| Customization: | Available |
|---|---|
| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
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Closed-Cell Foam Silicone: Compression-Resistant Material
Key Features of Foamed Silicone Products
Foamed silicone is a specialized category of silicone elastomers, engineered with a cellular structure containing air or gas-filled pockets. This lightweight, semi-rigid or flexible material combines the core advantages of conventional silicone with enhanced cushioning, insulation, and weight-reduction properties. Produced through chemical foaming, gas injection, or mechanical aeration during curing, foamed silicone delivers performance-driven solutions across industrial, consumer, and technical applications.
Below are the principal characteristics that define the performance and value of foamed silicone products:
1. Lightweight Structure with High Compressibility
The cellular composition significantly reduces material density, making foamed silicone ideal for weight-sensitive applications.
Offers excellent compressibility and recovery, allowing for reliable sealing, gasketing, and vibration isolation under mechanical stress.
2. Thermal Insulation and Temperature Resistance
Trapped air within the foam structure provides effective thermal insulation, minimizing heat transfer.
Maintains stable performance across a wide temperature range - from -60°C to +200°C or higher - without deformation or material degradation.
3. Environmental and Chemical Resistance
Retains silicone's inherent resistance to UV radiation, ozone, oxidation, and exposure to water and various chemicals.
Ensures long-term durability and material integrity in both indoor and outdoor environments, including industrial or corrosive settings.
4. Versatility in Cell Structure
Available in open-cell and closed-cell formats:
Open-cell foam offers breathability, sound absorption, and flexibility - ideal for cushioning and acoustic applications.
Closed-cell foam provides superior moisture resistance and is ideal for environmental sealing and thermal barriers.
5. Biocompatibility and Safety Compliance
Non-toxic, hypoallergenic, and available in medical-grade and food-grade formulations that comply with FDA, REACH, and RoHS standards.
Suitable for sensitive applications including medical padding, infant care products, and food-contact insulation.
6. Mechanical Resilience and Shock Absorption
Delivers excellent shock absorption and damping performance, protecting components from mechanical impact and vibration.
Resistant to tearing, abrasion, and material fatigue - extending product life even under dynamic loading.
7. Electrical Insulation Capabilities
Offers reliable dielectric properties, even in foam form, for use in insulating gaskets, pads, and housing in electronic devices and enclosures.
8. Manufacturing Efficiency and Customization
Compatible with molding, extrusion, and die-cutting processes, enabling high-volume production and design flexibility.
Can be engineered in a range of densities, hardness levels, and colors to meet specific application and aesthetic requirements.
| Category | Item | Value |
|---|---|---|
| General Information | Place of Origin | China (Zhejiang) |
| Brand Name | Dachuang Kehua | |
| Model Number | Anti-static Foaming | |
| Processing Services | Moulding, Cutting, Die-Cutting, Lamination |
| Physical Properties | Hardness | 16-20 Shore A | | | Density | 0.6 g/cm³ | | | Thickness Range | 2-40 mm | | | Surface Texture | Grid Pattern / Customizable | | | Cell Structure | Closed-cell (Obturator type) | | | Compression Set (22 hrs @ 70°C) | ≤15% | | | Tensile Strength | >700 kPa | | | Elongation at Break | >150% | | | Tear Strength | ≥15 kN/m (depending on density) | | | Recovery Rate | ≥98% after compression |
| Thermal & Electrical | Thermal Conductivity | 0.06 W/m·K | | | Operating Temperature Range | -60°C to +250°C | | | Peak Temperature Resistance | Up to +250°C | | | Electrical Resistivity | ≥10 Ω·cm (anti-static options available) | | | Dielectric Strength | ≥20 kV/mm (varies with thickness) | | | Flame Retardant Performance | Non-flame retardant (custom FR grades available) |
| Chemical Resistance | UV Resistance | Excellent | | | Ozone Resistance | Excellent | | | Water Absorption | ≤1% | | | Chemical Resistance | Good against mild acids, bases, and solvents | | | Oil Resistance | Moderate (custom grades for enhanced resistance) | | | Weathering Resistance | Outstanding |
| Workcraft & Customization | Machinability | Excellent for CNC cutting, die cutting, waterjet | | | Color Options | Customizable (natural, grey, red, black, etc.) | | | Surface Lamination | Optional adhesive backing, fabric lamination | | | Shape Customization | Sheets, rolls, die-cut parts, gaskets, seals | | | Certifications Available | RoHS, REACH, FDA (on request) |
Base Materials: High-purity silicone rubber (liquid or solid form)
Foaming Agents: Chemical blowing agents (e.g., hydrazine derivatives, etc) or physical gases (e.g., nitrogen, CO)
Additives: Curing agents (typically platinum-based), stabilizers, flame retardants, colorants, antistatic agents
Key Consideration: Ensure all raw materials meet relevant regulatory standards (e.g., RoHS, FDA, REACH).
Determine required density, hardness, elasticity, thermal and chemical resistance
Conduct lab-scale trials to optimize:
Foaming ratio
Cell size and structure (open vs closed cell)
Cure time and temperature
Color and surface texture
Tip: Maintain a formulation database for traceability and future improvement.
Use precise mixing ratios (A/B components for LSR or additives for HTV silicone)
Equipment: Double planetary mixers, internal mixers, or two-component metering machines
Ensure degassing to remove air bubbles before molding
Control Points:
Viscosity checks
Mixing homogeneity
Temperature control during mixing
Molding Techniques:
Compression molding: Common for sheets and slabs
Injection molding: For precise parts or high-volume production
Foaming Activation:
Thermal activation (e.g., heat triggers foaming agent)
Controlled gas injection (for consistent cell structure)
Curing Temperature: 120-180°C typical, depending on formulation
Time: 5-20 minutes based on thickness and product geometry
Additional heat treatment (e.g., 200°C for 2-4 hours) to remove volatiles and improve performance
Especially important for medical- or food-grade products
CNC, waterjet, die-cutting, or laser cutting based on shape and application
Lamination of adhesive backings or surface films if needed
Implement QC protocols at each stage:
Physical Properties: Hardness, density, tensile strength, elongation
Thermal Properties: Thermal conductivity, heat resistance
Surface & Structural: Bubble uniformity, closed/open-cell ratio
Dimensional Tolerances: Thickness, width, surface flatness
Certifications: Consider ISO 9001, ISO 13485 (medical), or IATF 16949 (automotive) depending on market
Use non-contaminating packaging materials
Label each batch with:
Lot number
Date of manufacture
Material specifications
Store in cool, dry areas, away from UV and moisture
Maintain detailed records of:
Formulations and batch recipes
Production logs
QC test results
Compliance certificates
Customer feedback or non-conformance reports
Regular calibration of machines
Implement a preventive maintenance schedule
Conduct training programs for technicians and operators
Use ERP/MES systems for inventory and process tracking
Monitor production KPIs (yield rate, scrap rate, cycle time, downtime)
Foamed Silicone Production - Quality Control Key Points| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Silicone base quality | Viscosity, purity, batch uniformity | Material CoA, viscosity meter |
| Foaming agent quality | Activation temperature, decomposition profile | DSC/TGA analysis |
| Additives | Functionality (curing agent, color, antistatic, etc.) | Visual, functional check, TDS review |
| Storage conditions | Proper labeling, shelf life, contamination-free | Warehouse audit |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Mixing uniformity | Homogeneity of compound | Visual check, small test mold |
| Degassing efficiency | Air bubble removal | Vacuum check, visual bubble count |
| Batch consistency | Color, viscosity, reactivity | Rheometer, rotational viscometer |
| Temperature control | Maintain ideal mix temp (esp. for LSR) | Digital thermometer |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Mold temperature | Consistent curing/foaming activation | Thermocouples, infrared sensors |
| Foaming uniformity | Consistent bubble size & distribution | Cross-section inspection |
| Cell structure | Closed-cell or open-cell confirmation | Microscopic or dye-penetration test |
| Curing completeness | Ensure full vulcanization | Solvent rub test, tensile strength check |
| Dimensional accuracy | Part dimensions, thickness uniformity | Vernier calipers, laser profile gauge |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Hardness | Shore A (typ. 16-20 for foamed silicone) | Shore A durometer (ASTM D2240) |
| Density | Confirm correct foaming level | Gravimetric method (ASTM D792) |
| Tensile strength | Tear resistance and stretch durability | Universal testing machine (ASTM D412) |
| Elongation | % elongation at break | Tensile test (ASTM D412) |
| Compression set | Permanent deformation after compression | ASTM D395 |
| Recovery rate | Bounce-back rate after deformation | Compression recovery test |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| UV resistance | Surface discoloration or degradation | UV chamber exposure (ASTM G154) |
| Water absorption | Measure weight increase after submersion | ASTM D570 |
| Chemical resistance | Resistance to oils, solvents, acids | Soak test in target chemical environment |
| Flame resistance | Self-extinguishing or not | UL94 or ASTM D635 (if applicable) |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Surface texture | Grid or smooth pattern quality | Visual / tactile inspection |
| Defects | Cracks, pinholes, inclusions | Visual inspection under light |
| Color uniformity | Consistent coloring across batch | Visual + colorimeter (optional) |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Traceability | Batch number, production date, operator log | Labeling + system records |
| Label accuracy | Specs, warning, certification labels | Checklist-based inspection |
| Packaging integrity | Damage, contamination, sealing | Drop test, vibration test (if needed) |
| Certifications | RoHS, REACH, FDA, etc. compliance | Third-party testing reports / CoC |
SPC (Statistical Process Control) charts
FMEA (Failure Mode and Effects Analysis)
Control Plans
First Article Inspection (FAI)
Process Capability Index (Cp, Cpk) monitoring
Internal Audits & ISO 9001/ISO 13485 compliance
Dachuang Kehua Foamed Silicone is an advanced material engineered for high-performance sealing, insulation, shock absorption, and thermal management across a wide range of industries. Its unique combination of lightweight cellular structure, flexibility, thermal stability, and chemical resistance makes it an ideal solution for demanding environments where both performance and reliability are critical.
New Energy Vehicles (NEV)
Battery PACK thermal insulation and protection
Soft-pack cell clamping and gap filling
Charging pile sealing solutions
Energy Storage Systems
Liquid-cooled cabinet sealing rings
Prismatic battery cell interlayer fillers
Thermal conduction and structural support for cooling plates
Renewable Energy & Photovoltaics
Sealing for photovoltaic energy storage inverters
Long-term weather-resistant gaskets for solar system
Telecommunications
High-precision sealing for 5G base station equipment
Protection against environmental ingress and electromagnetic interference
Construction & Industrial Infrastructure
Weatherproof sealing strips for steel structure enclosures
Office building curtain wall and window system gaskets
With its customizable density, hardness, and structure (open-cell or closed-cell), Dachuang Kehua foamed silicone is widely recognized for its adaptability in cutting-edge technologies. Whether used for electrical insulation, cushioning, or temperature control, it delivers long-lasting performance in the most challenging operating conditions.
The DC800 series from Dacchuang Kehua New Materials Co., Ltd. is a high-performance foamed silicone material engineered for demanding industrial applications. Known for its lightweight composition, exceptional elasticity, and resistance to extreme temperatures, the DC800 series is widely utilized across electronics, automotive, medical, and industrial sectors. Its performance is validated by multiple internationally recognized certifications, underscoring its quality and reliability.
Standard: ASTM D1056-20
Test Protocol: 1000 thermal cycles (-55°C to 125°C), 50% compression
Results:
DC800-015: 1.1%
DC800-020: 1.3%
DC800-025: 1.6%
DC800-030: 2.3%
DC800-035: 3.1%
DC800-042: 3.4%
DC800-045: 4.2%
DC800-050: 3.9%
DC800-055: 4.0%
Certification Body: SGS
Highlights: Demonstrates outstanding long-term resilience and thermal stability across the full series.
Standard: GB/T 1695-2005
Results:
DC800-035: 3.0 kV/mm
DC800-042: 3.1 kV/mm
DC800-045: 3.1 kV/mm
Certification Body: SGS
Highlights: Ensures excellent insulation properties for high-voltage and sensitive electronic applications.
RoHS: Fully compliant with EU Directive 2011/65/EU and its amendment (EU) 2015/863; all restricted substances within regulatory thresholds.
REACH: No SVHCs (Substances of Very High Concern) detected.
Halogen-Free: Non-detectable levels of fluorine (F), chlorine (Cl), bromine (Br), and iodine (I).
Certification Body: SGS
Highlights: Environmentally friendly and non-toxic; suitable for applications requiring strict material safety.
Standard: ASTM D1056-14
Test Protocol: 180° bend at -55°C for 24 hours
Results: No visible cracking or deformation
Highlights: Maintains flexibility and integrity in extremely low temperatures, ideal for cold-environment applications.
Broad Temperature Resistance
Operational range: -55°C to 125°C
Maintains stable performance across 1000 thermal cycles
Reliable Mechanical Strength
Compression set ≤ 4.2% across all variants
Resilient with minimal long-term fatigue
Superior Electrical Insulation
Dielectric strength ≥ 3.0 kV/mm
Optimized for sensitive electronic insulation needs
Full Environmental Certification
Certified RoHS, REACH, and halogen-free
Suitable for medical, consumer, and food-grade applications
Customizable & Versatile Product Line
Available in grades from DC800-015 to DC800-055
Customizable in thickness, hardness, and functional attributes
Electronics: Shock-absorbing pads, EMI shielding seals
Automotive: Weather seals, vibration dampening components
Medical Devices: Eco-safe materials for sensitive applications
Industrial Equipment: Durable gaskets and sealing systems
All certifications are issued by SGS, a globally recognized third-party testing body.
Traceable test reports include:
Compression Set: SUIN21080062XXMR_CN
Dielectric Strength: SHIN210805363XMR_CN
Environmental Compliance: SHAEC2116203002/4002
With a robust foundation of international certifications and tested performance metrics, Dacchuang Kehua's DC800 foamed silicone series is an ideal material choice for high-reliability and safety-critical applications. We remain committed to delivering innovative, environmentally conscious, and high-performance silicone solutions.
Hangzhou Dachuang Kehua New Materials Co., Ltd. - Pioneering Advanced Silicone Material Solutions
Hangzhou Dachuang Kehua New Materials Co., Ltd. is a leading national high-tech enterprise specializing in the R&D, production, and sales of high-performance silicone materials. Headquartered in the Qingshanhu Science and Technology City in Hangzhou, Zhejiang-an integral part of China's National Science and Technology Innovation Corridor-the company is driven by technological innovation. With a dedicated team of industry experts, Dachuang Kehua has developed a comprehensive platform encompassing R&D, manufacturing, and sales. The company collaborates with top research institutions, establishing joint laboratories that push the boundaries of silicone material applications and industrialization.
Technological Leadership
Innovative production processes and equipment, offering a diverse range of products, including liquid/solid foamed silicone, thermal conductive materials, and potting compounds.
The revolutionary DC800 Series Liquid Foamed Silicone technology requires no external foaming agents, is eco-friendly, and boasts superior weather resistance, flame retardancy, and rebound performance.
Industry-Leading Certifications
Quality management systems: ISO9001, IATF16949 (automotive industry standard).
Global certifications: UL/CUL UL157, EU RoHS 2.0, REACH, and SGS comprehensive testing.
Tailored Solutions for Diverse Industries
Products are designed to meet the needs of high-end industries such as new energy vehicles, energy storage, 5G communications, and aerospace, providing sealing, thermal conduction, cushioning, and fireproofing solutions.
Foamed Silicone: DC800 Series (low/medium/high density), DC900 Series (rigid foam), featuring IP68 sealing, shock absorption, sound insulation, and extreme temperature resistance (-55°C to 200°C).
Thermal Conductive Materials: DC10 Series thermal pads, DC21 Series potting compounds, ideal for lightweighting and heat dissipation in battery packs.
Fireproof Materials: DC400 Series ceramicized silicone rubber, designed for thermal runaway protection.
Specialty Composites: DC600 Series (foamed silicone + PTFE), offering resistance to corrosion and chemicals.
New Energy Vehicles:
Power battery PACK sealing (IP68), liquid cooling plate support, cell cushioning (absorbing expansion stress).
Charging pile waterproofing/dustproofing (IP68), pouch cell spacers.
Energy Storage Systems: Liquid-cooled cabinet sealing (IP67), cell fireproofing/insulation (ceramicized silicone).
5G Communications: Equipment housing sealing, EMI shielding, and aging resistance.
Construction & Industry: Steel structure sealing strips, photovoltaic inverters (IP67, UL94 V-0 flame retardant).
Laboratory Capabilities:
Over 30 performance tests, including mechanical properties, aging, salt spray, flammability, and electrical testing.
Advanced equipment: Universal tensile testers, thermal conductivity meters, environmental chambers, and more.
Manufacturing Process: Fully automated mixing, vulcanization, cutting, and laminating processes ensure consistent product quality.
Dachuang Kehua serves global leaders in new energy vehicles (batteries, charging piles), energy storage, rail transit, and consumer electronics, providing high-performance material solutions to industry giants such as CATL, BYD, and Huawei.
With the mission of "Empowering Industrial Upgrades Through Material Science," Dachuang Kehua is committed to continuous innovation, aiming to establish itself as a global leader in silicone materials and contribute to the sustainable development of green energy and smart manufacturing.
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