Abstract
The quality of vinyl floorings depends mainly on the right control of the formation of poly (vinyl chloride) (PVC) foam structure. Many process parameters influence the cellular structure and final properties of the PVC foam. In this paper the influence of concentration of blowing agent and calcium carbonate filler as well as temperature and time of the blowing process on the expansion ratio and tear strength of the PVC foam were studied. Moreover, regression analysis was performed in order to determine the significance of studied parameters influence on expansion ratio and tear strength of PVC foams. It was found that concentration of the blowing agent in the plastisol mixture had the principal influence on the expansion ratio of the PVC foam. Tear strength was found to depend more or less equally on all studied parameters. The study has also shown that the addition of calcium carbonate filler had insignificantly lowered the expansion ratio but at the same time it could significantly lower the cost of the final product. This effect was practically employed to improve the economic efficiency of the PVC floorings production in JUTEKS plant in Russia.
Highlights
The quality of vinyl floorings depends mainly on the right control of the formation of poly (PVC) foam structure
Investigations about PVC foams dealt with the effect of viscosity regulators and how they can be used to control the process of foam formation [3]
We have investigated the effect of four process parameters on expansion ratio and tear strength of PVC foam
Summary
The quality of vinyl floorings depends mainly on the right control of the formation of poly (vinyl chloride) (PVC) foam structure. In this paper the influence of concentration of blowing agent and calcium carbonate filler, as well as temperature and time of the blowing process on the expansion ratio and tear strength of the PVC foam, were studied. The study has shown that the addition of calcium carbonate filler had insignificantly lowered the expansion ratio, but at the same time it could significantly lower the cost of the final product This effect was practically employed to improve the economic efficiency of the PVC floorings production in JUTEKS plant in Russia. A study which encompassed analysis of four different PVC types and eight different plasticizers, individually or as mixtures, Different studies have dealt with the influence of the stabilizer type [7], type and level of the acrylic processing aid [8], and processing conditions [9] on foam density and on the foam properties. Multiple regression analysis was employed in order to determine the significance of the influence of the different parameters on the expansion ratio and tear strength
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