What is K value in PVC resin?
K value (viscosity), is an empirical parameter closely related to intrinsic viscosity, often defined in slightly different ways in different industries to express viscosity based estimate of statistical molecular mass of polymeric material used particularly for PVC.
Why PVC resin price is high?
Globally, PVC supply has been constrained in 2021 and the shortage has been a major contributor to the rise in global prices, with scheduled maintenance, weather-related disruption and force majeure declarations adding to the pressure.
Are resin and PVC the same?
PVC is an acronym for polyvinyl chloride. A resin is a material often used in the production of plastics and rubbers. PVC resin is a white powder commonly used to produce thermoplastics. Alone, PVC resin is a white powder.
What is K value for resin?
K Value of PVC resin: K – Value is a measure of degree of polymerization or number of monomers in PVC chain or molecular weight. Since the % of PVC in films and sheets is predominant, its K value plays a very important role. K – Value has effect on properties of PVC resin, processing as well as properties of product.
Which is stronger PVC or resin?
Resin is also heavier than PVC and has a stronger feel to the material.
Why is resin better than PVC?
Resin figures will last for longer than PVC. Resin is one of the most flexible, durable, and environmentally friendly materials available. It is also UV sensitive, which means it does not yellow or show discoloration from sunlight or human exposure. PVC will deteriorate over time from the UV rays.
Which country produces the most PVC?
China is the largest PVC producer and consumer in the world with more than 20 million tons of PVC production every year.
What is K67 PVC resin?
Trade Name: PVC K67. PVC K67 is designed to give an easy processing product for extrusion rigid. applications since it has moderate melt viscosity with high melt strength. It is mainly. designed for pipe and profile products.
Why is resin pricing increasing?
Feedstock costs push some resin prices up as experts expect more increases to come. North American selling prices for polypropylene and polystyrene resins increased in February, mainly as the result of higher feedstock costs.
How long will the resin shortage last?
As it stands now, more than 60% of manufacturers are reporting resin shortages, according to survey data from AlixPartners. It expects the problem could persist for up to three years until production capacity catches up with demand.
Does resin last longer than plastic?
Although, plastics are more durable than resins. Plastics also contain lesser impurities than resins and are more stable. So, by comparison, we can see that resin is better than plastic for the environment.
Who makes PVC resin?
Westlake
Westlake manufactures PVC resins with molecular weights ranging from 0.68 IV to 0.92 IV. In the U.S., these resins are used for pipe, siding and trim, and other profile applications such as windows, doors and decking.
What is PVC 67?
67-01. Reon 67-01 is a medium molecular weight suspension type PVC resin suitable for rigid extrusion products. It is specially recommended for rigid pipes & conduits, rigid profiles, rigid sheets, unplasticised tubular film etc.
Why K value of PVC is determined instead of MFI?
The problem is that PVC (especially plasticized PVC) is in many respects different form normal thermoplastic melts. You can rarely see MFI values for PVC products. Instead of this the so-called K-value is given, which relates to the molecular weight, thus indirectly to flowability.