Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 47
·18025-18032
·
IF 8.067
Shu-Yan Wang,Xiao-Juan Zhen,Zhan-Zu Feng,Ming-Jun Xiao,Shi-Ji Li,Wen Shang,Yi-Fan Huang,Qiang Wang,Hao-Li Zhang
Space exploration urgently demands novel irradiation-tolerant materials to build the arsenal for outer space use, among which nonlinear optical materials and devices are ever-increasing attractive. Tin sulfide (SnS), a novel two dimensional (2D) BP-analog with enhanced stability under ambient conditions, has exhibited excellent optoelectronic properties on the ground, but its potential as a candidate for space optics remains to be explored. Herein, the spatial adaptability of SnS was evaluated in the simulated space radiation environment. When exposed to 60Co γ-rays at a dose equal to over 45 year accumulation in a typical earth orbit, SnS still maintained its strong third-order nonlinear saturable absorption ranging from visible to near-infrared spectra. Ultrafast spectroscopy is used to study the radiation effects and relevant damage mechanisms that are difficult to be revealed via conventional techniques. This work not only sheds light on the irradiation-induced ionization damage and defects in SnS from the unique perspective of ultrafast excited state dynamics but also provides general guidance for rational design and screening space radiation-tolerant nonlinear optical materials.
研究领域:
材料科学
·
光学
·
空间科学
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2025
·
IF 14.1
Zihao Zhao,Daili Feng,Xinxin Zhang,Yanhui Feng
Integrating phase change materials (PCM) into thermal insulation materials offers a novel approach to aerospace thermal protection. Herein, we used waste biomass as a template; by selecting the appropriate carbonization temperature, we obtained carbon aerogels (CCA) with extremely high porosity (95.8%) and high pore volume. After encapsulating PEG2000, we achieved high enthalpy (137.79 J g −1 , 91% of pure PEG2000) and low thermal conductivity (0.137 W (m·K) −1 , 45% of pure PEG2000). Thanks to the rich hierarchical nano-micro porous structure of CCA and the high latent heat of PEG2000, CCA/PEG exhibits excellent thermal insulation properties (under a heating temperature of 131 °C, the material takes 1400 s to reach its maximum temperature and can be maintained below 65 °C) and cycle performance. Additionally, irradiation destroyed the structure of CCA/PEG, leading to the degradation of PEG and the formation of other carbonyl-containing compounds, which decreased its latent heat (4.2%) and thermal conductivity (16.1%). However, the irradiation-resistant CCA, acting as a protective layer, minimizes the impact of irradiation on PEG2000. Instead, irradiation enhances the hierarchical porous structure of the material, ultimately improving its thermal insulation performance. CCA/PEG has potential application prospects in thermal protection and aerospace and is a strong competitor for high-efficiency thermal insulation materials.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 26
·2101143
·
IF 18.808
Shuang Xia,Yukun Chen,Jinfeng Tian,Jinfeng Shi,Chengzhen Geng,Huawei Zou,Mei Liang,Zhibo Li
Gecko-inspired microfibrillar adhesives have achieved great progress in microstructure design and adhesion improvement over the past two decades. Space applications nowadays show great interest in this material for the characteristics of reversible adhesion and universal van der Waals interactions. However, the impact of harsh environment of space on the performance of microfibrillar adhesives, especially the extreme low temperature, is rarely addressed. Herein, microfibrillar adhesives fabricated by phenyl containing polydimethylsiloxane (p-PDMS) elastomers with superior low-temperature reversible adhesion is proposed. p-PDMS elastomers are synthesized through one-pot anionic ring-opening copolymerization, and the resulting elastomers become non-crystallizable with excellent low-temperature elasticity. Low-temperature adhesion tests demonstrate that the adhesion strength of microfibrillar adhesives fabricated by p-PDMS elastomers can be well maintained to as low as −120 °C. In contrast, the adhesion strength of pure PDMS microfibrillar adhesive reduces more than 50% below its crystallization temperature. The low-temperature cyclic adhesion tests further demonstrate that p-PDMS microfibrillar adhesives exhibit superior reversible adhesion compared to that of PDMS microfibrillar adhesives, owing to the sustainable conformal contact and even distribution of loads over repeated cycles. This study provides a new fabrication strategy for microfibrillar adhesives, and is beneficial for the practical application of microfibrillar adhesives.
研究领域:
高分子材料学
·
仿生工程
·
低温物理学
·
航天器材料
·
界面科学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 4
·1741-1750
·
IF 1.754
Xian Li,Wang Kaikai,Huang Yin,Liu Peidong,An Heng,Yang Shengsheng,Chang Shuquan,Zhang Haiqian
In order to meet the needs of spacecraft for high-performance materials, polyimide (PI)/carbon nanotubes (CNTs) composite films were prepared and their performance changes under the coupling effect of electron beam irradiation/tensile stress were studied. The results showed that the PI/CNTs composite films had excellent mechanical properties and radiation resistance, and can be used as a promising candidate material for space applications.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）