| Customization: | Available |
|---|---|
| CAS No.: | Xxxxx |
| Formula: | Xxxxx |
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Lead salt stabilizer a solid and liquid composite stabilizer with a synergistic mixture of components.
Lead salt stabilizer has strong thermal stability, good dielectric property, and low price. Reasonable ratio with lubricant can make PVC resin processing temperature range wider, and the quality of processed and post-processed products stable, is the most commonly used stabilizer at present.Lead salt stabilizer is mainly used in hard products. Lead salt stabilizer has the characteristics of good heat stabilizer, excellent electrical performance and low price.
| Category | Description |
|---|---|
| Common Types | Tribasic lead sulfate, Dibasic lead phosphite, Lead stearate, Basic lead carbonate, Dibasic lead phthalate, etc. |
| Chemical Formula | - Tribasic lead sulfate: 3PbO·PbSO4·H2O - Dibasic lead phosphite: 2PbO·PbHPO3·½H2O - Lead stearate: Pb(C17H35COO)2 |
| Chemical Properties | - High thermal stability: Effectively absorbs HCl generated during PVC degradation, inhibiting chain decomposition - Weather resistance: Resists UV radiation and oxidative degradation - Acid-neutralizing capacity: Neutralizes acidic byproducts during PVC processing - PVC compatibility: Uniformly disperses in PVC matrix for long-term stability |
| Physical Form | - White or light yellow powder/granules - Density: 4.5-6.5 g/cm³ (varies by type) - Decomposition temperature: 100-250ºC (decomposes without melting) |
| Physical Properties | - Lubricity: Improves PVC processing fluidity and reduces friction - Electrical insulation: Suitable for wire/cable insulation - Low volatility: Stable at high temperatures - Toxicity: Contains lead; requires cautious handling (environmental restrictions) |
| Primary Applications | - Rigid PVC pipes (e.g., water pipes, drainage pipes) - Cable sheathing/insulation - Construction profiles (window/door frames, partitions) - Flexible PVC products (flooring, artificial leather) - Industrial sheets/films |
Functional Extensions:
Synergistic effects: Often compounded with metal soaps (e.g., calcium stearate) or lubricants to enhance thermal stability and processing efficiency.
Cost advantage: More economical than organotin or calcium-zinc stabilizers, suitable for non-eco-critical applications.
Environmental Substitution Trends:
Limitations: Lead compounds pose ecological toxicity, restricted by regulations like EU RoHS.
Alternatives: Calcium-zinc stabilizers, organotin, and rare-earth stabilizers gradually replace lead-based systems.
Processing Adaptability:
High-temperature suitability: Compatible with extrusion, injection molding (160-220ºC).
Opacity: Limited to opaque products due to lead compound coloration.
Special Applications:
Flame retardancy: Some lead salts (e.g., tribasic lead sulfate) act as flame-retardant synergists.
Chemical corrosion resistance: Used in PVC components for chemical pipelines or corrosive environments.
| Industry | Applications/Products | Key Functions |
|---|---|---|
| Construction | PVC water/drainage pipes, window/door profiles, roofing membranes | Provides high thermal stability to prevent PVC degradation during processing; enhances weather resistance for outdoor durability; improves material rigidity. |
| Electronics & Electrical | Cable insulation, sheathing, socket casings | Enhances electrical insulation; prevents conductivity loss due to PVC decomposition; improves flame retardancy (synergy with certain lead salts). |
| Automotive | Wire harness sheathing, sealing strips, interior parts | Boosts heat resistance (for engine compartment environments); optimizes processing fluidity to reduce surface defects; improves chemical corrosion resistance. |
| Packaging | Rigid PVC containers, industrial films | Prevents yellowing during processing; maintains transparency (low-lead formulations); extends storage stability. |
| Industrial Goods | Chemical pipelines, anti-corrosion sheets, industrial hoses | Resists acid/alkali corrosion; inhibits UV aging; maintains mechanical strength in harsh environments. |
Short-Term Retention:
Cost-Effectiveness: Dominates cost-sensitive sectors (e.g., construction pipes, industrial sheets) with lower environmental requirements.
Performance Demands: Hard to replace in high-temperature or highly corrosive scenarios due to lead salts' superior performance.
Technical Improvements:
Low-Lead/Lead-Free Formulations: Develop hybrid systems (e.g., lead-calcium-zinc synergies) to reduce lead content while retaining performance.
Closed-Loop Recycling: Design dedicated recycling processes for lead-containing PVC products to minimize environmental leakage.
Emerging Market Positioning:
Demand in Developing Countries: Retains market share in regions with lax environmental regulations due to cost advantages.
Legacy Product Maintenance: Supports repair and replacement of existing lead-containing PVC infrastructure.
Application of Lead Salt Stabilizers in PVC Building Materials
Lead salt stabilizers are primarily used in PVC building materials such as rigid pipes (drainage/water supply pipes), window/door profiles, waterproof membranes, and construction partition boards. Their key functions include:
Thermal Stability: Absorbing HCl generated during high-temperature PVC processing (160-220°C) to prevent material yellowing and structural degradation, ensuring stable extrusion molding.
Weather Resistance: Enhancing UV and oxidation resistance to extend outdoor service life (e.g., waterproof roofing membranes lasting over 10 years).
Cost Advantage: Lead salt systems are 30%-50% cheaper than eco-friendly stabilizers, making them suitable for cost-sensitive infrastructure projects.
Mechanical Reinforcement: Improving PVC rigidity, increasing compressive strength by 15%-20% for load-bearing structures.
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.
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