The effect of the application of a powder additive of a phase change material on the ablative properties of a hybrid composite

Szczepaniak, Robert; Kozun, Grzegorz; Przybyłek, Paweł; Komorek, A.; Krzyżak, Aneta; Woroniak, Grzegorz

doi:10.1016/j.compstruct.2020.113041

Cited by 12 publications

(6 citation statements)

References 44 publications

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“…The use of an additive in the form of PCM (Phase Change Materials) causes some of the energy supplied to the system to be 'consumed' by the phase change energy of the PCM material. This improves the thermo-protective properties of the composite-it significantly reduces the ablative weight loss by about 30% and the temperature on the back surface of the tested composite by about 50% [22].…”

Section: Heat Aerogelmentioning

confidence: 92%

“…Despite the numerous requirements and the wide range of research to be carried out, dynamic development in the field of aerospace materials is currently taking place [12][13][14]. The numerous material solutions presented in the literature testify to the constant interest of the scientific community in making a real impact on the occurrence of synergies between the acquisition of knowledge and its practical application [15][16][17][18][19][20][21][22]. The issues related to the modification of polymer matrix composites are new with respect to materials science, although they are extremely extensive due to the intensification of research carried out in scientific centers all over the world [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Behavior of Aviation Polymer Composites at Various Weight Fractions of Physical Modifier

et al. 2021

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The aim of this study was to determine the effect of a selected physical modifier with different granularity and mass percentage on the dynamics of aerospace polymer composites. The tests were carried out on samples made of certified aerospace materials used, among other purposes, for the manufacture of aircraft skin components. The hybrid composites were prepared from L285 resin, H286 hardener, GG 280T carbon fabric in twill 2/2 and alumina (Al2O3, designated as EA in this work). The manufactured composites contained alumina with grain sizes of F220, F240, F280, F320 and F360. The mass proportion of the modifier in the tested samples was 5% and 15%. The tested specimens, as cantilever beams fixed unilaterally, were subjected to kinematic excitation with defined parameters of amplitude and frequency excitation in the basic resonance zone of the structure. The results, obtained as dynamic responses, are presented in the form of amplitude–frequency characteristics. These relationships clearly indicate the variable nature of composite materials due to modifier density and grain size. The novelty of this study is the investigation of the influence of the alumina properties on system dynamics responses.

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Section: Heat Aerogelmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Dynamic Behavior of Aviation Polymer Composites at Various Weight Fractions of Physical Modifier

et al. 2021

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“…This leads to requirement of materials that should have high‐temperature capability with high thermal conductivity. Current state of the art in the field is based upon the principle of ablation, meaning that the thermal protection part is usually made up of carbon reinforced composites that are used as a sacrificial side to dissipate the energy, making the any type of thermal barrier coating or protection systems not reusable and therefore not efficient or commercially viable 3 …”

Section: Introductionmentioning

confidence: 99%

“…Current state of the art in the field is based upon the principle of ablation, meaning that the thermal protection part is usually made up of carbon reinforced composites that are used as a sacrificial side to dissipate the energy, making the any type of thermal barrier coating or protection systems not reusable and therefore not efficient or commercially viable. 3 Ultrahigh temperature ceramics (UHTCs) are a class of materials with melting points exceeding 3000 • C which could be utilized for applications such as thermal protection systems and refractory applications. 4,5 The superiority of diborides compared to carbides in thermal conductivity makes them candidate materials for the thermal protection systems in hypersonic applications.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and simulation of porosity on thermomechanical properties of UHTCs under hypersonic conditions

Zuccarini¹,

Ramachandran²,

Russo³

et al. 2022

Int J Ceramic Engine & Sci

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Ultrahigh temperature ceramics (UHTCs) were analyzed for their suitability in hypersonic flight conditions using balanced heat equations, transport equation, and finite element modeling technique. Mathematical model was derived on the assumption that the induced porosity follows linear and parabolic solutions of Laplace equation and applied external load mimicking hypersonic conditions with critical heat flux ranging between 7 and 44 MW/m 2 . Simulations were carried out with four different UHTCs combinations and the results outlined a temperature rise exceeding 4700 • C with deformation observed on the fixed area and where the heat flux was generated. The influence of porosity had a greater impact on the performance of the material as it led to a reduction in deformation compared to dense samples. Porous UHTCs exhibited a good thermal shock resistance owing to the release of thermal stresses through pores, which also enhanced the thermal insulation of the structure.

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“…Currently, TPS can be mainly divided into two categories, namely, reusable and ablative thermal protection materials 4 . In particular, ablative materials are at the price of weight loss of materials and make use of a series of physicochemical reactions, such as gasification and sublimation of materials, to take heat away and achieve thermal protection 5,6 . Compared with reusable materials, ablative materials which are commonly fabricated using a polymer as the matrix can resist higher temperature and heat flow to meet the requirements of novel high‐speed vehicles 1,4,5 .…”

Section: Introductionmentioning

confidence: 99%

Lightweight, flexible, and heat‐insulated phenolic impregnated carbon ablator (PICA) with adjustable flexibility and high compressive resilience property

Liu

Sun

Yuan

et al. 2021

J of Applied Polymer Sci

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Phenolic impregnated carbon ablator (PICA) as a typical lightweight ceramic ablative material is widely used in thermal protection systems (TPS). However, the rigidity and poor mechanical property of the existing PICA limit its application in flexible TPS. For the purpose of solving these problems, a novel lightweight, flexible, and heat‐insulated PICA material is first successfully fabricated using resorcinol‐formaldehyde (RF) aerogel as matrix and flexible carbon fiber felt as reinforcement through vacuum impregnating and ambient pressure drying. The prepared composites have relatively low densities (0.20 ~ 0.27 g/cm3) and low thermal conductivities (~0.11 W/[m·K]) at room temperature. The flexible PICA has adjustable flexibility through changing the RF concentration of impregnated sols and exhibits excellent folding endurance, which can be folded more than 500 times without fracture. The material can recover to its original shape without fracture when the compressive strain is up to 60%, which shows high compressive resilience properties. The result of the back‐face temperature test indicates the prepared flexible PICA composite has improved thermal insulation property at high temperature by impregnating with RF aerogels. These results demonstrate the flexible PICA prepared in this work is a promising material that can be used in the flexible thermal protection field of aerospace.

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The effect of the application of a powder additive of a phase change material on the ablative properties of a hybrid composite

Cited by 12 publications

References 44 publications

Dynamic Behavior of Aviation Polymer Composites at Various Weight Fractions of Physical Modifier

Dynamic Behavior of Aviation Polymer Composites at Various Weight Fractions of Physical Modifier

Mathematical modeling and simulation of porosity on thermomechanical properties of UHTCs under hypersonic conditions

Lightweight, flexible, and heat‐insulated phenolic impregnated carbon ablator (PICA) with adjustable flexibility and high compressive resilience property

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