Mechanical properties of wollastonite reinforced thermoplastic composites: A review

Abstract

Wollastonite is a functional filler that has great potential to be used in thermoplastic composites, replacing more expensive reinforcement such as glass fiber. Wollastonite-reinforced polymer composite materials have attracted the attentions from research field and industries due to their biocompatibility and reinforcing ability in polymers. Due to the relatively high aspect ratio and hardness, wollastonite is able to improve the tensile and flexural strength of polymer composites. Many researches have been conducted to determine various properties of wollastonite reinforced polymer composites such as mechanical, flammability, thermal, and tribological properties in order to explore their potential in various applications. This review will focus on mechanical properties of wollastonite reinforced thermoplastic composites. Overall, it can be concluded that the properties of wollastonite-filled polymer composites are the function of filler content, adhesion interactions of wollastonite particles with polymer matrix, size and shape of wollastonite particles.Further research and development are needed to widen its application, and these include the use of nano-size wollastonite which can be produced synthetically as functional filler in thermoplastics. K E Y W O R D Scomposites, mechanical properties, thermoplastic, wollastonite

Surface Free Energy and Flexural Properties of Wollastonite Filled Polypropylene Composites

“…The structure of CaSiO3 particles, namely their aspect ratios, depends not only on natural conditions but also largely on the preparation and size reduction techniques used. The mechanical properties such as tensile and flexural strengths of CaSiO3 filled polypropylene composites are widely studied and usually an improvement was obtained for untreated and treated CaSiO3 (Chan et al, 2020). In addition, for polypropylene/wollastonite composites the studies were mainly focused on the determination of the adhesion parameters such as the work of adhesion and interfacial free energy of the composites (Svab et al, 2005;Svab et al, 2007;Svab et al, 2009).…”

UHMWPE/CaSiO3 Nanocomposite: Mechanical and Tribological Properties

“…The introduction of wollastonite in polymeric materials is primarily aimed at improving the mechanical properties of PCM such as elastic modulus, yield strength, and elongation at break, which have a strong effect on the resistance to mechanical deformation [39]. A high ratio of wollastonite grain length to diameter provides better load stress transfer from the polymer matrix to the filler when exposed to an external load, which leads to an increase in the mechanical properties of PCMs [38,[40][41][42]. PCMs containing wollastonite are used in many industries, covering a wide range of products: from thermoset and thermoplastic materials and products to automotive and aerospace products.…”

“…A number of studies have shown the effectiveness of using wollastonite (calcium monosilicate Ca 6 Si 6 O 18 with a theoretical composition, wt.%: CaO—48.3, SiO 2 —51.7 [ 25 , 26 , 27 , 28 , 29 ]) to increase the strength and durability of PCM [ 30 , 31 , 32 , 33 , 34 ]. Wollastonite is used in various high-tech fields including the ceramics and polymer industry [ 35 , 36 , 37 , 38 ]. The use of wollastonite as a filler in PCM is associated with its reinforcing effect on the polymer matrix, chemical inertness, high melting point, and environmental friendliness [ 38 ].…”

“…Wollastonite is used in various high-tech fields including the ceramics and polymer industry [ 35 , 36 , 37 , 38 ]. The use of wollastonite as a filler in PCM is associated with its reinforcing effect on the polymer matrix, chemical inertness, high melting point, and environmental friendliness [ 38 ]. The introduction of wollastonite in polymeric materials is primarily aimed at improving the mechanical properties of PCM such as elastic modulus, yield strength, and elongation at break, which have a strong effect on the resistance to mechanical deformation [ 39 ].…”

Optimization of Mechanical Properties and Damage Tolerance in Polymer-Mineral Multilayer Composites

“…Kausch et al, for example, found a strong increase in stiffness when adding alumina to polystyrene [ 1 ]. If surface treatment is performed correctly, mineral fillers can also increase the strength of a polymer matrix [ 2 ]. As a result of the reduced chain mobility, improvements were also found in the long-term creep behaviour [ 3 , 4 ].…”