工业锅炉用洁净型煤SO2排放量试验研究

以低阶、优质神府煤为主要原料煤,添加5种不同固硫添加剂,研究出冷热强度满足要求的工业锅炉用洁净型煤,并进行了试验室固定床锅炉燃烧试验,结果表明,研制出的洁净型煤固硫效果非常好,其SO2排放量均达到北京市锅炉污染物综合排放标准(DB15/139-2002)规定的小于150mg/m3的要求。     

钝感推进剂配方研究及发展趋势

从钝感黏合剂、钝感增塑剂、钝感高能填料以及新型复合材料等方面综述了国内外钝感固体推进剂配方及钝感方法进展。结果表明,HTPE黏合剂、BDNPF/A增塑剂、FOX-7高能填料以及HMX-TATB核-壳微粒等均可有效降低推进剂感度。今后钝感推进剂的重点研究方向主要为推进剂钝感机理、钝感推进剂能量与感度关系、钝感材料的匹配技术以及影响感度的综合因素等。     

氟碳黏合剂研究进展

综述了国内外氟碳黏合剂研究进展,对主要品种的氟碳黏合剂的发展历程、性能、应用以及发展趋势作了简要评述。认为端羟基氟碳缩甲醛聚醚和含氟氧杂丁环聚醚是值得关注的高能量密度推进剂用黏合剂品种,其在特殊性能材料等民品领域也有较广阔的应用。     

低水泥用量自密实混凝土配合比设计试验研究

本文在现有的SCC设计思路的指导下。结合我国原材料和混凝土市场的特点,提出了低水泥用量SCC的解决方案。在保证混凝土具有自密实性能的基础上,以SCC硬化强度和经济成本为性能指标,采用大量添加粉煤灰掺合料置换和减少水泥用量的方法。进行了C60等级和C30等级SCC的配合比设计。按照所提出的配合比设计,低水泥用量SCC均能顺利达到扩展度试验、V型漏斗试验以及抗压强度试验的要求。为我国生产自密实性能优良、经济性合理的自密实混凝土提供了参考。     

外墙外保温干粉黏接剂粘结性能的研究

用正交试验法确定了外墙外保温干粉黏接剂中各种材料的最佳配合比.     

In vitro model to assess the adsorption of oral veterinary drugs to mycotoxin binders in a feed- and aflatoxin B1-containing buffered matrix

Mycotoxin binders are feed additives which are mixed in the feed to adsorb mycotoxins and thereby reducing their toxic effects on animals. Interactions with orally administered veterinary medicinal products, such as antimicrobials or coccidiostats, have been reported previously. This paper describes an in vitro model to screen the interaction between mycotoxin binders and veterinary drugs with respect to the non-specific binding of drugs. It is designed as a static setup using a single concentration of drug and binder in a feed-containing or a feed-plus-mycotoxin-containing matrix, buffered at different pH values. The model was applied to two frequently used antimicrobials in veterinary medicine, doxycycline (DOX) and tylosin (TYL), one major mycotoxin, aflatoxin B1 (AFB1), and four mycotoxin binders. Proportions of feed, DOX or TYL, AFB1, and binder are equivalent to the in vivo situation for broiler chickens, while pH and volume of the buffer are representative of the gastrointestinal tract of chickens. A substantial binding of DOX (~ 88%) and TYL (~ 66%) to the feed-matrix was observed. For the mycotoxin binders, similar results were obtained for DOX and TYL; more specifically up to an inclusion rate of 20 g binder/kg feed, no significant binding was demonstrated, determined as the free concentration of DOX and TYL. A single exception was noticed for TYL and one specific bentonite-based mycotoxin binder, for which no significant interaction could be demonstrated up to 10 g binder/kg but there was an effect at 20 g/kg. In all cases, there was no competition between the tested drugs DOX or TYL and the mycotoxin AFB1 for binding to the bentonite-based mycotoxin binder.     

改性丙烯酸树脂型高温电子浆料有机载体的制备

以改性丙烯酸树脂为粘合剂 ,配以多种助剂 ,得到一种性能优良的适用于丝网印刷的高温电子浆料有机载体 ,并已应用于实际生产中。     

机制盘香粘合剂研发

为配合专用盘香加工机的普及使用,研发了机制盘香粘合剂.对盘香加工设备进行了简要说明,对影响盘香性能的主要因素包括粘合剂配方、木粉和粘合剂比例、干粉和水的比例等进行了分析,得到了理想的配比和工艺参数.该粘合剂已经实现工业化生产.     

单颗粒生物质型煤燃烧影响因素研究

通过自行设计的实验台研究了生物质型煤的燃烧特性,实验结果表明:单颗粒生物质型煤的燃烧过程可以明显的分为挥发分燃烧和固定碳燃烧2个阶段。炉膛温度和成型压力对生物质型煤的燃烧特性均有影响,炉膛温度越高,生物质型煤燃烧失重率越大。在实验成型压力范围内,成型压力对生物质型煤燃烧速度没有明显影响。     

氟碳聚醚单体——1，1，5-三氢八氟戊基缩水甘油醚合成研究——特种聚氨酯预聚体端羟基氟碳聚醚研究Ⅲ

在合成氟碳聚醚单体1,1,5-三氢八氟戊基缩水甘油醚(FGE-2)的过程中,用气液色谱跟踪研究1,1,5-三氢八氟戊醇(FOH-2)与环氧氯丙烷(ECH)在 NaOH存在下的缩合反应进程,发现该反应是一个可逆反应;反应温度较低(30℃)时反应速度太慢,反应温度过高(80℃)时平衡逆向移动,较适合的反应温度为50℃.当反应物摩尔比为: FOH-2/ECH/NaOH=1/3/1～1.2时,在无水介质中,采用FOH-2后加法,反应4～5h即达平衡;若NaOH过量5%～20%,转化率达90%以上,产率可达82%.采用ECH后加法,也得到良好结果.反应物经减压精密分馏,分离回收ECH和FOH-2后,收集在266.6Pa真空度下b.p. 68℃的馏分,得到FGE-2产品,环氧值为0.3440～0.3471mol/100g,纯度达99%以上.