scholarly journals composite plastics with microdispersions of SiC, TiN and cement

2019 ◽  
pp. 40-43
Author(s):  
D. L. Staroadomskyk
Keyword(s):  
Thermal Stability ◽  
Compressive Strength ◽  
Nitric Acid ◽  
Abrasion Resistance ◽  
Epoxy Polymer ◽  
Chemical Resistance ◽  
Strength Properties ◽  
Epoxy Composites ◽  
Bending Modulus ◽  
Thermal Stability Of

New data on the eff ect of a SiC and TiN fi llers on the practically important properties of epoxy polymer are presented. The possibilities for a signifi cant increase in microhardness – 1.5–2 times, bending modulus (1.4–1.7 times), compressive strength (for SiC), abrasion resistance and chemical resistance (in nitric acid and acetone/ethyl acetate) are established. At the same time, the thermal stability of the compositions and their strength properties is substantially increased. This is manifested in the eff ects of strengthening (compared with the unfi lled analogue) and plasticization of such composites after temperatures that destroy the ordinary polyepoxides (200–300°C. These eff ects are not covered in the literature and are named by the author as “eff ects of thermal strengthening and thermoplasticization of epoxy composites”.

scholarly journals Development and Analysis of the Physicochemical and Mechanical Properties of Diorite-Reinforced Epoxy Composites

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2421
Author(s):  
Amirbek Bekeshev ◽  
Anton Mostovoy ◽  
Yulia Kadykova ◽  
Marzhan Akhmetova ◽  
Lyazzat Tastanova ◽  
...  
Keyword(s):  
Gas Phase ◽  
Thermal Destruction ◽  
Epoxy Polymer ◽  
Epoxy Composite ◽  
Chemical Interaction ◽  
Strength Properties ◽  
Epoxy Composites ◽  
Mineral Filler ◽  
Pyrolysis Products ◽  
Thermal Stability Of

The aim of this paper is to study the effect of a polyfunctional modifier oligo (resorcinol phenyl phosphate) with terminal phenyl groups and a dispersed mineral filler, diorite, on the physicochemical and deformation-strength properties of epoxy-based composites. The efficiency of using diorite as an active filler of an epoxy polymer, ensuring an increase in strength and a change in the physicochemical properties of epoxy composites, has been proven. We selected the optimal content of diorite both as a structuring additive and as a filler in the composition of the epoxy composite (0.1 and 50 parts by mass), at which diorite reinforces the epoxy composite. It has been found that the addition of diorite into the epoxy composite results in an increase in the Vicat heat resistance from 132 to 140–188 °C and increases the thermal stability of the epoxy composite, which is observed in a shift of the initial destruction temperature to higher temperatures. Furthermore, during the thermal destruction of the composite, the yield of carbonized structures increases (from 54 to 70–77% of the mass), preventing the release of volatile pyrolysis products into the gas phase, which leads to a decrease in the flammability of the epoxy composite. The efficiency of the functionalization of the diorite surface with APTES has been proven, which ensures chemical interaction at the polymer matrix/filler interface and also prevents the aggregation of diorite particles, which, in general, provides an increase in the strength characteristics of epoxy-based composite materials by 10–48%.

scholarly journals Effect of Heat Assisted Bath Sonication on the Mechanical and Thermal Deformation Behaviours of Graphene Nanoplatelets Filled Epoxy Polymer Composites

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Jin-Luen Phua ◽  
Pei-Leng Teh ◽  
Supri Abdul Ghani ◽  
Cheow-Keat Yeoh
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Thermal Deformation ◽  
Epoxy Polymer ◽  
Deformation Behaviour ◽  
Filler Loading ◽  
Graphene Nanoplatelets ◽  
Epoxy Composites ◽  
Bulk Electrical Conductivity ◽  
Thermal Stability Of

Graphene nanoplatelets (GNP) filled epoxy composites ranged from 0.2 to 5 vol.% were prepared in this study using simple heat assisted bath sonication for better GNP dispersion and exfoliation. The effects of GNP filler loading via heat assisted bath sonication on the mechanical properties and thermal deformation behaviour were investigated. Improvements on flexural strength and fracture toughness up to 0.4 vol.% filler loading were recorded. Further addition of GNP filler loading shows a deteriorating behaviour on the mechanical properties on the composites. The bulk electrical conductivity of the epoxy composites is greatly improved with the addition of GNP filler loading up to 1 vol.%. The thermal expansion of epoxy composites is reduced with the addition of GNP; however poor thermal stability of the composites is observed.

Radiation-thermal stability of hydrazine nitrate in nitric acid solutions

2021 ◽  
Vol 141 ◽  
pp. 103968
Author(s):  
Elena Belova ◽  
Evgeniy Nazin ◽  
Anton Smirnov ◽  
Arseniy Obedkov
Keyword(s):  
Thermal Stability ◽  
Nitric Acid ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Hydrazine Nitrate ◽  
Thermal Stability Of

scholarly journals Effect of Nanodiamond Particles on Properties of Epoxy Composites

2008 ◽  
Vol 17 (1) ◽  
pp. 096369350801700 ◽  
Author(s):  
Zdeno Špitalský ◽  
Alexander Kromka ◽  
Libor Matějka ◽  
Peter Černoch ◽  
Jana Kovářová ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Epoxy Composites ◽  
Neat Epoxy ◽  
Light Transmittance ◽  
Cross Linking ◽  
Amino Groups ◽  
Multiwalled Carbon ◽  
Epoxy Network ◽  
Epoxy Nanocomposite ◽  
Thermal Stability Of

The epoxy nanocomposites filled with 0.1, 0.5, and 1 wt% nanodiamonds (nanoD) were prepared and their properties were compared with neat epoxy network or epoxy nanocomposite filled with 1 wt% multiwalled carbon nanotubes (MWCNTs). The obtained nanoD-epoxy composites increased significantly thermal stability of prepared nanocomposites in comparison with neat epoxy matrix. The exponential decay of light transmittance with increasing concentration of nanoD in sample was observed. The values of storage modulus G` and glass transition temperature Tg significantly decreased by addition of nanoD to epoxy network. This is caused by inhibition of cross-linking reaction of epoxy- and amino- groups by nanoD.

Long-term thermal stability of carbon fibre-reinforced addition-type polyimide composite in terms of compressive strength

2018 ◽  
Vol 28 (2) ◽  
pp. 115-133 ◽  
Author(s):  
Yuki Kubota ◽  
Takefumi Furuta ◽  
Takuya Aoki ◽  
Yuichi Ishida ◽  
Toshio Ogasawara ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Compressive Strength ◽  
Carbon Fibre ◽  
Thermal Stability Of

Effect of silica content on thermal stability of fumed silica/epoxy composites

2008 ◽  
Vol 93 (12) ◽  
pp. 2133-2137 ◽  
Author(s):  
J. Tarrío-Saavedra ◽  
J. López-Beceiro ◽  
S. Naya ◽  
R. Artiaga
Keyword(s):  
Thermal Stability ◽  
Fumed Silica ◽  
Silica Content ◽  
Epoxy Composites ◽  
Thermal Stability Of

Preparation and Test of Polyurethane Foam Composites with Alkali Lignin/Renewable PUF

2010 ◽  
Vol 150-151 ◽  
pp. 1167-1170
Author(s):  
Chang Yu Li ◽  
Li Li Liu
Keyword(s):  
Thermal Stability ◽  
Compressive Strength ◽  
Polyurethane Foam ◽  
Compression Property ◽  
Alkali Lignin ◽  
Foam Composite ◽  
Thermal Stability Of

The polyurethane foam composite was prepared by alkali lignin and renewable polyurethane foam (PUF). The thermal stability as well as compression property was studied. It was obtained from the TG curve and the DTG curve that the initial decomposition temperatures of polyurethane foam composites with 10% renewable PUF and without renewable PUF were 560.25K and 574.13K,respectively, which showed the renewable PUF affacted the thermal stability of the polyurethane foam composite. The compressive strength (σ10)was from 203kPa to 125 kPa , which were affacted by the dose of the renewable PUF.

scholarly journals Barrier Corrosion Protection Properties of Metakaolin Clay-Kadilux Epoxy Coatings on Galvanized Steel

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Fantaye Tasew ◽  
Ganesh Thothadri
Keyword(s):  
Thermal Stability ◽  
Water Absorption ◽  
Corrosion Protection ◽  
Epoxy Polymer ◽  
Acid Resistance ◽  
Steel Plates ◽  
Galvanized Steel ◽  
Inorganic Filler ◽  
Acidic Environment ◽  
Thermal Stability Of

Epoxy polymer, an illustrious barrier corrosion protective coating, was reinforced with metakaolin clay, an eco-friendly inorganic filler to enhance the barrier corrosion protection properties in water and in acidic environment on galvanized steel plates. Various proportions 0, 1, 3, 5, and 7 wt.% of metakaolin fillers were mixed intrinsically with kadilux epoxy and characterized for thermal stability, water absorption according to ASTM G31, and acid immersion according to ASTM D-570 standards, respectively. The reinforced coatings minimized the pore size and density, lower water absorption, and better acid resistance properties especially at 7 wt.% of the fillers. The thermal stability of the films improved beyond 5 wt.% of filler composition.

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