摘要：以锆鞣剂为交联剂,选用填充剂及柔软剂对超细纤维合成革基布进行交联改性。以基布的吸湿性、透水气性、柔软度及机械性能作为评价指标,通过正交试验,对填充剂及柔软剂的种类、用量及复配工艺进行优化。试验表明:用1%德赛坦RST、5%铝单宁、5%BA栲胶、10%德赛宝SO、10%INGRASSANTE M65、5%合成牛蹄油改性后的基布性能最佳。与空白基布相比,改性基布的吸湿性提高71.11%,透水气性提高10.05%,且机械性能及增厚增重率明显提高。采用电镜分析(SEM)、原子力显微镜分析(AFM)、接触角及比表面积对改性前后基布进行了表征。结果显示,基布纤维排列松散,表面结构变化明显,润湿性增加,比表面积增大。

摘要：为打破PLC实验室建设的各项限制,提升PLC课程教学效果,拓宽PLC实验教学内容,提高学生的实践动手能力和创新能力,将Multisim仿真技术应用到PLC教学中。利用Multisim开发虚实结合的PLC实验教学平台,并在此基础上构建了虚实结合的创新型教学体系,探索了Multisim在PLC教学中的应用。教学平台的开发与实施得到了学生的好评,为PLC的实验教学开辟了一种新的路径。

摘要：Simultaneous generation of H_(2) fuel and value-added chemicals has attracted increasing attention since the photogenerated electrons and holes can be both employed to convert solar light into chemical ***,for realizing UV-visible-NIR light driven dehydrogenation of benzyl alcohol(BA)into benzaldehydes(BAD)and H_(2),a novel localized surface plasmon resonance(LSPR)enhanced S-scheme heterojunction was designed by combining noble-metal-free plasmon MoO_(3-x) as oxidation semiconductor and Zn_(0.1)Cd_(0.9)S as reduction *** photoredox system of Zn_(0.1)Cd_(0.9)S/MoO_(3-x) displayed an unconventional reaction model,in which the BA served as both electron donor and *** S-scheme charge transfer mechanism induced by the formed internal electric field enhanced the redox ability of charge carriers thermodynamically and boosted charge separation ***,due to the LSPR effect of MoO_(3-x) nanosheets,Zn_(0.1)Cd_(0.9)S/MoO_(3-x) photocatalysts exhibited strong absorption in the region of full solar ***,the Zn_(0.1)Cd_(0.9)S/MoO_(3-x) composite generated H_(2) and BAD simultaneously via selective oxidation of BA with high production(34.38 and 33.83 mmol×g^(–1) for H_(2) and BAD,respectively)upon full solar *** under NIR light irradiation,the H_(2) production rate could up to 94.5 mmol×g^(–1)×h^(–1).In addition,the Zn_(0.1)Cd_(0.9)S/MoO_(3-x) composite displayed effective photocatalytic H_(2) evolution rate up to 149.2 mmol×g^(–1)×h^(–1) from water,which was approximate 6 times that of pure Zn_(0.1)Cd_(0.9)*** work provides a reference for rational design of plasmonic S-scheme heterojunction photocatalysts for coproduction of high-value chemicals and solar fuel production.

摘要：为应对城市扩张和热源紧缺带来的集中供热热力站供热能力不足问题,以某热力站为研究对象,对比分析蒸汽压缩式热泵和吸收式热泵在提升热网供热能力中的效果。基于TRNSYS软件建立了两种热泵补热系统的仿真模型,利用双层协同优化方法,以经济性最优为目标,对系统的设计方案与运行策略进行协同优化,并从运行能耗、经济性、新增设备占地面积和地域适用性的角度对系统应用效果进行了对比分析。结果表明,在同一补热量下,蒸汽压缩式热泵补热系统一个供暖季的运行能耗比吸收式热泵补热系统高0.85%;蒸汽压缩式热泵补热系统的初投资较吸收式热泵补热系统约低100万元,但两者运行费用接近,总体上蒸汽压缩式热泵补热系统更具经济优势;蒸汽压缩式热泵补热系统中新增设备的占地面积比吸收式热泵补热系统小约30%;相比于寒冷地区,在热价更低的严寒地区采用吸收式热泵补热系统的经济性更优。因此,实际工程中应综合考虑地域条件、能源价格、场地空间等因素来制定热力站补热方案。