Engineered Silicone Sheets for Superior Heat Dissipation

• Customization: Available
• Material: Organic Silicone
• Application: Household, Medical, Industrial, Agricultural
• Model NO.: DC
• Certification: ISO, REACH, RoHS
• Storage: 27ºC in a Cool and Dry Place
• Transport Package: Carton, Pallet
• Specification: customized
• Trademark: Dachuang Kehua
• Origin: China
• HS Code: 3910000000
• Production Capacity: 1000000 Sqm/Week

Product Description

Product Description

Thermally Conductive Silicone Sheet
(Also referred to as a thermal silicone pad or thermal interface sheet)

Thermally conductive silicone sheets are engineered to deliver outstanding thermal conductivity and robust pressure resistance, making them an ideal solution for thermal management in today's electronics industry. They serve as a highly effective alternative to traditional thermal grease or mica sheets, offering improved reliability and performance in cooling applications.

Designed for user-friendly integration, these sheets support automated assembly processes and simplify routine maintenance, combining precision design with functional practicality.

Available in customizable thicknesses and hardness levels, thermally conductive silicone sheets can be tailored to fit diverse design needs. Their flexibility allows them to fill air gaps in thermal conduction paths and compensate for mechanical tolerances between heat sinks and electronic components. By eliminating the need for ultra-precise surface machining-often required to address flatness and roughness variations-they increase the effective contact area between heat sources and heat sinks. This enhances heat dissipation efficiency while also reducing manufacturing complexity and cost.

Our Advantages

Thermally Conductive Silicone Sheets: Advanced Heat Management Solutions

Thermally conductive silicone sheets are essential components in modern thermal interface management, delivering efficient and dependable heat dissipation across a broad range of electronic and industrial applications. Unlike standard silicone materials, these sheets are engineered with thermally conductive fillers, making them ideal for transferring heat away from temperature-sensitive components such as CPUs, power modules, batteries, and LED systems.

Key Features of Thermally Conductive Silicone Sheets

Thermally conductive silicone sheets combine high thermal performance with mechanical flexibility and electrical insulation-qualities that make them an optimal choice for compact, high-efficiency system designs.

1. Excellent Thermal Conductivity

These sheets are specifically designed to transfer heat efficiently from critical components to heat sinks or enclosures.

• Thermal conductivity typically ranges from 1 to 10 W/m·K, depending on the type and loading of thermally conductive fillers like ceramics, graphite, or metal oxides.

• This capability ensures consistent thermal performance, reduces the risk of component overheating, and supports long-term system reliability.

2. Superior Flexibility and Conformability

Thanks to the elasticity of the silicone matrix, the sheets:

• Adapt easily to surface irregularities and fill microscopic air gaps between contact surfaces.

• Maintain low thermal resistance and ensure continuous contact in tight or uneven assemblies-ideal for densely packed electronics.

3. High Electrical Insulation

Even with enhanced thermal conductivity, these sheets maintain excellent dielectric strength:

• Dielectric strength typically exceeds 10 kV/mm, providing reliable electrical isolation in high-voltage environments.

• This makes them suitable for applications requiring both thermal management and insulation, improving safety and system protection.

4. Wide Temperature Resistance

Built for durability in extreme environments, these sheets:

• Operate effectively within a temperature range of -50°C to +200°C.

• Are ideal for use in automotive, aerospace, power electronics, and outdoor LED systems, where exposure to temperature extremes is common.

5. Strong Chemical and Environmental Resistance

The silicone base naturally resists:

• Moisture, UV radiation, ozone, and a variety of chemicals.

• This ensures reliable, long-term performance even under harsh environmental conditions.

6. Customizable for Diverse Applications

Thermally conductive silicone sheets are available in various:

• Thicknesses, hardness ratings (Shore A), and surface finishes (smooth, textured, adhesive-backed).

• They can also be die-cut, laminated, or custom-shaped for seamless integration into automated production lines or specialized equipment designs.

Product Parameters

Technical Data Sheet

	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.

Product applications

Common Applications

Thermally conductive silicone sheets are widely used in:

• Consumer Electronics: Laptops, mobile devices, charging adapters

• Automotive Systems: Battery packs, ECUs, thermal management modules

• LED Lighting: Heat dissipation pads for LED fixtures

• Telecom & Servers: Thermal interface materials for CPUs, memory chips, and network hardware

• Industrial Power Equipment: Inverters, motor controllers, and power converters

Our Production

Production Management Workflow for Dachuang Kehua Thermal Conductive Silicone Sheet
1. Raw Material Preparation

• 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

 

2. Formula Development

• 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

 

3. Mixing & Compounding

• 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

 

4. Calendering/Forming

• 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

 

5. Post-Curing & Annealing

• 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

 

6. Precision Cutting

• 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

 

7. Quality Assurance

• 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

 

8. Packaging & Logistics

• 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)

Company Profile

Innovating Silicone Solutions for a Sustainable Future

Company Overview

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.

Core Business Segments

• Silicone Rubber & Foam Sheets

• Silicone Tubes & Strips

• Oil Seals & Custom-Molded Silicone Components

Industries We Serve

• 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

Core Competencies

1. Technological Innovation

• 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.

2. International Certifications

• Quality Management: ISO 9001, IATF 16949

• Regulatory Compliance: UL/CUL UL157, RoHS 2.0, REACH, SGS

3. Customization Capabilities

• Tailored solutions in density, hardness, and cell structure (open-cell or closed-cell)

• Full-service support: Die-cutting, lamination, adhesive backing and prototyping

 

Product Portfolio

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

R&D & Quality Excellence

• 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

Global Market Presence

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

Why Choose Dachuang Kehua?
Advanced R&D: Constant innovation in high-performance silicone materials
Comprehensive Solutions: From raw materials to finished, application-ready products
Reliable Quality: Stringent QC systems and full traceability across all production stages
Global Standards: Fully aligned with EU, U.S., and automotive regulatory requirements

Contact us today to discuss your custom silicone material needs.

Mission & Vision

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.

Certifications