PVC (Polivinil klorid) Objašnjeno: Struktura, Svojstva, Proizvodnja & Globalne aplikacije (2026 Vodič)

1. Što je PVC? Understanding the Molecular Structure

PVC (Polivinil klorid) is a thermoplastic polymer produced by polymerizing vinyl chloride monomer (VCM).

• Chemical structure: –CH₂–CHCl–
• Chlorine content: ~56.8%
• Type: Polar polymer

Ključni tehnički uvid:

Prisutnost atoma klora daje PVC:

• Izvrsno flame retardancy
• Strong kemijska otpornost
• visoko mechanical rigidity

Međutim, pure PVC is brittle → requires additives (plasticizers, stabilizers).

2. PVC Manufacturing Process (Industrial Perspective)

There are three main production methods:

Typical Process Flow (Suspension PVC):

1. VCM compression
2. Polymerization (40–70°C)
3. Degassing (remove residual VCM)
4. Drying
5. Final resin output

Industry Trends:

• Ultra-low residual VCM (<1 ppm)
• Mercury-free catalysts
• Continuous production systems

3. Key Properties of PVC (Engineering Data)

👉 Zaključak:
PVC offers an optimal balance of strength + trošak + sigurnost

4. Rigid PVC vs Flexible PVC

👉 Core Difference: Plasticizer content determines flexibility.

5. Major Applications of PVC Worldwide

1. Construction (60%+ demand)

• Water supply pipes
• Drainage systems
• Window profiles

2. Electrical Industry

• Cable insulation
• Conduits

3. Medical Sector

• Blood bags
• Tubing

4. Renewable Energy (Hot Trend)

• Solar cable insulation
• Energy storage wiring

👉 PVC is becoming critical in solar + energy storage systems

6. PVC vs PE vs PP (Material Comparison)

👉 PVC stands out in fire safety + structural strength

7. Environmental Challenges & Solutions

Challenges:

• Plasticizer restrictions (phthalates)
• Chlorine-related concerns

Solutions:

• Bio-based plasticizers
• Lead-free stabilizers
• Recycling technologies

👉 EU regulations (REACH) are shaping the future of PVC

8. Why PVC Still Dominates the Market

• Isplativo (20–30% cheaper than alternatives)
• Highly customizable
• Wide industrial applications

👉 PVC is not just plastic — it’s an engineering platform material

Luoyang Datang Energy Tech Co.Ltd je vodeći kineski proizvođač specijaliziran za visokokvalitetne plastične cijevi i priključke. Opremljen najsuvremenijim automatiziranim proizvodnim linijama i uz podršku tima 200 profesionalci, nudimo opsežnu liniju proizvoda koja se sastoji od preko 150 vrste plastičnih cijevi i spojnih dijelova za sustave vodoopskrbe i odvodnje, prijenos plina, i sustave podnog grijanja. Naši glavni proizvodi uključuju PVC cijevi i fitinge, PE (HDPE) Cijevi i spojni elementi, PPR cijevi i priključci, i PEX cijevi za podno grijanje.