Various types of chemical ingredients are needed in the rubber compounding process to obtain desired properties for a commercially useful application. To content with this, Plackett–Burman design (PBD) provides an efficient way of dealing with a large number of variables and identifying the most important parameter. This study reviews the exploitation of PBD to screen the significant effect of different compounding ingredients as well as oil palm ash (OPA) to the tensile properties of acrylonitrile butadiene rubber (NBR). The two most significant components were chosen for each tensile property. Furthermore, three-dimensional plots and their respective contour plots were used to investigate the simultaneous interactions of different factors on the responses studied. Based on the result obtained, the tensile strength showed an increasing trend when N-cyclohexyl-2-benzothiazole sulfenamide (CBS) concentration increased; however, the increase in stearic acid has resulted in a decline in tensile strength. On the other hand, the sulphur crosslinker with the largest effect value has shown a significant reduction towards the elongation at break. For tensile modulus, sulphur and OPA which are the two most significant variables had contributed to a synergistic effect as the concentration increased.

中文翻译：

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使用统计设计评估油棕和混合配料对丙烯腈-丁二烯橡胶的拉伸性能

橡胶混合过程中需要各种类型的化学成分，以获得用于商业用途的所需性能。为了满足这一要求，Plackett-Burman设计（PBD）提供了一种有效的方式来处理大量变量并确定最重要的参数。这项研究回顾了对PBD的开发，以筛选不同的配料成分以及油棕灰（OPA）对丙烯腈丁二烯橡胶（NBR）的拉伸性能的显着影响。为每种拉伸性能选择了两个最重要的成分。此外，使用三维图及其各自的等高线图来研究不同因素对所研究响应的同时相互作用。根据得到的结果，拉伸强度在增加时显示出增加的趋势。N-环己基-2-苯并噻唑亚磺酰胺（CBS）浓度增加; 然而，硬脂酸的增加导致抗张强度下降。另一方面，具有最大作用值的硫交联剂已显示出对断裂伸长率的显着降低。对于拉伸模量，硫和OPA这两个最重要的变量随着浓度的增加产生了协同作用。