3+8 13X0.20ST钢丝帘线在高负荷全钢载重

介绍3+8 13×0.20ST钢丝帘线在12R22.5高负荷全钢载重子午线真空胎胎体中的应用。与0.25 6 12×0.225HT钢丝帘线相比,3 8 13×0.20ST钢丝帘线破断力大,直径和线密度相差不大,在破断力/直径和破断力/线密度方面具有优势,以其替代0.25 6 12×0.225HT钢丝帘线用于12R22.5高负荷无内胎全钢载重轮胎胎体,成品轮胎的外缘尺寸基本不变,强度性能、耐久性能、胎圈耐久性能和速度性能均有所提高,安全性能有所提高,胎体的成本有大幅下降,同时有效解决了苛刻使用条件下轮胎不耐磨、肩脱层等问题,     

3+9+15×0.20ST钢丝帘线在高负荷全钢载重子午线轮胎胎体中的应用

介绍3+9+15×0.20ST钢丝帘线在12.00R20高负荷全钢载重子午线轮胎胎体中的应用。与3+9+15×0.225HT钢丝帘线相比,3+9+15×0.20ST钢丝帘线直径和线密度小,在破断力/直径与破断力/线密度方面有优势,以其替代3+9+15×0.225HT钢丝帘线用于12.00R20高负荷全钢载重子午线轮胎胎体,成品轮胎的外缘尺寸基本不变,强度性能、耐久性能、胎圈耐久性能和高速性能均有所提高,安全性能略有提高,胎体成本大幅下降,同时有效解决了苛刻使用条件下轮胎胎肩脱层和胎圈空等问题。     

3×0.24/9×0.225CCST钢丝帘线在全钢载重子午线轮胎中的应用

研究3×0.24/9×0.225CCST钢丝帘线的性能及其在全钢载重子午线轮胎胎体中的应用效果。结果表明：与0.22＋6＋12×0.20HT钢丝帘线相比,3×0.24/9×0.225CCST钢丝帘线的直径和线密度减小,单位直径和线密度的破断力增大,渗胶性能提高,工艺性能优良;与0.22＋6＋12×0.20HT钢丝帘线成品轮胎相比,3×0.24/9×0.225CCST钢丝帘线成品轮胎强度、耐久性能和胎圈耐久性能提高,同时可减小轮胎质量,降低制造成本。     

0.25＋6＋12×0.225HT钢丝帘线在矿山载重子午线轮胎胎圈包布中的应用

研究0.25＋6＋12×0.225HT钢丝帘线在12.00R20矿山载重子午线轮胎胎圈包布中的应用。结果表明：与3＋9＋15×0.175＋0.15钢丝帘线相比,0.25＋6＋12×0.225HT钢丝帘线直径减小,线密度和破断力增大,压延帘布生产工艺良好,以其替代3＋9＋15×0.175＋0.15钢丝帘线应用于12.00R20矿山载重子午线轮胎胎圈包布,成品轮胎的充气外缘尺寸和耐久性能符合国家标准要求,胎圈耐久性能显著提升。     

0.22＋18×0.20ST钢丝帘线的开发

介绍无内胎全钢载重子午线轮胎胎体用超高强度0.22+18×0.20ST钢丝帘线的结构和性能特征,并与0.25+6+12×0.225HT钢丝帘线进行对比。结果表明,与0.25+6+12×0.225HT钢丝帘线相比,0.22+18×0.20ST钢丝帘线的疲劳强度和疲劳后破断力高,等强度替代后可减小钢丝帘线和胶料用量,实现轮胎轻量化。     

超高强度0.22+18×0.20ST钢丝帘线在全钢载重子午线轮胎胎体中的应用

以超高强度0.22+18×0.20ST钢丝帘线替代0.25+(6+12)×0.225HT钢丝帘线应用于全钢载重子午线轮胎胎体。试验结果表明:与0.25+(6+12)×0.225HT钢丝帘线相比,0.22+18×0.20ST钢丝帘线直径和线密度减小,破断力和刚度降低;以0.22+18×0.20ST钢丝帘线替代0.25+(6+12)×0.225HT钢丝帘线后,成品轮胎的外缘尺寸、强度性能、耐久性能和速度性能均满足设计和相关标准要求,且轮胎质量和成本减小。     

3＋9＋15×0.225ST钢丝帘线在全钢工程机械轮胎中的应用

研究3＋9＋15×0.225ST钢丝帘线在全钢工程机械轮胎中的应用。结果表明：与3＋9＋15×0.225HT钢丝帘线相比,3＋9＋15×0.225ST钢丝帘线捻向、捻距、帘线直径、线密度和粘合力基本一致,破断力明显提高,钢丝帘线渗胶性能更好,以其替代3＋9＋15×0.225HT钢丝帘线用于全钢工程机械轮胎胎体,工艺性能良好,帘布质量减小;与7×7×0.22＋0.15HT钢丝帘线相比,3＋9＋15×0.225ST钢丝帘线单位直径破断力和单位线密度破断力提高,钢丝帘线渗胶性能更好,以其替代7×7×0.22＋0.15HT钢丝帘线用于全钢工程机械轮胎带束层,压延和成型工艺性能良好。在部分小规格全钢工程机械轮胎的胎体和带束层中使用3＋9＋15×0.225ST钢丝帘线后,轮胎承载能力满足要求,轮胎耐久性能提升,同时由于减小了帘布压延厚度和质量可以节约生产成本。     

3＋9＋15×0.225ST钢丝帘线在全钢载重子午线轮胎胎体中的应用

研究3＋9＋15×0.225ST钢丝帘线在全钢载重子午线轮胎胎体中的应用。结果表明：与3＋9＋15×0.22＋0.15NT钢丝帘线相比,3＋9＋15×0.225ST钢丝帘线破断力提高30%,刚度提高24%,耐疲劳性能明显改善;以其替代3＋9＋15×0.22＋0.15NT钢丝帘线用于全钢载重子午线轮胎胎体,轮胎破坏能和耐久性能提高,使用寿命延长。     

0.25+6+12×0.225ST钢丝帘线在全钢载重子午线轮胎胎体中的应用

研究0.25+6+12×0.225ST钢丝帘线的性能特点及其在全钢载重子午线轮胎胎体中的应用。试验结果表明:与0.25+6+12×0.225HT钢丝帘线相比,0.25+6+12×0.225ST钢丝帘线强度更高;以其替代0.25+6+12×0.225HT钢丝帘线用于全钢载重子午线轮胎胎体,可以提高成品轮胎的耐久性能和胎圈耐久性能,同时减小轮胎质量,降低制造成本。     

0.22+18×0.20ST钢丝帘线在全钢载重子午线轮胎胎体中的应用

研究超高强度新型钢丝帘线0.22+18×0.20ST在全钢载重子午线轮胎胎体中的应用。结果表明:与0.25+6+12×0.225HT钢丝帘线相比,0.22+18×0.20ST钢丝帘线直径和线密度较小,满足轮胎轻量化、绿色环保的要求;以0.22+18×0.20ST钢丝帘线替代0.25+6+12×0.225HT钢丝帘线应用于全钢载重子午线轮胎胎体的生产,成品轮胎外缘尺寸、强度、耐久性能均符合国家标准要求,且滚动阻力降低,满足绿色轮胎安全、低油耗、可翻新、绿色环保的要求。     

十二烷基磺酸根插层Ni~(2+)-Fe~(3+)/Co~(2+)-Ni~(2+)-Fe~(3+) LDHs及其结构研究

应用水热技术制备了二元Ni2+-Fe3+-CO23- LDHs和三元Co2+-Ni2+-Fe3+-CO32- LDHs,以十二烷基磺酸根离子作为插层客体,通过离子交换反应在酸性溶液中实现了十二烷基磺酸根插层Ni2+-Fe3+ LDHs和Co2+-Ni2+-Fe3+-LDHs。十二烷基磺酸根在Ni2+-Fe3+LDHs层间出现了2种空间导向和排列:即十二烷基磺酸根以单层垂直方向排布和以双层垂直方向排布在层间;十二烷基磺酸根在三元组分Co2+-Ni2+-Fe3+-LDHs层间只有一种空间排列方式,即十二烷基磺酸根以单层垂直方向排布于Co2+-Ni2+-Fe3+-LDHs层间。     

The partition coefficients of ethylene between hydrate and vapor for methane + ethylene + water and methane + ethylene + SDS + water systems

The hydrate formation of CH₄+C₂H₄ mixture was studied experimentally in two different cases, with and without the presence of sodium dodecyl sulfate (SDS) in water. The results manifested that the presence of SDS could not only accelerate the hydrate formation process, but also increase the partition coefficient of ethylene between hydrate and vapor drastically. The partition coefficients of ethylene between hydrate and vapor for methane + ethylene + water with the presence of 500 ppm SDS in water were then systematically measured. The experimental temperature ranged from 273.15 to 278.15 K, the pressure ranged from 2.5 to 5.5 MPa, the initial gas-liquid volume ratio ranged from 95 to 240 standard volumes of gas per volume of liquid, and the mole percentage of ethylene in feed gas mixture ranged from 5.28% to 79.36%. The results demonstrated that ethylene could be enriched in hydrate phase and partition coefficients were increased with the presence of SDS in water. This conclusion is of industrial significance; it implies that it is feasible to recover ethylene from gas mixture, e.g., various kinds of refinery gases or cracking gases in ethylene plant, by forming hydrate.     

改型斜发沸石在Na+-Ca2+-Mg2+和NH4+-Ca2+-Mg2+水溶液体系中的离子交换平衡

研究了Na+-Ca2+-Mg2+与钠型斜发沸石和NH4+-Ca2+-Mg2+与铵型斜发沸石的离子交换平衡,分别测定出2个体系的离子交换平衡数据,并利用三维坐标绘制出三元离子交换平衡等温面,计算出改型沸石对体系中离子的分离因数. 结果表明,在Na+-Ca2+-Mg2+溶液体系中,Na+的分离因数>10,Ca2+的在0.4~10之间,Mg2+的小于0.4,斜发沸石离子交换顺序为Na+>Ca2+>Mg2+,且温度升高Ca2+和Mg2+的交换能力增强,而低温则有利于沸石对Na+的选择;在NH4+-Ca2+-Mg2+溶液体系中,NH4+的分离因数>15,Ca2+的在0.2~1.5之间,Mg2+的小于0.2,斜发沸石离子交换顺序为NH4+>Ca2+>Mg2+,且温度升高Ca2+和Mg2+的交换能力增强,NH4+的选择性降低.     

Removal of Zn2+ from the ternary system Zn2+ -Na+ -H+ by cation-exchange resin column

Very dilute solutions containing zinc sulphate, sodium and sulphuric acid were passed down a column of Zeo-Karb 225 cation-exchange resin, and the volume at which zinc first appeared in the effluent (breakthrough volume), together with the volume at which the concentration of zinc in the effluent became equal to its concentration in the influent (equivalent volume), were determined.     

HCl－NaCl－DMS－OH_2O体系中HCl的活度系数

采用电动势法测定了ＨＣｌ＋ＮａＣｌ＋ＤＭＳＯ＋Ｈ_２Ｏ体系在２９８．１５～３１８．１５Ｋ范围内，总离子强度分别恒定在Ｉ＝０．１，０．２，０．５ｍｏｌ·ｋｇ~（－１）情况下的ＨＣｌ的活度系数。应用最小二乘法拟合，表明ＨＣｌ的活度系数遵守Ｈａｒｎｅｄ规则。从粒子间微观相互作用出发阐明了Ｈａｒｎｅｄ参数α_Ａ的物理意义，并给出了α_Ａ与温度和溶液离子强度之间的关系。     

甲基二氯硅烷+甲基三氯硅烷+二甲基二氯硅烷+苯多元系常压汽液平衡研究

卤代硅烷的相平衡数据为硅烷生产所需,而这方面的研究又较缺乏,尤其是甲基乙烯基二氯硅烷生产中所需的汽液相平衡数据尚未见报道.今用新型泵式沸点仪测定了常压(101.325 kPa)下甲基二氯硅烷 甲基三氯硅烷 二甲基二氯硅烷 苯四元系及其四个三元体系和六个二元体系在不同液相组成时的泡点.由所测的二元系数据,用过量自由焓Q函数间接法推算了与之平衡的汽相组成.再用最小二乘法求出二元体系的最佳配偶液相活度系数模型参数.所得的六组最佳二元系Wilson模型参数符合热力学一致性,并用于该体系三元和四元系汽液相平衡数据的预测,将计算的泡点与实验测得的泡点作了比较,其拟合精度良好,关联结果令人满意,硅烷二元系、多元系的热力学模型及VLE数据可为该体系的分离设计提供必要的理论依据.     

三水碳酸镁在Li+Na+K十NH4+Mg+Cl+H2O体系中溶解度的全组分化学模拟（英文）

A chemical model,based on Pitzer activity coefficient model,is developed with a speciation approach to describe the solubility and chemistry of nesquehonite in concentrated chloride solutions.The chemical equilibrium constants for nesquehonite and aqueous species,i.e.0 3 MgCO,3 MgHCO,and MgOH +,are precisely calculated as a function of temperature according to the Van’t Hoff equation by use of standard Gibbs free energy,standard formation enthalpy and heat capacity.The most recent solubility data are regressed to obtain new Pitzer parameters with good agreement.The predictive ability of the new model is improved significantly in comparison with previous models.The behavior of speciation chemistry for nesquehonite in various chloride media is explained through this modeling work on the basis of the 2 3 Mg /CO bearing species distribution,activity coefficient and pH changes.     

Combustion processes in the system Zr+Nb+C+H

Erevan. Translated from Fizika Goreniya i Vzryva, Vol. 26, No. 5, pp. 33–36, September–October, 1990.     

磷钨杂多酸插层Ni2+-Mg2+-Al3+-LDHs复合材料的合成

利用尿素回流法合成Ni²⁺-Mg²⁺-Al³⁺-LDHs，Ni²⁺-Mg²⁺-Al³⁺-LDHs层状材料经300 ℃焙烧后，以焙烧产物作为前驱体，通过焙烧重组法将磷钨杂多酸成功引入Ni²⁺-Mg²⁺-Al³⁺-LDHs层中，制备磷钨杂多酸插层Ni²⁺-Mg²⁺-Al³⁺-LDHs复合材料。     

Liquid+liquid equilibria of ternary water+carboxylic acid+solvent systems at 288.15 K

The experimental liquid-liquid equilibrium (LLE) data for six ternary systems containing (chloroform+propionic acid+water), (chloroform+acetic acid+water), (diethyl ether+propionic acid+water), (diethyl ether+acetic acid+water), (trichloroethylene+propionic acid+water) and (trichloroethylene+acetic acid+water) were measured at 288.15 K and at atmospheric pressure. An accurate and simple titration method was used for determining of the concentration of carboxylic acid in the both liquid phases at equilibrium. The reliability of the experimental tie-line data was confirmed by using the Othmer-Tobias correlation. The distribution coefficients and selectivity factors were presented to evaluate the efficiency of the solvents for extraction of carboxylic acid from water. The results show that chloroform and diethyl ether are satisfactory solvents for extraction of carboxylic acids from water. Trichloroethylene separates propionic acid from water; however, it cannot be used as a solvent for separation of acetic acid.