Enhancing morphology and compression properties of halloysite reinforced polyurethane nanocomposites using injection-moulding technique

Salaman, Ali J.; Al-Obaidi, Ali Assim; Takriff, Mohd Sobri

doi:10.1016/j.rinp.2019.102507

Cited by 9 publications

(4 citation statements)

References 36 publications

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“…Salaman et al investigated the importance of TPU as a suitable matrix material in halloysite‐reinforced composites. Its availability and excellent properties enhance the importance of its applications 82–84 …”

Section: Analysis Results and Discussionmentioning

confidence: 99%

Matrix‐phase material selection for shape memory polymer composites: A comparative analysis of multi‐criteria decision‐making

Omosa,

Mwema,

Akinlabi

et al. 2024

Polymer Engineering & Sci

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In the present study, the selection of suitable shape memory polymers (SMPs) to be used as the matrix‐phase material with various (In)organic filler materials to achieve the required optimum multi‐stimuli response in shape memory polymer composites (SMPC) systems is analyzed. The selection of these materials is based on their mechanical and physical properties as well as other underlying factors such as cost, availability, shape recovery rate, and aesthetic characteristics. In this study, the entropy method was applied to estimate the weightages of the various criteria while the gray relation analysis (GRA) and the technique for order preference by similarity to ideal solution (TOPSIS). Multi‐criteria decision‐making (MCDM) approaches have been used to rank the suitable matrix‐phase polymer materials for manufacturing shape memory polymer composites (SMPC) system. A total of eight alternative SMP matrix‐phase materials based on a set of nine criteria were analyzed and ranked. The proposed methodology and the result obtained thereof have been illustrated in detail. The results obtained from TOPSIS and GRA methods have been compared to conclude the effects of the material properties on the ranking and the selection of the SMP materials. Among all the eight alternatives considered, thermoplastic polyurethane (TPU) was found to be the best material in both the MCDM methods. The material cost, resistivity, % elongation, and hydrophobicity present the most influencing properties on the SMP material selection, whereas density presents no effect on the SMP matrix material selection. The robustness of the results for the comparative analysis was verified using TOPSIS methodology to validate its reliability. It was revealed that the TPU, polycarbonate, polypropylene, and epoxy‐resin/poly(lactic acid) are the most dominant matrix‐phase SMP material alternatives when a deviation in the entropy weights of the primary evaluation criteria is applied. The novelty of this study is the exploration and application of statistical MCDM methods of engineering material selection problems based on a set of decision criteria, which can be time‐consuming and costly while using experimental analysis methods.Highlights SMPCs are applicable engineering materials thus making their research viable. SMPC systems can undergo various shape changes under external stimuli. Selection of matrix‐phase polymer is critical in achieving desired objectives. GRA and TOPSIS MCDM approaches have been applied in the selection process. TPU was found as the best material in both methods.

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Section: Analysis Results and Discussionmentioning

confidence: 99%

Matrix‐phase material selection for shape memory polymer composites: A comparative analysis of multi‐criteria decision‐making

Omosa,

Mwema,

Akinlabi

et al. 2024

Polymer Engineering & Sci

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“…16, the mold has two inlets for chemicals, which are injected under a high pressure using a powerful injector mechanism, such as a high-pressure fluid pump or a piston cylinder mechanism. These two separate chambers are designed in such a way as to get proper amounts of both chemicals in a required proportion, which is controlled by metering devices at the inlets [150]. The fluid streams are mixed inside a mixing chamber, where a chemical reaction between both the fluids starts, and they are delivered towards the molding cavity, where fiber reinforcements are already present in the form of laminates.…”

Section: Reinforced Reactive Injection Molding (Rrim)mentioning

confidence: 99%

Advances in Natural-Fiber-Reinforced Composites: A Topical Review

Prajapati

Tevatia

Dixit³

2022

Mech Compos Mater

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A rapid growth in the research and employment of natural-fiber composites (NFCs) has been observed in the last years. This is explained by their many advantages, such as the biodegradability, eco-friendliness, a relatively low cost, and good mechanical properties. Despite these advantages, they also possess some undesirable features, such as difficulties in processing, high fiber moisture absorption, low impact strength, low durability, poor fire resistance, and poor compatibility between fibers and matrix. Much effort has been applied to minimizing these issues in order to extend the capabilities and applications of this group of materials. In an attempt to provide a better insight into NFCs, an up-to-date review of their manufacturing routes, different applications, and mechanical performance is very required. This review aims to address the above-mentioned issues challenges encountered when dealing with such materials.

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“…16, прессформа имеет два впускных отверстия для химикатов, вводимых под высоким давлением с помощью мощного механизма форсунки, такого как гидравлический насос высокого давления или механизм с поршневым цилиндром. Эти две отдельные камеры спроектированы таким образом, чтобы получать необходимое количество обоих химикатов (реактивных смол) в требуемой пропорции, контролируемой дозирующими устройствами на входах [150]. Внутри смесительной камеры потоки химикатов смешиваются, начинается химическая реакция между ними, а затем смесь поступает в полость формования, в которую уже помещены армирующие волокна в виде заготовки слоистого композита.…”

Section: таблunclassified

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2022

mkm

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что приводит к меньшему снижению предела текучести образца СВМПЭ+ +20% по массе ПП в зоне контакта и соответственно к меньшему износу.Показано, что введение частиц и/или волокон для повышения теплопроводности играет двоякую роль. С одной стороны, отвод тепла снижает температуру непосредственно в зоне контакта, в результате предел текучести снижается в меньшей степени и износ уменьшается. С другой стороны, наличие включений приводит к появлению зон концентрации напряжений в их окрестности и локализации деформаций в относительно податливой матрице. Поскольку включения меньших размеров вызывают меньшие концентрации напряжений, использование углеродных нанотрубок более эффективно, чем углеродных волокон.Благодарность. Работа выполнена по государственному заданию ИФПМ СО РАН (FWRW-2021-0010). Авторы выражают благодарность РФФИ и БРФФИ за финансирование исследования в рамках проекта № 20-58-00032_Бел_а (T20Р-223).

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Enhancing morphology and compression properties of halloysite reinforced polyurethane nanocomposites using injection-moulding technique

Cited by 9 publications

References 36 publications

Matrix‐phase material selection for shape memory polymer composites: A comparative analysis of multi‐criteria decision‐making

Matrix‐phase material selection for shape memory polymer composites: A comparative analysis of multi‐criteria decision‐making

Advances in Natural-Fiber-Reinforced Composites: A Topical Review

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