| Customization: | Available |
|---|---|
| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
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Ceramicized silicone rubber strip is a novel non-toxic, environmentally friendly, and fire-resistant sealing strip, featuring excellent flame retardancy, high and low-temperature resistance, and aging resistance. Under high temperatures of 500°C, it can sinter into a ceramic-like substance. This ceramicized material remains intact at 1000°C for 90 minutes without melting, powdering, or dripping, maintaining fire-resistant integrity and effectively blocking the spread of flames and toxic smoke.
Key Features:
Excellent flame retardancy, with a flammability rating: UL94 V0;
Ceramicizes upon exposure to fire;
Outstanding aging resistance;
Exceptional high and low-temperature resistance;
Non-toxic and eco-friendly, smoke toxicity hazard rating: ZA1;
Fire resistance limit: Withstands 1000°C for 90 minutes without melting, powdering, or dripping.
3.Parameters
DC 600 Ceramized Refractory Silicone Rubber - Technical Specification Table
| Property | Unit | Value / Description | Test Method |
|---|---|---|---|
| Color | - | Light Green / Light Green+Yellow | Visual Inspection |
| Appearance | - | Smooth Surface, Flexible | - |
| Odor | - | Odorless | - |
| Halogen Content | - | Halogen-Free | IEC 61249-2-21 |
| Toxicity | - | Non-toxic, RoHS & REACH Compliant | RoHS, REACH |
| Property | Unit | Specification | Test Method |
|---|---|---|---|
| Hardness | Shore OO | 25 ± 5 | ASTM D2240 |
| Thickness | mm | 0.5 - 50 | ASTM D374 |
| Density | g/cm³ | 1.8 ± 0.2 | ASTM D792 |
| Tensile Strength | MPa | 0.08 - 0.32 | ASTM D412 |
| Elongation at Break | % | ≥ 40 | ASTM D412 |
| Compression Set | % | ≤ 25 (100ºC, 24h) | ASTM D395 |
| Tear Strength | kN/m | ≥ 1.5 | ASTM D624 |
| Property | Unit | Specification | Test Method |
|---|---|---|---|
| Thermal Conductivity | W/m·K | 1.0 ± 0.2 | ASTM D5470 |
| Operating Temp. Range | ºC | -60 ~ 200 | - |
| Flame Exposure Limit | ºC | Up to 1200 (Ceramized State) | Open Flame Test |
| Ceramization Onset Temp | ºC | ~280 | In-house Test |
| Thermogravimetric Loss | % | < 1.0 (150ºC, 24h) | TGA |
| Ceramic Residue Strength | - | Rigid, Pressure-Resistant Shell | Torch Simulation |
| Property | Unit | Specification | Test Method |
|---|---|---|---|
| Volume Resistivity | Ω·cm | ≥ 1.0 × 10¹³ | ASTM D257 |
| Dielectric Strength | kV/mm | > 6 | ASTM D149 |
| Insulation Resistance | MΩ | ≥ 10 | IEC 60167 |
| CTI (Tracking Index) | V | ≥ 600 | IEC 60112 |
| Property | Unit | Specification | Test Method |
|---|---|---|---|
| Chemical Resistance | - | Water, weak acid/alkali proof | Immersion Test |
| Weather Resistance | - | Excellent | QUV Aging (ASTM G154) |
| UV Resistance | - | Excellent | Outdoor Exposure Test |
| Oxygen Index (LOI) | % | ≥ 28 | ASTM D2863 |
| Property | Unit | Specification | Notes |
|---|---|---|---|
| Roll Width | mm | 1000 / 1200 | Custom sizes available |
| Cutting Tolerance | mm | ± 0.2 | Die-cutting, CNC, Laser |
| Lamination Compatibility | - | PET, PI, Mica, Adhesives | Multi-layer processing supported |
| Ceramic Expansion Ratio | % | 0-5% (low expansion) | Shape stable after firing |
| Adhesion / Bonding | - | Compatible with common adhesives | Surface treatment recommended |
---Innovative Material Solutions for Industrial Excellence
Dachuang Kehua specializes in advanced material technologies designed to meet the demands of modern industries such as automotive, electronics, energy storage, and construction. Our product portfolio focuses on thermal management, sealing, insulation, and vibration control, ensuring reliability, safety, and efficiency in high-performance applications. Below are our core product lines:
Sealing Components
Battery pack sealing rings (IP67/IP68)
Liquid cooling plate support pads
Cushioning & Filling
EV inter-cell filling foam (thermal runaway prevention)
Vibration-damping cushions for industrial equipment
Teflon & Ceramized Silicone Products
Fireproof barriers (ceramicizing at 500°C+)
Chemically resistant liners/gaskets
Mica-Based Solutions
Cell spacers for batteries
Heat-insulating sheets (1000°C+ resistance)
Polyurethane Foam (PU)
CR/EPDM variants for weather-resistant seals
Melamine foam for acoustic insulation
Lightweight Insulation Sheets
PP/PC insulating layers
PEF (Polyethylene foam) & aerogel composites
MPP Insulation
Electromagnetic shielding applications
Aerogel-Enhanced Materials
Ultra-thin, high-performance insulation for aerospace/EVs
Multi-Material Expertise: Combines silicone, PU, and ceramic technologies.
EV-Centric Solutions: 60% of products support battery/charging systems.
Extreme Environment Focus: Materials rated for -60°C to 1000°C.
Typical Clients: EV manufacturers (battery/PACK), 5G infrastructure suppliers, aerospace OEMs.
Base Polymers:
High-purity solid or liquid silicone rubber (HTV or LSR grade) with excellent thermal stability and processability.
Ceramizing Fillers:
Proprietary inorganic additives that vitrify under high heat to form a rigid ceramic barrier.
Functional Additives:
Curing agents (typically platinum-catalyzed or peroxide-based)
Flame retardants (non-halogenated, UL 94 V-0 grade)
Thermal stabilizers and structural enhancers
Colorants (non-toxic, high-temperature resistant)
Optional: Antistatic or conductive agents for specific applications
Regulatory Compliance:
All raw materials must conform to relevant standards such as RoHS, REACH, UL, and if applicable, FDA or automotive/military specifications.
Define target parameters:
Density, hardness, flexibility
Thermal resistance (up to 1200°C), ceramization behavior
Electrical insulation, structural integrity post-burning
Conduct bench-scale trials to optimize:
Ceramization onset temperature and structural performance
Foaming ratio (if applicable)
Cure cycle (temperature and time)
Surface finish and dimensional stability
Maintain a digital formulation logbook for version control, traceability, and continuous improvement.
Process Types:
HTV: Internal mixing with precise batch ratios
LSR: A/B component metering and inline mixing
Equipment:
Double planetary mixers
Internal kneaders
Twin-screw compounders
Vacuum mixers (for bubble elimination)
Key Process Controls:
Degassing for void-free compound
Homogeneity of ceramic and elastomer phases
Viscosity measurement and consistency
Molding Techniques:
Compression molding for sheets, slabs, thermal pads
Injection molding for precision or custom-shaped components
Curing Parameters:
Temperature: 120-180°C (initial cure)
Time: 5-20 minutes, dependent on part thickness and geometry
Ceramization Preparation:
Formulation ensures vitrification starts around 280-300°C
End-use exposure results in a durable ceramic structure (up to 1200°C)
Process:
Secondary heat treatment at 200°C for 2-4 hours
Purpose:
Enhance mechanical properties
Eliminate volatiles
Stabilize product for high-spec applications (e.g., aerospace, EV batteries)
Machining Options:
CNC cutting
Laser or waterjet cutting
Die-cutting for high-volume shapes
Value-Added Processing:
Adhesive backing lamination
Surface film application (PET, PI, mica, etc.)
Punching or precision slitting
Mechanical Testing:
Hardness (Shore OO)
Tensile strength, elongation
Density and compression set
Thermal Testing:
Thermal conductivity
Heat resistance and fire simulation
Ceramization quality and structural rigidity post-burn
Electrical Testing:
Volume resistivity
Dielectric strength
Dimensional & Surface Checks:
Thickness, flatness, bubble uniformity
Cell structure (open vs. closed, if foamed)
Certifications:
Implement QA under ISO 9001, with optional compliance to ISO 13485, IATF 16949, or UL 94 V-0 depending on end-use.
Packaging Materials:
Use clean, non-contaminating films or boxes, anti-static if needed
Labeling Information:
Batch number
Production date
Product code and specifications
Storage Conditions:
Cool, dry, UV-protected environment
Avoid prolonged humidity exposure
Maintain complete records for:
Formulation versions and production recipes
Batch production logs
QC test reports and certificates of analysis
Material safety data sheets (MSDS)
Non-conformance records and customer feedback
Digital tracking via ERP / MES systems is recommended for full traceability.
Calibrate key equipment on a scheduled basis
Train operators on material handling and safety protocols
Use real-time data monitoring to track:
Yield rates
Scrap rates
Downtime and cycle times
Implement preventive maintenance across all mixing and molding systems
The main application areas of silicone rubber products include new energy vehicles, doors & windows/curtain walls, building walls, and the electronic circuit industry, among others. Dachuang delves into market applications, developing and launching a series of silicone rubber products tailored to various fields, fully meeting the needs of diverse industries. Additionally, we provide customized services and integrated solutions based on the specific requirements of different users.
Innovating Silicone Solutions for a Sustainable Future
Hangzhou Dachuang Kehua is a national high-tech enterprise and a pioneer in advanced silicone material solutions. Founded in 2020 and headquartered in Hangzhou's Qingshanhu Science and Technology Corridor, we integrate R&D, production, and sales to serve global industries with cutting-edge material technologies.
Key Stats:
51-100 employees (30% R&D specialists)
10+ patents in silicone foaming and composites
5,000+ tons annual production capacity
DC800 Series Foamed Silicone:
Self-foaming technology (no external agents)
Wide density range (0.05-0.5g/cm³) for customizable cushioning/sealing
DC400 Fireproof Series:
Ceramicizes at 500°C, preventing thermal runaway in EV batteries
Quality: ISO9001, IATF16949 (automotive)
Safety: UL94 V-0 flame retardant, EU RoHS/REACH
Sustainability: SGS-certified low VOC emissions
| Industry | Challenge | Our Solution |
|---|---|---|
| EV Batteries | Cell expansion stress | DC800 cushioning pads (20% compression set) |
| Energy Storage | Fire risks | DC400 ceramicized barriers |
| 5G Base Stations | Weather degradation | UV-resistant sealing strips |
Client: Top 3 Global EV Manufacturer
Problem: Battery fires due to thermal propagation.
Solution:
DC400 ceramicized silicone layers between cells.
Result: 30-minute fire containment (exceeding GB38031-2020 standard).
Client: Tier-1 Energy Storage Supplier
Problem: Heavy thermal pads reduced portability.
Solution:
DC10 aerogel-infused thermal pads (0.8W/mK conductivity, 50% lighter).
Result: 15% weight reduction without sacrificing heat dissipation.
Zero-waste water: Closed-loop recycling system.
Low-carbon materials: 30% bio-based silicone in development.
Recyclable foamed silicone (DC800-E series).
Halogen-free flame retardants (meeting IEC 61249-2-21).
Collaborating with Hangzhou Low-Carbon Lab to achieve carbon-neutral production by 2028.
"Dachuang Kehua's DC800 foam solved our battery sealing challenges with exceptional temperature resistance. Their team's responsiveness was outstanding."
- Engineering Director, Leading EV Battery OEM
*"The only supplier that met our UL94 V-0 and IP68 requirements simultaneously. Highly recommend for critical applications."*
- Procurement Manager, Global 5G Infrastructure Co.
End-to-end customization (from R&D to mass production)
Faster lead times: 15 days for samples, 30 days for bulk orders.
24/7 technical support with on-site troubleshooting available.
2025 Goal: Launch DC1000 Series-the world's first self-healing silicone foam for aerospace.
Long-Term Mission: Drive the global transition to sustainable industrial materials.
Let's Innovate Together!
We are a certified factory specializing in advanced polymer materials and electronic adhesives, with our own R&D center and production facilities in Hangzhou, China.
Yes, we offer comprehensive OEM/ODM solutions including:
Private label packaging
Custom formulations (colors, hardness, additives)
Proprietary material development
All while strictly protecting your brand IP and market interests.
We're actively expanding our global network and welcome inquiries from qualified partners. Distributors enjoy:
Priority technical support
Market-specific pricing
Co-branding opportunities
Contact our partnership team to discuss territory availability and program details.
We provide free samples (customer pays shipping) for qualified inquiries. Simply:
Share your application requirements
Specify desired materials
Provide shipping details
Most samples ship within 72 hours of request approval.
Prototypes: 3-7 business days
Standard orders: 10-15 business days
Large/custom orders: 15-30 business days
Expedited options available
Our streamlined workflow:
Consultation: Technical requirements review
Quotation: Volume pricing with MOQ options
Deposit: 30% to initiate production
Quality Check: Pre-shipment inspection reports
Balance Payment: Before dispatch
Shipping: With real-time tracking
We support flexible global shipping:
Express: DHL/UPS/FedEx (3-5 days)
Air Freight: (5-10 days)
Sea Freight: (20-45 days)
Customs clearance assistance available
All products undergo:
Raw material inspection
In-process quality checks
Final batch testing (with certificates)
Pre-shipment verification
Our engineers provide:
Application analysis
Material compatibility testing
Failure mode evaluation
Regulatory compliance guidance.
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