New thermostable heterocyclic binders and environmentally friendly technologies of production of composite materials

Mukhametov, R. R.; Akhmadieva, K.R.; Chursova, L. V.

doi:10.1134/s1070363211050355

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…At the same time, characteristics of the system monotonically improve with an increase in the molecular weight of the thermoplastic modifier up to 18 × 10 3 [41,42]. Evidently, the main technological problem arising with an increase in the molecular weight of the modifier is that the viscosity of the binder increases, a circumstance that is especially critical for promising outof-autoclave methods of PCM formation (RTM, VARTM) [43] and pultrusion [44]. A local minimum is observed on the rheokinetic curing curve during phase separation and is associated with the development of shear deformations predominantly on a welldeveloped interface [45].…”

Section: Modification Of Epoxy Composites With Thermoplasticsmentioning

confidence: 99%

“…Modern out-of-autoclave technologies for the preparation of composites, such as pressure impregnation, infusion, impregnation by film binders, etc., require the development of binders adjusted for their specifics [26,36,43]. One of the principal demands of these technologies is that the viscosity of the binder should be low to ensure efficient impregnation of the filler.…”

Section: Properties Of Composites Based On Modified Epoxy Systemsmentioning

confidence: 99%

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Improvement of the impact and crack resistance of epoxy thermosets and thermoset-based composites with the use of thermoplastics as modifiers

2016

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Main methods for the modification of epoxy composites that aim to increase their impact and crack resistances are considered with the main attention focused on modification with the use of thermally stable thermoplastics as additives. The influence of various factors (the modifier-matrix chemical bond and the morphology and molecular weight of the modifier) on the physicomechanical characteristics of the composites is discussed. New approaches to the toughening of polymeric composite materials based on epoxy thermosets that involve the use of modified binders or the introduction of a modifier between layers of the composite prepreg are advanced.

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Section: Modification Of Epoxy Composites With Thermoplasticsmentioning

confidence: 99%

Section: Properties Of Composites Based On Modified Epoxy Systemsmentioning

confidence: 99%

Improvement of the impact and crack resistance of epoxy thermosets and thermoset-based composites with the use of thermoplastics as modifiers

2016

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Enhancement of Crack Resistance of Phthalonitrile-Based Carbon Fiber Reinforced Plastics by Introducing Polyamide Nonwoven Materials

Kutovaya,

Poliakova,

Erdni-Goryaev

et al. 2023

Polym. Sci. Ser. B

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Polymer Boron-Containing Composite for Protecting Astronauts of Manned Orbital Stations from Secondary Neutron Radiation

Yastrebinsky,

Yastrebinskaya,

Gorodov

et al. 2024

J. Compos. Sci.

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This article considers the prospects of using heat-resistant polyimide boron-containing composites to protect astronauts of manned orbital stations from secondary neutron radiation. Variant calculations are performed regarding neutron and gamma-quanta flux distributions in a polyimide composite material with different boron content used to reduce capture radiation. The dependences of spatial distributions of thermal neutron flux density and the gamma-quanta dose rate in a polyimide composite layer with a boron content of 0 to 5% are obtained. An experimental assessment of the energy distribution of neutron and gamma radiation behind the protective polyimide composite is carried out. The introduction of boron atoms in an amount of 3.0 wt.% shows the absence of bursts of secondary gamma radiation energy in the composite, which is due to the high cross-section of thermal neutron absorption by boron atoms. As a result, with a material layer thickness of 3–10 cm, the gamma-quanta dose rate decreases by 2–3 times. The differential thermal analysis method showed that the upper limit of the working temperature of the polyimide composite is 500 °C. The polyimide matrix filled with boron atoms can find effective application in the development of new radiation-protective polymer materials used in manned orbital stations.

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New thermostable heterocyclic binders and environmentally friendly technologies of production of composite materials

Cited by 3 publications

References 1 publication

Improvement of the impact and crack resistance of epoxy thermosets and thermoset-based composites with the use of thermoplastics as modifiers

Improvement of the impact and crack resistance of epoxy thermosets and thermoset-based composites with the use of thermoplastics as modifiers

Enhancement of Crack Resistance of Phthalonitrile-Based Carbon Fiber Reinforced Plastics by Introducing Polyamide Nonwoven Materials

Polymer Boron-Containing Composite for Protecting Astronauts of Manned Orbital Stations from Secondary Neutron Radiation

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