General Description
PVC plasticizers are additives which provide PVC flexibility through solvation process. This is what allows PVC to be transformed into a very flexible product such as hose or a toys.
PVC plasticizers are quite easy to handle and also make PVC processing much easier. Knowing which plasticizer to use is not only a matter of flexibility but also additional properties an might want in the end-product. Some of these are great low-flex temperatures, low toxicity, chemical extraction resistance, volatility, among others.
When we use the term solvating, it actually refers to the reduction in heat distortion temperature (HDT). The upside is we gain elongation and flexibility rate but we normally sacrifice tensile strength. We also want to warn the formulator when using plasticizer at low levels in rigid PVC, as this can provoke a deformation in the shape of the end-product.
DOP plastizicer is the most common in the PVC market. It provides great compatibility and therefore, low mixing and dry-up times. Not suitable in markets where the presence of phtalates is a problem for human contact. It is a transparent liquid with low odor. It can also be known as DEHP.
During the mixing process It is recommended to add plasticizers before other additives that could prevent the incorporation of this material into PVC. Allow sufficient time during mixing for the blend to dry and avoid further problems.
During the mixing process It is recommended to add plasticizers before other additives that could prevent the incorporation of this material into PVC. Allow sufficient time during mixing for the blend to dry and avoid further problems.
DOTP is one the most common plasticizers for PVC as a DOP replacement. It shows great compatibility but usually needs a little higher dose than DOP to achieve the same flexibility. It is an increasingly prefered grade because of its low toxicity and FDA approval. It a transparent low odor liquid. Great elongation properties and low temperature flexibility.
TOTM plasticizer provide PVC with excellent dielectric properties for wire and cable. It is also a great option for chemical-migration resistance in applications such as industrial boots. It has low volatility compared to other plasticizers but has limited absorption capacity. It can cause some difficulties to achieve proper fusion so it should be formulated with a correct lubricating system. One should also be aware of time and order addition during mixing process.
During the mixing process It is recommended to add plasticizers before other additives that could prevent the incorporation of this material into PVC. Allow sufficient time during mixing for the blend to dry and avoid further problems.
Chemical Additives is a Mexican company that distributes raw materials for the plastic industry both locally and internationally.
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