ω·cm), flammability rating (V-0), and shelf life (6–12 months). These values are typical ranges and must be verified for specific formulations. Standards such as ISO 3219, IEC 60216, IEC 60243, ISO 868, ISO 3251, ISO 1183, ISO 62, ISO 527, IEC 60093, and UL 94 are referenced for testing methods. Always confirm model-specific data with the legal manufacturer or supplier.

Working Principle

Silicone resins function through their cross-linked polysiloxane structure. When cured (typically via heat or catalysts), the resin forms a three-dimensional network where silicon atoms are bonded to oxygen atoms in a chain, with organic groups attached to silicon. This structure provides thermal stability because silicon-oxygen bonds are stronger than carbon-carbon bonds. The organic groups influence flexibility and compatibility. The resin cures from a liquid or semi-solid state to a solid through polycondensation reactions, releasing byproducts like water or alcohols, forming durable coatings, adhesives, or molded parts that resist degradation from heat, moisture, and environmental exposure.

Common Materials

Silicon, Oxygen, Methyl groups, Phenyl groups

Technical Parameters

Parameter	Typical range	Notes & selection driver
ViscosityRequired	1000–5000 cP	Measure of resistance to flow at specified temperature, affecting application method and coating thicknessISO 3219
Cure TemperatureRequired	150–250 °C	Temperature required for complete cross-linking and hardening of the resin
Thermal StabilityRequired	-60–300 °C	Maximum continuous operating temperature without significant degradationIEC 60216
Dielectric Strength	16–25 kV/mm	Electrical insulation capability, measuring maximum electric field before breakdownIEC 60243
Hardness	40–70 Shore A	Measure of cured resin resistance to indentation, indicating flexibility or rigidityISO 868
Solid Content	50–70 %	Affects application thickness and shrinkageISO 3251
Density	1.05–1.15 g/cm³	At 25°CISO 1183
Water Absorption	0.1–0.5 %	After 24h immersionISO 62
Tensile Strength	20–40 MPa	Depends on formulationISO 527
Elongation at Break	50–150 %	Indicates flexibilityISO 527
Volume Resistivity	10^13–10^15 Ω·cm	At 25°C, 50% RHIEC 60093
Flammability Rating	V-0	At 1.5 mm thicknessUL 94
Shelf Life	6–12 months	In sealed container at 25°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Siloxane Backbone Part
Provides structural integrity, thermal stability, and chemical resistance through alternating silicon-oxygen bonds

Material: Inorganic silicon-oxygen polymer chain
Organic Side Groups Part
Modify properties such as flexibility, compatibility with other materials, and hydrophobicity

Material: Methyl, phenyl, or other organic radicals attached to silicon atoms
Cross-linking Agents Part
Enable curing by forming bonds between polymer chains, creating three-dimensional network

Material: Silanes with reactive groups (e.g., alkoxy, acetoxy) or peroxides
Catalysts Part
Accelerate curing reactions, reducing cure time and temperature requirements

Material: Tin compounds, platinum complexes, or amines
Fillers Part
Enhance mechanical properties, thermal conductivity, or reduce cost

Material: Silica, calcium carbonate, or other inorganic powders

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Silicone Resin.

Manufacturers of Silicone Resin

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SiLIM Technologies (Shenzhen) Co., Ltd.

Shenzhen, Guangdong, CN

Also makes: Silicone Rubber, Liquid Silicone Rubber

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

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Procurement Evaluation Criteria

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Manufacturing capability

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Frequently Asked Questions

What are the typical thermal stability limits of silicone resin?

According to the directory data, silicone resin can operate continuously from -60°C to 300°C without significant degradation, as per IEC 60216. However, actual limits depend on the specific formulation and application conditions.

How is silicone resin cured?

Curing occurs through polycondensation reactions, typically initiated by heat (150–250°C) or catalysts. The process forms a cross-linked network, releasing byproducts like water or alcohols. The exact cure schedule should be confirmed with the supplier.

What are the electrical insulation properties?

Silicone resin exhibits dielectric strength of 16–25 kV/mm (IEC 60243) and volume resistivity of 10^13–10^15 Ω·cm (IEC 60093). These values are typical ranges; verify for the specific product.

What standards apply to silicone resin testing?

Common standards include ISO 3219 for viscosity, IEC 60216 for thermal stability, IEC 60243 for dielectric strength, ISO 868 for hardness, and UL 94 for flammability. These are reference methods; compliance must be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 10 bar (dependent on formulation and substrate)
other spec:	UV resistance: Excellent, Dielectric strength: 15-25 kV/mm, Viscosity range: 100-5000 cP (adjustable)
temperature:	-50°C to 250°C (continuous), up to 300°C (short-term)

Product Specifications

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