Physical and mechanical behaviour of epoxy/hexagonal boron nitride/short sisal fiber hybrid composites

Agrawal, Alok; Awasthi, Tanmay; Soni, Dinesh Kumar; Sharma, Abhishek; Mishra, Vivek

doi:10.1016/j.matpr.2020.04.150

Cited by 14 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After 2 h of reaction, continue to slowly raise the temperature, and then raise the temperature to 135–140°C within 4 h. When the released HCl is not obvious, raise the temperature to 175–180°C, and the reaction ends in 2–3 h. It was then distilled under reduced pressure at 3 mmHg to remove low-boiling substances. Fractions at 170–175°C were collected to obtain CDOP as a white solid (Agrawal et al , 2020). The prepared CDOP and 100 mL of toluene were respectively added to a 250-mL flask equipped with a condenser, a thermometer and a mechanical stirrer, and heated to 80°C.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of new phosphorous-containing flame retardant and the properties of flame retardant epoxy resins

Zhang

Gong

et al. 2021

PRT

View full text Add to dashboard Cite

Purpose The epoxy resins need to be added with flame retardant to ensure safety in practical applications. There were a lot of highly toxic substances in the flame retardant used in the past, which caused greater harm to human body and the environment. Therefore, this study aims to propose a research on the synthesis of new phosphorous-containing flame retardant and the properties of flame retardant epoxy resins. Design/methodology/approach The flame retardant intermediate DOPO was synthesized using o-phenylphenol as the substrate. The intermediate was mixed with D4Vi under certain conditions to synthesize a new phosphorous-containing flame retardant. The flame retardant was added to the epoxy resins to prepare the flame retardant epoxy resins. Findings The experimental results show that the synthetic new phosphorous-containing flame retardant is far less harmful than the flame retardant used in the past and has extremely low toxicity, which is suitable for use in practical projects. Originality/value The new phosphorus-containing flame retardant synthesized by forms a more uniform and dense carbon layer in the combustion process, which well protects the underlying materials, thus improving the flame retardancy of epoxy resin materials. The harm of the new phosphorus-containing flame retardant is far less than that of ordinary flame retardant. The flame retardant used in the past has very low toxicity and is suitable for practical engineering.

show abstract

Section: Methodsmentioning

confidence: 99%

Synthesis of new phosphorous-containing flame retardant and the properties of flame retardant epoxy resins

Zhang

Gong

et al. 2021

PRT

View full text Add to dashboard Cite

show abstract

“…This approach raises the potential for agglomeration, resulting in a decline in the physical characteristics of the nanocomposite. [37][38][39][40][41] Within this investigation, we employed a systematic methodology to create hBN/epoxy nanocomposites by utilizing distinct dispersing solvents for hBN, specifically dimethyl ketone and isopropanol. A comparative analysis of the mechanical and morphological properties was conducted for nanocomposites prepared both with and without the solvents.…”

Section: Introductionmentioning

confidence: 99%

“…A few researchers have explored the influence of incorporating hBN into epoxy systems, directly introducing fillers into the epoxy matrix. This approach raises the potential for agglomeration, resulting in a decline in the physical characteristics of the nanocomposite 37–41 . Within this investigation, we employed a systematic methodology to create hBN/epoxy nanocomposites by utilizing distinct dispersing solvents for hBN, specifically dimethyl ketone and isopropanol.…”

Section: Introductionmentioning

confidence: 99%

Investigation on enhancement of filler dispersion and prediction of mechanical behavior of hexagonal boron nitride/epoxy nanocomposites through machine learning and deep learning models

Varughese,

M. S.

2024

Polymer Composites

View full text Add to dashboard Cite

Two‐dimensional hexagonal boron nitride (hBN) based nanocomposites exhibit excellent mechanical and thermal properties for various electronics, automotive, and aerospace applications. The present work gives a novel approach to fabricating hexagonal boron nitride/epoxy nanocomposites using isopropanol and dimethyl ketone as dispersants in two different routes and to predict mechanical characteristics employing deep learning and machine learning models. Nanocomposites were fabricated by employing casting techniques with varying concentrations of hBN, spanning from 0.25 to 1 wt%, utilizing dispersing solvents. The nanocomposites were analyzed for mechanical behavior, highlighting a notable improvement in the mechanical properties at 0.5 wt% isopropanol dispersed hBN. It showcased 61% improvement in tensile strength, 38.41% increase in flexural strength, and 35.80% increase in flexural modulus respectively as compared to the pristine epoxy. The Halpin Tsai analytical model showed agreement with the elastic modulus calculated experimentally. The fractured SEM micrograph supported the improved dispersion of the hBN nanocomposite. Thermal stability of 0.5 wt% isopropanol dispersed hBN/epoxy nanocomposite revealed an improvement by 8°C at 50% degradation as compared to the pristine epoxy. Linear regression, random forest regression, support vector regression, and deep neural network (DNN) were employed to predict values. DNN proved better results by showcasing low prediction loss and high R2 values (0.99468–0.99966).Highlights hBN/epoxy nanocomposite with isopropanol and dimethyl ketone as dispersants. 0.5% hBN loading in isopropanol exhibited improved mechanical characteristics. The Halpin Tsai model was employed for evaluating theoretical elastic modulus. Improved thermal stability and filler dispersion by optimized hBN/epoxy combination. Deep neural network showed higher R2 value and lower prediction loss.

show abstract

“…In addition, the thermal stability of the epoxy composite was improved by hybridizing it with glass and bamboo fibres, as well as coconut shell powder nanoparticles [15]. The influence of hexagonal boron nitride (hBN) and short sisal fibres based on an epoxy matrix on the physical characteristics was investigated, and the findings revealed that the density rose as the (hBN) particle content grew, while it reduced as the sisal fiber content increased [16]. Moreover, the titanium carbide particles improved the physical attributes of the combined synthetic and bio-reinforced epoxy composite with coconut fiber, resulting in a lowdensity composite with a high strength-toweight ratio [17].…”

Section: Introductionmentioning

confidence: 99%

Physical Properties of Hybrid Epoxy Composites Reinforced with Carbon Fiber and Ceramic Particles

Ali

Shihab

Mohamed

2022

DJES

View full text Add to dashboard Cite

Hybrid polymer compounds have become modern times, as their applications have increased, especially those reinforced with fibers and molecules due to their high performance, which allows them to be used in different applications. In this research, the dependence of the thermal conductivity and density of epoxy compounds on the volume fraction ratio of the reinforcements including carbon fibers, silicon carbide and alumina will be discussed. new hybrid epoxy compounds have been developed. The epoxy compounds reinforced with plain weave carbon fibers with different volume fractions of micro-particles of silicon carbide and alumina were prepared by hand lay-up. The physical properties including thermal conductivity and density of hybrid epoxy compounds were determined experimentally. The results showed an increase in the thermal conductivity by increasing the proportion of silicon carbide and alumina without affecting the density of the epoxy compound. This high improvement in thermal conductivity with low density in these hybrid epoxy composites have been driven them as possible nominations for electronic devices. The optimum content of hybrid epoxy composite for electronic applications is at SiC 10% and Al2O3 5% with 15 carbon fiber and 70 epoxy. Thus, a new polymer-based compound with improved thermal conductivity for electronic applications was produced.

show abstract

Physical and mechanical behaviour of epoxy/hexagonal boron nitride/short sisal fiber hybrid composites

Cited by 14 publications

References 14 publications

Synthesis of new phosphorous-containing flame retardant and the properties of flame retardant epoxy resins

Synthesis of new phosphorous-containing flame retardant and the properties of flame retardant epoxy resins

Investigation on enhancement of filler dispersion and prediction of mechanical behavior of hexagonal boron nitride/epoxy nanocomposites through machine learning and deep learning models

Physical Properties of Hybrid Epoxy Composites Reinforced with Carbon Fiber and Ceramic Particles

Contact Info

Product

Resources

About