Investigation of Polymer/OMMT Nanocomposites-Influence Factor and Mechanism of Substructure Morphology

Zhao, Shi Hai; Li, Pei Yao; Gu, Zheng; Wang, Li; Song, Guo Jun

doi:10.4028/www.scientific.net/kem.852.89

Cited by 1 publication

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It consists of stacked, layered silicate about 1 nm thickness and some hydrophilic cations, such as Na + or K + ions, exist between the layers, which can be replaced with other cations by the ion exchange reaction (Zhou et al , 2014; Lin et al , 2007; Kong et al , 2017). Because of the strong hydrophilicity and interlayer electrostatic force, MMT should be organically modified with an organic intercalator and being used as a reinforcement (OMMT) for resin materials, so that it can be better dispersed in the resin matrix and obtain a strong two-phase interface effect between the matrix and OMMT (Zhao et al , 2020). Good interfacial behavior is essential to obtain resin matrix composites with better mechanical properties (Wang et al , 2013; Lee and Char, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/0369-9420.htm organic intercalator and being used as a reinforcement (OMMT) for resin materials, so that it can be better dispersed in the resin matrix and obtain a strong two-phase interface effect between the matrix and OMMT (Zhao et al, 2020). Good interfacial behavior is essential to obtain resin matrix composites with better mechanical properties (Wang et al, 2013;Lee and Char, 2002).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing the mechanical properties of bismaleimide resin with montmorillonite modified by two intercalators (amino-terminated polyoxypropylene and octadecyl trimethyl ammonium chloride)

Chen

Zhao

Liu

et al. 2021

PRT

View full text Add to dashboard Cite

Purpose Bismaleimide (BMI) is a kind of thermosetting resin and its application is usually limited by low toughness. In this paper, two kinds of reinforcement intercalator amino-terminated polyoxypropylene (POP) and octadecyl trimethyl ammonium chloride (OTAC) were designed and synthesized to toughen BMI resin and the toughening effect was compared and analyzed. The purpose of this paper is to toughen BMI resin and analyze the toughening effect of two reinforcements intercalator amino-terminated polyoxypropylene (POP) and octadecyl trimethyl ammonium chloride (OTAC). Design/methodology/approach Sodium-based montmorillonite (Na-MMT) was modified by POP and OTAC, and the ion-exchange reaction obtained organic montmorillonite (POP-MMT and OTAC-MMT). The polymer matrix (MBAE) was synthesized, in which 4,4’-diamino diphenyl methane BMI was used as the monomer and 3,3’-diallyl bisphenol A and bisphenol A diallyl ether were used as active diluents. And then, POP-MMT/MBAE and OTAC-MMT/MBAE composites were prepared using MBAE as matrix and POP-MMT or OTAC-MMT as reinforcement. The Fourier-transform infrared, X-ray diffraction and scanning electron microscope (SEM) of the filler and microstructure and mechanical properties of the composite were characterized to the better reinforcement. Findings POP-MMT and OTAC-MMT enhanced BMI-cured products’ toughness by generating microcracks in the polymer to absorb more fracture energy. Meanwhile, POP-MMT and OTAC-MMT were the main stress components and the enhancement of the interface interaction was beneficial to transfer the external force from the matrix to the reinforcement and improved the mechanical properties of the composite. Furthermore, with the intercalation rate increasing, the compatibility of the two phases was increased and the performance of MBAE was also elevated. Research limitations/implications BMI is generally used as aerospace structural materials, functional materials, impregnating paint and other fields. However, high crosslinking density leads to moulding material’s brittleness and limits a wider range of applications. Therefore, it has become an urgent priority to explore and improve the mechanical properties of BMI resin. Originality/value POP and OTAC have successfully intercalated Na-MMT layers to get POP-MMT and OTAC-MMT, and the interplanar crystal spacing and the intercalation rate were calculated, respectively. The results were corresponding with the SEM images of POP-MMT and OTAC-MMT. After that, the morphology of composites illustrated the compatibility was related to the intercalation rate. According to the mechanism of modified MMT toughening epoxy resin, when they were dispersed uniformly in the matrix, the composite’s mechanical properties had been significantly improved. Additionally, OTAC-MMT with a higher intercalation rate had better compatibility and interfacial force with the matrix, so that the mechanical properties of OTAC-MMT/MBAE were the best.

show abstract