Special Black Pigment for Primer - Excellent Coverage and Durability
Special Black Pigment is a premium-grade carbon black engineered specifically for primer formulations requiring uncompromising coverage, substrate protection, and long-term durability. With a finely tuned particle structure and surface modification, this pigment delivers jet-black coloration while enhancing the functional performance of industrial, automotive, and marine primers under extreme environmental conditions.
Core Performance Attributes
Ultimate Coverage Efficiency
The pigment’s ultra-fine particle size (primary particles 15–25 nm, aggregates 200–300 nm) combined with a high surface area (180–220 m²/g, BET method) achieves 99.5% light absorption at 550 nm wavelength. In full-shade primer systems, it provides hiding power of ≤20 μm dry film thickness (ISO 6504-3), outperforming conventional furnace blacks by 30–40% in opacity. The controlled structure (DBP absorption: 120–140 mL/100g, ASTM D2414) ensures optimal spacing between particles, maximizing substrate coverage with reduced pigment loading (4–6% typical dosage).
Advanced Durability Profile
- Corrosion Resistance: Enhances salt spray performance to 1,500+ hours (ASTM B117) in epoxy primer systems
- Chemical Stability: Resists immersion in pH 2–12 solutions (ISO 2812-1) and hydrocarbon solvents (ASTM D1308)
- Thermal Endurance: Stable up to 300°C (DIN 53775) for powder-coated primers requiring high-temperature curing
- UV Protection: Carbon matrix structure blocks 98% UV-A/UV-B radiation (ISO 16474-3), preventing substrate degradation
Processing Advantages
Surface-treated with proprietary oxidation technology, the pigment demonstrates exceptional dispersion characteristics (Hegman grind ≤8 μm, ASTM D1210) in both solvent-borne and water-based systems. Low viscosity impact (≤20% increase at 6% loading) maintains spray application viscosity under HVLP conditions. Compatible with all major resin types including:
- Epoxy/polyamide systems for metal substrates
- Alkyd primers for wood protection
- Polyurethane tie-coats for composite materials
Application-Specific Benefits
Automotive Primers
- Meets OEM adhesion standards (GM 9505P, Ford BI 169-09)
- Provides E-coat compatibility with throw power ≥80% (ASTM D7640)
- Enables stone-chip resistance per GMW14700 Grade A
Industrial Maintenance
- Zinc-rich primers achieve 95% zinc dispersion (ASTMD6580)
- Compatible with inorganic silicate systems for high-temperature substrates
- Reduces pinhole formation in high-build applications (≥250 μm DFT)
Marine & Offshore
- Passes NORSOK M-501 cyclic testing (25 cycles)
- Enhances cathodic protection in underwater coatings
- Resists biofouling when combined with cuprous oxide
Aerospace
- Meets Boeing BMS 10-83 Type II chromate-free specifications
- Maintains dielectric properties for radar-absorbing coatings
- Withstands thermal cycling (-65°C to +150°C, MIL-STD-810)
Technical Specifications
- Color Index: C.I. Pigment Black 7
- CAS No.: 1333-86-4
- Volatile Content: ≤1.5% (ISO 787-2)
- Ash Content: ≤0.2% (ISO 1125)
- pH Value: 6.5–8.5 (5% aqueous dispersion)
- Conductivity: 1,500–2,000 μS/cm (ISO 787-14)
Formulation Guidance
For Water-Based Primers
- Pre-disperse using polyacrylate dispersants (30–40% active)
- Mill with zirconium silicate beads (1.0–1.2 mm diameter)
- Adjust conductivity with <2% glycol ethers
In Solvent Systems
- Optimize wetting with 0.5–1.0% phosphate ester additives
- Use high-shear mixing (≥2,000 rpm) for deagglomeration
- Balance rheology with hydrophobic fumed silica
Powder Coating Integration
- Premix with 2–3% flow control agents before extrusion
- Maintain extrusion temperature ≤120°C
- Post-add 0.1–0.3% carbon black masterbatch for tone adjustment
Sustainability & Compliance
- REACH registered with full SDS disclosure
- PAHs content ≤0.1 ppm (IP 346 method)
- Carbon footprint: 1.2 kg CO₂/kg pigment (cradle-to-gate LCA)
- Manufacturing process utilizes 90% recycled thermal energy
Packaging & Storage
Available in 25 kg multi-walled paper/PE bags with UV-resistant outer layer. Bulk quantities supplied in 1,000 kg FIBC containers featuring moisture-proof liners. Store in dry conditions (<40% RH) at 15–25°C to maintain dispersibility. Shelf life: 36 months from production date.
Technical Support Services
- Substrate-specific primer formulation development
- Electrochemical impedance spectroscopy (EIS) testing
- Accelerated corrosion testing per ASTM B117/G85
- Dispersion optimization workshops
Special Black Pigment redefines primer performance by combining intense black coloration with multi-functional protective properties. Its engineered particle morphology addresses critical challenges in modern coating systems – from preventing underfilm corrosion in automotive applications to withstanding extreme weathering in offshore environments. For formulators seeking to build primer systems that exceed industry durability benchmarks while maintaining application efficiency, this pigment delivers uncompromising performance across all technical parameters.
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| Company Name | Beijing TDD E-commerce Co., Ltd | Country/Region | China |
| Business Type | Online Store | Company Size | 2000 |
| Established | December 18, 2014 | ||
| Address | Building No.3, Area 6, No.188, West of South Forth Ring Rd, Beijing, China | ||
| Main Products | PVC Resin , PP , PE , Pet , Titanium Dioxide , Pigment , Car Tire | ||
| International Commercial Terms(Incoterms): | FOB, CFR, CIF, FCA | ||
| Terms of Payment: | LC, T/T, D/P | ||
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| Number of Foreign Trading Staff: | 20~40 People | ||
| Main Markets: | Southeast Asia, Africa, Mid East | ||
| Nearest Port: | Tianjin,Qingdao,Shanghai | ||
| Import & Export Mode: | Have Own Export License | ||
About Beijing United Information Technology Co., Ltd.
Beijing United Information Technology Co., Ltd. (Stock Code: 603613. SH), founded in 2002 and listed on the Main Board in July 2019, is mainly engaged in industrial e-commerce and industrial Internet platforms. Based on industrial e-commerce and supported by industrial big data and industrial digitalization, the company provides online commodity trading, business information services and digital technology services of industrial products and raw materials for related industries. In terms of business model, it is called "the industrial version of Pinduoduo" and "the industrial version of JD.com".
About Beijing TDD E-commerce Co., Ltd.
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Beijing TDD E-commerce Co., Ltd. (shortly named TDD Global) is the core subsidiary of Guolian Corporation (Stock Code: 603613.SH) and the first industrial Internetplatform of Duoduo Series Platforms. The company mainly engages in B28 e-commerce transaction serices of raw material and industrial products, digital supply chain serices, industrial digitalization serices and industrial big data serices, and is committed to promoting the deep integration of traditional industries and new technologies such as the Internet, Internet of Things, big data, intelligent manufacturing and block chain, etc.
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of quot&quality first, customer first and credit-based"Since the establishment of the company and always do our best to satisfy potential needs of our customers.
Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with an irresistible force. |
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Our Advantages:
Rich Experience-over 20 years in industry field
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Our services:
In order to better satisfy our customers worldwide and maintain regular customers. Our company takes raw material&industrial product B2B e-commerce transaction service, digital supply chain service, industry digitization service and industry data service as it′s primary business, focusing on promoting the deep integration between new technology and traditional industry, such as Internet, Internet of things, big data, intelligent manufacturing and blockchain.
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