Study on catechol/tetraethylenepentamine and nano zinc oxide <scp>co‐modifying ultrahigh molecular weight polyethylene</scp> fiber surface to improve interfacial adhesion

Fang, Zhonghang; Tu, Qunzhang; Chen, Zhiyuan; Shen, Xinmin; Pan, Ming; Kang, Liang; Yang, Xuan

doi:10.1002/pat.5838

Cited by 9 publications

(6 citation statements)

References 48 publications

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“…As shown in Figure and Table S1, with the increase in the amount of the SiC filler, the tensile strength (σ) and elongation at break ( E b ) for the SiC/NR composites decreases. The imperfect interfacial interaction between the rigid SiC and soft NR chains results in the formation of defects and voids in the NR composites, thereby limiting the mobility of the polymer chains . On the other hand, the weak interaction between SiC and NR leads to stress accumulation in the composites, resulting in lower values of σ and E b than those of pure NR.…”

Section: Resultsmentioning

confidence: 99%

Improving the Thermal Conductivity of Natural Rubber Composites by Poly(catechol/polyamine) and Silane Surface Modification of Silicon Carbide

Wang,

Yang

2023

ACS Appl. Eng. Mater.

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With the emergence of the 5G era, the highprecision operation of electronic devices usually results in high heat flux and increases the local heating power, seriously limiting their stability and service life. This paper presents a method for producing a thermally conductive filler by first noncovalently modifying silicon carbide (SiC) particle with poly(catechol/ polyamine) (PCPA) and then covalently functionalizing it with 3-mercapto-propylethoxy-bis(tridecyl-pentaethoxy-siloxane) (Si747), which is labeled as SiC-PCPA-Si747. Next, the prepared SiC-PCPA-Si747 filler is added to the natural rubber (NR) matrix for producing SiC-PCPA-Si747/NR composites with high thermal conductivity (λ). The noncovalent modification of PCPA preserves the intrinsic λ of SiC, while the covalent functionalization with Si747 enhances the interfacial interaction between the filler and NR matrix. As a result of the reduced interfacial thermal resistance and the formation of high-efficiency heat conduction channels, the NR composite filled with 50 vol % SiC-PCPA-Si747 filler shows a λ value of 0.4980 W/(m•K), which is about 475% higher than that of pure NR (0.0866 W/(m•K)). In short, this method is costeffective and feasible and can be used to fabricate polymeric composites with high λ that can meet the future demands of advanced electronic devices.

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Section: Resultsmentioning

confidence: 99%

Improving the Thermal Conductivity of Natural Rubber Composites by Poly(catechol/polyamine) and Silane Surface Modification of Silicon Carbide

Wang,

Yang

2023

ACS Appl. Eng. Mater.

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“…Therefore, aramid 3D braided composites were modified by the chemical reaction of CA/PGPA on the AF surface. CA/PGPA was oxidized, polymerized, and co‐deposited on the surface of the fiber to introduce reactive groups on the fiber surface and improve the interfacial interaction of composites, thus improving the mechanical properties of 3D braided composites and achieving practical modification effects while reducing the treatment cost 33 . At the same time, the composite matrix was modified and toughened.…”

Section: Introductionmentioning

confidence: 99%

“…CA/PGPA was oxidized, polymerized, and co-deposited on the surface of the fiber to introduce reactive groups on the fiber surface and improve the interfacial interaction of composites, thus improving the mechanical properties of 3D braided composites and achieving practical modification effects while reducing the treatment cost. 33 At the same time, the composite matrix was modified and toughened. Using aramid nanofibers (ANF) 34,35 and graphene nanoparticles (G) 36,37 to modify epoxy resin, the π-π interaction between ANF and G reduced the agglomeration phenomenon of nanofillers, which led to effective stress transfer, prevented crack extension in the matrix, and improved the mechanical properties of the 3D braided composites.…”

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confidence: 99%

Mechanical properties of modified aramid three‐dimensional braided composites

Li,

Shi,

Xing

et al. 2023

Polymers for Advanced Techs

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Three‐dimensional (3D) braided composites have good integrity and high stability, but aramid fiber (AF) has an inert surface and poor interfacial bonding with resin, which affects the mechanical properties of aramid 3D braided composites and limits their development. This paper used catechol/pyrogallol polyamine (CA/PGPA) to modify the AF. The effects of different mass fraction ratios of CA/PGPA and different reaction temperatures on the surface properties of AF and the mechanical properties of 3D braided composites were investigated. The results showed that after the CA/PGPA modification, fiber surface oxygen‐containing groups increased, the roughness became more extensive, the fiber strength increased, and the interfacial shear strength increased. When AF‐CAPG‐II‐40°C, the mechanical properties of the 3D braided composites were improved most significantly. Compared with unmodified composites, the bending modulus was increased by 70%, the compression modulus by 124%, and the shear strength by 55.7%. The epoxy resin modification was carried out based on AF‐CAPG‐II‐40°C, and when the mass fraction of aramid nanofiber/graphene nanoparticle (ANF/G) was 0.7 wt%, 3D braided composites exhibited satisfactory mechanical properties. The bending modulus, compression modulus, and shear strength were increased by 15.3%, 23.3%, and 25.7%, respectively, compared with AF‐CAPG‐II‐40°C.

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“…Tu et al [ 17 ] constructed a polydopamine (PDA) functionalization platform and then deposited zinc oxide nanoparticles on the UHMWPE fiber surface and found that the interfacial adhesion with the rubber matrix was enhanced by 85.4%. Later, they [ 18 ] proposed a lower-cost surface modification strategy by replacing expensive dopamine with the catechol/tetraethylenepentamine two-component system.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Natural Rubber Tearing Strength by Mixing Ultra-High Molecular Weight Polyethylene Short Fibers

Huang

Wang

et al. 2023

Polymers

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Rubber products generally need to have high resistance to abrasion, tear, and cutting. Filling short fiber with strong mechanical properties and forming a net in the rubber matrix is a good method to realize the above aims. In this article, ultra-high molecular weight polyethylene (UHMWPE) short fibers with a diameter of 20 μm and a length of 2 cm were filled into natural rubber (NR) to improve the tear strength of the NR. The influence of the short fiber mass fraction and vulcanization conditions on4 the mechanical properties of the composites were investigated. The results show that the milling process and vulcanization conditions are key factors in enhancing tear resistance performance. Double-roll milling and vulcanization at 143 °C for 40 min result in strong interfacial adhesion between the UHMWPE short fibers and the NR. The addition of 2 phr of UHMWPE fiber increases the tear strength of the composite material by up to 150.2% (from 17.1 kN/m to 42.8 kN/m) while also providing excellent comprehensive performance. Scanning electron microscope (SEM) imaging confirmed that the UHMWPE short fibers are dispersed in the NR matrix homogeneously, and the interface is close and compact. As a control experiment, UHMWPE resin powder was directly filled into the NR, and then the composite was vulcanized using the same process as that used for the NR/UHMWPE short fiber composite. The results show that the mechanical strength of the NR/resin powder composite exhibits minor improvement compared with NR. As there is no complicated surface modification of the UHMWPE fiber, the results reported may be helpful in improving the tear resistance of the industrially prepared rubber conveyor belts.

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Study on catechol/tetraethylenepentamine and nano zinc oxide co‐modifying ultrahigh molecular weight polyethylene fiber surface to improve interfacial adhesion

Cited by 9 publications

References 48 publications

Improving the Thermal Conductivity of Natural Rubber Composites by Poly(catechol/polyamine) and Silane Surface Modification of Silicon Carbide

Improving the Thermal Conductivity of Natural Rubber Composites by Poly(catechol/polyamine) and Silane Surface Modification of Silicon Carbide

Mechanical properties of modified aramid three‐dimensional braided composites

Enhancing Natural Rubber Tearing Strength by Mixing Ultra-High Molecular Weight Polyethylene Short Fibers

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