Calcium-Free PVC Sheet is a type of polyvinyl chloride (PVC) panel manufactured without calcium carbonate (CaCO₃) fillers. Calcium Free PVC Rigid Sheet is renowned for its exceptional chemical corrosion resistance, high purity, superior toughness, and excellent weldability. Primarily used in high-end industrial applications demanding extreme corrosion resistance and purity, calcium free PVC pressed sheet serves as an upgraded alternative to conventional PVC sheets, though at a higher cost.
Size:
Thickness:10mm-60mm
Width:1000mm-1800mm
Length:maximum length 3000mm
Colors:Grey,White
Technical Data Sheet
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Item |
Product Name |
PVC Laminated Sheet |
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No. |
Inspection Item |
Technical Requirement |
Test Result |
Judgment |
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1 |
Color Difference |
Pigments and colorants uniformly dispersed in raw materials. No color difference within the same batch; no significant color difference between different batches. |
Compliant |
Qualified |
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Surface |
Smooth and flat surface except for embossed patterns. |
Compliant |
Qualified |
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Free from visible defects, cracks, spots, voids, bubbles, impurities, color unevenness, or other defects unacceptable for intended use. |
Compliant |
Qualified |
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No noticeable unevenness on the surface, and no detectable tactile unevenness. |
Compliant |
Qualified |
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Edges |
Four edges straight; four corners right-angled. |
Compliant |
Qualified |
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2 |
Thickness, mm |
1≤d≤5mm ±15% 5<d≤20mm ±10% d>20mm ±7% |
Compliant |
Qualified |
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3 |
Density, g/cm³ |
≤1.40 |
1.385 |
Qualified |
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4 |
Mechanical Properties |
Tensile Strength, MPa |
≥50.0 |
54.3 |
Qualified |
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Tensile Modulus, MPa |
≥2500 |
2860 |
Qualified |
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Notched Impact Strength, kJ/m² |
≥2.0 |
5.5 |
Qualified |
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Nominal Strain at Break, % |
≥5.0 |
13.0 |
Qualified |
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5 |
Thermal Properties |
icat Softening Temperature, ℃ |
≥75.0 |
80.6 |
Qualified |
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Dimensional Change Rate upon Heating, % |
Transverse |
±3.0 |
-1.0 |
Qualified |
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Longitudinal |
±3.0 |
-2.0 |
Qualified |
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6 |
Laminating Quality |
Free from bubbles, cracks, or delamination |
Compliant |
Qualified |
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Characteristics
Exceptional Chemical Corrosion Resistance: This is its core advantage. Calcium powder readily reacts with chemicals such as acids and alkalis, while calcium-free PVC sheets eliminate this weakness. Consequently, they exhibit extremely strong and stable corrosion resistance against media including acids, alkalis, salts, gases, and water vapor. They are resistant to corrosion, swelling, and deformation.
High Purity and Cleanliness: With no calcium powder leaching out, it does not contaminate the media it contacts. This makes it highly suitable for applications requiring utmost purity, such as semiconductors, food processing, biopharmaceuticals, and ultrapure water systems.
Outstanding Mechanical Strength and Toughness: The addition of calcium carbonate reduces material toughness and impact strength, making sheets brittle. In contrast, calcium-free PVC sheets offer higher impact strength, tensile strength, and flexural strength, with excellent toughness that resists cracking.
Excellent Weldability: During hot-air welding, the weld seam demonstrates high strength and superior sealing performance. This is because the weld area does not form weak bonding zones due to the absence of calcium-based fillers.
Uniform Color and Smooth Surface: The homogeneous internal material ensures consistent color between machined cross-sections and the surface, resulting in enhanced texture and appearance.
Applications
High-End Chemical Industry: Used to manufacture chemical storage tanks, containers, linings, piping, and ventilation systems with extremely high requirements. Suitable for handling highly corrosive environments including strong acids, alkalis, and organic solvents.
Semiconductor and Electronics Industry: Applied in manufacturing sheet components, water tanks, and troughs for ultrapure water distribution systems. Ensures no water contamination from calcium leaching. Serves as structural materials for cleanrooms and utensils for wet process stations.
Environmental Protection and Water Treatment: Fabricates critical components in wastewater treatment equipment such as electrolytic cells and adsorption towers. Utilized in advanced water purification systems.
Food and Pharmaceutical Industry: Functions as workbench panels and baffles for food processing equipment. Employed in areas requiring high cleanliness standards (must comply with relevant sanitary regulations) for pharmaceutical production environments.
Electroplating Industry: Used to construct electroplating tanks, pickling tanks, etc., due to its resistance to corrosion from various electroplating chemicals.
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