Recent research progress and advanced applications of silica/polymer nanocomposites

Li, Hongwei; Cheng, Bingxu; Gao, Weichen; Feng, Chunni; Huang, Chongxing; Liu, Yang; Lü, Peng; Zhao, Hui

doi:10.1515/ntrev-2022-0484

Cited by 19 publications

(3 citation statements)

References 197 publications

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“…The results are displayed in Figure 7. Figure 7a indicates that the unmodified HA contains C, Ca, P, and O, of which C comes from the CO 50 Dynamic mechanical DMA and DSC analyses were conducted for the NRL and M-HA/NRL adhesive films. As indicated in Figure 8a,b, tan δ tends to increase first and then decrease as the temperature increases.…”

Section: Characterization Of Ha and M-hamentioning

confidence: 99%

Preparation of modified hydroxyapatite and its effect on natural latex film

Gong

Chen

et al. 2023

J of Applied Polymer Sci

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To effectively screen pathogens or eliminate allergy symptoms caused by the protein in natural latex products, the strength of the natural latex film must be improved and the water‐soluble protein content in the latex products must be reduced. In this article, response surface methodology was used to optimize the reaction conditions for the preparation of hydroxyapatite (HA), and the reinforcement and adsorption of water‐soluble proteins on natural rubber latex (NRL) by HA modified by coupling agent KH550 were studied. Modified HA was homogenously dispersed in the NRL, and the tensile and tear strengths of the rubber film were increased by 37.45% and 40.86%, respectively. In addition, modified HA adsorbs the water‐soluble protein from the latex film. Compared with pure NR film, its protein content is reduced by 50.79%. This article has a reference value for the preparation of high‐performance natural latex film with low protein content.

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Section: Characterization Of Ha and M-hamentioning

confidence: 99%

Preparation of modified hydroxyapatite and its effect on natural latex film

Gong

Chen

et al. 2023

J of Applied Polymer Sci

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“…Furthermore, the degree of crystallinity decreased with the incorporation of 1%NS and 2%NS content into PP nanocomposites, suggesting well-dispersed NS particles at low content which then restrict the movement of PP chains. The surface modification provides nucleating abilities to NS nanoparticles, but non-surface-treated NS nanoparticles have little or no influence on the PP-matrix crystallization process [8,32]. Also, it is important to notice the width of the DSC crystallization peak.…”

Section: Differential Scanning Calorimetry (Dsc) Of the Neat Pp And P...mentioning

confidence: 99%

Evaluation of Mechanical and Thermal Properties of Polypropylene-Based Nanocomposites Reinforced with Silica Nanofillers via Melt Processing Followed by Injection Molding

Seshweni,

Makhatha,

Botlhoko

et al. 2023

J. Compos. Sci.

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Polymer nanocomposites have been of great interest to packaging, energy, molding, and transportation industries due to several favorable properties including a higher resistance to stress and cracking even under flexed conditions, and also a chemical resistance to water, acids, and alkalis. The current work disseminates the studies on the mechanical and thermal properties of the polypropylene HHR102 polymer reinforced with nano dispersoids of silicon dioxide at varied weight fractions. The nanocomposites, fabricated via melt processing followed by injection molding, were tested for tensile strength, % elongation, tensile modulus, and impact toughness. Further, the samples were also subjected to dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) to determine the dynamic storage modulus and thermal stability. The addition of nano-silica in polypropylene HHR102 resulted in enhanced ductility and well-balanced tensile modulus; however, the tensile strength and impact toughness were found to be decreased. On the other hand, the storage modulus was significantly increased for all nano-silica (NS)-containing polypropylene HHR102 matrices. With the increased nano-silica content, the storage modulus was optimal. Further, with the lower weight loss of 30% and 50%, the thermal stability of the increased silica content PP nanocomposites was much affected. However, it improved at a weight loss of 30% for the lower silica content PP nanocomposite (PP-1%NS). The imbibition was found to increase with the increase in NS. The increase in imbibition is attributed to the micro-voids generated during ageing. These micro-voids act as channels for water absorption. Further, the degree of crystallinity of the nanocomposites was decreased as a result of inhibition by the nano-particles on the regular packing of polymer molecules. The structure–property correlations were explicated based on the achieved mechanical properties.

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“…In the decades since these materials were first discovered, a family of precipitated silica has been developed. However, due to the polar surface characteristics of the polyhydroxy groups of silica, it is easy to agglomerate and difficult to disperse in a non-polar rubber system [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrophobic Silica Particles on Mechanical Properties of Bromobutyl Rubber (BIIR)

Chen

Hou

Wang

et al. 2023

J. Phys.: Conf. Ser.

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Silica is one of the most important reinforcing fillers in the rubber industry. As an excellent reinforcing agent, it can endow rubber with higher tensile strength, elongation at break, elasticity, heat resistance, tear strength, etc., and is widely used in rubber products. BIIR has good air tightness, fatigue resistance, aging resistance, chemical resistance, and good processing performance, so it is widely used in tires and other industries. In this paper, three hydrophobic nano-powder materials, silica airgel, hydrophobic fumed silica and hydrophobic precipitated silica, were added to BIIR during rubber mixing and vulcanization. The effects of three nano-powder materials on the physical and mechanical properties of BIIR were compared. The results show that all three hydrophobic silica nano-powder materials can effectively improve the mechanical properties of BIIR, among which silica airgel has the most significant enhancement effect on the mechanical properties of BIIR. The tensile strength of 40% airgel-reinforced vulcanized rubber can be increased from 2.42MPa to 5.84MPa. The 100% constant tensile stress can be increased from 0.34MPa to 1.04MPa, while the tear strength is high (19.07N/mm), the hardness is extremely high (89HA), and the thermal conductivity is as low as 0.13439 (W/m·K).

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Recent research progress and advanced applications of silica/polymer nanocomposites

Cited by 19 publications

References 197 publications

Preparation of modified hydroxyapatite and its effect on natural latex film

Preparation of modified hydroxyapatite and its effect on natural latex film

Evaluation of Mechanical and Thermal Properties of Polypropylene-Based Nanocomposites Reinforced with Silica Nanofillers via Melt Processing Followed by Injection Molding

Effect of Hydrophobic Silica Particles on Mechanical Properties of Bromobutyl Rubber (BIIR)

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