Results 11 to 20 of about 42,962 (142)
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
, 2015 本发明提供了一种聚硫醚基化合物，其侧链结构中含有大量巯基，形成聚硫醚基聚硫醇。本发明还提供了一种合成该聚硫醚基聚硫醇的方法，首先采用巯基-炔加成聚合反应得到聚硫醚，然后经过酸式水解而得到，该方法快速高效、工艺简便、收率高。该聚硫醚基聚硫醇分子链中的巯基能够与铜形成硫铜键，同时硫醇键通过自缩合能够形成致密的厚膜涂层，因此该聚硫醚基聚硫醇可作为铜缓蚀剂，其在铜表面形成的缓释膜具有附着力强、致密性高、厚度高的优点，满足了目前对铜缓蚀膜的性能要求 ...
王刚 +4 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Diabetic wound infections are a common complication of diabetes, which severely impact patients' quality of life. Effective treatment of diabetic wound infections remains one major challenge in the clinic, partially due to the formation of bacterial biofilm and antibiotic resistance.
Liang Zhou +8 more
wiley +1 more source
, 2011 本发明涉及气体分离复合膜，具体地说是一种聚醚-b-聚酰胺多层复合膜及其制备方法。于多孔支撑底膜依次涂覆聚二甲基硅氧烷层、聚醚-b-聚酰胺层、聚二甲基硅氧烷层构成；该复合膜具有多层结构，每层都有特有的功能，其功能为多孔支撑底膜层/PDMS中间层/PEBA分离层/PDMS堵孔保护层。本发明制备的聚醚-b-聚酰胺多层复合膜具有超薄的分离层，具有极高的气体渗透性，并对CO2/N2，SO2/N2，H2S/N2，CO2/H2等分离体系保持较高的分离性能，适用于CO2，H2S，SO2等酸性气体脱除的领域 ...
李晖, 任晓灵, 邓麦村, 任吉中
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
wiley +1 more source
, 2016 本发明提供了一种聚硫醚聚硫醇，其侧链结构中含有大量硫代乙酸酯，巯基受乙酰基保护，使得聚硫醇相当稳定，形成潜伏型聚硫醚基聚硫醇，便于存储。在叔胺催化剂条件下，该潜伏型聚硫醚基聚硫醇在室温下可快速发生乙酰基转移反应，露出大量巯基，从而能够与铜形成硫铜键，同时分子链中的硫醇键通过自缩合能够吸附于铜材上并交联沉积形成缓蚀膜涂层，因此能够作为铜缓蚀剂使用 ...
乌学东 +4 more
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, 2010 本发明公开了一种聚硫醚砜酰亚胺三元共聚物，本发明还公开了该三元共聚物的制备方法，其特征在于将硫磺、双取代酞酰亚胺、双取代砜、还原剂、反应助剂加入装有溶剂的反应器内，加热反应一定时间后将反应液倒入沉淀剂中搅拌，过滤，将滤饼除盐和残余溶剂即可得聚硫醚砜酰亚胺三元共聚物。与现有技术相比，本发明的优点在于：所得产物具有良好热稳定性(如流动性、机械性能和耐热性)、较低的熔融粘度、较宽的加工窗口和优良的加工性能；同时，由于含硫砜结构的引入 ...
方省众, 丁孟贤, 严庆, 胡本林
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, 2009 本发明提供了异构聚硫醚酰亚胺及其制备方法。采用氯代苯酐混合异构体为原料，与单取代的胺反应生产N-取代-3-氯代邻苯二甲酰亚胺和N-取代-4-氯代邻苯二甲酰亚胺的异构体，后者和碱金属硫化物在非质子极性溶剂中反应生成不同比例的N，N′-二取代的硫醚四酰亚胺异构体，将此四酰亚胺水解、酸化得到不同比例的硫醚型四酸异构体，脱水后得到不同比例的硫醚型四酸二酐异构体。这些二酐异构体可以与有机二胺聚合反应生成相应的异构聚硫醚酰亚胺树脂，该树脂具有很好的耐热性能、机械性能和熔融加工性能等优异综合性能 ...
韩 英 +6 more
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