PVC is one of the most visible materials used in various construction applications such as pipes, windows, floors, ceilings and more. greatly increasing quality and cost-effectiveness, pvc enables the production of modern architecture with exceptional results. However, the development of highly effective PVC products is possible if the necessary PVC stabilizers are added to the polyvinyl chloride (pvc) core. they help ensure that PVC products remain safe, durable and aesthetically pleasing for their intended use.
A PVC stabilizer is a chemical additive added to polyvinyl chloride (PVC) to improve its thermal and mechanical properties. The PVC stabilizer protects PVC from decaying and oxidation and substantially improves its processing characteristics.
Without adding stabilizers, PVC becomes brittle and prone to cracking as the stabilizers significantly impact the strength of PVC material. Apart from it, the stabilizers also prevent the PVC from losing its color and maintain the aesthetics of PVC products.
Plasticizers are bulky organic molecules, generally 300–600 g/mole in molecular weight, and also somewhat polar so as to be compatible with the PVC matrix. Good plasticization involves interspersing plasticizer molecules between PVC chains, breaking the small amount of native PVC crystallinity, and internally lubricating the polymer blend. While there is no formal chemical bond between plasticizer and polymer, the polar attraction between them makes plasticized PVC more than a simple physical mixture. The two are not readily separable in normal use.
To make PVC flexible at least 15 phr plasticizer is required. Less than this amount induces antiplasticization, and actually increases stiffness. Plasticizers can be used alone or in combination to get the desired properties such as tensile and tear strength or low temperature flexibility. The molar mass and physical size of the plasticizer and the solubility parameters of PVC plasticizers have the major effect on the dipole attraction and thus the final properties of a flexible compound.
Phthalates and adipates are the most commonly used plasticizers. Trimellitates are used in wire and cable and certain other applications where a relatively higher service temperature is required.
PVC stabilizers production started in Europe in 2010, at French Rousset plant
Full compliance with new REACH legislation
We match European Vinyl industry voluntary commitment called ‘Vinyl Plus’
to replace Lead stabilizers in flexible and rigid PVC applications
to propose alternatives for Tin stabilizers, allowing quick market introduction to our customers
ADK STAB RX-308 and ADK STAB RX-305 are core stabilizers with excellent heat stability, offering good compromise for processing
ADK STAB RX-308 and ADK STAB RX-305 are designed to fit the following applications
- water fittings,
- water pressure fittings,
- rain gutter fittings, etc…
ADK STAB RX-308 allows to reach VICAT point above 80,5 °C
ADK STAB RX-308 can be formulated to pass outdoor requirements for example rain gutter fittings
ADK STAB RX-305 allows to pass food contact requirements and is an alternative to di-octyl-mercaptide stabilizers