| Customization: | Available |
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| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
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This high-performance thermal grease offers excellent thermal conductivity, superior electrical insulation, and a broad operating temperature range (-50°C to 200ºC). It features outstanding stability, low viscosity for easy application, and is non-toxic, non-corrosive, odorless, non-drying, and non-soluble.A two-component silicone potting compound designed for thermal management, waterproofing, and insulation in electronic devices. It delivers exceptional thermal conductivity, flame retardancy (UL94 V-0), electrical insulation, and aging resistance. Capable of withstanding wide temperature and humidity variations, it provides long-term protection for sensitive circuits and components against stress, vibration, moisture, and corrosion-ensuring effective heat dissipation, insulation, waterproofing, and chemical resistance.
Dachuang Kehua Potting Adhesive: Superior Protection for Critical Components
Key Features & Benefits:
Exceptional Electrical Insulation
Provides superior dielectric properties to prevent short circuits and safeguard sensitive electronics against environmental hazards.
Unmatched Durability
Withstands extreme temperatures (-50°C to 200°C), moisture, and UV exposure to extend the operational lifespan of encapsulated devices.
Engineered Flexibility
Maintains elasticity post-curing to absorb mechanical stress, vibrations, and thermal expansion-ideal for automotive, industrial, and high-impact applications.
Universal Adhesion
Bonds securely to diverse substrates (metals, plastics, ceramics) without compromising component integrity or performance.
Eco-Safe Formulation
Non-toxic, halogen-free, and RoHS-compliant for use in medical devices, renewable energy systems, and other sensitive applications.
Optimized Process Efficiency
User-friendly application with rapid, predictable curing to streamline production and reduce downtime.
Chemical & Aging Resistance
Retains protective properties against oils, solvents, and corrosive agents, ensuring reliability in harsh industrial environments.
Industry-Proven Performance
Dachuang Kehua Potting Adhesive delivers robust, long-lasting encapsulation for electronics in automotive, energy storage, 5G infrastructure, and beyond-combining cutting-edge material science with stringent quality standards.
| Serial number | Testing item | Implementation Standards | Unit | Brand | ||
| DC2220 | DC2240 | DC2260 | ||||
| 1 | Viscosity A | GB/T2794-2013 | mpa-s | 5100±500 | 5100±500 | 5100±500 |
| 2 | Viscosity B | GB/T2794-2013 | mpa-s | 4900±500 | 4900±500 | 4900±500 |
| 3 | Specific Gravity | GB/13477.2-2002 | / | 0.2 | 0.4 | 0.6 |
| 4 | Operable time | GB/T13477.5-2002 | min | 5 | 20 | 20 |
| 5 | Tensile strength | GB/T528-2009 | Mpa | >0.25 | >0.35 | >0.5 |
| 6 | Elongation | GB/T528-2009 | % | >65 | >90 | >110 |
| 7 | Volume resistance | ASTM D257 | Q-cm | >1014 | >1014 | >1014 |
| 8 | Voltage resistance | ASTM D149 | kV/mm | >18 | >18 | >18 |
| 9 | Flame retardancy | UL-94 | / | V-0 | V-0 | V-0 |
| 10 | Thermal conductivity (W/m-k) | ASTM D5470 | / | 0.05 | 0.07 | 0.09 |
|
Thermally Conductive Potting Adhesives |
||||||
|
Serial number |
Testing items |
Implementation Standards |
Unit |
Brand |
||
|
DC2108 |
DC2110 |
DC2115 |
||||
|
1 |
Viscosity A |
GB/T 2794-2013 |
mpa-s |
5100±500 |
9000±500 |
20500±500 |
|
2 |
Viscosity B |
GB/T 2794-2013 |
mpa-s |
4900±500 |
8900±500 |
20000±500 |
|
3 |
Specific Gravity |
GB/13477.2-2002 |
/ |
1.7 |
1.9 |
2.1 |
|
4 |
Surface drying time |
GB/T13477.5-2002 |
min 25°C |
60 |
60 |
60 |
|
5 |
Curing time |
GB/T13477.5-2002 |
h 25°C |
24 |
24 |
24 |
|
6 |
Volume resistance |
ASTM D257 |
Qcm |
>1014 |
>1014 |
>1014 |
|
7 |
Voltage resistance |
ASTM D149 |
kV/mm |
>18 |
>18 |
>18 |
|
8 |
Flame retardancy |
UL-94 |
/ |
V-0 |
V-0 |
V-0 |
|
9 |
Thermal conductivity (W/m-k) |
ASTM D5470 |
/ |
0.8 |
1 |
1.5 |
Base Materials: The primary components of potting adhesive are silicone resins or polymers, curing agents (hardeners), and any additional fillers or additives (such as flame retardants, stabilizers, or pigments). These are carefully selected based on the desired properties, such as flexibility, temperature resistance, and electrical insulation.
Mixing: The base materials and additives are mixed in precise ratios to achieve the desired viscosity, workability, and curing characteristics. The mixture is usually done in controlled conditions to prevent contamination and ensure consistency.
The mixed ingredients are subjected to a homogenization process, where they are blended under specific conditions (such as heat or vacuum) to remove air bubbles and ensure uniform consistency. This step is crucial for preventing defects in the final product and ensuring that the adhesive performs as expected.
Additives, such as pigments or thickeners, may be incorporated during this stage to achieve the desired color, texture, or performance properties.
Depending on the formulation and the desired application, the potting adhesive mixture may undergo a degassing process. This involves placing the mixture in a vacuum chamber to remove any air trapped during the mixing process. This is important for eliminating bubbles, which could affect the final quality and electrical performance of the adhesive.
Molding: For some potting applications, the adhesive mixture is poured into molds that match the shape and size of the components to be encapsulated (such as circuit boards, sensors, or automotive parts).
Dispensing: In other cases, the potting adhesive is dispensed directly onto the components using automated dispensing equipment. This method is often used for encapsulating individual components in industrial or high-volume production settings.
The potting adhesive undergoes a curing process to harden and solidify. This can happen in two main ways:
Room Temperature Curing: Some potting adhesives are designed to cure at room temperature over a specified period. The curing agents activate at ambient temperatures, allowing for easy application without the need for external heat.
Heat Curing: In other cases, the adhesive may require a curing oven or autoclave to achieve the desired properties. Heat curing speeds up the curing process and ensures a more consistent final product.
The curing time and temperature depend on the specific formulation of the adhesive and the required performance characteristics.
After the initial curing, some potting adhesives undergo post-curing, a process that involves additional heat treatment to further enhance the adhesive's mechanical strength, chemical resistance, and thermal stability.
Post-curing can also be used to remove any residual solvents or volatile compounds from the adhesive, improving its final stability and performance.
Throughout the production process, the potting adhesive undergoes rigorous quality control checks to ensure it meets industry standards and specifications. This may include:
Viscosity and flow tests
Curing time and temperature monitoring
Electrical insulation resistance testing
Thermal stability and mechanical property evaluations
Any defective batches or deviations from quality standards are discarded or reprocessed to maintain consistency.
Once the potting adhesive has been cured and tested, it is packaged for shipment. It can be packaged in various forms, such as jars, cartridges, or bulk containers, depending on the application and customer requirements.
The final product is labeled with instructions for use, safety data sheets, and information on shelf life.
The finished product is stored under specific conditions to maintain its stability (e.g., in cool, dry environments) before being shipped to customers. Proper storage ensures the potting adhesive remains usable until it reaches the end user.
Throughout the entire process, strict quality control and safety standards are followed to ensure the potting adhesive performs optimally in its intended applications, whether that be in electronics, automotive systems, or industrial machinery.
| 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
Joint sealing in glass and stone curtain walls
Structural glazing in glass curtain wall systems
Insulated Glass Units (IGUs):
As an advanced building material, IGUs provide superior thermal insulation, soundproofing, aesthetic appeal, and reduced structural load. Typically constructed with two or three glass panes, they utilize high-strength, airtight bonding adhesives to seal the glass to an aluminum spacer frame containing desiccants. This creates a dry air gap between the panes, delivering:
Enhanced thermal and acoustic performance
Lightweight, sleek aesthetics
Frost resistance and energy efficiency
IGUs outperform conventional double-glazed windows and are globally recognized as the standard for modern architectural glazing.
Key Technical Advantages:
Silicone Sealant: UV-resistant, maintains elasticity (-40°C to 150°C), and adheres to glass, metal, and stone.
IGUs: U-values as low as 1.0 W/(m²·K), noise reduction up to 50 dB, and compliance with international standards (EN 1279, ASTM E2190).
2.Building Doors and Windows:
With the continuous improvement in people's quality of life, there is growing emphasis on energy efficiency, environmental protection, safety, noise reduction, sun protection, and durability in building doors and windows. Although sealants are auxiliary materials in the manufacturing process and account for a small portion of the total cost, they play a crucial role in determining the performance of doors and windows-particularly in waterproofing, air tightness, thermal insulation, and soundproofing.
Since most modern doors and windows are made of metal alloys, high-performance sealants with excellent adhesion between glass and metal are essential. These sealants not only provide superior weather resistance and thermal stability (withstanding extreme temperatures) but also ensure a strong, fully cured bond between dissimilar materials, achieving an effective and long-lasting seal for doors and windows.
Key Points:
Performance Requirements: Energy efficiency, noise reduction, durability.
Critical Role of Sealants: Waterproofing, air sealing, insulation, soundproofing.
Material Compatibility: Strong adhesion between glass & metal (e.g., aluminum alloys).
Durability: Weather-resistant, temperature-stable, and long-lasting bonding.
3.Prefabricated Buildings:
Prefabricated construction aligns with China's current policy focus on green development and low-carbon energy efficiency, while also reducing labor intensity and improving working conditions. It is poised to become an inevitable trend in China's construction industry.
However, waterproofing and sealing solutions for prefabricated buildings have emerged as a critical research challenge. Sealants are typically employed for waterproofing and sealing purposes. Given that building exteriors are directly exposed to atmospheric conditions-including temperature fluctuations, humidity, UV radiation, as well as uncontrollable factors like earthquakes and acid rain-the performance of these sealants is subjected to extreme demands.
Key Considerations:
Policy Alignment: Supports green, low-carbon development initiatives
Operational Advantages: Reduces manual labor and enhances worksite safety
Technical Challenge: External sealants must withstand:
Routine stressors (thermal cycling, moisture, UV exposure)
Extreme events (seismic activity, chemical corrosion)
Material Requirements: Sealants must maintain:
Long-term weather resistance
Elastic recovery after deformation
Chemical stability in harsh environments
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. - Innovating Advanced Silicone Solutions
Hangzhou Dachuang Kehua New Materials Co., Ltd. is a national high-tech enterprise focused on the research, production, and sales of high-performance silicone materials. Headquartered in Hangzhou's Qingshanhu Science and Technology City-a key hub within China's National Science and Technology Innovation Corridor-the company thrives on cutting-edge R&D and collaboration with top research institutions. With a team of industry experts, Dachuang Kehua has built an integrated platform for innovation, manufacturing, and sales, driving advancements in silicone material applications.
Technology-Driven Innovation
Proprietary production processes for liquid/solid foamed silicone, thermal conductive materials, and potting compounds.
Breakthrough DC800 Series Liquid Foamed Silicone:
No external foaming agents required (eco-friendly).
Superior weather resistance, flame retardancy (UL94 V-0), and rebound performance.
Certified Excellence
ISO9001, IATF16949 (automotive standard).
Global compliance: UL/CUL, RoHS 2.0, REACH, SGS tested.
Industry-Specific Solutions
Tailored for new energy vehicles (EV batteries, charging piles), energy storage, 5G communications, and aerospace, offering:
Sealing (IP68), thermal management, shock absorption, and fireproofing.
1. Core Products
Foamed Silicone:
DC800 Series (low/medium/high density) - IP68 sealing, vibration damping, extreme temps (-55°C to 200°C).
DC900 Series (rigid foam) - Structural support, sound insulation.
Thermal Management:
DC10 Series pads & DC21 Series potting compounds - Lightweight heat dissipation for batteries.
Fireproof Materials:
DC400 Series ceramicized silicone - Thermal runaway protection.
High-Performance Composites:
DC600 Series (silicone + PTFE) - Chemical/corrosion resistance.
2. Key Industries Served
EV/Batteries: Cell cushioning, liquid cooling plate support, PACK sealing (IP68).
Energy Storage: Fireproof insulation, cabinet sealing (IP67).
5G/Electronics: EMI shielding, housing waterproofing.
Construction/Industrial: PV inverters (UL94 V-0), steel structure seals.
Advanced Testing Lab: 30+ performance tests (thermal, mechanical, flame resistance, etc.).
Automated Production: Precision mixing, vulcanization, and cutting for consistency.
Partnering with industry leaders like CATL, BYD, Huawei, and global players in new energy, energy storage, and telecom.
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