地铁站台用缓冲防滑垫的研制

介绍地铁站台用缓冲防滑垫的研制.缓冲防滑垫由金属骨架和橡胶组成,橡胶部分为梳齿状结构.金属材料采用Q235-A或不锈钢材料0Cr18Ni9.橡胶部分主体材料采用EPDM,以硫化剂DCP为主硫化剂并配以少量硫黄,阻燃体系为氢氧化铝/硼酸锌并用体系.本设计缓冲防滑垫安装方便、成本较低,可显著提高乘车安全性.     

镂空网格型PVC防滑垫防滑性能研究

基于国际、国家、行业均未对塑料防滑垫防滑性能的测试方法及防滑等级进行有效规定的现状,采用倾斜平台法、摆锤法、水平牵引法对30批次镂空网格型聚氯乙烯(PVC)防滑垫进行了测试及防滑等级划分。结果表明,水平牵引法是其中最优的方法,防滑垫的固定方式、质量、面密度是主要影响因素,表面防滑结构、硬度等物理特征是次要影响因素。该类产品使用面积越大安全性能越好,建议面密度、动态阻滑因数分别大于等于3.0 kg/m~2及0.60。     

多功能新型防滑垫的研制

本研制多功能新型防滑垫表面有起防滑、按摩作用的乳状突起物，底面有若干个支撑筋和防滑吸盘，集防滑、隔凉、健身作用于一体     

镂空网格型PVC防滑垫有害物质限量研究

基于国际、国家、行业均未对镂空网格型聚氯乙烯(PVC)防滑垫产品有害物质进行区分及限量的现状,参考相关国家/行业标准对30批次该类产品中氯乙烯单体、重金属、可溶性重金属、邻苯二甲酸酯含量以及有害物质迁移相关数据进行测定及对比分析.结果表明,邻苯二甲酸酯为其中最值得关注的有害物质,其主要成分邻苯二甲酸二(2-乙基己)酯(...     

石油测井用插头电缆产品研制

根据插头电缆产品工况及使用条件,从配方设计、模具设计、产品试制等方面,阐述了插头电缆产品的研制过程,分析了研制过程中出现的问题,并提出了相应的改进措施.结果表明,所研制的插头电缆产品工艺过程可行,符合用户要求.     

防滑垫对汽车内饰涂料性能的影响

针对汽车内饰仪表板不同装饰漆体系、不同漆膜厚度及不同PP基材,分析讨论了PVC防滑垫中增塑剂对汽车内饰仪表板PP基材用装饰漆漆膜的影响。实验结果表明,选择含底漆的双层涂料体系、增加漆膜厚度或使用不耐UV级别的PP基材均可以提高汽车内饰件用装饰漆耐防滑垫性能。     

杀灭乙肝病毒餐具洗洁精的研制

论述了餐具洗洁精配方的原料确定、杀灭乙肝病毒成分的优选及产品研制，进行了稳定性效果检测等。并对碘与醋酸洗必泰络合成碘伏的方法及其杀灭乙肝病毒的效果进行了实验比较。研制了杀灭乙肝病毒效果好、对环境稳定的高效杀灭乙肝病毒餐具洗洁精。     

夹布IC防尘罩产品研制

从产品性能分析、材料选取及配方设计、模具设计和工装设计到产品试制,阐述了夹布IC防尘罩产品的研制过程,并分析了研制过程中所出现的问题,作出了相应改进措施。结果表明,夹布IC防尘罩产品工艺过程可行,研制产品符合用户要求。     

接枝聚醚及模塑高负荷聚氨酯泡沫塑料通过小试鉴定

一九八五年八月二十四日,沈阳市科委和化工局共同组织通过了沈阳市石油化工设计研究院研制的接枝聚醚及模塑高负荷聚氨酯泡沫塑料小试技术鉴定。与会代表给予了充分的肯定和较高的评价。并认为: 1.接枝聚醚,原料立足于国内、易得,工艺路线合理、可行,产品稳定性好,易于加工制造聚氨酯泡沫塑料制品。 2.工艺过程简单,无“三废”,产品无毒。     

橡胶浴室防滑垫出口英国

1990年5月,哈尔滨北方橡胶厂、哈尔滨市化工局、哈尔滨轻工业品进出口公司一起同英国某公司就出口橡胶浴室防滑垫进行了洽谈,签订了出口三种不同颜色橡胶浴室防滑垫的协议。具体要求为:水兰色、水粉     

高效液相色谱法检测非洛地平缓释片中的氧化产物

建立了非洛地平缓释片中氧化产物的高效液相色谱检测法。色谱条件：C18色谱柱（150 mm×4.6 mm,5μm）,流动相为pH值3.0的乙腈-甲醇-磷酸盐缓冲溶液（2∶1∶2）,检测波长254 nm,流速1.5 mL.min-1,检测浓度3μg.mL-1,进样量20μL。氧化产物浓度在0.1525～6.100μg.mL-1的范围内与峰面积线性关系良好,检测限为0.61 ng,定量限为1.83 ng;重复性实验相对标准偏差（RSD）均小于1%;平均回收率为98.43%。该方法重复性好、稳定性高,适合非洛地平缓释片中氧化产物的测定。     

Industrial wastewater desalination using electrodialysis: evaluation and plant design

Industrial processes usually generate streams enriched with high organic and inorganic components. Due to the complexity of these streams sometimes it is not quite straightforward to predict the performance of desalination technologies. Some technologies are available for the selective removal of salts from aqueous stream, but in general these technologies are applied in high value applications where salts are either the product or limit further purification of the final product is required. These technologies are, however, not widely used in low value applications like wastewater treatment. The aim of this article is to review, improve and perform the design of electrodialysis processes for relevant industrial wastewater applications. It is focused on the determination of the critical design parameters like membrane resistance, current efficiency and limiting current density through lab scale experiments and its further use for industrial scale first approximation design. In this article, the basic equations for design are reviewed and a practical approach to obtain the number of stacks required for a certain separation is introduced. An industrial wastewater stream has been used for lab batch experiment and its following continuous plant design. The results show that it is possible to separate monovalent ions in a high rate (more than 70 %) and divalent ions were less separated (less than 50 %). The energy required for the particular case was evaluated in a range from 6 to 11 kWh/m³ of feed stream depending on the water reclamation rate.     

Diffusive transport with consecutive catalytic wall reactions

A new complete solution is obtained for the plug flow reactor with consecutive catalytic wall reactions at low Peclet number flow. The significant effects of the Peclet number and the wall reaction kinetics on the concentration field, the Sherwood number, the yield of the intermediate product and the optimal reactor length are established. A useful graph for the design purpose is presented for the determination of the optimal yield of the intermediate product B and the reactor length for Pe = 1.     

推拉杆用外嵌骨架橡胶密封圈

介绍了推拉杆用外嵌骨架橡胶密封圈的配方、产品构型、模具设计、生产工艺及产品性能。采用外嵌骨架材料,可使产品易于装机,受力时底部不易翻转变形。产品具有较强的耐老化性能。     

硫酸水解-高效液相色谱法定量测定低聚木糖

建立了一种基于硫酸水解-高效液相色谱法测定低聚木糖产品中低聚木糖含量的简捷方法。经过优化实验,硫酸水解的条件:硫酸质量分数6.0%、反应温度100℃、反应时间60 min;高效液相色谱测定的条件:色谱柱Bio-Rad Aminex HPX-87H、流动相5 mmol/L H₂SO₄、洗脱流速0.6 mL/min、柱温55℃,采用外标法和峰面积积分法测得样品中低聚木糖质量分数为39.94%,重复性好,标准差为0.36%。     

退镀铜溶液中铜的测定

采用原子吸收分光光谱法建立了测定退镀铜溶液中铜的分析方法。分析了共存物质和高氯酸对铜测定的影响,进行了精密度分析及样品合成等试验。结果表明,共存物质硫酸对测定无影响,铬酸酐质量浓度超过40 g/L对测定有负干扰,加入高氯酸可消除影响。高氯酸可加热冒烟消除。该方法的相对偏差小于1.00%(n=5),此分析方法的精密度好、准确度高。     

煤制烯烃项目20 kt/a硫磺回收装置运行分析

介绍了神华包头煤制烯烃项目20 kt/a硫磺回收装置工艺流程,对该装置72 h考核标定的工艺运行数据进行了计算和分析。硫磺回收装置72 h标定考核表明,该装置满负荷运行工况良好,关键操作参数与设计值基本一致,设备运行正常;对标定结果体现出来的问题,采取了相应措施,为装置平稳运行奠定了基础。     

REACTIVE MIXING IN TURBULENT GASES

Conversion of the ozone-nitric oxide reaction was measured along a non-premixed flow reactor. Conversion was less than the homogeneous limit with a single jet mixer, allowing determination of the mean product of the reactant concentration fluctuations. The liquid decay law was measured with a very rapid reaction and was found, within experimental error, to be equal to the normalized mean product of the reactant concentration fluctuation in the reacting gas. The results imply that the mixing decay law can be taken as the same for gases and liquids, and that the reactive-mixing model developed for liquids also applies to gases. Thus the design procedure developed for liquids may also be used in gases. In addition, since the mixing decay law is easily measured in liquids, a gas phase reactor may be conveniently designed by measuring d in a pilot scale reactor with a very rapid liquid phase reaction.     

REACTIVE MIXING IN TURBULENT GASES

Conversion of the ozone-nitric oxide reaction was measured along a non-premixed flow reactor. Conversion was less than the homogeneous limit with a single jet mixer, allowing determination of the mean product of the reactant concentration fluctuations. The liquid decay law was measured with a very rapid reaction and was found, within experimental error, to be equal to the normalized mean product of the reactant concentration fluctuation in the reacting gas. The results imply that the mixing decay law can be taken as the same for gases and liquids, and that the reactive-mixing model developed for liquids also applies to gases. Thus the design procedure developed for liquids may also be used in gases. In addition, since the mixing decay law is easily measured in liquids, a gas phase reactor may be conveniently designed by measuring d in a pilot scale reactor with a very rapid liquid phase reaction.     

耳塞盖点浇口注塑模设计

通过对典型电子数码类产品耳塞盖的结构与成型工艺问题分析,确定了其注塑模具的整体设计方案。为了适应产品批量大、外观质量要求高的特点,确立了一模八腔的点浇口三板式注塑模具结构形式,重点介绍了分型面的设计、浇口形式与位置的确定、型腔数量及排布、产品顶出方式、模具型芯与镶件设计等内容,介绍了耳塞盖注塑模具的结构及其工作原理。采用此模具结构不仅满足了产品批量及外观质量要求,而且实现了从注射到开模顶出过程的自动化生产,塑料件与凝料实现自动分离。经生产实践结果表明,模具结构紧凑、运动平稳可靠,设计方案合理,生产效率高,取得了较好的经济效益。