High Coloration and High Temperature Resistance Heterocyclic Paint - Long-Lasting Color in Extreme Conditions
Product Overview
High Coloration & High-Temperature Resistance Heterocyclic Coating represents a breakthrough in functional polymer chemistry, combining heterocyclic aromatic compounds with nano-reinforced matrices to achieve unprecedented thermal stability and chromatic intensity. Designed for substrates exposed to 600°C+ thermal cycling, UV radiation, and corrosive atmospheres, this coating system delivers ASTM-certified color retention (ΔE<1.0 after 1,000 hours at 650°C) while maintaining adhesion strength >15 MPa. Ideal for aerospace, automotive, and energy sectors, it redefines durability in extreme operational environments.
Core Technology: Heterocyclic Molecular Design
The coating’s performance stems from its proprietary benzoxazine-azole hybrid backbone, synthesized through controlled ring-opening polymerization:
1. Molecular Architecture
- Benzoxazine rings: Provide crosslinking density (＞85%) and char yield (＞60% at 800°C).
- Imidazole/benzimidazole units: Enable π-π stacking for UV absorption and radical scavenging.
- Nano-ceramic integration: ZrO₂/SiO₂ hybrids (10–50nm) enhance thermal barrier properties.
2. Synthesis Process
- Monomer preparation:
- Difunctional benzoxazine monomers derived from bisphenol-F and aniline derivatives.
- Azole precursors (2-methylimidazole, benzotriazole) for heterocyclic diversity.
- In-situ polymerization:
- Solvent-free polycondensation at 180–220°C under nitrogen atmosphere.
- Targeted molecular weight (Mn=8,000–12,000 Da) for optimal film formation.
- Nano-modification:
- Hydrothermal grafting of ZrO₂@SiO₂ core-shell particles into polymer matrix.
Key Performance Advantages
1. Extreme Thermal Resistance
- Continuous service: 600°C (1,112°F) with intermittent peaks to 750°C.
- Thermogravimetric analysis (TGA):
- 5% weight loss at 480°C (N₂ atmosphere)
- Char residue: 62% at 800°C
- Low thermal expansion: CTE 28 ppm/°C (vs. 65 ppm/°C for epoxy-silicones).
2. Color Stability Metrics
- Accelerated aging tests:
- 1,000h @ 650°C: ΔE=0.8 (CIE Lab, D65 illuminant)
- QUV-B exposure: ΔE<1.5 after 3,000 hours
- Gloss retention: 85+ (60° gloss) after thermal cycling (MIL-PRF-85285E).
3. Chemical & Environmental Resistance
- Acid/alkali immersion: No blistering after 30d in 10% HCl/NaOH (ASTM D1308).
- Salt spray resistance: 2,000+ hours (ASTM B117) without undercutting.
- Hydrocarbon resistance: Withstands jet fuel (JP-8), lubricants, and hydraulic fluids.
4. Mechanical Durability
- Adhesion strength: 18–22 MPa (cross-cut test per ISO 2409).
- Abrasion resistance: ＜10mg weight loss (1,000 cycles, CS-10 wheel, ASTM D4060).
- Flexibility: Passes 3mm conical mandrel bend test at -40°C.
Industrial Applications
1. Aerospace & Defense
- Jet engine components: Compressor casings, afterburner shrouds (＞550°C).
- Hypersonic vehicle coatings: Thermal protection systems (TPS) for leading edges.
- Satellite subsystems: Radiation-resistant finishes for orbital hardware.
2. Automotive Performance
- Exhaust systems: Headers, turbocharger housings, and catalytic converter shields.
- Brake calipers: High-gloss colors resistant to brake dust and heat cycling.
- EV battery packs: Fire-retardant coatings for lithium-ion module enclosures.
3. Energy & Heavy Industry
- Gas turbine blades: Thermal barrier coatings (TBCs) for combined-cycle plants.
- Oil refinery equipment: Column internals and flare stack protection (H₂S/CO₂).
- Nuclear reactor components: Gamma radiation-stable seals and gaskets.
4. Electronics & Advanced Manufacturing
- PCB conformal coatings: UL 94 V-0 compliant for high-density circuitry.
- Semiconductor furnace parts: Contamination-free finishes for CVD chambers.
- 3D printed metal alloys: Post-processing coatings for aerospace-grade Inconel.
Formulation Specifications
| Parameter | Specification |
|---|---|
| Base Chemistry | Benzoxazine-azole copolymer + nano-ZrO₂/SiO₂ |
| Viscosity (25°C) | 450–600 cP (Brookfield RV, spindle #3) |
| Cure Schedule | 30min @ 200°C or 2h @ 160°C |
| Dry Film Thickness | 25–75 μm per coat |
| Surface Resistivity | ＞10¹² Ω/sq (ASTM D257) |
| Flame Spread Rating | Class A (ASTM E84) |
Application Guidelines
1. Surface Preparation
- Abrasive blast to SA 2.5 (ISO 8501-1) for metals.
- Plasma treatment for composites (＞45 dynes/cm surface energy).
2. Coating Methods
- Spray application: HVLP guns at 40–60 psi (＞65% transfer efficiency).
- Dip coating: Adjust viscosity to 300–400 cP for complex geometries.
- Curing: Infrared or convection ovens with ±5°C zone control.
3. Compatibility
- Substrates: Carbon steel, stainless alloys, Ti-6Al-4V, CFRP, ceramics.
- Topcoats: Compatible with polysilazane-based clear coats for enhanced gloss.
Regulatory & Safety Compliance
- REACH SVHC: Contains no substances of very high concern.
- RoHS/ELV Directive: Heavy metals <100ppm (Cd, Pb, Hg).
- VOC Content: ＜100 g/L (EPA Method 24).
- Safety Data: Non-flammable (flash point ＞150°C), non-corrosive (pH 6.5–7.5).
Packaging & Storage
- 10kg pails: Airtight containers with nitrogen blanket for shelf life extension.
- 200kg drums: UN-certified for global hazardous materials transport.
- Storage: 12 months at 15–25°C; avoid freezing below -10°C.
Sustainability Profile
- Bio-based content: 30% derived from cardanol-modified benzoxazines.
- Recyclability: Thermal depolymerization recovers 90% monomers.
- Carbon Neutrality: 40% lower CO₂/kg vs. PTFE-based high-temp coatings.
Competitive Differentiation
- Temperature Threshold: Operates 150°C higher than silicone-epoxy hybrids.
- Aesthetic Versatility: Full-spectrum colors (ΔE<1.0) unavailable in ceramic coatings.
- Application Efficiency: Single-coat coverage replaces traditional primer/topcoat systems.
- Lifecycle Cost: 50% maintenance reduction over anodized aluminum finishes.
Conclusion
The High Coloration & High-Temperature Resistance Heterocyclic Coating sets a new paradigm for extreme-environment protection, merging polymer science innovation with industrial pragmatism. Its unique heterocyclic chemistry ensures vibrant, fade-resistant colors where traditional coatings fail, while nano-ceramic reinforcement delivers unmatched thermal resilience. From jet engine components demanding precision aesthetics to refinery equipment enduring corrosive heat, this coating system empowers engineers to push performance boundaries without compromising safety or sustainability.
| Product Name | Purple heterocyclic pigment |
| Index number of Pigment Violet 23 dye | C.I. Pigment Violet 23 |
| Pigment Purple 23 structure No. | 51319 |
| Pigment Violet 23 chemical category | Dioxazine |
| CAS No. | 215247-95-3 |
| EU No. | 228-767-9 |
| Molecular formula | C34H22Cl2N4O2 |
| Molecular weight | 589.5 |
| Technical indicators | |
| Appearance | Red and purple RL |
| Color light | Similar to the standard |
| Coloring force | 100 ± 5 of the standard |
| Heat resistance | 280 °C |
| Weather resistance | Grade 7-8 |
| Water soluble matter | ≤1.0% |
| Properties | It has outstanding coloring strength and brightness, excellent heat resistance, permeability resistance and good light fastness. All properties are excellent. |
| Technology | Kneading and ball milling. |
| Usage | Mostly used for coloring ink, paint, coating, all kinds of plastic products, phthalocyanine color matching, white yellow light elimination, whitening, general type. |
| Packing | 10kg, 25kg or according to customer requirements |
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| Established | December 18, 2014 | ||
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About Beijing TDD E-commerce Co., Ltd.
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