DGK-PP DD4-5A-JC Flame-Retardant Conductive PP for Electrical Enclosures
DGK-PP DD4-5A-JC is DEYU Plastics' flame-retardant conductive polypropylene compound, engineered for electrical and electronic applications where both static dissipation and fire safety are critical. This material combines surface resistivity in the 10⁴–10⁵ Ω range with a UL94 HB flammability rating, while delivering mechanical toughness that significantly exceeds typical conductive PP compounds.
Product Overview
DGK-PP DD4-5A-JC is DEYU Plastics' flame-retardant conductive polypropylene compound, engineered for electrical and electronic applications where both static dissipation and fire safety are critical. This material combines surface resistivity in the 10⁴–10⁵ Ω range with a UL94 HB flammability rating, while delivering mechanical toughness that significantly exceeds typical conductive PP compounds.
Related DEYU Plastics material references for this selection topic: DGK-PP DD4-5A-JC flame-retardant conductive PP and DGK-PP WPP-V0 halogen-free flame-retardant PP.
What makes DGK-PP DD4-5A-JC different:
| Feature | DGK-PP DD4-5A-JC | Typical Conductive PP |
|---|---|---|
| Surface Resistivity | 10⁴–10⁵ Ω | 10⁴–10⁶ Ω |
| Flammability Rating | UL94 HB | Often not rated |
| Impact Strength | 35 kJ/m² (Izod) | 10–20 kJ/m² |
| Elongation at Break | 90% | 5–30% |
| Heat Deflection Temperature | 105°C | 90–100°C |
The "JC" designation in DGK-PP DD4-5A-JC indicates a specific formulation optimized for electrical part applications — balancing conductivity with flame retardancy, toughness, and processability.
Key applications:
Electronic equipment housings and enclosures
Electrical component housings requiring static dissipation
ESD-safe enclosures for consumer electronics
Instrument housings and control panels
Small appliance components
Electrical switchgear and control enclosures
Telecommunication equipment housings
Anti-static packaging for electronic components
Technical Foundation — What Makes This Material Perform
1. Conductive Network for Static Dissipation
DGK-PP DD4-5A-JC achieves surface resistivity in the 10⁴–10⁵ Ω range through a carefully optimized carbon black conductive network. This resistivity level provides:
Effective static dissipation — charges are safely conducted away before accumulating to damaging levels
Dust prevention — reduced electrostatic attraction minimizes dust accumulation on surfaces
ESD protection — protects sensitive electronic components during handling and in-service use
The conductive network is distributed uniformly throughout the PP matrix, ensuring consistent performance across the entire part — not just at the surface.
2. Flame Retardancy — UL94 HB Rating
DGK-PP DD4-5A-JC carries a UL94 HB flammability rating, indicating that the material is slow-burning and self-extinguishing. This rating is critical for electrical and electronic applications where fire safety is a regulatory requirement.
Conductive/anti-static modified PP typically suffers from reduced toughness when flame retardants are added. DGK-PP DD4-5A-JC addresses this challenge through optimized formulation that preserves mechanical properties while achieving the HB rating.
3. Exceptional Mechanical Toughness
The "high-impact" designation of the DD4-5 series reflects its superior mechanical properties:
| Property | Value | Significance |
|---|---|---|
| Izod Notched Impact | 35 kJ/m² | Excellent resistance to impact and crack propagation |
| Charpy Notched Impact | 29 kJ/m² | Good toughness for European standard testing |
| Charpy Unnotched Impact | No break | Exceptional ductility; does not fracture under impact |
| Elongation at Break | 90% | Highly ductile; can deform significantly before failure |
These properties make DGK-PP DD4-5A-JC suitable for components that must withstand handling, assembly stresses, and in-service mechanical loads without cracking or fracturing.
4. Thermal Stability
| Property | Value | Significance |
|---|---|---|
| Heat Deflection Temperature | 105°C (A method, 120°C) | Retains dimensional stability at elevated temperatures |
| Processing Temperature | 210–225°C | Wide processing window for consistent molding |
The 105°C HDT ensures that parts maintain their shape and function in warm operating environments — typical of electrical enclosures and electronic housings.
5. PP Matrix Advantages
DGK-PP DD4-5A-JC retains polypropylene's inherent advantages:
| Advantage | Benefit |
|---|---|
| Low density (0.965 g/cm³) | Lightweight components — 80% lighter than metal |
| Chemical resistance | Withstands acids, alkalis, solvents in industrial environments |
| Processability | Supports injection molding and extrusion |
| Cost-effectiveness | Lower cost than engineering plastics for equivalent performance |
6. Processing Flexibility
DGK-PP DD4-5A-JC supports multiple processing methods:
Injection molding — for complex electrical enclosures and housings
Extrusion — for continuous profiles and sheet products
The material's melt flow rate of 7 g/10min provides excellent flow for thin-wall and complex geometry molding.
Product Data
Core Specifications:
| Property | Value | Test Method | Notes |
|---|---|---|---|
| Product Model | DGK-PP DD4-5A-JC / DD4-5A1 | — | — |
| Base Resin | Polypropylene (PP) | — | — |
| Appearance | Black | — | — |
| Density | 0.965 g/cm³ | GB/T 1033-1986 | Lightweight — 80% lighter than metal |
| Surface Resistivity | 10⁴–10⁵ Ω | GB/T 1401-2002 | Stable static dissipation |
| Flammability | HB | UL-94 GB/T 2408-1996 | Slow-burning, self-extinguishing |
| Processing Methods | Injection molding, extrusion | — | — |
Mechanical Properties:
| Property | Value | Test Method | Notes |
|---|---|---|---|
| Tensile Strength | 21.8 MPa | GB/T 1040-2006 | — |
| Yield Strength | 22 MPa | GB/T 1040-2006 | — |
| Bending Strength | 22 MPa | GB/T 9341-2008 | — |
| Flexural Modulus | 1,023 MPa | GB/T 9341-2008 | Moderate stiffness, good flexibility |
| Izod Notched Impact | 35 kJ/m² | GB/T 1843-2000 | Exceptional impact resistance |
| Charpy Notched Impact | 29 kJ/m² | GB/T 1043.1-2008 | Good toughness |
| Charpy Unnotched Impact | No break | GB/T 1043.1-2008 | Outstanding ductility |
| Elongation at Break | 90% | GB/T 1040-2006 | High ductility |
Thermal and Flow Properties:
| Property | Value | Test Method | Notes |
|---|---|---|---|
| Melt Flow Rate (MFR) | 7 g/10min | GB/T 3682-2000 | Good flow for complex geometries |
| Heat Deflection Temperature | 105°C | GB/T 1633-2000 | A method — 120°C |
| Drying Temperature | 90°C | — | Before processing |
| Drying Time | 4–5 hours | — | — |
| Processing Temperature | 210–225°C | — | Injection molding |
| Mold Temperature | 80°C | — | Recommended |
Application Deep Dive
1. Electronic Equipment Housings and Enclosures
DGK-PP DD4-5A-JC is ideal for housings and enclosures that require both ESD protection and flame retardancy.
Why this material:
Surface resistivity of 10⁴–10⁵ Ω dissipates static charges safely
UL94 HB rating meets fire safety requirements for electrical equipment
High impact strength (35 kJ/m²) protects against drops and impacts
90% elongation at break provides ductility for snap-fit assemblies
Lightweight (0.965 g/cm³) reduces shipping and handling costs
Typical applications:
Consumer electronics enclosures
Instrument housings
Control panel covers
Electrical junction boxes
2. Small Appliance and Electrical Components
For small appliances and electrical components, DGK-PP DD4-5A-JC offers the right balance of conductivity, flame retardancy, and mechanical properties.
Why this material:
Static dissipation prevents dust accumulation on electrical contacts
HB rating provides fire safety for electrical applications
Excellent toughness withstands assembly and in-service stresses
Good thermal stability at 105°C HDT
Typical applications:
Small appliance housings
Power tool components
Electrical switchgear parts
Connector housings
3. ESD-Safe Component Packaging
For protective packaging of electronic components, DGK-PP DD4-5A-JC provides reliable static dissipation.
Why this material:
10⁴–10⁵ Ω surface resistivity safely dissipates charges
High impact strength protects components during handling
Chemical resistance protects against contaminants
Typical applications:
Anti-static trays and containers
ESD-safe packaging
Component carriers for assembly lines
4. Telecommunication and Data Equipment
Telecommunication equipment requires materials that provide ESD protection, flame retardancy, and long-term reliability.
Why this material:
Stable conductivity ensures consistent ESD performance
HB rating meets telecom equipment fire safety standards
Dimensional stability at 105°C supports reliable component mounting
Typical applications:
Telecom equipment housings
Data center components
Network equipment enclosures
Processing Guidelines
Recommended Injection Molding Parameters:
| Parameter | Value | Notes |
|---|---|---|
| Drying Temperature | 90°C | — |
| Drying Time | 4–5 hours | Ensure thorough drying before processing |
| Injection Temperature | 210–225°C | Maintain consistent temperature |
| Mold Temperature | 80°C | Recommended for optimal crystallization and surface quality |
Key Processing Considerations:
| Consideration | Importance | Guidance |
|---|---|---|
| Pre-drying | Critical | Moisture can affect surface quality; dry at 90°C for 4–5 hours |
| Temperature control | High | Maintain melt temperature within 210–225°C range |
| Shear control | Moderate | Optimize screw speed to prevent filler network disruption |
| Mold temperature | Moderate | 80°C recommended for good surface finish and dimensional stability |
Drying Requirement:
DGK-PP DD4-5A-JC contains conductive fillers that can be affected by moisture. Proper drying is essential:
Drying temperature: 90°C
Drying time: 4–5 hours
Moisture content target: <0.1%
Extrusion Processing:
DGK-PP DD4-5A-JC also supports extrusion for continuous profile and sheet production. Key considerations:
Maintain melt temperature within the recommended range
Optimize screw design for uniform filler dispersion
Ensure consistent cooling for dimensional stability
Customer Validation Scenario
Context: A manufacturer of electronic instrument housings was using a carbon black-filled conductive PP for ESD protection. The material met the resistivity requirement (5×10⁶ Ω/sq) but had two problems: (1) the material lacked flame retardancy, failing to meet UL94 HB requirements for electrical equipment, and (2) the high carbon black loading (15%) reduced impact strength, causing cracking during assembly of snap-fit features.
Problem analysis:
| Issue | Root Cause | Impact |
|---|---|---|
| No flame retardancy | Standard conductive PP not rated | Failed regulatory requirement |
| Assembly cracking | High carbon black loading reduced toughness | 8% assembly failure rate |
| Surface defects | Carbon black agglomerates | Marginal surface quality |
Trial structure:
| Parameter | Value |
|---|---|
| Trial Quantity | 500 housings (5 molding cycles) |
| Monthly Production | 50,000 housings |
| Target Surface Resistivity | 10⁴–10⁶ Ω |
| Target Flammability | UL94 HB |
DEYU solution — DGK-PP DD4-5A-JC:
DEYU recommended switching to DGK-PP DD4-5A-JC, offering:
Surface resistivity of 10⁴–10⁵ Ω — stable static dissipation
UL94 HB flammability rating — meets regulatory requirements
Izod notched impact of 35 kJ/m² — exceptional toughness
Elongation at break of 90% — ductility for snap-fit assemblies
Excellent surface quality — smooth, black finish
Validation Data Table (customer internal trial structure):
| Parameter | Existing Material (CB-PP) | DGK-PP DD4-5A-JC | Target | Improvement |
|---|---|---|---|---|
| Surface Resistivity (Ω) | 5×10⁶ | 10⁴–10⁵ | 10⁴–10⁶ | Stable |
| Flammability Rating | Not rated | HB | HB | Achieved |
| Izod Notched Impact (kJ/m²) | 12 | 35 | >25 | +192% |
| Elongation at Break (%) | 15 | 90 | >50 | +500% |
| Assembly Failure Rate | 8% | 0.5% | <2% | -94% |
| Surface Quality | Marginal | Excellent | Good | Significantly improved |
| Density (g/cm³) | 0.98–1.02 | 0.965 | <1.0 | Lighter |
Result Interpretation:
DGK-PP DD4-5A-JC delivered the required conductivity while meeting the flame retardancy requirement and dramatically improving mechanical toughness. The impact strength of 35 kJ/m² — nearly triple the existing material — eliminated assembly cracking. The 90% elongation at break provided the ductility needed for snap-fit features. The HB rating met regulatory requirements for electrical equipment.
DEYU Plastics' contribution: DEYU demonstrated that conductivity, flame retardancy, and toughness can coexist in a single PP formulation — addressing the common industry challenge where adding flame retardants to conductive PP typically reduces toughness.
Next steps: Full production validation. DEYU can provide ongoing technical support and in-process quality monitoring protocols.
Suitable Applications
| Application | Why DGK-PP DD4-5A-JC | Key Requirement |
|---|---|---|
| Electronic equipment housings | Conductivity + flame retardancy + toughness | 10⁴–10⁵ Ω, HB, 35 kJ/m² |
| Electrical enclosure components | Static dissipation + fire safety | 10⁴–10⁵ Ω, HB |
| Small appliance housings | Lightweight + ESD + flame retardancy | 10⁴–10⁵ Ω, HB |
| Instrument housings | Surface quality + dimensional stability | 10⁴–10⁵ Ω, 105°C HDT |
| Anti-static packaging | ESD protection + impact resistance | 10⁴–10⁵ Ω, high toughness |
| Telecommunication equipment housings | ESD + flame retardancy + reliability | 10⁴–10⁵ Ω, HB |
| Control panel enclosures | Static dissipation + fire safety | 10⁴–10⁵ Ω, HB |
| Snap-fit electrical components | Ductility + conductivity | 90% elongation, 10⁴–10⁵ Ω |
What Buyers Should Provide for Selection
To receive a precise recommendation for DGK-PP DD4-5A-JC applications, buyers should provide:
Target resistivity — surface or volume resistivity range (Ω or Ω·cm) with test standard
Flammability requirement — UL94 rating required (HB, V-2, V-0, etc.)
Application description — electronic housing, electrical enclosure, packaging, or other?
Part drawing — geometry, wall thickness, gate location, snap-fit features
Processing method — injection molding, extrusion
Mechanical requirements — impact strength, tensile strength, flexural modulus targets
Thermal requirements — continuous use temperature, peak temperature
Environmental conditions — chemical exposure, humidity, temperature range
Production volume — annual or monthly quantity
Cost constraints — target material cost per kilogram or per part
DEYU can support with:
Material selection for specific conductivity + flame retardancy requirements
Processing parameter optimization for consistent performance
Small-batch validation (25–100 kg) with full electrical, mechanical, and flame retardancy testing
Technical support during molding trials
In-process quality monitoring protocols
Conclusion
DGK-PP DD4-5A-JC represents a significant advancement in conductive polypropylene technology — combining reliable static dissipation (10⁴–10⁵ Ω), flame retardancy (UL94 HB), and exceptional mechanical toughness (35 kJ/m² impact, 90% elongation) in a single, cost-effective formulation.
Key takeaways:
Balanced performance — conductivity, flame retardancy, and toughness coexist in one material, addressing the common challenge where adding flame retardants to conductive PP typically compromises toughness
Ultra-high toughness — Izod notched impact of 35 kJ/m² and elongation at break of 90% — significantly higher than typical conductive PP compounds. Unnotched Charpy impact shows "no break," demonstrating exceptional ductility
Reliable conductivity — surface resistivity of 10⁴–10⁵ Ω provides effective static dissipation for ESD protection and dust prevention
Flame retardancy — UL94 HB rating meets fire safety requirements for electrical and electronic equipment
Thermal stability — HDT of 105°C ensures dimensional stability in warm operating environments
Processability — MFR of 7 g/10min supports injection molding of thin-wall and complex geometries; also compatible with extrusion
Lightweight — density of 0.965 g/cm³ — 80% lighter than metal alternatives
Application-proven — validated in electronic housings, electrical enclosures, small appliances, and ESD packaging applications
DGK-PP DD4-5A-JC is available for small-batch validation and full production orders. DEYU Plastics' technical team can provide application-specific guidance, process optimization support, and full test documentation for qualification and validation.