自控温发热高分子复合材料研究进展

简要介绍了高分子基自控温发热复合材料的自控温发热机理和主要特性参数(如PTC强度、自控系数等),并对影响自控温发热材料性能的因素及该材料应用进行了综述。

自控温材料在机车空气管路系统的应用

针对机车空气管路系统在冬天易冻结的现象,采用加热的方法来避免空气管路系统结冰,同时通过分析、计算及试验验证,证明采用自控温材料能够达到机车空气管路系统防寒要求。

自控温发热高分子复合材料的研究

自控温伴热电缆指的是由具有正温度系数(PTC)电阻率特性的高聚物导电复合材料制成的带状电伴热器。本文从产品技术参数及试验内容对自控温电缆进行了研究。

自控温发热高分子复合材料的开发应用

对高分子基质控温发热复合材料的自控温发热机理以及PTC强度、自控系数等主要特性参数进行阐述,此外对自控温发热材料性能产生影响的因素以及这一材料的应用进行了介绍。

RFT自控相变储能节能保温材料施工工艺研究

结合工程实例,阐述了RFT自控相变储能节能保温材料的工艺原理及工艺特点,并详细介绍了其施工工艺流程及技术要点,通过采用RFT自控相变储能节能材料施工,显示了优异的节能效果,达到了规范要求。

The effect of the carbon components on the performance of carbonbased transition metal electrocatalysts for the hydrogen evolution reaction

The hydrogen evolution reaction(HER)is a promising way to produce hydrogen,and the use of non-precious metals with an excellent electrochemical performance is vital for this.Carbon-based transition metal catalysts have high activity and stability,which are important in reducing the cost of hydrogen production and promoting the development of the hydrogen production industry.However,there is a lack of discussion regarding the effect of carbon components on the performance of these electrocatalysts.This review of the literature discusses the choice of the carbon components in these catalysts and their impact on catalytic performance,including electronic structure control by heteroatom doping,morphology adjustment,and the influence of self-supporting materials.It not only analyzes the progress in HER,but also provides guidance for synthesizing high-performance carbon-based transition metal catalysts.

热加工对TB3合金显微组织与性能的影响

航天航空用紧固件材料TB3合金是一种亚稳定 β钛合金。本文对比了两种热加工工艺对该合金的显微组织与性能的影响。采用锻造加后续热轧工艺改进了TB3合金的塑性 ,使伸长率提高到 2 2 % ,断面收缩率提高了 1 0 %。同时 ,该工艺还细化了晶粒。