High-Performance Thermal Silicone Pads for Electronics

• 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 called thermally conductive silicone pad, thermally conductive silicone sheet)

      It has good thermal conductivity and high-grade pressure resistance, which meets the current demand for thermally conductive materials in the electronics industry, and is a binary alternative to silicone grease thermal paste and mica sheets. The best product for the cooling system. This type of product is easy to install, conducive to automated production and product maintenance, and is a new material with great craftsmanship and practicability.

     The thickness and hardness of the thermally conductive silicone sheet can be adjusted according to different designs, so the heat dissipation structure and the chip size tolerance can be bridged in the thermal conduction channel, reducing the tolerance requirements for the contact surface of the heat sink in the structural design, especially for The difference in flatness and roughness will greatly increase the cost of the product if the machining accuracy is improved. Therefore, the thermally conductive silicone sheet can fully increase the contact area between the heat-generating components and the radiator, transfer heat flow, reducing the production cost of the radiator.

Our Advantages

Thermally conductive silicone sheets are essential for efficient heat transfer in various applications. These specialized silicone products go beyond standard sheets, offering enhanced thermal performance for everything from laptops to LED lights. 

Properties of Thermally Conductive Silicone Sheets
These sheets combine flexibility, electrical isolation, and thermal conductivity. They offer a high-performance solution for diverse applications.
Thermal Conductivity: Conductivity varies with filler type and amount, from 1 to 10 W/mK.
Flexibility: The silicone base remains flexible for easy installation and conforms to irregular surfaces.
Electrical Insulation: Silicone's dielectric strength provides excellent electrical insulation and safety.
Temperature Resistance: These sheets typically withstand -50°C to 200°C, making them suitable for high-temperature applications and preventing damage from extreme cold. However, consider specific silicone rubber compounds and the intended use when selecting a product.

 

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.

 

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

FAQ

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