Results 11 to 20 of about 1,049,090 (169)
Gaoya dianqi, 2019 隔声材料是治理噪声环境污染的重要途径之一,采用双螺杆挤出法制备聚碳酸酯/纳米二氧化硅复合材料。测试了复合材料的储能模量、损耗因子和隔声性能。结果表明:随着纳米填料二氧化硅添加量的增加,复合材料的储能模量提高,损耗因子峰值逐渐降低,复合材料的玻璃化转变温度及阻尼温域均向高温方向移动,阻尼温域变宽;5 mm聚碳酸酯基体材料的计权隔声量为24.4 dB,加入纳米二氧化硅填料后复合材料隔声性能有明显改善,在纳米二氧化硅添加量为3 phr时,复合材料隔声性能达到最大,计权隔声量达到为27.5 dB ...
王广周 +6 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Bone restoration is often hindered by the spatiotemporal dysregulation of immune and regenerative signals. Conventional bio‐inert implants, providing only passive support, fail to modulate this microenvironment, leading to infections and poor healing.
Zhizhong Sun +8 more
wiley +1 more source
Dianci bileiqi, 2018 介绍了电力系统外绝缘复合伞套用有机硅与液体硅橡胶,针对液体硅橡胶复合外套材料的老化现象,分析了液体硅橡胶材料的老化机理及主要影响因素,阐述了复合外套材料的老化对换流站设备的影响。研究了液体硅橡胶复合外套老化修复策略,结合现场实例应用表明,液体硅橡胶复合外套材料的老化只要及时跟踪发现,选择高性能修复材料,采用合理化的工艺可进行换流站内现场修复,恢复复合外套性能,延长设备的使用寿命。高性能氟硅橡胶涂层材料是液体硅橡胶复合外套老化修复的可靠材料,重新赋予复合外套优异的憎水性和更强的耐老化性能。
韦晓星 +3 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Dielectric polymers commonly suffer from severe performance degradation above 150°C, hindering advanced power systems. Herein, we demonstrate a polyetherimide (PEI) nanocomposite that overcomes this by mimicking the gradient architecture of nacre and bamboo, incorporating a continuous vertical gradient of fluorinated boron nitride nanosheets ...
Jian Wang +8 more
wiley +1 more source
四川大学学报. 自然科学版, 2005 在材料研究领域中,具有电学性能的陶瓷/聚合物复合材料是一种新型的复合材料,其中具有高介电性能的0-3型陶瓷/聚合物复合材料,以其广泛的应用前景已经引起人们极大的关注.作者对近年来有关高介铁电复合材料的介电性研究进行了总结,介绍了具有高介电性能的铁电陶瓷/聚合物复合材料的介电理论模型、制备方法、介电性的影响因素、国内外的研究现状及应用,并展望了其未来的发展趋势.
陈惠玲, 肖定全
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Lung cancer is one of the most common and deadly malignancies worldwide. Although immune checkpoint inhibitors, including PD‐1/PD‐L1 blockers, have benefited a subset of patients, response rates remain limited, and recurrence is frequent because of the immunosuppressive tumor microenvironment (TME), characterized by hypoxia and dysregulated ...
Yi Ma +6 more
wiley +1 more source
四川大学学报. 自然科学版, 2005 为了改善纳米羟基磷灰石/胶原复合材料界面结合性能,采用戊二醛对复合材料进行交联处理,并对交联前后复合材料的溶胀度,结合能进行了分析,研究戊二醛交联对羟基磷灰石/胶原复合材料溶胀度的影响,探讨了戊二醛交联羟基磷灰石/胶原复合材料的可能机理 结果表明,复合材料的溶胀度随戊二醛的浓度增加而降低,当戊二醛的浓度大于0 25%时,复合材料的溶胀度没有明显的变化 戊二醛交联促使羟基磷灰石与胶原之间形成更多键,导致Q1s,Ca2p,N1s,P2p和C1s的化学状态和结合能变化 ...
林晓艳, 范红松, 张兴栋
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Achieving a simultaneous enhancement in both tribological and mechanical properties of self‐lubricating composites has long been a challenge. In this study, we designed the composition based on first‐principles calculation and fabricated a copper‐based self‐lubricating composite with excellent tribological and mechanical properties via spark ...
Zhongbo Wang +4 more
wiley +1 more source
四川大学学报. 自然科学版, 2002 作者通过溶液法制备了纳米磷灰石晶体 /聚酰胺 6 6复合材料 ,用燃烧法测试了纳米磷灰石晶体在复合材料中的含量及其均一性 ,并用红外和拉曼光谱及X 射线衍射对复合材料的界面进行了初步研究 .结果表明 ,纳米磷灰石晶体在复合材料中呈均匀分布 ...
郭颖, 李玉宝, 严永刚
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
wiley +1 more source