Customization: | Available |
---|---|
Material: | Organic Silicone |
Application: | Household, Medical, Industrial, Agricultural |
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Thermally Conductive Silicone Sheet
(Also known as thermally conductive silicone pad or thermal silicone sheet)
Thermally conductive silicone sheets offer excellent thermal conductivity and high-grade pressure resistance, making them an ideal solution for modern thermal management in the electronics industry. Serving as a superior alternative to traditional silicone grease thermal paste and mica sheets, these sheets are the optimal choice for cooling systems.
Designed for ease of installation, they streamline automated production and simplify product maintenance, combining exceptional craftsmanship with practical functionality.
The thickness and hardness of thermally conductive silicone sheets can be customized to accommodate various design requirements. This flexibility allows them to bridge gaps in thermal conduction channels, compensating for structural tolerances between heat sinks and chips. By mitigating the need for ultra-precise machining of contact surfaces-where flatness and roughness differences would otherwise drive up costs-these sheets maximize the contact area between heat-generating components and heat sinks. As a result, they enhance heat transfer efficiency while reducing overall production costs.
Thermally Conductive Silicone Sheets: Advanced Heat Management Solutions
Thermally conductive silicone sheets play a critical role in thermal interface management, offering reliable and efficient heat dissipation in a wide range of electronic and industrial applications. Unlike conventional silicone sheets, these specialized materials are engineered with thermally conductive fillers, making them ideal for transferring heat away from heat-sensitive components such as CPUs, power modules, batteries, and LED systems.
Thermally conductive silicone sheets are valued for their unique combination of thermal performance, mechanical flexibility, and electrical insulation. These characteristics make them a preferred choice for engineers designing compact and high-performance systems.
The core feature of these sheets is their ability to transfer heat efficiently.
Thermal conductivity ranges typically from 1 to 10 W/m·K, depending on the type, concentration, and dispersion of thermally conductive fillers like ceramic, graphite, or metal oxides.
This ensures reliable heat transfer from electronic components to heat sinks or chassis, reducing the risk of overheating and improving performance longevity.
The silicone matrix maintains excellent elasticity and softness, allowing the sheets to conform to uneven surfaces and fill micro-gaps between mating components.
This helps minimize thermal resistance and ensures consistent contact, which is essential in compact electronic assemblies.
Despite their thermal conductivity, these sheets provide superior dielectric strength, often exceeding 10 kV/mm, making them ideal for applications where both heat transfer and electrical insulation are required.
This dual function ensures component protection from electrical shorts or arc discharge, enhancing system safety.
Designed for extreme environments, thermally conductive silicone sheets can typically operate within a wide temperature range of -50°C to +200°C.
This thermal stability makes them suitable for use in automotive, aerospace, power electronics, and outdoor LED lighting, where exposure to fluctuating or extreme temperatures is common.
The inherent properties of silicone provide excellent resistance to moisture, UV radiation, ozone, and many chemicals, ensuring long-term performance even in harsh environments.
Available in a variety of thicknesses, hardness levels (Shore A), and surface finishes (e.g., smooth, textured, adhesive-backed), these sheets can be tailored to meet specific thermal, mechanical, and assembly requirements.
They can also be die-cut or laminated for precise fit and easy integration into automated assembly processes.
Applications
Thermally conductive silicone sheets are widely used across industries including:
Consumer electronics (laptops, mobile devices, power adapters)
Automotive electronics (battery modules, ECU systems)
LED lighting (thermal pads for heat sinks)
Telecom and server hardware (cooling modules, memory chips)
Industrial power systems (inverters, converters, motor drives)
Conclusion
Thermally conductive silicone sheets are an indispensable component in modern thermal management strategies. Their blend of heat dissipation, flexibility, and electrical insulation makes them a robust and versatile solution for protecting sensitive electronics and ensuring optimal performance across demanding environments.
|
Item |
Standard |
Unit |
DC1010 |
DC1015 |
DC1020 |
DC1030 |
1 |
Thickness |
ASTM D374 |
mm |
0.3-20 |
0.3-20 |
0.3-20 |
0.3-20 |
2 |
proportion |
ASTM D792 |
g/cc |
1.8±0.1 |
1.9 ±0.1 |
2.4±0.1 |
2.9±0.1 |
3 |
Hardness |
ASTM D2240 |
Shore 00 |
15-50 |
20-50 |
30-50 |
30-60 |
4 |
Temperature |
EN344 |
°C |
-40-200 |
-40-200 |
-40-200 |
-40-200 |
5 |
Dielectric constant |
ASTM D150 |
/ |
4.8 |
4.8 |
5.3 |
5.4 |
6 |
Volumetric resistivity |
ASTM D257 |
Q-cm |
1.0*10^12 |
1.0*10^12 |
1.0*10^12 |
1.0*10^12 |
7 |
Voltage resistance |
ASTM D149 |
kV/mm |
4 |
4 |
4 |
4 |
8 |
Flame retardancy |
UL-94 |
/ |
V-0 |
V-0 |
V-0 |
V-0 |
9 |
Thermal conductivity |
ASTM D5470 |
W/m K |
1 |
1.5 |
2 |
3 |
10 |
Environmental Testing |
RoHS REACH |
/ |
Qualified |
|||
11 |
Remarks |
Cutting and processing of rolls, sheets and backings are available. Special thermal conductivity, performance parameters, width, thickness and color can be customized and adjusted upon request. |
Item |
Standard |
Unit |
DC1040 |
DC1050 |
DC1060 |
DC1080 |
|
1 |
Thickness |
ASTM D374 |
mm |
0.3-20 |
0.3-20 |
0.3-20 |
0.3-20 |
2 |
proportion |
ASTM D792 |
g/cc |
3.2±0.1 |
3.3 ±0.1 |
3.5±0.1 |
3.5±0.1 |
3 |
Hardness |
ASTM D2240 |
Shore 00 |
40-60 |
40-60 |
40-60 |
50-75 |
4 |
Temperature |
EN344 |
°C |
-40-200 |
-40-200 |
-40-200 |
-40-200 |
5 |
Dielectric constant |
ASTM D150 |
/ |
6 |
6.2 |
6.2 |
6.2 |
6 |
Volumetric resistivity |
ASTM D257 |
Q-cm |
1.0*10^12 |
1.0*10^12 |
1.0*10^12 |
1.0*10^12 |
7 |
Voltage resistance |
ASTM D149 |
kV/mm |
4 |
6 |
6.1 |
6.1 |
8 |
Flame retardancy |
UL-94 |
/ |
V-0 |
V-0 |
V-0 |
V-0 |
9 |
Thermal conductivity |
ASTM D5470 |
W/m K |
4 |
5 |
6 |
8 |
10 |
Environmental Testing |
RoHS REACH |
/ |
Qualified |
|||
11 |
Remarks |
Cutting and processing of rolls, sheets and backings are available. Special thermal conductivity, performance parameters, width, thickness and color can be customized and adjusted upon request. |
Base Materials:
High-purity silicone rubber (LSR/HCR)
Thermally conductive fillers (Al2O3, BN, AlN, or hybrid compositions)
Additives:
Curing agents (peroxide/platinum catalyst)
Coupling agents (for filler dispersion)
Flame retardants (for UL 94 V-0 grades)
QC Checks:
Filler purity & particle size distribution
Silicone viscosity verification
Moisture content analysis
Customization Parameters:
Thermal conductivity (1.0-6.0 W/mK)
Hardness (Shore OO 20-60)
Thickness (0.3-10mm)
Lab-Scale Trials:
Filler loading optimization
Rheology testing for processability
Thermal impedance measurements
Process:
Multi-stage mixing (filler pre-treatment → masterbatch → final mix)
Vacuum degassing (<1kPa) to remove air pockets
Equipment:
Planetary mixers with torque monitoring
Three-roll mills for filler dispersion
Critical Controls:
Filler sedimentation rate
Scorch time measurement
Batch homogeneity testing
Methods:
Continuous calendering (for thin sheets)
Compression molding (for thick pads)
Process Parameters:
Gap accuracy: ±0.02mm
Line speed: 0.5-3 m/min
Temperature zones: 80-120°C (pre-heat) → 150-180°C (cure)
In-Line Monitoring:
IR thickness gauges
Surface defect detection cameras
Thermal Treatment:
Stage 1: 180°C × 2hr (primary crosslinking)
Stage 2: 200°C × 4hr (post-cure for low volatiles)
Purpose:
Enhance thermal stability
Reduce compression set
Improve dielectric properties
Technologies:
CNC die-cutting (±0.1mm tolerance)
Laser cutting (for complex shapes)
Waterjet (for thick sheets)
Secondary Processing:
PSA lamination (acrylic/silicone adhesives)
EMI shielding layer integration
Multi-layer stacking for TIM assemblies
Testing Protocols:
Test Category | Methods | Standards |
---|---|---|
Thermal | Hot disk method | ASTM D5470 |
Mechanical | Tensile/compression | ISO 37 |
Electrical | Dielectric strength | IEC 60243 |
Environmental | Thermal cycling (-40°C~150°C) | MIL-STD-810G |
Statistical Process Control:
CpK >1.33 for critical parameters
Lot traceability with QR coding
Special Handling:
Anti-static interleaving paper
Humidity-controlled (<30% RH) packaging
ESD-safe containers for electronic grades
Labeling:
Thermal conductivity value
Directional heat flow marking
Compliance markings (UL/RoHS)
Hangzhou Dachuang Kehua is a national high-tech enterprise dedicated to the research, development, manufacturing, and sales of high-performance silicone materials. Located in Qingshanhu Science and Technology City, Hangzhou-a strategic hub in China's National Science and Technology Innovation Corridor-we integrate cutting-edge research, advanced production capabilities, and deep industry knowledge to deliver innovative, sustainable silicone solutions to global markets.
Silicone Rubber & Foam Sheets
Silicone Tubes & Strips
Oil Seals & Custom-Molded Silicone Components
New Energy Vehicles (NEV) & EV Battery Systems
Energy Storage Systems (ESS) & Solar Photovoltaics (PV)
5G Telecommunications & Consumer Electronics
Construction & Heavy Industrial Equipment
Aerospace, Healthcare, and Consumer Products
15+ Years of R&D Experience: Proprietary silicone formulations and scalable production processes.
DC800 Series Liquid Foamed Silicone: Eco-friendly, self-foaming (no external agents), excellent UL94 V-0 flame resistance and IP68 waterproof sealing.
Automotive-Grade Materials: Fully compliant with IATF 16949 for EV and ESS applications.
Quality Management: ISO 9001, IATF 16949
Regulatory Compliance: UL/CUL UL157, RoHS 2.0, REACH, SGS
Tailored solutions in density, hardness, and cell structure (open-cell or closed-cell)
Full-service support: Die-cutting, lamination, adhesive backing and prototyping
Product Series | Key Features | Applications |
---|---|---|
DC800 Foamed Silicone | Low/medium/high density, -55°C to 200°C, IP68 sealing | EV battery cushioning, 5G EMI shielding |
DC900 Rigid Foam | Structural support, high compression resistance | Energy storage, industrial gaskets |
DC10 Thermal Pads | High thermal conductivity, lightweight | Battery cooling, electronics heat dissipation |
DC400 Fireproof Silicone | Ceramicizes at high temps, thermal runaway protection | ESS fire barriers, aerospace |
DC600 Silicone-PTFE | Chemical/corrosion resistant | Medical, chemical processing |
30+ Performance Tests: Tensile strength, compression set, thermal aging, flame resistance, salt spray resistance, and more
Automated Manufacturing: From precision mixing and vulcanization to CNC cutting and post-processing
Research Collaborations: Joint labs with top research institutes accelerate innovation and shorten product development cycles
Trusted by leading global enterprises, including:
CATL, BYD - Leaders in EV battery manufacturing
Huawei - Pioneer in 5G infrastructure
Top Energy Storage & Solar Technology Providers - Across Asia, Europe, and North America
Contact us today to discuss your custom silicone material needs.
Driven by our mission-"Empowering Industrial Upgrades Through Material Science"-Dachuang Kehua is committed to becoming a global leader in silicone materials, supporting the growth of green energy, smart manufacturing, and sustainable development worldwide.
Q: Are you trading company or manufacturer ?
A: We are manufacturer, our factory in Dongguan city, China. Welcome to visit us.
Q: How long is your delivery time?
A: Each 100,000 pieces, we need about 3 days to produce.
Q: Do you provide samples ? is it free or extra ?
A: Sample is available, please you need to pay for it.
Q: How to customize a sample?
A: Please send us design of your products, such as size, shape, etc. We can customize your products