Synergetic effect of LDH and glass fiber on the properties of two- and three-component epoxy composites

Becker, Cristiane Miotto; Dick, Teo Atz; Wypych, Fernando; Schrekker, Henri Stephan; Amico, Sandro Campos

doi:10.1016/j.polymertesting.2012.04.009

Cited by 29 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of substitutable intercalated anions in LDH nanolayers facilitated the prospect to enlarge the interlayer space and to prepare exfoliated LDH-based materials. The advantages of tunable properties and multiple interactions have also made LDH an appealing nanofiller for polymer composites. − However, akin to polymer composites reinforced by other types of reinforcing fillers, the macroscopic properties of LDH based polymer composites depend upon immobilization, exfoliation, and homogeneous dispersions of LDH in the polymer matrix. Thus, suitable interlamellar surface modification of LDH is of utmost importance to improve the compatibility of hydrophilic LDH nanolayers with the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Rheological, Mechanical, and Thermal Properties of Silane Grafted Layered Double Hydroxide/Epoxy Composites

Chhetri

Adak

Samanta

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Judicious surface design of a nanofiller is pertinent to exploit its reinforcing competency in polymer composites. Herein, sodium dodecyl sulfate intercalated layered double hydroxide (LDH) was functionalized using 3-aminopropyltriethoxysilane (APTES), which was then dispersed in the epoxy matrix. The grafting of APTES on the LDH surface was confirmed by Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis. The robustness of the interface reflected the significant improvement of ∼104 and 90% in flexural strength and modulus at 0.25 wt % loading, while the tensile strength and Young̀s modulus were found to increase by ∼44 and 50.8%, respectively. The tangible improvement in interfacial interaction due to the functionlization was further reflected in the enhanced storage modulus and glass transition temperature, T g, by ∼36% and ∼6 °C, respectively, at 0.25 wt % loading. A rheological study confirmed the Newtonian behavior of the composites in the shear rate range of 0.1–100 s–1.

show abstract

Section: Introductionmentioning

confidence: 99%

Rheological, Mechanical, and Thermal Properties of Silane Grafted Layered Double Hydroxide/Epoxy Composites

Chhetri

Adak

Samanta

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Cristine M.Becker and others [2] conducted an experimental investigation to find the mechanical & thermal properties of two and three component epoxy composites. The resin transfer moulding (RTM) method was used to synthesize the Layerd doubled hydroxide (LDH) and three component (LDH/epoxy/glass fibre composites).…”

Section: And Znsmentioning

confidence: 99%

Review of Current Technology in Glass Fibre Composite

Singh¹

2017

IJMPERD

View full text Add to dashboard Cite

show abstract

“…The LDHs can promote the formation of a compact charred layer in the condensed phase during combustion. Furthermore, the intumescent char structure prevents the internal thermal decomposition products from getting out into the flame zone and the O 2 from getting into the polymer matrix [6].…”

Section: Possible Mechanism For Char Formationmentioning

confidence: 99%

“…To enhance the compatibility and flame retardancy, LDHs modified by intercalation have been studied extensively. The Mg-Al LDHs have modified by different intercalating agents, such as dodecyl sulfate [5], glycinate [6], poly(oxypropylene)-amindocarboxylic acid (POPamido acid) [7], amino benzoate and carbonate [8], and amino laurate [9]. The effects of the addition of these modified LDHs on the mechanical, thermal and fire retardancy properties of polymer nanocomposites have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Ammonium alcohol polyvinyl phosphate intercalated LDHs/epoxy nanocomposites

Dong

Zhu

Dai

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

To improve the flame retardancy and mechanical properties of epoxy (EP), a novel intercalated layered double hydroxides (ILDHs) were synthesized by a solution intercalation method using ammonium alcohol polyvinyl phosphate as intercalator. The ILDHs were examined by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), energy-dispersive spectrometry and scanning electron microscopy (SEM). The conditions for synthesis of ILDHs have been optimized. Thermogravimetric analysis indicated a good char-forming property of ILDHs. The flame retardancy of epoxy was improved by adding ILDHs. The EP composites containing 30-40 mass% ILDHs passed UL-94V-0 rating. Tensile strength was also enhanced by adding 30-40 mass% ILDHs, which was attributed to the involvement of physical cross-linking network among layered particles and polymer chains. The morphology and structures of residues generated during LOI test were investigated by SEM and FTIR to support a fundamental analysis for the mechanism of char formation. SEM observations of residues of the ILDHs/EP confirmed the formation of an incompact charred layer during combustion, which could inhibit the transmission of heat and mass during combustion. It may be inferred that ILDHs acted as a catalyst for esterification, dehydration and compact char formation of EP system.

show abstract

Synergetic effect of LDH and glass fiber on the properties of two- and three-component epoxy composites

Cited by 29 publications

References 19 publications

Rheological, Mechanical, and Thermal Properties of Silane Grafted Layered Double Hydroxide/Epoxy Composites

Rheological, Mechanical, and Thermal Properties of Silane Grafted Layered Double Hydroxide/Epoxy Composites

Review of Current Technology in Glass Fibre Composite

Ammonium alcohol polyvinyl phosphate intercalated LDHs/epoxy nanocomposites

Contact Info

Product

Resources

About