The corrosion inhibitor HG1, which is based on the HEDP, is prepared and studied. It is an effective anodic type corrosion inhibitor and has good inhibition efficiency for corrosion of carbon steel in the simulated oilfield production water.
研制了以HEDP为基础的缓蚀剂HG1，该缓蚀剂是阳极抑制型缓蚀剂，在模拟近中性油田产出水中具有良好缓蚀性能。
Compared with other data layouts, such as B-CODE, BG-HEDP also has optimal update penalty, high reliability and low encoding/decoding complexity, its redundancy is very close to optimal value, while it is superior in extensibility to others.
与B-CODE等同类双容错数据布局相比，BG-HEDP同样具有更新代价最优、高可靠性和低编码/解码复杂度的优点，冗余率接近最优，而扩展性更好。
In the given conditions, the evaluation results of PBTC, HEDP, ATMP etc showed that the method was perfect in stability and repeatability and could effectively meet the needs of the accurate and rapid evaluation of scale inhibitor performance.
在给定实验条件下，对PBTC、HEDP、ATMP等阻垢剂进行的评定结果表明：该方法具有比较理想的稳定性、重复性，能更好满足水处理剂生产企业和众多行业用户对药剂阻垢性能评定的需求。
The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.
通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理，发现POCA是一种阴极型缓蚀剂，与HEDP、Zn~(2+)具有优良的协同增效作用；POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大，且其轨道电子布居数均大于1，因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用；对铜合金具有一定的腐蚀作用，但腐蚀作用比HEDP等有机膦药剂要小得多，同时与BTA具有优良的相容性，添加1mg／L的BTA则可以有效地防止铜合金的腐蚀。
Rotary coupon corrosion tests was used in circulating cooling water whose condensing multiple k=1.5.lt showed that the anticorrosion rate on carbon steel was 97.28% with amphoteric imidazoline's concetration of 20mg/L; and it reached 99.04% with the compound system of amphoteric imidazoline and HEDP at total concentration of 20 mg/L.
在浓缩倍数k=1.5的循环冷却水中用旋转挂片失重法得出：两性咪唑啉用量为20mg/L时对碳钢的缓蚀率达到97.28%；与HEDP复配后总剂量为20mg/L时缓蚀率达到99.04%。
Improvement on the Stability of HEDP Acid Bath for Electroless Ni-P Plating
提高HEDP酸性化学镀Ni&P槽液稳定性的途径
It can be observed that there is a good synergistic effect between HEDP, HPMA and AMPS, ternary system has the wide temperature adaptiveness, the calcium tolerance and the acidproof alkaliproof performance.
HEDP、HPMA、AMPS组成的三元配方具有明显的阻垢协同效应，该阻垢配方具有较宽的温度适应能力、钙容忍度和耐酸碱性能；
Molecular modeling computational method proves that the obvious inhibition effect of HEDP comes from the adsorption around kink site.
分子模拟计算证实HEDP的阻垢效果来自扭折点的吸附。
The 1-hydroxy ethylidene-1, 1-diphosphonic acid (HEDP) adsorption at the kink site on { 104 } plane of calcite crystallite and the deposition of CaCO_3 near that kink site have been simulated by the computational method of the molecular modeling.
运用分子模拟的计算方法，模拟了羟基亚乙基二膦酸（HEDP）分子在方解石{104}面上扭折点处的吸附，以及方解石{104}面上扭折点附近碳酸钙分子的沉积过程。
The results showed that the efficiency of 2 phosphinic acid tetrane 1, 2, 4 tricarboxylic acid (PBTCA) was better than that of the hydroxyl ethylidene bis (2 ethylhexyl) phosphoric acid (HEDP) and the polybasic alcohol phosphonate ester (PC 604).
结果表明，阻垢剂2膦酸丁烷1,2,4三羧酸（PBTCA）明显优于多元醇膦酸酯（PC604）和羟基乙叉二膦酸（HEDP），HEDP与PBTCA复配明显优于与PC604复配。
The gravimetrie method for HEDP by using corrosion inhibitor and incrustation inhibitor unite method with quinoline phosphomolybdate is studied. It shows this method has good accuracy and precision.
以喹啉磷钼酸盐重量法对由缓蚀剂与阻垢剂联合法制备的HEDP主含量进行分析研究，结果表明此方法具有良好的准确度和精密度。
The Determination Of Hedp By Using Unite Method With Quinoline Phosphomolybdate Gravimetic Method
喹啉磷钼酸盐重量法测定联合法制备HEDP的含量
Technique of debasing phosphorous acid and characteristic in producing HEDP
浅谈HEDP生产中降低亚磷酸技术及其特点
Research on Scale Inhibition Performance of Compound of HPMA, HEDP and AMPS Hydrolyzed polymaleic anhydride was synthesized using iron ammonium sulfate as catalyst and hydrogen peroxide as initiator in aqueous media.
水解聚马来酸酐三元复配阻垢性能研究以水为溶剂，30%过氧化氢为引发剂，硫酸铁铵为催化剂，直接合成了水解聚马来酸酐。
It can be a reference for improving HEDP production control.
本文对改进现有HEDP生产控制具有参考价值。
Clinical value of combined therapy with~(188) Re-HEDP and pamidronate in breast cancer with bone metastasis
~（188）Re-羟乙基二膦酸与帕米膦酸二钠联合治疗乳腺癌骨转移的临床价值
While the scaling ionic concentration, the temperature increases, the PH value increase and prolonging the scaling time, the scale control efficiency drops.
成垢离子浓度增加、体系温度的升高、PH值的增加以及成垢时间的延长，阻垢剂的阻垢率下降；产品与HEDP复配后的阻垢率下降。
The single crystal of HEDP was obtained through recrystallization method, which was characterized by single crystal X-ray diffraction technique, infrared and NMR spectroscopy.
用重结晶方法得到了羟基乙叉二膦酸的单晶，通过单晶X-射线衍射技术测定了晶体的结构，并用红外光谱和核磁共振波谱对其进行了表征。
Electrochemical behavior of copper deposit on iron electrode in HEDP bath
铁电极上HEDP镀铜的电化学行为
DTPMP、PBTCA、HEDP are certained as the ideal stabilizer, and the optimum amount of these three stabilizer are 0.6%, 1.0%, 0.6% of hydrogen peroxide amount respectively.
确定了DTPMP、PBTCA、HEDP三种稳定剂效果较理想，其最佳用量分别为反应液中过氧化氢质量分数的0.6%、1.0%、0.6%。