Thermal insulation and structural reliability of modified epoxy resin‐based ablation thermal protection coatings in aerothermal‐vibration coupling environment

Abstract

Novel hybrid ablation thermal protection coatings (FHMP‐ATPCs), employing iron trioxide (Fe2O3) powder, hollow glass microspheres, and mica powder as the fillers in hydroxyl‐terminated silicone oligomer‐bridged epoxy resins (PSG) copolymer, is investigated using an aerothermal‐vibration coupling test system. The ablation behavior and structural reliability of FHMP‐ATPCs with varying coating thickness were studied. During the test, the total enthalpy of airflow and dynamic pressures are 23 MJ/kg and 300 Pa, accompanied by the random vibration with a frequency of 20–2000 Hz and a total root‐mean‐square acceleration of 14.9g. The maximum surface and back‐face temperatures of the coating with the thickness of 2 mm reached 836.2°C and 156.4°C, respectively. Results also showed that the reduction of thickness obviously suppressed the surface temperature and increase in back‐face temperature yet maintaining high structural reliability. Compared with DGEBA‐based coatings, the PSG‐based coatings showed excellent structural reliability during the test. The study provides a solution for obtaining high performance ATPCs, which are highly desired for supersonic vehicles.

Interfacial tailoring of basalt fiber/epoxy composites by metal–organic framework based oil containers for promoting its mechanical and tribological properties

“…[1][2][3] Today, EP materials are widely used in automotive, aviation, rail transportation, and construction. [4][5][6][7] However, neat EP suffers a lot from its brittleness, fatigue resistance, and poor tribology behavior. [8][9][10] Therefore, various enhancers, such as carbon fiber, glass fiber, and natural fiber have been employed to overcome these shortcomings.…”

Effect of weaving parameter and resin structure of lightweight integrated multifunctional composite on thermal protection performance in extreme environment

“…[ 18 ] However, the lightweight composite would be ablated significantly when subjected to long time, oxidative environment. [ 19,20 ] In order to improve the ablation resistance of phenolic aerogel, the modification of phenolic matrix has been concerned. [ 21,22 ] Various fillers were used in these composites, such as ZrB 2 , ZrO 2 , TiB 2 , B 4 C, SiC, SiO 2 , and GO.…”

“…PICA, with low density (0.22 g/cm 3 ), low thermal conductivity and excellent ablation resistance properties, was used as the heat shield of "Stardust" to withstand the maximum temperature of about 1600 C. [18] However, the lightweight composite would be ablated significantly when subjected to long time, oxidative environment. [19,20] In order to improve the ablation resistance of phenolic aerogel, the modification of phenolic matrix has been concerned. [21,22] Various fillers were used in these composites, such as ZrB 2 , ZrO 2 , TiB 2 , B 4 C, SiC, SiO 2 , and GO.…”

Study on the Design of Thermal Vibration Integrated Reliability Enhancement test Profile based on Multi-stress Failure Excitation Simulation

“…The microstructure and crack extension behavior of CCGA (Ceramic Column Grid Array) solder joints after sinusoidal vibration loading, random vibration loading and thermal cycling tests are discussed; Jiao et al [17] Characterized the response of the board and solder interconnections and on this basis studied the failure modes and failure lifetimes in relation to the coupling conditions. Han et al [18] analyzed and optimized the sensitivity of the morphological parameters of CSP solder joints in three-dimensional packages under thermal-vibration coupling conditions; Sheng et al [19] studied the effect of different vibration directions on the damage mechanism of BGA under coupling conditions; Li et al [20] studied the physical model of probabilistic failure of BGA solder joints with multi-field coupling In addition to thermal vibration coupling of solder joints, Zhang et al [21] conducted a temperature-vibration coupling analysis and performance study of commercial 18650 Li-ion batteries; Zheng et al [22] studied the reliability of thermal vibration coupling of PLC optical splitters; Shi et al [23] presents a vibration analysis model for functional gradient conical-cylindrical coupled shells (FG-CCCS) subjected to thermal environments; He et al [24] Research through the air temperature-vibration coupling test system provides a solution for obtaining high-performance ATPCs; Fan et al [25] summarized the fatigue theory and the multi-field coupled numerical analysis theory, and on this basis, proposed a numerical analysis method for thermal vibration coupling of TSV copper (TSV-Cu). In summary, the relevant research on temperature-vibration synthesis is basically mature, and the physical effects and failure mechanisms of different products subjected to temperature-vibration are basically the same.…”