Although PVC has been replaced by other plastics now considered commodities, it has remained resilient in industries such as construction, electrical, and hardware, among others. This is mainly due to its low cost, formulation versatility, and ongoing innovations to meet new international regulations. Among these new solutions is the Calcium Zinc One-Pack for PVC piping, which combines the thermal stabilizer and necessary lubricants into a single product for PVC pipe manufacturing.
Previously, calcium zinc, as a dual-purpose compound acting as both a lubricant and a heat stabilizer, was a rather expensive option compared to the methyl tin heat stabilizer. Today, after the pandemic, coupled with the rising cost of tin metal due to the risk of shortages in Asian mines, Calcium Zinc package for PVC pipe It presents us with an interesting alternative for the future.
In Chemical Additives of Mexico We offer these lubrication packages for pipes PVC At an excellent price and with technical support to ensure you can operate it for extended periods without machine downtime and minimize waste. It's important to note that the grades we offer are suitable for both pipe extrusion and injection molding of fittings.
4 main advantages of using Calcium Zinc package for PVC pipe
- The first advantage we would like to mention is that manufacturers are always looking for ways to simplify their mixing operations to avoid errors, waste, and rework. With the conventional method of formulation PVC pipe, The manufacturer must add thermal stabilizer, external and internal lubricants, where any calculation problem results in significant costs for the production process. With the Calcium Zinc package for PVC pipe, We reduced the number of ingredients to resin, fillers, pigment and the pigment itself, thus simplifying the mixing process.
For manufacturers with a closed, automated powder feeding system, this solution is perfectly suited because it eliminates the need for liquid products, such as tin thermal stabilizer, which can cause handling complications. - The second advantage is that the paquete Calcio Zinc ha sido preferido en organizaciones como la PPI (Plastic Pipe Institute), por ser metales más nobles al consumidor y presentar muy bajo olor (en comparación con el metil estaño). De hecho, estos metales dentro de los estabilizantes térmicos van ganando cada vez más terreno, empezando con la industria médica y alimenticia, y acaparando mercados como el de juguetes, calzado y otros. Además, el consumidor nos ha demostrado su interés por plásticos de bajo olor, pues lo contrario genera cierta desconfianza, aunque su clasificación toxicológica varía según el grado y aplicación. Lo anterior se ve representado por las tendencias, donde la demanda del Calcium Zinc as an additive for PVC, has been steadily increasing in recent years.
- As mentioned earlier, the third advantage of Calcium Zinc pipe fitting kit, That's the cost, because after the pandemic many PVC additives They became quite expensive, prompting PVC pipe manufacturers to explore more viable alternatives. This, combined with new advances in calcium zinc alloys, has made it possible to manufacture white pipes with a good finish and mechanical properties that meet the standard requirements. Calcium Zinc package for PVC pipe It allows passing tests for fusion, chemical attack, impact resistance, finish, etc.
- Finally, for inventory and supply purposes, it is better to manage a smaller number of ingredients, as the absence of any one component can halt production. The COVID-19 pandemic highlighted the fragility of the supply chain, so having a simplified raw material plan offers financial advantages and reduces the risk of shortages. Consolidating lubricants and thermal stabilizers into a single product also reduces logistics costs, allowing larger quantities of a single SKU to be purchased without the concern of excess inventory (reducing the bill of materials).
How does the Calcium Zinc package for PVC pipe work?
Estos paquetes generalmente proveen menor tiempo de estabilidad térmica en comparación con otros estabilizadores como el metil estaño o el bario zinc. El fenómeno se explica por la formación de ZnCl₂: el estearato de zinc reacciona rápidamente con el HCl liberado durante el procesamiento; sin embargo, el ZnCl₂ resultante es un ácido de Lewis que actúa como catalizador acelerando la propia deshidrocloración del PVC — fenómeno conocido como ‘zinc burn’ o quemado por zinc. Por esta razón las formulaciones CaZn integran coestabilizadores como hidrotalcita, β-dicetonas o fosfitos, mientras que el estearato de calcio provee la estabilidad térmica de largo plazo regenerando al zinc por intercambio de ligandos. Es por ello por lo que, reduciendo el efecto cortante de la fricción, podemos reducir la temperatura de masa que está siendo plastificada dentro de nuestros equipos y retardar así degradación por calor.
Es importante resaltar que el paquete calcio zinc consiste en una mezcla de estearatos metálicos (Ca y Zn), ceras sintéticas, hidrotalcita como captador de HCl, β-dicetonas para el color inicial, fosfitos como coestabilizador y, en algunos casos, cargas como carbonato de calcio. Su función central es proveer estabilidad térmica libre de metales pesados a la vez que balancea la lubricación durante el procesamiento. Podemos decir que es un material hasta cierto punto, traje a la medida, para que la mezcla soporte condiciones extremas de fricción (como lo es con una extrusora doble husillo) a altas temperaturas.
Another important point is that, although this Calcium Zinc One-Pack for PVC piping was designed for this specific product, its application can actually be extended to rigid PVC in general. Of course, the peculiarities of each formulation should be reviewed, as there is no guarantee that all ingredients required for every application are included in this pack.
What are some disadvantages?
One disadvantage is that these packs—although now standardized so that a single product can work for multiple clients—depend heavily on the equipment specifications, the pipe schedule being manufactured, and the final application, which requires adjusting the lubrication capacity. To clarify, the level of lubrication needed for a sanitary pipe is not the same as for a higher-schedule hydraulic pipe. For this reason, it may happen that with Calcium Zinc One-Packs for PVC piping, the manufacturer needs to compensate by adding other lubricants, such as those offered by Chemical Additives Mexico, to produce a smooth, white, and glossy pipe.
It should also be noted that the main disadvantage of a Calcium Zinc One-Pack for PVC piping is that the formulator loses the ability to adjust the formulation, as everything is already concentrated in a single product with an unknown exact composition. Additionally, over time and with equipment wear, the pack usually requires an update or screw maintenance to ensure that the product continues to perform correctly, as it did initially.
However, if you are looking to avoid formulating or lack the mixing equipment for this task, in Chemical Compounds offers PVC compounds. These compounds are tailored to your needs and machine specifications to deliver a top-quality product. Don't hesitate to contact one of our expert technicians.
Los paquetes CaZn de alto desempeño para tubería, como los que distribuye Chemical Additives, cumplen con normas de contacto con agua potable como NSF 14 y con estándares industriales como PPI TR-4 y NMX-E-145. Esto los habilita para tubería de conducción de agua, drenaje sanitario, ventilación y aplicaciones donde la migración de aditivos al fluido no debe comprometer la salud del consumidor.