Modelling and optimization of a flexible poly(vinyl chloride) compound formulation for mine cables

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dc.contributor.author Fechter, Reinhard Heinrich
dc.contributor.author Sandrock, Carl
dc.contributor.author Kuhnert, Ines
dc.contributor.author Labuschagne, F.J.W.J. (Frederick Johannes Willem Jacobus)
dc.date.accessioned 2020-05-04T10:55:02Z
dc.date.available 2020-05-04T10:55:02Z
dc.date.issued 2019-01
dc.description.abstract Developments by Labuschagné et al. (Patent, WO 2006/123284 A2, 2006) in the manufacture of Layered Double Hydroxides (LDHs) have led to a patent describing a new effluent free synthesis method. A promising application for the LDH is as an additive for a flexible poly(vinyl chloride) (PVC) compound used for the insulation for cables used in South African underground mines. Consequently, a new formulation is required. Unfortunately formulating a PVC compound is a complex problem. The purpose of the investigation is to develop a method that can be used to find an optimum PVC formulation where the material requirements are met while also allowing for the quantitative analysis of the effect of the ingredients on the material properties. This is achieved by modeling the thermal stability, fire retardancy, and basic mechanical properties of the compound as a function of the relative proportions of the ingredients using 2nd order Scheffé polynomials. The empirical models are determined using statistical experimental design. Each model is interpreted using statistical analysis of the model terms which allows for the quantification of the effects and interactions of all the ingredients on the various response variables. The models are also used as constraints in the optimization of the PVC formulation for minimum cost. Parametric analyses are done to demonstrate how the optimization can be used to analyze the entire system taking into account the cost performance of the ingredients. Finally, it is demonstrated how the above approach requires significantly less time and labor to find an optimum formulation than the traditional approach. en_ZA
dc.description.department Chemical Engineering en_ZA
dc.description.librarian hj2020 en_ZA
dc.description.sponsorship National Research Foundation of South Africa, Technology and Human Resources for Industry Programme (THRIP) of South Africa and Greenfield Additives (Pty) Ltd. en_ZA
dc.description.uri https://onlinelibrary.wiley.com/journal/15480585 en_ZA
dc.identifier.citation Fechter, R.H., Sandrock, C., Kühnert, I. et al. 2019, 'Modelling and optimization of a flexible poly(vinyl chloride) compound formulation for mine cables', Journal of Vinyl and Additive Technology, vol. 25, no. S1, pp. E44-E58. en_ZA
dc.identifier.issn 1083-5601 (print)
dc.identifier.issn 1548-0585 (online)
dc.identifier.other 10.1002/vnl.21617
dc.identifier.uri http://hdl.handle.net/2263/74456
dc.language.iso en en_ZA
dc.publisher Wiley en_ZA
dc.rights © 2017 Society of Plastics Engineers. This is the pre-peer reviewed version of the following article : 'Modelling and optimization of a flexible poly(vinyl chloride) compound formulation for mine cables', Journal of Vinyl and Additive Technology, vol. 25, no. S1, pp. E44-E58, 2019, doi : 10.1002/vnl.21617. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1002/(ISSN)1548-0585. en_ZA
dc.subject Modelling en_ZA
dc.subject Optimization en_ZA
dc.subject Layered double hydroxide (LDH) en_ZA
dc.subject Poly(vinyl chloride) (PVC) en_ZA
dc.subject Mine cables en_ZA
dc.subject South Africa (SA) en_ZA
dc.title Modelling and optimization of a flexible poly(vinyl chloride) compound formulation for mine cables en_ZA
dc.type Postprint Article en_ZA


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