PVC foam is a strong and durable material that serves a wide range of applications. It offers resistance to scratches and has a high fire rating. It comes in a variety of colours with a smooth finish. PVC foam is usually used in displays and stands due to its ability to accept paint and other decorative materials. PVC foams are described as closed-cell, water-resistant and with better physical properties in comparison to other foams of like density.
Breaking down PVC foam
PVC foam is made of an intricate network of polymers and polyuria. The interaction between these two polymer products is what makes the foam unique. To begin with, PVC is mixed with polyuria under specific conditions then the mixture is poured into a mould to form the foam boards. Once the mould is filled, it is shut tightly and heated. The heating process results in a solid material that is placed in a hot bath to increase its density. The PVC is then cut into various sizes and thickness depending on demand. This process results in the closed-cell aspect of the foam. PVC displays excellent physical properties such as solvent resistance.
PVC foams come in a range of densities from 3pcf to 25pcf.
Properties of PVC foam
PVC foam usually has a rigid structure. PVC foam has a low moisture absorption rate. It has a high resistance to fire and does not rot. PVC foams can be manufactured in a rigid or soft type. With rigid PVC foams, the manufacturing process involves higher temperatures than in the manufacture of ductile foam. Rigid PVC has a density of between 12 to 30% while ductile PVC requires extreme elongation to break down. Ductile PVC, however, has less impressive physical properties in comparison to rigid PVC. In addition, PVC has good thermo aspects as it starts softening at 65°C.
In addition, it bonds well with adhesives and resins. PVC can easily be cute, softened and reshaped by use of a heat gun or boiling water allowing for interaction with paints.
Polycarb
PVC and polycarbs are the most common thermoplastics. The difference between the two products is that PVC is made from chlorides while carbonates make up polycarbs. Polycarbs are a type of plastic. Polycarbs are similar to PVC foam due to their ability to be heated and moulded. Unlike other thermoplastics, polycarbs can endure transformation without breaking. Polycarbs are eco-friendlier in comparison to PVC foam.
Share20 March 2019
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