Rigid PVC is a low-maintenance, strong, and lightweight plastic often used in many markets, including construction. It comes in a range of colors and finishes, and often used for window frames and sills when installing insulated glazing in new buildings; or to replace older single-glazed windows, as it is extremely weather-resistant. It has almost entirely supplanted the use of cast iron for plumbing and drainage.
Rigid PVC is widely used in construction for water and waste pipes, conservatories, gutters, cladding, wall and door protection and window frames due to its excellent thermal properties and stability. In transport applications uPVC is used externally for vehicle bodies, caravans and boating, and internally for creating pleasing aesthetics, since it is available in many colours and surface finishes. In the retail sector point of sale displays, storage racks, ticket strips and poster grippers are all produced from extruded rigid PVC.
Rigid PVC, is a material that provides a good balance of stiffness, impact resistance, UV stability, and inherent UL flame performance. It’s most commonly used in construction for pipe and in profile applications such as doors and windows and refrigeration. Rigid PVC is also often used as a replacement for metal and wood in numerous applications and works great with embossing and textures for highly visible parts. PVC is also popular as flexible PVC where the addition of a plasticizer makes it much more flexible.
PVC is a hard polymer that can be further enhanced using impact modifiers. Rigid PVC extrusions have strong chemical resilience. This means rigid PVC tubing can be easily welded, glued and fused to itself – ideal for joints in pipes. Its resistance to corrosion makes extruded rigid PVC profiles, sections and trims suitable for outdoor environments. PVC also has good insulation properties for low voltage electrical uses. Thanks to its multiple benefits, rigid PVC extrusions and rigid PVC tubing has been used with success in both indoor and outdoor locations.
Rigid PVC Pros
• Cost effective
• Easy to process
• Easy to bond
• UL, NSF, and UV stable grades
• Flame resistant
• Good chemical resistance
• Rigid PVC Cons
• Poor cold temperature impact
• Softens quickly at elevated temperature and then shrinks once cooled
• Poor creep resistance
• Limited to light colors due to heat absorption in dark colors exceeding the Heat Deflection temperature
Polyvinyl chloride is produced by the polymerization of the vinyl chloride monomer. Rigid PVC (sometimes seen as uPVC) has high hardness and great mechanical properties. As a thermoplastic, it has a natural insulation that helps reduce condensation and resists internal temperature changes. Rigid PVC is chemically resistant to acids, salts, bases, fats, alcohols, and many solvents. It is also recognized as having great resistance against sunlight, chemicals, and oxidation from H20.
Window and door frames
What’s the difference between a flexible and rigid PVC compound, though? Besides the fact that one can be described as “soft” and the other as “hard” – respectively – there are quite a few distinguishing factors that set them apart.
1. The Amount of Plasticiser Contained in Different PVC Compounds
The most notable difference is this: flexible PVC compounds have plasticiser added to them, while rigid ones have little to none. This plasticizer makes the PVC resin more flexible, which means it’s soft and supple in comparison. You’ll see these “rubbery” characteristics in the likes of garden hosepipes. Rigid PVC compounds retain their hardness because they include minimal amounts of plasticizer.
2. The Physical Qualities of the Compounds
Depending on how much plasticizer is added to a PVC compound, its physical qualities will vary. Generally speaking, rigid PVC compounds are usually denser and harder, which makes them strong and durable. Flexible ones, on the other hand, are more diverse in their uses. Each type comes with its own pros and cons. Rigid PVC could be stronger and more durable, while flexible PVC can be made to be resistant to chemical and liquid damage.
3. The Uses of Flexible vs Rigid PVC Compounds
The application of the PVC compound will suggest the specific qualities and benefits that it is required to have. This can be tailored and adhered to during the manufacturing process of the PVC compounds. Rigid compounds are better suited for exterior protective uses, such as wall claddings, fascia boards and water drainage pipes. Flexible compounds can provide different uses, such as the material used to make medical blood bags, gumboots or even coasters for your summer drinks.
PVC is a valuable manufacturing material, mainly because it’s versatile. From coasters to school shoes, flexible and rigid PVC compounds can play essential roles in human advancement. IPC is a trusted supplier and we’re pioneers in the field. Contact us today.
Rigid PVC is a low-maintenance, strong, and lightweight plastic often used in many markets, including construction. It comes in a range of colors and finishes, and often used for window frames and sills when installing insulated glazing in new buildings; or to replace older single-glazed windows, as it is extremely weather-resistant.
zhejiang valtec plumbing equipment Co., Ltd.