HEDP作为润滑油抗磨剂的应用研究

考察了1-羟基乙叉-1，1-二膦酸（二辛）酯（HEDP）的极压抗磨性能以及与硫化异丁烯的复合效应，并用俄歇电子能谱（AES）分析了其四球机试验后钢球表面的元素。结果表明，HEDP作为抗磨剂用于极压性润滑油中，具有优良的极压抗磨性能，其与硫化异丁烯复配也显示出了良好的协同效应。HEDP对于油品的防锈性能具有积极的作用，对有色金属的腐蚀无不良影响，具有多效功能，对于研制低剂量的极压性油品配方具有重要意义。HEDP应用于重负荷车辆齿轮油的全配方中，所调制的复合剂添加量不大于4．5％的GL-5车辆齿轮油符合GB1389592质量标准。     

聚天冬氨酸与含磷阻垢剂复配产品的阻垢性能

聚天冬氨酸作为阻垢剂具有可完全生物降解的优越特性，但聚天冬氨酸本身的阻垢效果无法达到市售阻垢剂的水平。研究了聚天冬氨酸与市售的含磷阻垢剂复配产品的阻垢性能。结果表明，在相同阻垢剂用量的条件下，用质量分数为50％的聚天冬氨酸与50％的HEDP或ATMP，PBTCA复配产品的阻碳酸钙垢性能分别与100％的HEDP或ATMP，PBTCA的性能一致，说明用聚天冬氨酸可以取代这些含磷阻垢剂的50％。     

Dense Plasma Injection Experiment at MCX

We present preliminary results of the High Density Plasma Injection Experiment at the Maryland Centrifugal Experiment (MCX). HyperV Technologies Corp. has designed, built, and installed a prototype coaxial gun to drive rotation in MCX. This gun has been designed to avoid the blow-by instability via a combination of electrode shaping and a tailored plasma armature. An array of diagnostics indicates the gun is capable of plasma jets with a mass of 160 μg at 70 km/s with an average plasma density above 10¹⁵ cm⁻³. Preliminary measurements are underway at MCX to understand the penetration of the plasma jet through the MCX magnetic field and the momentum transfer from the jet to the MCX plasma. Data will be presented for a wide range of MCX field parameters, and the prospects for future injection experiments will be evaluated.     

羟基亚乙基二膦酸合成中正磷酸含量的控制方法

简介羟基亚乙基二膦酸的性能及其正磷酸含量的控制方法。     

Adsorption mechanism of non‐toxic organic inhibitors on steel in solutions at pH 8 determined by electrochemical quartz crystal microbalance measurements

The adsorption on steel of two compounds, ascorbic acid salts (SA) and 1‐hydroxyethylidene,1‐diphosphonic acid salts (SHEDP), used alone or simultaneously, was studied using an electrochemical quartz crystal microbalance (EQCM). These products are considered to be non‐toxic organic corrosion inhibitors. SA adsorption was greater at cathodic potentials than at the corrosion potential, while SHEDP adsorbed better at the corrosion potential. The effectiveness of these two inhibitors is discussed in relation to the polarization curves. Several hypotheses are discussed to explain the adsorption mechanism in the presence of the two compounds used either alone or together.     

紫外光催化氧化法消解循环水中HEDP

为快速消解循环水中的羟基亚乙基二膦酸(HEDP),利用XPA系列光化学反应仪,采用紫外光催化氧化法对循环水中的HEDP进行消解。研究了氧化剂种类及用量、消解时间、p H等参数对HEDP消解率的影响,确定了最佳反应条件。实验结果表明:当氧化剂Na2S2O8质量浓度为1.0 g/L,紫外光照时间为8 min,p H为7左右时,HEDP的消解率可以达到98%以上。实验测定值的相对标准偏差﹤1%,精密度较高。该方法简单快速,重现性好,具有良好的应用前景。     

CaCl_2螯合沉淀-Fenton氧化联合处理HEDP镀铜废水

采用CaCl_2螯合沉淀-Fenton氧化联合处理湖南湘潭某机械厂1-羟基乙叉-1,1-二膦酸(HEDP)镀铜废水,研究了螯合剂CaCl_2投加量、反应pH,反应时间,Fenton反应pH、反应时间、H_2O_2用量,[Fe~(2+)]/[H_2O_2]比值等对处理效果的影响.结果表明,CaCl_2螯合沉淀-Fenton氧化联合方法能有效处理HEDP镀铜废水,在优化反应条件下,COD、TP和Cu~(2+)去除卒分别达到95.8%,99.8%和99.87%,出水基本达到电镀污染物排放标准(GB 21900-2008)要求.     

Synergistic effect of some antiscalants as corrosion inhibitor for industrial cooling water system

In order to study synergistic effect, various combinations of antiscalants 1-hydroxyethane-1,1-diphosphonic acid (HEDP), sodium hexametaphosphate (SHMP), sodium tripolyphosphate (STPP), and trisodium phosphate (TSP), were investigated as corrosion inhibitors for carbon steel. Corrosion rate and percentage inhibition efficiency of various combinations of antiscalants as corrosion inhibitors (20/80, 40/60, 60/40, 50/50, 80/20, and 100 ppm of different combinations of HEDP, SHMP, STPP, and TSP) in synthetic cooling water VI (692 ppm of Cl⁻ ions) was determined by weight loss, electrochemical polarization technique, and metallurgical microscopy technique. It was observed that a 50/50 ppm combination of HEDP and SHMP gave 98% corrosion inhibition efficiency and maximum synergistic effect. The percentage inhibition efficiency of HEDP when mixed with other antiscalants as corrosion inhibitors at 50/50 ppm concentration was found in the following order HEDP/SHMP > HEDP/STPP > HEDP/TSP. The synergistic effect of HEDP/SHMP combination is due to intermolecular hydrogen bonding between the molecules of HEDP and SHMP, which results in the adsorption of uniform multilayered two-dimensional film of –HEDP–SHMP– molecules on carbon steel surface.     

一次清洗剂 HEDP 的试验研究

主要探讨ＨＥＤＰ对热力设备的清洗性能,一次清洗钝化效果,为提高化学清洗效率,改善劳动强度,降低清洗成本、缩短清洗周期、减少环境污染开辟新途径。     

绿色水处理剂聚天冬氨酸缓蚀协同效应的研究

聚天冬氨酸（PASP）是一种新型的绿色生物可降解缓蚀阻垢剂。该文用失重法研究了聚天冬氨酸对碳钢的缓蚀性能以及与HEDP、锌盐的缓蚀协同效应。研究表明。聚天冬氨酸、HEDP、锌盐在自来水中对碳钢具有良好的缓蚀协同效应。