含微细颗粒的挥发性有机废气综合治理技术研究开发

工业的发展，带来了很多丰闷关的环境污染问题。挥发性有机物（VOcs）是常见的污染物，对环境、动植物的生长及人类健康造成了极大的危害，因此越来越受到世界各国的重视，许多发达国家都颁布了相应的法令，限制VOCs的排放。含微细颗粒的挥发性有机废气由于多种物质成份并存，特别是橡胶行业炼胶废气一直是环保治理的难点。我们提出采用“预处理除油装置＋活性炭流动床吸附＋布袋除尘器＋活性炭固定床吸附装置”的处理方式，能有效治理这类废气，尤其是针对橡胶行业炼胶废气，具有处理效率高、运行稳定、运行费用低、操作简便等特点。     

Site occupancy and enhanced luminescence of broadband NIR gallogermanate phosphors by energy transfer

Super broadband near-infrared (NIR) La₃Ga₅GeO₁₄(LGGO): Cr³⁺ phosphor is in urgent needs for food testing. Unfortunately, it suffers from poor luminescence intensity in applications. Herein, the enhanced NIR luminescence performance can be realized in LGGO: Pr³⁺, Cr³⁺. The preferential crystallographic site of Cr³⁺ is validated on the basis of EPR spectrum, Rietveld refinement, and the first-principles DFT calculations. It is of great importance that the as-prepared phosphors can be excited by blue light (460 nm), which is beneficial to the application of blue-pumped LEDs. The critical distance of Pr³⁺ in LGGO host has been calculated by concentration-quenching method. For co-doped sample, it is observed that Cr³⁺ luminescence intensity enhancement by a factor of 3 can be achieved by doping Pr³⁺ owing to the energy transfer from Pr³⁺ to Cr³⁺. In addition, the introduction of Pr³⁺ can also improve the Cr³⁺ luminescence intensity at elevated temperature. Furthermore, using the optimized phosphor, a blue-based NIR phosphor-converted LEDs (NIR pc- LEDs) is fabricated, the forward voltage and the intensity of LED hardly change after thermal aging for 500 hours under high temperature/ high humidity condition, indicating its great reliability for NIR pc-LEDs. Therefore, LGGO:Pr³⁺, Cr³⁺ has great potential to serve as an attractive candidate in the application of blue light-excited NIR pc-LEDs in view of its capability for blue to enhanced broadband NIR conversion.     

Effects of adhesive modulus and curing conditions on curing behavior of silicate based ceramic coatings on carbon fiber reinforced resin matrix composites

Sodium silicate based ceramic coatings were prepared on the surface of carbon fiber reinforced epoxy resin matrix composite. The coatings were obtained by curing the mixture of silicate adhesive, SiO₂ or Na₂SiF₆ as curing agent, and YSZ and Al₂O₃ as filler. The effects of adhesive modulus, curing agent, curing temperature and time on curing behavior of the coatings were investigated. The results indicated that the coating obtained from 2.7 modulus of silicate adhesive was dense, cohesiveness, uniform and continuous. As curing agent, SiO₂ could promote curing better than Na₂SiF₆, achieving complete curing of the coating. And the coating containing SiO₂ as curing agent was dense, flat and well adhered to the substrate. The curing behavior of coatings was significantly affected by curing temperature and time. The coatings could be cured completely with the increase of curing temperature. The best curing result was obtained at 100 °C curing temperature. Also the experimental results showed that the characteristics of coatings were improved to a certain extent by prolonging the curing time.     

光伏玻璃丝印背板常见问题及分析

光伏背板玻璃丝网印刷后能有效提高其反射率,从而提高光伏组件的发电功率.通过采用千分尺、百格刀、张力计检测,分析了光伏玻璃丝网印刷过程中产生的缺陷.发现玻璃整洁度和钢化炉温度对附着力有很大影响;网版感光胶厚度不均、网版张力小、刮刀压力大、油墨黏度小会有油墨层边缘缺陷;刮刀损伤、玻璃厚薄差大会有着墨不匀缺陷;油墨颗粒大、印刷台版不平、制网版时有灰尘、刮刀压力过小、玻璃弯曲度大、网版感光胶厚度薄会有针孔缺陷;丝印机定位故障、网版尺寸变化、玻璃对角线变化会出现印刷尺寸不合格的缺陷;刮刀压力大、网版上有针孔、网版版膜受损会有印版漏墨等缺陷;网距过高、刮刀压力大、洗网版时用力过大、玻璃破碎会影响网版的使用寿命.通过分析,丰富了光伏玻璃的丝网印刷知识,对企业的生产有一定的指导意义.     

高校普通学生棒垒球运动的实践探索

本文通过实践总结法、文献资料法、专家访谈法、学生问卷调查法对高校开设棒垒球的情况进行总结,并通过江苏省十七届运动会的慢投垒球第一次比赛,发现高校对此项运动颇感兴趣并投入很多;南京理工大学六年来的开课经验表明,高校应该尽快开设此课,并对开课所要注意的事项和必须的改变进行陈述,以供其他学校借鉴交流;指出课内外相结合是今后学校体育的发展方向。     

基于WE!NVIEW MT6070H的PLC压砖机控制系统的设计与实现

以传统耐火材料压砖机为研究对象,采用WE!NVIEW的MT6070H触摸屏作为上位机、三菱FX0N系列PLC作为下位机的控制方案,利用气动控制实现了对压砖机的自动控制。现场应用证明:该系统出砖的效率和控制精度提高,所需人员少,控制简单,可维护性强。