Functional polycarbonates for improved adhesion to carbon fibre

Kamps, Jan Henk; Scheffler, Christina; Simon, Frank; Heijden, Ruud van der; Verghese, Nikhil

doi:10.1016/j.compscitech.2018.08.035

Cited by 19 publications

(18 citation statements)

References 38 publications

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“…Improvements in interfacial shear strength of comparable approaches have been documented [7,8,9,10,11,12,13], and fragmentation tests or indentation were used to quantify the impact. The authors of this article have also investigated the modification of polycarbonate as a means to achieving improved adhesion [19], where an apparent interfacial shear strength of 33.9 MPa was found for the reference polycarbonate (HF1110). By using functional groups, the adhesion was improved to 42.2 MPa, in combination with a commercially available carbon fibre (unsized), without further information on the specific process parameters of production.…”

Section: Discussionmentioning

confidence: 99%

Electrolytic Surface Treatment for Improved Adhesion between Carbon Fibre and Polycarbonate

et al. 2018

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To achieve good mechanical properties of carbon fibre-reinforced polycarbonate composites, the fibre-matrix adhesion must be dialled to an optimum level. The electrolytic surface treatment of carbon fibres during their production is one of the possible means of adapting the surface characteristics of the fibres. The production of a range of tailored fibres with varying surface treatments (adjusting the current, potential, and conductivity) was followed by contact angle, inverse gas chromatography and X-ray photoelectron spectroscopy measurements, which revealed a significant increase in polarity and hydroxyl, carboxyl, and nitrile groups on the fibre surface. Accordingly, an increase in the fibre-matrix interaction indicated by a higher interfacial shear strength was observed with the single fibre pull-out force-displacement curves. The statistical analysis identified the correlation between the process settings, fibre surface characteristics, and the performance of the fibres during single fibre pull-out testing.

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Section: Discussionmentioning

confidence: 99%

Electrolytic Surface Treatment for Improved Adhesion between Carbon Fibre and Polycarbonate

et al. 2018

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“…Combined with the interaction analysis between the above sizing agents and CF and PC resin matrix, we presume the interface mechanism of PU structured sized CF reinforced PC composite materials. First of all, for blocked isocyanate PU, it is mainly because the high reactivity of isocyanate and the active hydrogen on the surface of CF can produce a strong chemical reaction to form PU or urea group and trimer by self‐crosslinking, and then react with PC resin mainly due to the transesterification reaction . The specific reaction process is shown in Figure (a).…”

Section: Resultsmentioning

confidence: 99%

Effect of polyurethane sizing agent on interface properties of carbon fiber reinforced polycarbonate composites

Wei-su

Yang

Yao

et al. 2019

J of Applied Polymer Sci

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This work is aimed at investigating how molecule structure of polyurethanes (PUs) as sizing agents influence the interface properties of carbon fiber (CF) reinforced polycarbonate (PC) composites. Effects of four PUs as sizing agents for CF on the interlaminar shear strength (ILSS) of CF reinforced PC composites are investigated. It is found that the three PUs except PC-PU as sizing agents on oxidized CF (OCF) made the ILSS of their reinforced PC composites increase up to 62.9 MPa by more than 24.8%. The chemical interaction between PU sizing agents and CF are attributed to high reactivity of isocyanate, but carbonate groups on PC-PU may have a chain unzipping reaction due to active groups on the surface of OCF. The chemical interaction between PU sizing agents and PC are attributed to transesterification. As a result, PUs containing isocyanate or polyester groups are ideal sizing agents for CF reinforced PC composites.

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“…Possible Reaction Mechanism. To explore the catalytic mechanism for the melt polymerization of IS and DPC catalyzed by LiLAc, 2,15,27,32 the NMR spectroscopy and DFT simulation calculations were used to research the interaction between the catalyst and IS or DPC, and MALDI-TOF MS was used to analyze the captured reaction intermediates. The insight into the effect of catalyst on the reactivity of the carbonyl of DPC or the hydroxyl group of IS was obtained.…”

Section: Acs Appliedmentioning

confidence: 99%

“…Polycarbonate (PC), as a thermoplastic engineering plastic, has been widely applied in electronics, automotive industries, medical equipment, food packaging, aerospace, and so forth because of its unique thermal, mechanical, and optical properties. 1,2 Bisphenol A (BPA), the monomer of traditional PC, is derived from petroleum and can cause endocrine disorders and harm health. For sustainable development and safety considerations, a wide range of biobased polycarbonates has become an urgent need.…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Synthesis of High-Molecular-Weight Biobased Polycarbonates by Lithium Lactate

Wang,

Quan

et al. 2023

ACS Appl. Polym. Mater.

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Biobased polycarbonates have attracted a wide range of interest due to sustainable resources; however, the synthesis of biobased polycarbonates with a high molecular weight remains a great challenge on account of the influence of catalysts. Herein, biobased poly(isosorbide carbonate) (PIC) with a high molecular weight of 105.0 kDa and excellent light transparency was synthesized via melt polycondensation of isosorbide and diphenyl carbonate by an efficient lithium lactate catalyst under mild conditions, including a short transesterification time of 0.5 h at a low reaction temperature of 150 °C, followed by polycondensation at 200 °C for 1 h. Furthermore, the structures of reaction intermediates and polymers were characterized, and the catalytic mechanism was elucidated by density functional theory calculations. Such a low-cost commercial catalyst would have a broad application prospect in the industrial production of PIC.

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Functional polycarbonates for improved adhesion to carbon fibre

Cited by 19 publications

References 38 publications

Electrolytic Surface Treatment for Improved Adhesion between Carbon Fibre and Polycarbonate

Electrolytic Surface Treatment for Improved Adhesion between Carbon Fibre and Polycarbonate

Effect of polyurethane sizing agent on interface properties of carbon fiber reinforced polycarbonate composites

Efficient Synthesis of High-Molecular-Weight Biobased Polycarbonates by Lithium Lactate

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