磷化渣的综合利用

磷化渣中含有大量的磷酸铁和磷酸锌，我们采用氟水络合浸出回收磷酸锌，碱水浸出回收磷酸锌后余渣中的磷酸铁，可制得磷酸三钠和氧化铁红。     

氯化钙废液生产复合磷酸锌防锈颜料新工艺

以氯化钙废液为原料,生产低成本高效的复合磷酸锌防锈颜料,是一项变废为宝的环保型新工艺,具有广阔的市场前景和社会效益。     

有机酸催化合成微细级磷酸锌

为了改善磷酸锌的分散性，利用有机酸作为催化剂，常温条件下直接合成了磷酸锌。试验结果表明：合成的磷酸锌不用粉碎，粒径直接达到38μm以下，产品粒度分布均匀，白度比普通直接法生产的磷酸锌提高2％，其他各项指标均达到中国的企业标准要求。该工艺无需加热，减少了粉碎工序，节约了能源。     

含水磷酸锌化学转化处理液及处理金属材料的方法（一）

本发明涉及一种用于金属材料、例如钢材或镀锌钢材的含水磷酸锌化学转化处理液，以及磷酸锌化学转化处理金属材料的方法，更具体讲，本发明涉及一种含水磷酸锌化学转化处理液及用于金属材料的方法，它可均匀地形成包括很细的化学转化晶体的致密磷酸锌化学转化层，它的优点是使化学转化层对油漆或大漆表现出增强的粘合力。     

磷酸锌生产工艺研究

磷酸锌是一种性能优良的新型无毒防锈颜料，应用于涂料工业，可配制各种防锈漆，可代替红丹作防锈底漆，代替含铅基料作各类涂料、漆类的基料使用，还可用于钢材的磷化处理，以及医学行业等。目前，中国厂家生产磷酸锌一般采用直接法。介绍一种磷酸锌的新生产方法。该方法引入了间接的生产方法，放宽了原料的质量要求，大大降低了磷酸锌的生产成本。方法如下：将低品位氧化锌加入到R溶剂中，溶解、过滤、精制后与磷酸反应，并用烧碱调其pH，制得磷酸锌精浆，分离、洗涤、干燥后得到成品磷酸锌。滤液与氟硅酸反应使R溶剂再生循环使用，并得到副产物氟硅酸钠。该方法将原直接法生产磷酸锌的固-液反应，改为液-液反应，从而缩短了反应时间。     

防锈颜料磷酸锌生产工艺改进

防锈颜料磷酸锌生产工艺改进梁伟光，解志远（河北省石油化工研究所石家庄市０５００３１）防锈颜料磷酸锌用于配制各种底漆和防腐涂料，也可作为牙科的印膜材料。有一磷酸锌生产厂存在工艺不合理、产品质量不合格、收率低等问题。我们受厂家委托，对其生产工艺进行了改进...     

活性超细含钾磷酸锌的制备及其活化机理的研究

合成了一种含磷酸锌钾和四水磷酸锌的新型活性超细磷酸锌颜料。用XRD、FT-IR和纳米激光粒度仪对其进行表征,测定了溶解度、电导率、pH缓冲区间,从理论上探讨了该颜料的活化机理。实验结果表明:与普通正磷酸锌相比,随着局部pH环境的变化,活性含钾磷酸锌能离解出较多的Zn2 和PO43-离子,改善了正磷酸锌的溶解性、水解性和pH缓冲区间,从而提高抑制阴极剥离反应的能力。     

纳米晶粒磷酸锌锂固相反应合成的研究

以聚乙二醇-400（PEG-400）为模板，用硫酸锌和磷酸二氢铵为原料经低热固相反应合成得到磷酸锌铵[NH4Zn2（POP4）（HPO4）]，再以磷酸锌铵和氢氧化锂为反应体系进行了固相反应合成研究，并进行了红外光谱、X射线衍射及热分析研究，结果证明，反应体系在700℃保温2h后进行固相合成反应，可获得比较纯的纳米晶粒磷酸锌锂，合成工艺简便，为企业生产提供了一种新的途径。     

高品质磷酸锌的研制

以低等级氧化锌为原料，采用反应媒循环法液一液反应制备磷酸锌，产品质量符合国际标准ISO6745--1990涂料用磷酸锌颜料的指标要求，产品平均粒径2um左右，生产成本比传统生产工艺的成本低。     

纳米磷酸锌颜料的合成及其数据挖掘技术

借助均匀试验设计、回归分析、网格优化法等普通的软件，在纳米磷酸锌合成中应用数据挖掘技术，结果发现：如果没有微波辐射，室温固相反应也可以合成磷酸锌纳米晶体。     

底面合一的水性带锈防锈漆

采用纯丙及苯丙复合乳液为基料,三聚磷酸铝,磷酸锌,氧化锌,滑石粉,硫酸钡等为颜填料制备底面合一的水性带锈防锈漆,介绍乳液及其漆的生产方法及施工方法。     

一种新型防锈颜料磷酸锌铝的合成及机理研究

提出了一种将铝离子引入磷酸锌结构的方法。使用正交试验分析及粒径分布分析,优选出最优的反应条件参数,获得收率为 95.3%、中值粒径 d（0.5）为 1.529 μm的磷酸锌铝;使用硅烷偶联剂改性的磷酸锌铝颗粒微细、大小均匀。将改性磷酸锌铝制成水性环氧底漆与水性丙烯酸防锈漆 并进行耐盐雾及贮存性测试,结果表明：改性磷酸锌铝比磷酸锌表现出更好的抑泡性能与防锈性能;探讨了磷酸锌铝的防锈机理,推测磷酸锌铝与金属基材表面形成了电化学抑制 -物理隔绝的综合防腐蚀体系。获得的磷酸锌铝产物在水性防锈涂料中具备较好的使用前景。     

Deposition of zinc–zinc phosphate composite coatings on steel by cathodic electrochemical treatment

The present work aims at the development of an energy-efficient and eco-friendly approach for the deposition of zinc phosphate coatings on steel. The study describes the possibility of preparing zinc–zinc phosphate composite coatings by cathodic electrochemical treatment using dilute phosphoric acid as an electrolyte and zinc as an anode. The methodology enables the preparation of coatings with different proportions of zinc and zinc phosphate by suitably varying the applied current density, pH, and treatment time. Adhesion of the coating on mild steel and adhesion of paint film on the phosphate coating were found to be good. The surface morphology of the coatings exhibited platelet-type features and small white crystals (agglomerated at some places) which represented zinc and zinc phosphate, respectively. An increase in current density (from 20 to 50 mA/cm²) increased the size of the zinc crystals, and coatings prepared at 40 and 50 mA/cm² resembled that of electrodeposited zinc. Since the proportions of zinc and zinc phosphate could be varied with applied current density, pH, and treatment time, it would be possible to use this methodology to prepare coatings that would offer different degrees of corrosion protection.     

低纯度氧化锌制备磷酸锌研究

研究了用低纯度氧化锌(96%)通过复合溶剂净化,同时将氧化锌转化为液相改变传统的固-液相反应为液-液反应制备磷酸锌的新工艺,考察了净化和液-液反应的有关的工艺条件,制备得到高纯度磷酸锌。     

新法合成磷酸锌锂及其多重数据挖掘

对合成磷酸锌锂的新方法进行了研究.以磷酸锌铵和碳酸锂为原料经室温固相反应得到前驱体,接着让这一前驱体在高温下保温晶化得结晶形态的磷酸锌锂.基于均匀设计试验方案以及数据挖掘技术的应用,研究了研磨时间、保温时间、保温温度对磷酸锌锂晶体合成的影响.XRD表征的结果表明,用最佳工艺条件合成得到的产物为63 nm的LiZnPO4,且产物产率高达99.5%.实验成功地同时优化控制了磷酸锌锂的组成及产率,从而得到比较纯净的、结晶态的磷酸锌锂晶体.     

表面活性剂在磷酸锌低热固相合成中的应用

利用低热固相化学反应法开展磷酸锌结构材料合成研究，在不同表面活性剂存在下，以不同锌盐为原料，得到了微米级棒状结构、超细零维球状结构、纳米级空心球状结构及纳米级空心球棒状结构，并应用TEM和SEM等手段对产物结构、形貌和尺度的差异进行了表征。得出可以通过适当的实验设计，找到利用低热固相化学反应法合成磷酸锌特定结构材料的方法的结论。     

Corrosion inhibition at galvanized steel cut edges by phosphate pigments

The corrosion mechanisms and the inhibiting effect of sodium phosphate at cut edges on galvanized steel was studied by potentiodynamic polarization, EIS and monitoring of local ionic currents made by means of the scanning vibrating electrode technique (SVET). Assessment of zinc and of iron single electrodes was also made for comparison.In the absence of phosphate, corrosion of electrogalvanized steel at the cut edge is cathodically inhibited by the precipitation of zinc corrosion products over the steel surface. Mapping of the ionic currents revealed that the cathodic area becomes laterally shifted away from the anode as zinc corrosion products precipitate along parallel lines that are dictated by the location of the maximum cathodic currents. Sodium phosphate revealed inhibiting properties on the cut edge by precipitation of zinc phosphate, in the form of gel-like zinc phosphate clusters. Estimated inhibiting efficiencies for the cut edge were slightly above 80%.     

Improvement of anticorrosive performance of phosphate-based alkyd paints with suitable additives

The purpose of this investigation was focused on reducing the content of zinc phosphate in anticorrosive paints by means of the incorporation of low quantities of selected soluble corrosion inhibitors. The article describes the anticorrosive behavior of alkyd paints containing reduced levels of zinc phosphate, zinc oxide, and some soluble compounds used as additives (e.g., sodium polyphosphate, sodium phosphate, and sodium benzoate). Anticorrosive solventborne alkyd paints were formulated with a zinc phosphate content of 10% by volume (v/v) with respect to the total pigment concentration. In all cases, the PVC/CPVC (pigment volume concentration/critical pigment volume concentration) ratio was 0.8. Experimental paints, applied on sandblasted SAE 1010 panels, were evaluated by accelerated tests (salt spray cabinet) and electrochemical measurements (electrochemical impedance spectroscopy, EIS). The results show that the additions of small amounts of soluble corrosion inhibitors to low content zinc phosphate paint formulations enhance their performance in a very remarkable way. Perhaps, the most outstanding feature is that the employment of soluble additives allowed the reduction of the zinc phosphate content with concomitant savings.     

Evaluation of anti-corrosive pigments by pigment extract studies, atmospheric exposure and electrochemical impedance spectroscopy

The inhibition efficiencies of zinc chromate, barium metaborate, calcium silicate, amino carboxylate, calcium barium phosphosilicate, aluminum triphosphate and a modified zinc phosphate on the corrosion of steel and zinc were determined by polarization experiments on pigment extracts. Zinc phosphate and zinc chromate were the best and were studied further to determine the effect of pH and chloride concentration on their inhibition of steel. Zinc chromate is adversely affected by high concentration of chloride ions, which effect seems to be less pronounced on zinc. A low pH, although increasing the solubility of zinc phosphate, does not increase its efficiency. The pigments were also incorporated into an epoxy-poly(amide) binder, applied to cold-rolled steel and galvanized steel, exposed at a marine exposure station and the degradation monitored by electrochemical impedance spectroscopy. There was a general correlation between the results of pigment extract studies and atmospheric exposure except in the case of phosphate pigments on cold rolled steel.