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Ca-Zn composite heat stabilizer is a white or light yellow powder, is a high-performance Ca-Zn advanced composite stabilizer that complies with the lead-free and cadmium-free environmental directives, and integrates stabilizers and lubricants.
| Category | Parameter / Description |
|---|---|
| Physical Properties | |
| Appearance | White or light yellow powder |
| Form | Solid powder |
| Odor | Odorless or slight characteristic odor |
|
Water content (105ºC,2H) ≤
|
2% |
|
Bulk density (g/cm3)
|
1.1-1.5
|
|
Range of melting (ºC)
|
80-120
|
|
Recommended dosage (PHR)
|
3.5~4
|
| Density | 1.2-1.8 g/cm³ (varies by formulation) |
| Bulk Density | 0.4-0.8 g/cm³ |
| Chemical Properties | |
| Main Components | Calcium salts (e.g., calcium stearate), zinc salts (e.g., zinc stearate), organic co-stabilizers (e.g., polyols, antioxidants) |
| Decomposition Temp. | ≥ 200°C (excellent thermal stability, suitable for PVC processing) |
| pH (aqueous suspension) | 6.5-8.5 (neutral to slightly alkaline) |
| Moisture Content | ≤ 1.0% |
| Solubility | Insoluble in water, partially soluble in organic solvents (e.g., esters, ketones) |
| Migration | Low migration (minimal exudation to product surface) |
| Applications | |
| Compatible Materials | Flexible PVC, rigid PVC, PVC blends |
| Typical Uses | Pipes, profiles, cable sheathing, films/sheets, food packaging, medical devices, automotive interiors, children's toys |
| Processing Methods | Extrusion, injection molding, calendering, blow molding |
| Performance Advantages | |
| Thermal Stability | Long-term PVC degradation inhibition, minimizes discoloration during processing |
| Weather Resistance | UV-resistant, withstands humid and hot environments (ideal for outdoor construction) |
| Safety | Lead-free, cadmium-free, compliant with food-contact (e.g., FDA, EU 10/2011) and medical-grade requirements |
| Compatibility | Excellent synergy with plasticizers, lubricants, and fillers (e.g., calcium carbonate) |
| Storage & Handling | |
| Storage Conditions | Store in a cool, dry place (recommended humidity ≤60%) |
| Packaging | 25 kg/bag (moisture-proof inner liner + woven outer bag) |
| Safety Precautions | Use dust masks and gloves during handling |
Applications:
PVC Pipes/Fittings: Water supply pipes, drainage pipes, gas pipes (requires blending with other stabilizers).
Window/Door Profiles: Weather-resistant formulations for outdoor structural frames.
Decorative Materials: Wall panels, flooring, ceiling boards.
Usage: Add 1-3% to rigid PVC formulations with lubricants and fillers, processed via extrusion.
Applications:
Cable Sheathing: High-temperature and flame-retardant sheathing materials.
Insulation Layers: Electrically insulating formulations for low-voltage cables.
Usage: Blend with plasticizers (e.g., DOP) and flame retardants (e.g., aluminum hydroxide), using injection molding or extrusion.
Applications:
Food Packaging Films: Transparent, non-toxic films (FDA-compliant).
Pharmaceutical Blister Packs: Medical-grade stabilizers for safety-critical packaging.
Usage: Add 0.5-2% to flexible PVC, processed via blow molding or calendering.
Applications:
Interior Components: Dashboards, door liners (low odor, aging resistance).
Sealing Strips: Oil-resistant, low-temperature elastomers.
Usage: Combine with elastomer plasticizers (e.g., ESBO), processed via injection molding or hot pressing.
Applications:
Medical Devices: IV bags, disposable gloves (high biocompatibility requirements).
Children's Toys: Lead-free, low-migration formulations.
Usage: High-purity calcium-zinc complexes blended with non-toxic plasticizers (e.g., citrate esters).
Agricultural Films: UV-resistant greenhouse covers.
Electronics: Connectors, appliance casings (flame retardancy + stability).
Recycled Materials: Stabilization of recycled PVC products.
Formulation Design:
Rigid PVC: 1-3% dosage with lubricants (e.g., wax, calcium stearate) and impact modifiers (e.g., CPE).
Flexible PVC: 0.5-2% dosage with plasticizers (e.g., DINP) and antioxidants (e.g., BHT).
Processing Techniques:
Extrusion: High-temperature (160-200°C) continuous production for pipes/profiles.
Injection Molding: Rapid shaping for complex parts (e.g., automotive components).
Calendering/Blow Molding: Low-temperature (140-180°C) processing for films/sheets.
Environmental Regulations:
Lead-Free Substitution: Global bans on lead-based stabilizers (e.g., EU RoHS) drive adoption in cables and construction.
Bio-Based Additives: Integration with renewable materials (e.g., plant oil derivatives) to reduce carbon footprint.
High-Performance Demands:
Enhanced Heat Resistance: Stabilizers with decomposition temperatures >220°C for high-speed extrusion.
Multifunctional Formulations: Integrated stabilization, lubrication, and flame retardancy (e.g., nano calcium-zinc composites).
Smart & Custom Solutions:
AI-Driven Formulations: Optimizing calcium/zinc ratios and additive synergy via machine learning.
Sector-Specific Designs: Tailored stabilizers for automotive, medical, and other high-end applications (e.g., ultra-low migration medical grades).
Circular Economy Integration:
Recycled PVC Compatibility: Improved stabilization efficiency for recycled materials, enabling closed-loop production.
Global Market Expansion:
Emerging Markets: Growing demand in rapidly industrializing regions (e.g., India, Southeast Asia).
Calcium Zinc Stabilizers, with their eco-friendliness, safety, and versatility, are pivotal in PVC processing. Future advancements in high performance, smart customization, and circular economy integration will solidify their dominance in the global green polymer market.
1.Q:How's the quality?
A:We are the source factory, quality is guaranteed.
2.Q:When does it ship?
A:We have standardized processes to ship as fast as possible.
3.Q:How do you protect the after-sales?
A:We keep samples of each batch and support returns and technical traceability in case of quality problems.
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