PVC Additives Articles
Concept explainers, comparisons, and how-tos.
Articles
Calcium-Zinc vs Lead vs Tin Stabilizers: Selection for Rigid and Flexible PVC
There is no universally best PVC stabilizer chemistry. Calcium-zinc, tin, and lead stabilizers were each developed to solve a different combination of thermal, optical, mechanical, cost, and regulatory constraints, and they continue to co-exist in industry…
ReadInternal vs External Lubricants in PVC: Balance, Fusion Time and Plate-Out
Not every PVC processing problem is a lubrication problem. This article helps a production engineer decide when lubrication is the first place to investigate, and when it probably is not. Lubricants do not make PVC stronger. They help PVC process…
ReadProcessing Aids & Acrylic Impact Modifiers: When You Actually Need Them
A processing aid fixes the melt — fusion, melt strength and surface. An acrylic impact modifier fixes the finished part — brittle failure in service. Neither one fixes a stabilizer or lubrication problem.
ReadPVC Formulation by Application: Pipe, Profile, Sheet, Cable and Foam
Every rigid PVC application uses the same four functional roles — thermal stabilizer, lubricant balance, processing aid and impact modifier — but weights them differently. Pipe is dominated by throughput, fusion consistency and long-term pressure…
ReadPVC Additives Explained: Stabilizers, Lubricants, Processing Aids and Impact Modifiers
Poly(vinyl chloride) is thermally unstable and, on its own, cannot be melt-processed into a usable part. Every PVC formulation is therefore an additive system built from four functional families, each solving a different problem: stabilizers protect the…
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