High-Density Silicone Foam: Extreme Environment Solution

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

Product Description

Product Description

High-Density Micro-Foamed Silicone
A premium performance material, high-density micro-foamed silicone is designed for demanding applications requiring exceptional durability, thermal stability, and chemical resistance. Manufactured from resilient, high-purity silicone, this foam sheet offers outstanding resistance to heat, UV radiation, ozone, weathering, and a wide range of aggressive chemicals.

Non-toxic and chemically inert, it maintains consistent physical properties across a wide temperature range of -60°C to +230°C. Unlike conventional foams, high-density silicone foam resists drying, cracking, or degradation over time, delivering long-term reliability even in harsh environments.

These attributes make it an ideal solution for high-temperature, chemically intensive, or outdoor industrial applications where traditional foam materials fall short.

 

HIGH DENSITY FOAMED SILICONE - KEY FEATURES

1. Exceptional Thermal Stability

• Operates effectively within a wide temperature range from -60°C to +230°C

• Maintains form and function without deformation under extreme heat or cold

• Provides excellent thermal insulation due to trapped air cells within the foam matrix

2. Superior Environmental & Chemical Resistance

• Inherently resistant to ozone, UV radiation, water, oil, acids, alkalis, and a wide range of chemicals

• Long-term durability in both indoor and outdoor environments

• Low flammability and resistance to aging, discoloration, and environmental degradation

3. High Elasticity and Mechanical Strength

• Made from premium-quality silicone, offering high resilience and elasticity

• Excellent shock absorption, vibration isolation, and impact resistance

• Withstands tearing, abrasion, and mechanical fatigue over extended use

4. Lightweight Yet Dense Structure

• Cellular composition delivers reduced weight while maintaining mechanical integrity

• High-density format ensures improved strength, dimensional stability, and superior surface finish

5. Sealing, Cushioning & Insulation Performance

• Compressible and recoverable under stress, ideal for gaskets, pads, seals, and cushioning

• Available in open-cell (breathable, sound-absorbing) or closed-cell (moisture-resistant, sealing) variants

• Excellent for applications involving acoustic dampening, thermal barriers, or vibration control

6. Biocompatibility & Regulatory Compliance

• Non-toxic, hypoallergenic, and safe for sensitive environments

• Available in medical- and food-grade options compliant with FDA, REACH, and RoHS standards

• Used in medical cushioning, infant care, and food-contact applications

7. Electrical Insulation Properties

• Reliable dielectric performance, even in foam form

• Suitable for electronic gasketing, insulating pads, and protective housings in sensitive equipment

8. Manufacturing Flexibility & Customization

• Compatible with molding, extrusion, die-cutting, and other forming processes

• Can be tailored in density, hardness, color, and cell structure to meet specific design or functional needs

• Scalable for high-volume production while maintaining consistent quality

Conclusion

High density foamed silicone is a multifunctional, high-reliability solution for industries requiring a balance of cushioning, durability, environmental resistance, and temperature performance. Whether used in industrial sealing, medical support, consumer products, or electronics, it delivers dependable results where traditional foams fall short.

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3 High Density Foamed Silicone - Technical Parameters

High density foamed silicone combines the lightweight, cushioning benefits of foam with the durability, thermal stability, and chemical resistance of silicone rubber. The following parameters highlight the key performance metrics and customization options for this advanced material.
 

Property	Unit	Test		Typical value
Physical property
Thickness	mm	-		0.4-4
Color	-	-		Grey
Appearance	-	-		Matte
Hardness(Shore A)	HA	ASTM D2240		52±5
Density	g/cm³	ASTM D1056		1.3
Tensile strength	Mpa	ASTM D412		3.0
Elongation at break	%	ASTM D412		12.0
Shearing strength	Mpa	ASTM C273/C273M		1.2
Compressive stresses	Mpa	ASTM D1056	compressed 10%	0.4
			compressed 20%	0.9
			compressed 30%	1.6
			compressed 40%	3.0
Tearing strength	kN/m	ASTM D624		3.8
Water absorption	%	ASTM D1056		<5
Flame retardancy	-	UL94		V0(<2mmT,V1)
Electrical and Thermal Performance
Thermal conductivity	W/(m·k)	ASTM D5470		0.15
Dielectric Strengths	kv/mm	ASTM D149		3.5
Recommended temperature	ºC	SAE J-2236		-55+200
Recommended maximum temperature for indirect use	ºC			250

Our production

Production Management Workflow: High-Performance Foamed Silicone

1. Raw Material Selection

Base Materials:

• High-purity silicone rubber in liquid (LSR) or solid (HTV) form

Foaming Agents:

• Chemical blowing agents (e.g., hydrazine derivatives)

• Physical gases (e.g., nitrogen, CO2) for controlled foaming

Additives:

• Platinum-based curing agents

• Stabilizers, flame retardants

• Colorants, antistatic or conductive agents

Compliance Standards:
All raw materials must meet applicable regulations such as RoHS, REACH, and FDA, depending on end-use.

2. Formula Development & Testing

Define Target Specifications:

• Density, hardness, elasticity

• Thermal and chemical resistance

• Desired cell structure (open vs. closed), color, and texture

Lab-Scale Optimization:

• Fine-tune foaming ratio, cure time/temperature, and surface quality

• Establish benchmarks for consistent cell size and uniformity

Best Practice:
Maintain a centralized formulation database for traceability, performance history, and future enhancements.

3. Mixing & Compounding

Process Control:

• Accurate metering of A/B components (for LSR) or additive loading (for HTV)

• Thorough degassing to eliminate air entrapment

Equipment:

• Double planetary mixers

• Internal kneaders

• Two-component metering systems

Critical Checks:

• Viscosity consistency

• Mix homogeneity

• Temperature control during mixing

4. Foaming & Curing Process

Molding Techniques:

• Compression molding: Suitable for sheets and bulk forms

• Injection molding: Ideal for complex or precision parts

Foaming Activation:

• Triggered by thermal reaction or controlled gas injection for uniform cell distribution

Curing Conditions:

• Temperature: Typically 120-180°C

• Cure Time: 5-20 minutes based on product geometry and thickness

5. Post-Curing (If Required)

Secondary Heat Treatment:

• Performed at ~200°C for 2-4 hours

Purpose:

• Enhance mechanical strength

• Eliminate residual volatiles

• Improve biocompatibility for medical/food-grade applications

6. Cutting, Trimming & Shaping

Processing Methods:

• CNC, waterjet, laser, or die-cutting tailored to shape and complexity

Optional Enhancements:

• Adhesive lamination

• Surface film applications (e.g., PET, PI, mica)

7. Quality Control & Testing

Physical Tests:

• Hardness (Shore A), density, tensile strength, elongation

Thermal Tests:

• Thermal conductivity, heat resistance

Structural & Surface Checks:

• Cell structure evaluation

• Bubble distribution and consistency

• Surface flatness and dimensional accuracy

Certifications (as applicable):

• ISO 9001 (Quality Management)

• ISO 13485 (Medical Devices)

• IATF 16949 (Automotive Sector)

8. Packaging & Storage

Packaging:

• Use clean, contamination-free materials

• Anti-static bags/liners for electronic grades

Labeling:

• Lot number, manufacture date, and specifications

Storage Recommendations:

• Store in cool, dry, UV-protected conditions

• Avoid prolonged humidity or temperature fluctuations

9. Documentation & Traceability

Record Management:

• Formulation and batch production logs

• QC results and Certificates of Analysis

• Compliance documentation (RoHS, REACH, etc.)

• Customer feedback and non-conformance reports

Digital Integration:

• Use ERP/MES systems for real-time tracking of inventory, production history, and quality data

Best Practices for Process Excellence

• Calibrate equipment on a defined schedule

• Implement a preventive maintenance plan

• Regular training programs for operators and technicians

• Track production KPIs such as:

  • Yield rate

  • Scrap rate

  • Cycle time

  • Downtime analytics

Dachuang Kehua's structured production workflow ensures consistent product quality, regulatory compliance, and long-term reliability-supporting high-performance applications across automotive, medical, energy, and electronics industries.

Quality management

Foamed Silicone Production - Quality Control Key Points

1. Raw Materials Inspection

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

 

2. Compounding / Mixing Control

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

 

3. Molding & Foaming Process Control

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

 

4. Thermal & Mechanical Properties

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

 

5. Chemical & Environmental Resistance

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)

 

6. Surface Quality & Appearance

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)

 

7. Final Product Testing & Documentation

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

 

Quality Tools to Support Management

• 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

Packaging

Category	Description
Packing Type	- Roll packing (standard: 30-50 kg/roll). - Customized packing available (per customer requirements).
Packing Material	- Standard: Inner PE film + outer woven bag. - Reinforced: Inner centrifugal paper + outer woven bag; palletized upon request.
Shipping Marks	Neutral packing with printed marks (customizable labels if needed).
Lead Time	1-5 days after PO confirmation and 30% advance payment.
Delivery Time	Guaranteed on-time delivery; expedited options for urgent orders.
Freight Options	- Sea: FCL/LCL. - Air: Fast shipping for time-sensitive needs.
Special Services	- Custom cutting/die punching. - Reversed adhesive backing available.

 

Product applications

Applications of   High-density microfoam silicone foam

 

 

 

 

Certifications

 

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.

 

 

2. Major Certifications

(1) Compression Set Performance

• 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.

(2) Dielectric Strength

• 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.

(3) Environmental & Safety Compliance

• 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.

(4) Low-Temperature Flexibility

• 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.

 

3. Core Advantages

1. Broad Temperature Resistance

   • Operational range: -55°C to 125°C

   • Maintains stable performance across 1000 thermal cycles

2. Reliable Mechanical Strength

   • Compression set ≤ 4.2% across all variants

   • Resilient with minimal long-term fatigue

3. Superior Electrical Insulation

   • Dielectric strength ≥ 3.0 kV/mm

   • Optimized for sensitive electronic insulation needs

4. Full Environmental Certification

   • Certified RoHS, REACH, and halogen-free

   • Suitable for medical, consumer, and food-grade applications

5. Customizable & Versatile Product Line

   • Available in grades from DC800-015 to DC800-055

   • Customizable in thickness, hardness, and functional attributes

 

4. Key Application Areas

• 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

 

5. Quality Assurance

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

 

Conclusion

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.

Company Profile

 

Innovating Silicone Solutions for a Sustainable Future

Company Overview

Hangzhou Dachuang Kehua is a national high-tech enterprise specializing in the R&D, production, and sales of high-performance silicone materials. Headquartered in Qingshanhu Science and Technology City, Hangzhou-a key hub in China's National Science and Technology Innovation Corridor-we combine cutting-edge research, advanced manufacturing, and industry expertise to deliver innovative silicone solutions for global industries.

Core Business

• Silicone Rubber & Foam Sheets

• Silicone Tubes & Strips

• Oil Seals & Custom Rubber Components

Key Industries Served

New Energy Vehicles (NEV) & EV Batteries
Energy Storage Systems (ESS) & Solar (PV)
5G Communications & Electronics
Construction & Industrial Machinery
Aerospace, Medical, and Consumer Goods

 

Core Strengths

1. Technological Leadership

• 15+ Years of R&D Expertise - Proprietary formulations and advanced production processes.

• DC800 Series Liquid Foamed Silicone - No external foaming agents, eco-friendly, superior flame retardancy (UL94 V-0), and IP68 sealing.

• Automotive-Grade Materials - Compliant with IATF16949 for EV/ESS applications.

2. Industry-Leading Certifications

• Quality Systems: ISO9001, IATF16949

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

3. Customized Solutions

• Tailored density, hardness, and structure (open/closed-cell).

• Die-cutting, laminating, and adhesive backing services.

 

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 Assurance

Advanced Testing & Manufacturing

• 30+ Performance Tests: Tensile strength, thermal aging, flame retardancy, salt spray.

• Automated Production: Precision mixing, vulcanization, cutting for consistent quality.

• Joint Labs with Research Institutes: Accelerating material innovation.

Market Reach & Clients

We partner with global industry leaders, including:

• CATL, BYD (EV batteries)

• Huawei (5G infrastructure)

• Top Energy Storage & Solar Manufacturers

 

Why Choose Dachuang Kehua?

High-Tech R&D - Continuous innovation in silicone materials.
End-to-End Solutions - From raw material to finished product.
Reliable Quality - Strict QC, traceable production.
Global Compliance - Meets EU, US, and automotive standards.

Contact Us for tailored silicone solutions!

 

Mission & Vision

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.

Management Highlight    
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