| Customization: | Available |
|---|---|
| CAS No.: | 136-56-6 |
| Formula: | C16h30cao4 |
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Stabilizers are chemical mixtures that are essential for the processing of PVCs and play a critical role in the development of the finished product to ensure the desired quality and durability.
Calcium Zinc Stabilizers are environmentally friendly polymer heat stabilizers primarily used in the processing and production of polyvinyl chloride (PVC) products. Their core features include non-toxicity, high-temperature resistance, and excellent weather resistance. Leveraging the synergistic effect of calcium and zinc compounds, they effectively inhibit thermal degradation of PVC during high-temperature processing, preventing discoloration, decomposition, and deterioration of mechanical properties.
These stabilizers offer superior long-term thermal stability and are suitable for both flexible and rigid PVC applications, such as pipes, profiles, cable sheathing, films, and food packaging. Their low migration and anti-exudation properties ensure smooth surfaces and prolong product service life. With UV resistance and anti-yellowing capabilities, they perform exceptionally in outdoor construction materials, automotive components, and other demanding environments. Compliant with global environmental regulations, Calcium Zinc Stabilizers serve as a safer alternative to traditional lead-based stabilizers, ideal for food-contact-grade materials, medical devices, and other high-safety applications. Combining cost-effectiveness and processing adaptability, they represent an optimal choice for modern green manufacturing.
| Category | Parameter / Description |
|---|---|
| Physical Properties | |
| Appearance | White or light yellow powder/granules/fluid |
| Form | Solid powder or granular or liquid (state) |
| Odor | Odorless or slight characteristic odor |
| 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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