Use of oxide nanoparticles and organoclays to improve thermal stability and fire retardancy of poly(methyl methacrylate)

Laachachi, Abdelghani; Leroy, Éric; Cochez, M.; Ferriol, M.; Cuesta, J. M. Lopez

doi:10.1016/j.polymdegradstab.2005.01.019

Cited by 190 publications

(88 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, amalgamation of 2-5 wt.% nano-SiO 2 into the polymer matrix would be satisfactory for enhancement of electrical properties [12]. Consequently, SiR nanosilica composites at 2.5 wt.% showed improved erosion and tracking resistance compared to microsilica composites [13,14]. Some researchers also reported hybrid (micro-nano) polymer composites [15,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of micro/nano-SiO$_{2}$ on mechanical, thermal, and electrical properties of silicone rubber, epoxy, and EPDM composites for outdoor electrical insulations

Khan¹,

Amin²,

Ali³

et al. 2017

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Abstract:In this paper the influence of micro-sized (3 µ m) and nano-sized (10 nm) silica (SiO 2) on mechanical, thermal, and electrical properties of silicon rubber (SiR), epoxy, and ethylene propylene diene monomer (EPDM) composites is presented. The micro-and nano-sized SiO 2 particle-filled SiR, epoxy, and EPDM composites were formulated with 20% microsilica and 5% nanosilica by weight respectively. Among these composites, SiR-SiO 2 amalgamation was performed by mixing using an ultrasonication procedure. Epoxy-SiO 2 was compounded in two steps, i.e. dispersion of fillers and mixing, whereas EPDM-SiO 2 compounding was performed with a two roll mill technique. With the addition of micro/nano-SiO 2 , the composites showed enhanced tensile strength of ∼ 2.7 MPa, improved hardness, and reduced elongation at break. Further incorporation of micro/nano-sized particles resulted in high thermal stability for SiRnano composites (SNCs) as compared to epoxy and EPDM composites. Compared to SiR and EPDM composites, epoxy-nano composites showed the highest value of dielectric strength, i.e. 38.8 kV/mm. Meanwhile, the volume and surface resistivity of SNCs were found higher as compared to other investigated samples. Promising properties of SiR nanocomposites among all the investigated samples suggest that their application is more suitable for utilization in outdoor electrical insulations.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of micro/nano-SiO$_{2}$ on mechanical, thermal, and electrical properties of silicone rubber, epoxy, and EPDM composites for outdoor electrical insulations

Khan¹,

Amin²,

Ali³

et al. 2017

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

show abstract

“…The improved thermal stability observed in Fe 2 O 3 /TiO 2 -PMMA composites was the result of two main factors: i) the presence of the nanoparticles restricted the mobility of polymer chains, and ii) adsorption of the PMMA on the oxide surface via metoxycarbonyl groups. 17,18 Subsequently, it was shown that relatively high additions of TiO 2 nanoparticles into PMMA also play a catalytic role on the polymer thermal degradation. 19,20 This catalytic effect was explained through the interaction of the methoxy group of the methacrylate with the hydroxyl groups present at the surface of the oxide particles.…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO on the Thermal Degradation Behavior of Poly(Methyl Methacrylate) Nanocomposites

Japić

Marinšek

Orel

2016

ACSi

View full text Add to dashboard Cite

In the memory of Janez (Janko) Jamnik our dear friend and co-worker. AbstractThe influence of ZnO nanoparticles on the thermal degradation behavior of poly(methyl methacrylate) (PMMA) was tested using thermoanalytical techniques. The studied materials were investigated using TG, DTA, EGA, XRD, SEM and TEM. The ZnO nanoparticles were synthesized via precipitation by adding LiOH into Zn 2+ water/ethylene glycol solutions. The ZnO-PMMA nanocomposites were prepared by adding the appropriate amount of ZnO into MMA and subsequent MMA radical polymerization. According to the experimental results and model-free isoconversional activation energy calculations, the addition of ZnO into PMMA played a double role. The ZnO concentrations up to 0.15% stabilized the composite by shifting the degradation interval toward higher temperatures and increasing the apparent activation energy relative to pure PMMA. At higher concentrations, the catalytic effect of ZnO started to prevail and was reflected in the lower temperature intervals of intense PMMA degradation and lower apparent activation energy. The addition of ZnO generally did not change the nature of the PMMA decomposition process.

show abstract

“…Replacement of Al 2 O 3 in the composite by TiO 2 nanoparticles changes the TNC melting temperature to 296.0 °C and the decomposition temperature to around 403.9 °C. This effect occurs because the presence of some oxides (such as TiO 2 ) may change the decomposition pathway of the organic compounds by increasing the quantity of releasing heavy components and decreasing the amount of evolved gas [13][14][15]. Furthermore, these nanoparticles give rise to a high diffusivity and better heat transfer through the bulk sample [15].…”

Section: Comparison Of the Pure Tnc Kinetic Data With That For Nanocomentioning

confidence: 99%

“…Organic/inorganic nanocomposites including one or several nanomaterials have been widely investigated in recent years [13][14][15]. Depending on the number of particles with dimensions in the nanometer range, nanomaterials can be classified into three main categories, i.e.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanomaterials onThermal Stability of 1,3,6,8-Tetranitro Carbazole

Pourmortazavi

Rahimi‐Nasrabadi

Rai

et al. 2017

Cent. Eur. J. Energ. Mater.

View full text Add to dashboard Cite

1,3,6,8-tetranitro carbazole (TNC) as a secondary explosive is used in composite explosive formulations in order to reduce the sensitivity and increase the stability of the explosive composites. In this work, the thermal stabilities of pure TNC and its nanocomposites prepared via three different nanoparticles were studied by thermal analysis, i.e. differential scanning calorimetery (DSC) and thermogravimetry (TG) techniques. Thermal analysis data revealed that the thermal behavior of pure TNC is significantly different from the nanocomposites studied. Pure TNC decomposed completely during a single step in the temperature range 385-425 °C. However, the addition of nanoparticles to the TNC powder leads to higher thermal stability in comparison with the pure TNC. The decomposition kinetics of TNC and its nanocomposites were studied by non-isothermal DSC at several heating rates. Thermokinetic and thermodynamic parameters corresponding to the thermal decomposition of pure TNC and nanocomposites were computed and compared. The results showed that the addition of nanoparticles to the TNC powder has a considerable effect on the thermal stability of the explosive.

show abstract

Use of oxide nanoparticles and organoclays to improve thermal stability and fire retardancy of poly(methyl methacrylate)

Cited by 190 publications

References 12 publications

Effect of micro/nano-SiO$_{2}$ on mechanical, thermal, and electrical properties of silicone rubber, epoxy, and EPDM composites for outdoor electrical insulations

Effect of micro/nano-SiO$_{2}$ on mechanical, thermal, and electrical properties of silicone rubber, epoxy, and EPDM composites for outdoor electrical insulations

Effect of ZnO on the Thermal Degradation Behavior of Poly(Methyl Methacrylate) Nanocomposites

Effect of Nanomaterials onThermal Stability of 1,3,6,8-Tetranitro Carbazole

Contact Info

Product

Resources

About