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Extrusion Grade PVC Resin K65-68 for Pipe Manufacturing and Window Frames
| Могил: | 10 тонн |
| Цена: | Please contact customer service |
| Стандартная упаковка: | Мешки и тонные мешки |
| Период доставки: | Около шести недель |
| Способ оплаты: | LC,D/A,D/P,T/T,Western Union,MoneyGram |
| Пропускная способность: | 100 000 тонн в год |
Детальная информация
Место происхождения
Китай
Фирменное наименование
SiChun HongJian
Номер модели
Поливинилхлорид
Документ
Химическая формула:
(C2H3Cl) n
Номер имени пользователя CAS:
9002-86-2
появление:
Белые зерна
Выделить:
Extrusion Grade PVC Resin
,K65-68 Polyvinyl Chloride
,Pipe Manufacturing SG-5 PVC
Описание продукта
Product Overview
High Quality PVC Resin (Polyvinyl Chloride) is a premium, suspension-grade homopolymer resin specifically engineered for extrusion and injection molding applications requiring exceptional flow characteristics, thermal stability, and mechanical strength. With a K-value range of 65-68 (SG-5 classification), this resin represents the industry standard for manufacturing rigid PVC products including pipes, profiles, window frames, and fittings.
Produced through advanced suspension polymerization technology under strict quality control protocols, this white, free-flowing powder delivers consistent particle size distribution, uniform porosity, and excellent plasticizer absorption—ensuring reliable processing performance and superior end-product quality.
Key Features & Benefits
- Optimal K-Value (65-68): Ideal molecular weight range for rigid extrusion applications, balancing melt flow characteristics with mechanical properties
- Excellent Thermal Stability: Minimal impurity content reduces risk of degradation, discoloration, and black spec formation during prolonged extrusion runs
- Uniform Particle Size Distribution: Advanced polymerization ensures consistent particle size for rapid plasticizer absorption and stable melt flow
- Superior Porosity & Plasticizer Absorption: Controlled porosity enables efficient absorption of stabilizers, lubricants, and processing aids
- Excellent Surface Finish: Products exhibit smooth, glossy surfaces free from fisheyes or gel particles
Technical Specifications
| Parameter | Specification | Typical Value |
|---|---|---|
| Product Type | PVC Suspension Resin | -- |
| Grade Designation | SG-5 | -- |
| K-Value | 65-68 | 66-67 |
| Polymerization Degree | 1000-1100 | 1050-1080 |
| Volatile Matter | ≤ 0.30% | ≤ 0.20% |
| Apparent Density | 0.48-0.58 g/mL | 0.52-0.55 g/mL |
| Particle Size (0.25mm Sieve) | ≥ 98% through | ≥ 99% |
| Residual Vinyl Chloride (VCM) | ≤ 1 ppm | ≤ 0.5 ppm |
| Fish Eye Count | ≤ 20 pcs/400 cm² | ≤ 15 pcs/400 cm² |
| Plasticizer Absorption (100g) | ≥ 20 g | 22-26 g |
| Whiteness (160 °C, 10 min) | ≥ 78% | ≥ 82% |
| Appearance | White, free-flowing powder | Conforms |
Applications
PVC Pipes & Fittings
SG-5 PVC resin is the global standard for rigid pipe applications across multiple sectors including water supply, drainage, sewer, conduit, and irrigation systems, as well as injection-molded fittings.
PVC Window Profiles & Door Frames
uPVC window and door profiles require high impact strength, excellent weatherability, dimensional stability, smooth surface finish, and weldability for corner joining in frame fabrication.
PVC Profiles & Trim
Ideal for wall paneling, siding, ceiling tiles, decorative moldings, furniture profiles, automotive interior trim, and refrigerator gasket profiles.
General Rigid Extrusion Applications
Suitable for construction applications including cladding, gutter systems, and fencing, as well as industrial components and electrical applications.
Processing Guidelines
Dry Blend Preparation
| Component | Parts per Hundred Resin (phr) | Function |
|---|---|---|
| PVC Resin (SG-5) | 100 | Base polymer |
| Heat Stabilizer | 2.0-3.5 | Thermal stability |
| Impact Modifier | 3.0-8.0 | Impact resistance |
| Processing Aid | 0.5-1.5 | Melt strength, surface finish |
| Lubricant (Internal) | 0.5-1.0 | Flow improvement |
| Lubricant (External) | 0.3-0.8 | Metal release, reduced friction |
| Filler (CaCO₃) | 5.0-15.0 | Cost reduction, stiffness |
| Titanium Dioxide | 3.0-6.0 | Whiteness, UV protection |
| Pigments | As required | Color |
Extrusion Parameters
| Parameter | Typical Range |
|---|---|
| Barrel Temperatures | 160-190°C (320-374°F) |
| Die Temperature | 180-200°C (356-392°F) |
| Melt Temperature | 185-205°C (365-401°F) |
| Screw Speed | 15-40 RPM |
| Cooling | Vacuum calibration followed by water spray/immersion |
Safety & Handling
Storage Requirements
- Store in cool, dry, well-ventilated area on pallets
- Protect from direct sunlight, moisture, and heat sources
- Avoid prolonged storage at temperatures above 35°C (95°F)
Handling Precautions
- Use dust control measures and local exhaust ventilation
- Avoid creating dust clouds; use grounded equipment
- PVC dust may present combustible dust hazard
Thermal Decomposition Warning
PVC begins to decompose at temperatures above 200°C (392°F), releasing corrosive hydrogen chloride (HCl) gas. Ensure adequate ventilation during processing.
Packaging & Logistics
| Packaging Type | Capacity | Features |
|---|---|---|
| Kraft Paper Bag | 25 kg | Multi-layer with PE liner, palletized |
| Woven Polypropylene Bag | 25 kg | Reinforced, with moisture barrier |
| Jumbo Bag | 500 kg / 1000 kg | FIBC with discharge spout |
| Bulk Tanker | 20-25 metric tons | Pneumatic delivery for large-scale processors |
| Custom Packaging | As required | Tailored to customer specifications |
Storage Life: 12 months when stored under recommended conditions in original unopened packaging.
Quality Assurance & Compliance
Each batch undergoes comprehensive testing including K-Value determination, particle size analysis, volatile matter, residual VCM, fish eye count, apparent density, and plasticizer absorption.
Standards Compliance
- ISO 9001:2015 Quality Management
- REACH Regulation (EC) No 1907/2006
- RoHS Directive (2011/65/EU)
- Suitable for potable water contact applications (NSF/ANSI 61, WRAS, DVGW)
Environmental & Sustainability Considerations
- Recyclability: PVC is fully recyclable with 10-30% regrind content common in extrusion applications
- Energy Efficiency: Lower energy input compared to alternative materials
- Long Service Life: Service lives exceeding 50-100 years reduce replacement frequency
- VinylPlus® Commitment: Available from manufacturers participating in sustainability programs
Conclusion
High Quality PVC Resin (SG-5 / K65-68) represents the industry benchmark for rigid PVC extrusion applications. Its optimal molecular weight, consistent particle characteristics, and excellent processability make it the preferred choice for manufacturers of pipes, profiles, window frames, and fittings worldwide.
With its proven track record in demanding construction and infrastructure applications, combined with comprehensive quality assurance and flexible packaging options, this SG-5 PVC resin is the foundation for producing high-quality, durable, and cost-effective rigid PVC products.
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