Product Overview
Polypropylene (PP) sheet, also known as PP plastic board or extruded PP panel, is a high-performance thermoplastic material made by extruding PP resin with various functional additives. The extrusion process includes melt-compounding, calendaring, cooling, and cutting. As a semi-crystalline polymer, PP offers greater rigidity and a higher melting point than polyethylene (PE), making it suitable for a wide range of industrial applications.
Homopolymer PP tends to become brittle at temperatures above 0°C, so most commercial PP sheets are copolymers. These are either random copolymers (with 1–4% ethylene) or block copolymers with a higher ethylene content, which offer improved impact resistance at the cost of lower thermal distortion temperature (~100°C), reduced transparency, gloss, and stiffness.
Technical Properties of PP Sheet
- Hardness & Melting Point: Higher than PE, making PP more heat-resistant.
- Vicat Softening Temperature: Approx. 150°C.
- Impact Strength: Increases with ethylene content in copolymers.
- Crystallinity: High crystallinity provides excellent surface stiffness and scratch resistance.
- Environmental Stress Cracking: PP exhibits excellent resistance; no known issues.
- Melt Flow Rate (MFR): Ranges from 1 to 40. Lower MFR means better impact resistance but lower tensile strength.
- Shrinkage Rate: Typically 1.8–2.5%. Addition of 30% glass fiber reduces shrinkage to ~0.7%.
- Chemical Resistance: Excellent resistance to moisture, acids, and alkalis; poor resistance to aromatic hydrocarbons (e.g., benzene) and chlorinated solvents (e.g., carbon tetrachloride).
- Oxidation Resistance: Inferior to PE under high temperatures.
Common Types of PP Sheets
We offer various types of PP sheets to suit different application needs:
1. Virgin PP Sheet (Pure Polypropylene Sheet)
- Properties: Lightweight, weldable, easy to process, excellent chemical and heat resistance, high impact strength, non-toxic, and odorless. Meets environmental and food-grade safety standards.
- Colors: White, light gray (standard), customizable colors upon request.
- Applications: Widely used in chemical tanks, acid/alkali-resistant equipment, exhaust and wastewater treatment systems, fume scrubbers, clean rooms, semiconductor manufacturing, and thick-sheet stamping pads.
- Recommended Sizes: 1300×2000mm, 1000×2000mm
- Thickness Range: 1–60mm
- Max Width:
- 1–15mm: up to 1500mm
- 15–30mm: up to 1300mm
- 30–60mm: up to 1100mm
2. Modified PP Sheet (Calcium-Filled Polypropylene)
- Properties: Improved dimensional stability, rigidity, and thermal resistance. More cost-effective than pure PP.
- Colors: Green, white, beige.
- Applications: Ideal for manufacturing water tanks, three-phase separators, and non-critical structural components.
- Recommended Sizes: 1000×2000mm
- Thickness Range: 2–30mm
3. Glass Fiber Reinforced PP Sheet (FRPP Sheet)
Water and wastewater treatment plants
Reinforcement: Contains approx. 20% glass fiber.
Performance Enhancements:
Twice the strength and stiffness of regular PP.
Enhanced heat resistance and low-temperature impact strength.
Superior dimensional stability with a low shrinkage rate.
Excellent resistance to corrosion, electrical arc, and mechanical stress.
Applications: Designed for harsh industrial environments, including:
Petrochemical and chemical fiber industries
Chlor-alkali production
Dyes, pesticides, and pharmaceutical manufacturing
Food processing, light industry, metallurgy
