| Customization: | Available |
|---|---|
| Carrier: | PVC |
| Color: | Red |
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Polyvinyl chloride (PVC) is the world's third most widely used plastic and is an attractive alternative to traditional materials such as glass, metal, wood, and other plastic materials because of its versatility, durability, and cost competitiveness. PVC can be tailored by adding modifiers (e.g., plasticizers, stabilizers) to achieve specific properties, categorized into rigid PVC (uPVC) and flexible PVC, making it suitable for diverse industrial and consumer applications.
Below is a detailed comparison of PVC Granules and PVC Resin, covering their forms, compositions, applications, and processing methods.
| Category | PVC Resin | PVC Granules |
|---|---|---|
| Physical Form | Fine white powder | Uniform granules (typically 2-5mm in diameter) |
| Composition | Pure polyvinyl chloride polymer (no additives) | PVC resin + additives (plasticizers, stabilizers, fillers, etc.) |
| Production Stage | Raw material (polymerized from VCM) | Processed product (compounded and pelletized) |
2. Key Differences
(1) Processing
PVC Resin:
Requires downstream manufacturers to add plasticizers, stabilizers, and colorants before extrusion/molding.
Used for highly customized formulations (e.g., medical tubing, specialty cables).
PVC Granules:
Pre-compounded with additives, ready for direct injection molding or extrusion.
Ideal for standardized products (e.g., pipes, window profiles).
(2) Properties
PVC Resin:
Neutral properties; final performance depends on added modifiers.
Example: Adding 40% DOP creates flexible films, while calcium carbonate increases rigidity.
PVC Granules:
Pre-optimized for specific uses:
Rigid Granules (UPVC): High calcium filler → pipes, fittings.
Flexible Granules: 30% DOP + plasticizers → floor mats, hoses.
| Application | PVC Resin Use Case | PVC Granules Use Case |
|---|---|---|
| Pipes & Construction | Customized weather-resistant pipes | Standard plumbing pipes, window frames |
| Wire & Cable | High-flame-retardant jackets (custom) | General-purpose insulation |
| Consumer Goods | FDA-compliant food packaging films | Shoes, packaging films (ready-to-use) |
3. Selection Guidelines
Choose PVC Resin If:
You need custom formulations (e.g., medical, food-grade, or high-performance products).
You have in-house compounding facilities and cost-saving goals.
Your production scale justifies raw material processing.
Choose PVC Granules If:
You are an SME without mixing/pelletizing equipment.
You produce standardized items (e.g., generic PVC fittings).
You prioritize fast production (skip compounding steps).
| PVC Granule Type | Typical Formula | Applications |
|---|---|---|
| Rigid (UPVC) | PVC resin + Ca/Zn stabilizer + CaCO3 | Drain pipes, building profiles |
| Flexible | PVC resin + 30% DOP + ESBO plasticizer | Flooring, inflatable products |
| Transparent | PVC resin + organotin + MBS impact modifier | Blister packs, shrink films |
| Flame-Retardant | PVC resin + Sb2O3 + phosphate FR | Cable sheaths, enclosures |
5. Cost & Sustainability
Cost Comparison:
PVC resin: Lower material cost but higher processing expenses.
PVC granules: Higher price but reduced processing time/energy.
Eco-Trends:
Shift toward lead-free stabilizers (e.g., Ca/Zn) and bio-plasticizers.
Recycled PVC granules gaining traction in non-critical uses (e.g., planters, pallets).
PVC (Polyvinyl Chloride) granules are pre-compounded plastic pellets containing PVC resin and additives (e.g., plasticizers, stabilizers, fillers). They are widely used across industries due to their ease of processing, consistency, and versatility. Below are the major applications of PVC granules:
1. Construction & Building Materials
(a) Pipes & Fittings
UPVC (Unplasticized PVC) Granules: Used for water supply pipes, drainage systems, and sewage pipes due to their chemical resistance, durability, and low cost.
CPVC (Chlorinated PVC) Granules: For hot water pipes (higher temperature resistance).
(b) Window & Door Profiles
Rigid PVC granules are extruded into energy-efficient window frames, shutters, and door panels (weatherproof, UV-resistant).
(c) Flooring & Wall Cladding
Flexible PVC granules with plasticizers (e.g., DOP, DINP) are used in vinyl flooring, wall panels, and decorative sheets.
2. Electrical & Cable Industry
(a) Wire & Cable Insulation
Flame-retardant PVC granules (with additives like antimony trioxide) are used in power cables, telecom cables, and automotive wiring.
LSZH (Low Smoke Zero Halogen) PVC granules for fire-safe applications (e.g., subways, tunnels).
(b) Electrical Conduits & Junction Boxes
Rigid PVC granules provide impact resistance and insulation for electrical housings.
3. Automotive Components
(a) Interior Trim & Dashboard Parts
PVC granules (semi-rigid) are used in car door panels, dashboards, and seat coverings.
(b) Underbody Coatings & Seals
Flexible PVC granules (with plasticizers) for hoses, gaskets, and anti-corrosion coatings.
4. Consumer Goods & Packaging
(a) Blister Packs & Transparent Films
Clear PVC granules (with MBS impact modifiers) for pharmaceutical packaging, food containers, and shrink wraps.
(b) Footwear & Apparel
Soft PVC granules (30-50% plasticizer content) for shoe soles, rain boots, and synthetic leather.
(c) Toys & Stationery
Non-toxic PVC granules (phthalate-free) for children's toys, erasers, and pencil grips.
5. Medical & Healthcare
(a) IV Bags & Tubing
Medical-grade PVC granules (DEHP-free plasticizers) for blood bags, catheters, and fluid delivery systems.
(b) Disposable Gloves & Aprons
Flexible PVC granules for single-use medical protective gear.
6. Industrial & Specialty Applications
(a) Chemical Storage Tanks & Linings
Corrosion-resistant PVC granules for acid storage tanks, chemical pipes, and industrial liners.
(b) 3D Printing Filaments
Modified PVC granules (with thermal stabilizers) for durable 3D-printed parts.
(c) Artificial Leather (Synthetic PU Leather)
PVC granules + fabric backing for car seats, furniture upholstery, and fashion accessories.
| Type of PVC Granules | Key Properties | Common Applications |
|---|---|---|
| Rigid (UPVC) Granules | High strength, chemical resistance | Pipes, window frames, electrical conduits |
| Flexible (Soft PVC) Granules | Elastic, soft, durable | Flooring, hoses, footwear, medical tubing |
| Flame-Retardant Granules | Self-extinguishing, low smoke | Cables, automotive wiring, building materials |
| Transparent Granules | Clear, impact-resistant | Blister packs, food packaging, medical devices |
| Recycled PVC Granules | Eco-friendly, cost-effective | Non-critical products (e.g., garden hoses, traffic cones) |
Physical Properties
| Parameter | Rigid PVC (uPVC) | Flexible PVC | Test Standard |
|---|---|---|---|
| Density | 1.3-1.45 g/cm³ | 1.1-1.35 g/cm³ | ISO 1183 |
| Tensile Strength | 40-60 MPa | 10-25 MPa | ASTM D638 |
| Elongation at Break | 2-40% | 100-400% | ASTM D638 |
| Flexural Modulus | 2,500-4,000 MPa | 10-100 MPa | ASTM D790 |
| Shore Hardness | D75-D85 (Shore D) | A50-A95 (Shore A) | ASTM D2240 |
| Notched Izod Impact | 2-10 kJ/m² | N/A | ASTM D256 |
| Parameter | Rigid PVC | Flexible PVC | Test Standard |
|---|---|---|---|
| HDT (1.8 MPa) | 65-80°C | 50-60°C | ASTM D648 |
| Continuous Use Temp | -10°C to +60°C | -30°C to +70°C (short-term up to 90°C) | ISO 2578 |
| Vicat Softening Point | 70-90°C | 60-80°C | ISO 306 |
| CLTE | 5-8 ×10-5/K | 7-15 ×10-5 /K | ASTM D696 |
| Parameter | SG3 | SG5 | SG7 | SG8 | Test Standard |
|---|---|---|---|---|---|
| Polymerization Degree (DP) | 1300-1500 | 1000-1100 | 700-800 | 500-600 | GB/T 3402 |
| K-value | 72-75 | 68-71 | 62-65 | 58-61 | ISO 1628-2 |
| Avg. Molecular Weight (×104) | 9.5-11.0 | 7.5-8.5 | 5.5-6.5 | 4.0-5.0 | GPC Method |
| Apparent Density (g/cm³) | 0.42-0.48 | 0.45-0.52 | 0.48-0.55 | 0.50-0.58 | GB/T 3402 |
| Oil Absorption (DOP, %) | 12-18 | 18-25 | 25-32 | 30-38 | GB/T 3400 |
| Thermal Stability (min) | ≥40 (180°C) | ≥30 (180°C) | ≥20 (180°C) | ≥15 (180°C) | GB/T 2917 |
Weifang Phoenix New Material Co., Ltd
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