PVC生产中的二次水回收工艺改造

介绍了在PVC生产过程中产生的蒸汽冷凝水、压滤水、废自来水、母液水的回收和综合利用的情况。工艺改进后,青岛海晶化工集团有限公司12万t/a PVC装置可节水67万t/a,节约资金204万元/a。     

Contributions to characterization of poly(vinyl chloride)–lignin blends

The present study evaluates the impact of blending organosolv and kraft lignins, which are natural polymer by‐products in the pulp and paper industry, with plasticized poly(vinyl chloride) (PVC) in flooring formulations. Also examined is the impact of replacing dioctyl phthalate, a PVC industry general‐purpose plasticizer, with diethylene glycol dibenzoate (Benzoflex 2‐45), tricresyl phosphate (Lindol), or alkyl sulfonic phenyl ester (Mesamoll) in these formulations. The influence of the different types of lignins and plasticizers on the processibility, thermal, and mechanical properties of the blends is discussed. These properties demonstrate that partial replacement of PVC (20 parts) with different lignins is feasible for some formulations that can be successfully used as matrices for a high level of calcium carbonate filler in flooring products. In addition, the data demonstrate that the presence of certain plasticizers, which interfere with the intramolecular interactions existing in lignins, may allow the lignin molecules to have more molecular mobility. The morphology and the properties of PVC plasticized lignin blends are strongly influenced by the degree and mode of the lignin plasticization and its dispersion within the PVC matrix. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2732–2748, 2006     

氯乙烯-丙烯酸酯共聚树脂生产技术进展

介绍了氯乙烯-丙烯酸酯共聚树脂的主要品种、应用领域及生产方法,并提出了发展建议。     

以氧化镁和氧化锌为主稳定剂的PVC的热稳定性和力学性能

用HAAKE流变仪研究了氧化镁／氧化锌稳定体系对聚氯乙烯的动态热稳定性能。结果发现，在氧化镁／氧化锌质量比为2／3的条件下，配合环氧大豆油、硬脂酸钙、无毒亚磷酸酯和有机稳定剂作为辅助稳定剂，其初期着色和热稳定效果都超过了市售钙锌稳定体系，流变性能和动态热稳定特性接近铅盐稳定体系。用这种稳定体系稳定的PVC的力学性能与市售钙锌稳定体系稳定的相当。     

废紫铜催化制备氯化亚铜新工艺

介绍以废紫铜为原料，在催化剂作用下，铜直接同盐酸，空气中氧发生反应制备氯化亚铜的新工艺，试验确定了最佳反应条件，产品质量达到了GB1619－79的标准要求，该工艺具有原料消耗少，反应速度快，流程短，操作简单，生成成本低等特点。     

3,5-二氯苯甲酸的合成

考察了在以邻氨基苯甲酸为原料，三氯化铁为催化剂，X为溶剂，直接通氯氯化，再经重氮化合物3，5－二氯苯甲酸的工艺过程中，物料配比，反应湿度等反应条件对收率的影响，确定了合成的适宜条件，通过此合成工艺，产品的收率可达85％以上。     

超临界水中NaCl无限稀释扩散系数的研究

The molecular dynamics(MD) was employed to simulate the diffusion coefficient of sodium chloride at infinite dilution in supercritical water from 703.2K to 763.2K and from 30 MPa to 45 MPa ,Based on the simulated data and the Patel-Teja(PT) equation of state and the Liu-Ruckenstein equation,an equation for calculating the diffusion coefficient of NaCl at infinite dilution in supercritical water is proposed,Both the agreement between the simulated and correlated data,and that between the simulated and predicted data of diffusion coefficients for NaCl in supercritical water ranging from 703.2K to 803.2K and from 25 MPa to 50MPa show that this equation is applicable for calculation of diffusion coefficients.     

柱前衍生反相高效液相色谱法快速测定3,5-二氯苯甲酰氯

以无水甲醇作柱前衍生试剂，建立了反相高效液相色谱法间接测定3，5-二氯苯甲酰氯的新方法。实验结果表明，在流动相：甲醇-水（85：15），流速：1．0mL／min，检测波长：288nm的条件下，定量校正曲线具有良好的线性关系，相关系数（r）为0．9999。方法用于样品中标题物质的测定，RSD=0．19％（n=6），加标回收率为99．9％-105％。     

活性中间体失水甘油基三甲基氯化铵的性质研究

以环氧氯丙烷和三甲胺为原料 ,常温下合成活性中间体失水甘油基三甲基氯化铵 (GTA)。通过对GTA的吸水性和水解性的定量分析可知 :温度上升水解加快 ,吸水减慢 ;吸水与水解都随时间延长加强。在较低浓度的GTA水溶液中 ,随时间的延长GTA逐渐水解失效 ,但质量分数为 70 %～ 80 %的GTA稠浆的分解速率常数却很小。     

Electrochemistry at capped platinum nanoparticle Langmuir Blodgett films: A study of the influence of platinum amount and of number of LB layers

Platinum nanoparticles (n-Pt), over-grafted with 2-thiophenecarbonyl chloride are assembled on gold electrodes, by the Langmuir Blodgett (LB) technique using behenic acid (BHA) as promoting agent. These layers are electrochemically active without any preliminary activation. The [Fe(CN)₆]^3−/4− redox couple was used as electrochemical probe. This paper reports on the influence of the number of deposited LB layers, and the n-Pt density on the electrochemical response. n-Pt density was modified by the change of the “BHA/n-Pt” ratio. Cyclic voltammograms of “[Fe(CN)₆]^3−/4−” were observed whatever the coating conditions. As soon as the first layer was deposited the electrochemical response was associated to the n-Pt coverage, its response slightly increased up to a steady state for five or seven layers. As expected, the increase of the Pt density favored the increase of the current density. XPS analysis performed before and after electrochemical cycling showed that 4-mercaptoaniline capped platinum nanoparticles, and their over grafting were chemically and electrochemically stable. Analysis of influence of the number or the n-Pt density of the layers showed that the electrochemically active part of LB electrodes was provided by the last layer plus a part of the underlying one.