1 250 mm五机架六辊冷连轧工艺控制系统核心技术

简要介绍了自主设计制造、具有完全自主知识产权的1 250 mm五机架六辊冷连轧产线工艺及设备特点。重点阐述了冷连轧工艺控制系统的硬件配置、软件架构及核心技术。采用基于简易有限元的轧制力模型及基于成本函数的多目标负荷分配模型，实现了高精度的轧制规程计算。开发了原料板快速启车技术与板形多变量综合最优控制技术，实现了冷轧产品的尺寸精准控制。现场实际应用效果表明，机组稳定运行率达到99.8%以上，不同规格的产品厚度控制精度均达到±0.8%以内，板形控制精度均达到5I以内。     

助卷辊电液伺服系统相关辨识法研究

用相关辨识法分析了卷取机助卷辊电液伺服系统的频率特性 ,采用 Levy法求出系统的传递函数 ,并且给出该系统频率特性相关参数。     

四异丁氧基镍酞菁的合成及其溶剂效应

4 异丁氧基邻苯二腈与氯化镍在强有机碱 1 ,8 二氮杂双环 (5 ,4,0 )十一碳烯 7催化下反应 ,合成了四异丁氧基镍酞菁 ,产物经FT -IR、元素分析、UV -Vis吸收光谱和1 H NMR表征了结构 ;并研究了其溶剂效应 ,结果表明 :最大吸收峰波数ν与函数 f(n ,ε)存在一定的线性关系 ,线性相关系数为 0 940 2 ,而Bayliss函数项 (n2 - 1 ) /(2n2 +1 )决定了最大吸收波长 (λmax)的位移变化 ;化合物的λmax在不同溶剂中随聚集程度增加 ,发生一定程度的蓝移     

高掺量粉煤灰路面试验研究获得成功

据悉，“十一五”期间六盘水市的煤产量将达到4000万t／年，火电装机容量为1000万KW，粉煤灰排放量将逐步增到1000万t左右。为提高粉煤灰的综合利用率，拟将粉煤灰混凝土用于公路路面工程。     

用加权余量法计算球形催化剂的有效因子

本文利用加权余量法计算了等温球形催化剂的有效因子,并对催化反应n=1,2的两种情况与其它简化法进行了比较.文中取Dirac函数作为权函数,形式简单,在袖珍计算器上就能完成计算.其结果:当n=1时,与解析解非常接近;当n=2时,优于其它三种简化解法,很接近数值解.     

Cooperative effect of crystallization temperature and NaF addition in the formation process and hydrothermal stability of MCM-48 mesoporous molecular sieve

The hydrothermal stability of MCM-48 was conveniently and effectively improved by increasing the crystallization temperature and directly adding NaF to the synthesis gel. The crystallization temperature varied from 373 K to 403 K. The influences of NaF addition, crystallization temperature and crystallization time on the formation process and hydrothermal stability of MCM-48 were systematically studied here to solve the problem of poor reproducibility. Results from XRD patterns indicated that the crystallization temperature and crystallization time were very critical factors for the improvement of the hydrothermal stability besides NaF addition. The formation process of MCM-48 was significantly accelerated and the pore structure ordering was also greatly improved by increasing the crystallization temperature and F⁻/Si ratio. A high hydrothermally stable MCM-48 mesoporous molecular sieve was obtained after being crystallized at 393 K for 36 h in the presence of NaF, which endured the hydrothermal treatment in boiling water at least for 4 days. However, only an amorphous product was obtained when the crystallization temperature was further increased to 403 K. Results from Si MAS NMR, N₂ adsorption isotherms, TEM, Raman spectra and XRD patterns manifested that the improved stability of MCM-48 was attributed to the high silicates condensation degree and the excellent pore structure ordering. The possible reason for the successful formation of hydrothermally stable MCM-48 sample by controlling the crystallization temperature, time and F⁻/Si ratio was explained here.     

Irganox(R) HP-136的抗氧化机理及对聚丙烯加工稳定性的影响

介绍了Irganox(R) HP-136在PP加工中的作用,表明它能有效地捕获烷基自由基,与传统的受阻酚类及亚磷酸酯类抗氧剂复配与传统的二元抗氧稳定体系相比,具有添加量少、抗氧性能优等优点.比较了Irganox(R) HP-136(3-芳基-苯并呋喃酮)与传统抗氧剂的抗氧机理,并分析了在聚合物稳定体系中的作用.     

Cu2O-CuAlO2-Cu基金属陶瓷导电性能研究

通过热压技术制备Cu2O-10CuAlO2-xCu金属陶瓷材料，并对其导电性能进行了研究。结果表明，Cu2O-10CuAlO2-xCu在Cu含量超过15wt．％后呈金属导电性。材料的微观结构观察及物理性能测试表明，金属陶瓷材料的电导率不仅取决于材料的金属相含量，还取决于金属相颗粒尺寸和孔隙率的大小。材料中金属相的颗粒尺寸取决于热压工艺参数，随着热压温度的升高而增大，但随热压压力的升高而减小。     

一水合硫酸氢钠催化β-萘甲醚的合成

利用一水合硫酸氢钠催化合成 β 萘甲醚 ,3 6 gβ 萘酚 ,3ml甲醇 ,1 5g一水合硫酸氢钠 ,80℃反应5h ,HPLC分析产率达 78 3%。固体催化剂容易过滤分离。