Electromagnetically shielding composite made from carbon fibers, glass fibers, and impact-resistant polypropylene

Cui, Lin; Lou, Ching‐Wen; Huang, Chen Hung; Huang, Chien‐Lin; Lin, Jia‐Horng

doi:10.1177/0892705712473624

Cited by 13 publications

(4 citation statements)

References 12 publications

(12 reference statements)

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“…However, it has low mechanical properties and does not have any functions, which restrict its application ranges [ 1 , 2 , 3 , 4 , 5 ]. Current studies reinforce PP in order to have greater mechanical properties; reinforcing materials include rigid particles fillers, such as nanoclay [ 6 , 7 , 8 ], calcium carbonate [ 9 ], and silicon dioxide [ 10 , 11 ], as well as short fibers, such as glass fiber, carbon fiber [ 12 , 13 , 14 , 15 , 16 , 17 ], and basalt fiber [ 18 ]. In particular, short glass fiber causes PP to be the strongest mechanically.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene/Short Glass Fibers Composites: Effects of Coupling Agents on Mechanical Properties, Thermal Behaviors, and Morphology

et al. 2015

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This study uses the melt compounding method to produce polypropylene (PP)/short glass fibers (SGF) composites. PP serves as matrix while SGF serves as reinforcement. Two coupling agents, maleic anhydride grafted polypropylene, (PP-g-MA) and maleic anhydride grafted styrene-ethylene-butylene-styrene block copolymer (SEBS-g-MA) are incorporated in the PP/SGF composites during the compounding process, in order to improve the interfacial adhesion and create diverse desired properties of the composites. According to the mechanical property evaluations, increasing PP-g-MA as a coupling agent provides the composites with higher tensile, flexural, and impact properties. In contrast, increasing SEBS-g-MA as a coupling agent provides the composites with decreasing tensile and flexural strengths, but also increasing impact strength. The DSC results indicate that using either PP-g-MA or SEBS-g-MA as the coupling agent increases the crystallization temperature. However, the melting temperature of PP barely changes. The spherulitic morphology results show that PP has a smaller spherulite size when it is processed with PP-g-MA or SEBS-g-MA as the coupling agent. The SEM results indicate that SGF is evenly distributed in PP matrices, but there are distinct voids between these two materials, indicating a poor interfacial adhesion. After PP-g-MA or SEBS-g-MA is incorporated, SGF can be encapsulated by PP, and the voids between them are fewer and indistinctive. This indicates that the coupling agents can effectively improve the interfacial compatibility between PP and SGF, and as a result improves the diverse properties of PP/SGF composites.

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Section: Introductionmentioning

confidence: 99%

Polypropylene/Short Glass Fibers Composites: Effects of Coupling Agents on Mechanical Properties, Thermal Behaviors, and Morphology

et al. 2015

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“…For example, Cheng et al [ 24 ] prepared CPCs using an ultrahigh-molecular-weight polyethylene/polypropylene (PP) blend with conductive CB, which exhibits an absorption-dominated EMI shielding effectiveness (EMI SE) as high as 27.29 dB over the X-band frequency range. Lin et al [ 25 ] developed CF/PP composites with an EMI SE of ~20 dB via adding 15 wt% CFs. Since both CNTs and graphene have exceptional mechanical, electric transport properties and extremely high aspect ratios, they make excellent conducting fillers in CPCs for EMI shielding applications [ 26 , 27 , 28 , 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Bio-Based Eucommia ulmoides Gum Composites with High Electromagnetic Interference Shielding Performance

Kang

Luo

et al. 2022

Polymers

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Herein, high-performance electromagnetic interference (EMI) shielding bio-based composites were prepared by using EUG (Eucommia ulmoides gum) with a crystalline structure as the matrix and carbon nanotube (CNT)/graphene nanoplatelet (GNP) hybrids as the conductive fillers. The morphology of the CNT/GNP hybrids in the CNT/GNP/EUG composites showed the uniform distribution of CNTs and GNPs in EUG, forming a denser filler network, which afforded improved conductivity and EMI shielding effect compared with pure EUG. Accordingly, EMI shielding effectiveness values of the CNT/GNP/EUG composites reached 42 dB in the X-band frequency range, meeting the EMI shielding requirements for commercial products. Electromagnetic waves were mainly absorbed via conduction losses, multiple reflections from interfaces and interfacial dipole relaxation losses. Moreover, the CNT/GNP/EUG composites exhibited attractive mechanical properties and high thermal stability. The combination of excellent EMI shielding performance and attractive mechanical properties render the as-prepared CNT/GNP/EUG composites attractive candidates for various applications.

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“…In case of environmental pollution and resources scarcity, human proposes more requirements to buffering package materials. Currently, a number of buffering materials are made of paper [1][2], foam [3][4], air cushion [5] and fibrous materials [6].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Property Evaluation of TPU Honeycomb Grid Buffering Composite Nonwovens

Li¹,

Chen²,

Lin³

et al. 2017

dtetr

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 Thermoplastic polyurethane (TPU) honeycomb grid can be served as a buffering packaging material due to its special construction. Using its structure property, structure body produces dynamic stress and strain when suffering from stress. One part of energy is stored, and other part is converted into heat dissipated by structure conduction, thus TPU honeycomb grid is a kind of viscoelastic materials with high compression. Therefore, this study designs to fabricate the buffering composite nonwoven with three-dimensional (3-D) honeycomb sandwiched structure using 3-D crimped PET inflame-retarding fibers and TPU honeycomb grid through nonwoven processing technique. In the processing, areal weight of PET inflame-retarding nonwoven compounded with TPU honeycomb grid was changed. By measurements of tensile strength, strength efficiency, tensile elongation and tear strength, effects of processing parameters on mechanical property of composite nonwovens were discussed. Testing result shows that TPU honeycomb grid buffering composite nonwoven has better tensile strength even with change of areal weight for PET nonwoven. When PET nonwoven is 250 g/m2, tensile strength along CD and MD is 285.6 N and 284.2 N respectively.

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Electromagnetically shielding composite made from carbon fibers, glass fibers, and impact-resistant polypropylene

Cited by 13 publications

References 12 publications

Polypropylene/Short Glass Fibers Composites: Effects of Coupling Agents on Mechanical Properties, Thermal Behaviors, and Morphology

Polypropylene/Short Glass Fibers Composites: Effects of Coupling Agents on Mechanical Properties, Thermal Behaviors, and Morphology

Bio-Based Eucommia ulmoides Gum Composites with High Electromagnetic Interference Shielding Performance

Mechanical Property Evaluation of TPU Honeycomb Grid Buffering Composite Nonwovens

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