PVC foaming regulator detailed introduction

PVC foaming regulator (ACR), also known as "solid plasticizer for rigid PVC", it firstly accelerates the melt adhesion and plasticization of the overall PVC material, reduces the processing temperature, and secondly increases the plasticity of the PVC material. Fluidity, thirdly, under the above effect, the melt strength of the material increases, so that the foamed cells are uniform and dense; the surface cleanliness of the material is increased in appearance, and the mechanical properties of the material are assisted in the internal performance.

For PVC foam materials, the role of foam regulators can be described as the greatest. The number of PVC foam regulator manufacturers has increased a lot in recent years. In order to price competition, the products are mixed.

There are many kinds of PVC foaming regulators with different performances, which are easy to dazzle customers. Improper use or improper selection of manufacturers will reduce the quality of foamed products, or even fail to produce products normally, so that production cannot be carried out normally, and the cost will increase. It is necessary to have an in-depth understanding of foaming regulators.

PVC foaming regulator is a copolymer formed by methacrylate and acrylate raw materials through a special emulsion polymerization process. It can also be called ACR or PVC Foam regulator.

In my country, for foaming regulators, viscosity is a very important indicator, which represents the molecular weight of foaming regulators. Viscosity from the initial <10.0, to 10.0-11.0, to the current >=12.5. According to market feedback, the viscosity of the foaming regulator for thick plates of Shandong CREATE Chemical Co., Ltd. even reached 13.0 or more, the performance was stable, and the dosage was relatively small.

For PVC foaming regulators, the melt strength cannot be ignored. Generally, the melt strength of foaming regulators with fast plasticization is generally low, and the melt strength of regulators with slow plasticization is high. The specific need depends on the product and formula to choose. For foam soles, 100, 200 series products with fast plasticization are generally used.

Generally, fast plasticization and high melt strength of foaming regulators are a pair of contradictions. Fast plasticization and high melt strength have always been a major bottleneck of foaming regulators. Similar products produced by the manufacturer, on the premise of the same foaming effect on the thick plate, the dosage can be appropriately reduced, and the cost performance is relatively high.

Under the current situation, the competition in the industry has intensified. In order to improve the price competitiveness of many downstream customers, especially the foamed wood-plastic products, they often add a large amount of small pipe materials, plastic steel materials, etc. to the foamed PVC formula. It greatly speeds up the plasticization of the overall material. Therefore, in order to obtain a good foaming effect, we suggest that the temperature of the first and second zones of the barrel should be appropriately lowered, or a foaming regulator with slower plasticization and higher melt strength should be used. This will not only make the foaming effect better, but also save a part of the foaming agent, and the quality of the PVC foamed products will also be better. Of course, choosing the right manufacturer is also a top priority.