环氧预浸料质量控制研究进展

预浸料是先进复合材料制品生产过程中的中间材料，它也是复合材料结构的基本单元；复合材料的力学性能、化学性能以及成型工艺性在很大程度上取决于预浸料的物化特性。本文综述了国内外复合村料预浸料质量控制研究的新进展，重点介绍了红外光谱、凝胶渗透色谱、高效液相色谱、差示扫描量热法等现代仪器分析技术在碳纤维、玻璃纤维／环氧树脂预浸料质量控制研究中的应用。     

浅谈复混肥料的发展及检测

复混肥料的发展,检测过程中的注意问题     

缩短翠绿料向普白料转变周期

介绍翠绿料转产普白料沓的料方设计、氧化还原指数及换料过程中的措施，以达到缩短换料周期的目的。     

磁性油墨的研究进展

综述国内外磁性油墨的研究现状。分析了磁性油墨中的强磁性材料、连接料、填充料和添加料的各种分类、配比及各组分作用,探讨了磁性油墨的研究方向。首次指出:在今后的研究中应该采用纳米级的磁性颜料和复合磁性颜料,选用合成树脂作为连接料,并应重点研究添加料与磁性油墨性能的关系。     

稀土与陶瓷

讨论了稀土元素对高温结构陶瓷性质的影响及在色釉料中的应用。     

利用电镀厂废镍料制取硫酸镍

采用酸解法从电镀厂废镍料中的制取硫酸镍，给出了主要工艺操作参数。     

复混肥料生产中间控制测定的探讨

《复混肥料ZBG21002-87》是测定复混肥料成品的国家标准方法。由于标准法费时费试剂,不宜用作生产中的中间控制测定,根据我厂的经验又补充了一个复混肥料生产中间控制测定供参考。     

超高分子量聚乙烯材料在玻璃行业的典型应用

介绍了一种新型的非金属材料——超高分子量聚乙烯(UHMWPE)的特性,列举了其在玻璃生产中的应用。     

陶瓷坯用色料的应用和展望

论述了坯用色料在抛光砖、通体砖和外墙砖装饰中的应用及坯用色料与釉用色料的差异、两者的共性和特性,特别是高温下的物理、化学环境和变化.介绍了主要的坯用色料,主要的天然坯用色料和人工合成坯用色料及其在应用中须注意的问题.综述了一些主要坯用色料的结构、组成和应用中须注意的问题,以及陶瓷坯用色料的发展动向和趋势.     

聚丙烯粉料生产中的质量控制

分析了间歇液相本体法聚丙烯生产中的质量问题,重点讨论了聚丙烯粉料生产中块料、黑料及降解料产生的原因,并提出预防措施。     

单烷基磷酸酯的应用性能研究

单烷基磷酸酯是一类重要的表面活性剂原料,广泛应用于日化、纺织、采矿等工业领域,但缺乏针对单烷基磷酸酯应用性能的系统研究。本文以提纯前后单烷基磷酸酯作为原料,研究了产品的乳化性、润湿性和起泡性,并测出了不同浓度的纯品单烷基磷酸酯溶液在室温下的表面张力,进一步求出了单烷基磷酸酯的cmc。实验结果表明:单烷基磷酸酯具有良好的乳化性和润湿性,提纯后单烷基磷酸酯乳化性、润湿性和起泡性均较未提纯粗品有明显提高,适合添加到对杂质含量要求苛刻的产品中。本文研究内容国内未见相关研究报告。     

夹套水冷式埋刮板机在磷酸一铵生产中的应用

为了降低200kt／a磷酸一铵装置所生产的粉状磷酸一铵产品的包装温度和控制产品结块现象,采用夹套水冷式埋刮板机对喷粉塔出口物料进行冷却。改造后,磷酸一铵产品的包装温度降低了7～9℃,结块现象明显减轻。     

Mussel adhesive protein as an environmentally-friendly harmless wood furniture adhesive

Recent adhesive technologies have focused on the development of high-quality and eco-friendly adhesives. Thus, there is a gradual shift from the currently used chemical-based adhesives toward harmless adhesives with improved quality and performance. Here, we evaluated the potential use of bacteria-produced recombinant mussel adhesive protein (MAP) as a harmless wood furniture adhesive. We formulated a MAP wood adhesive as an inclusion body type for economical preparation, and we confirmed its harmlessness through the non-detection of volatile organic compounds and heavy metals. The formulated MAP showed sufficiently strong bulk adhesive strength for the dried gluing of wood adherends. We also found that the formulated MAP wood adhesive exhibits robust adhesion in various environmental conditions, including open assembly times, incubation times, temperatures, and humidity levels. In summary, the developed recombinant MAP could be successfully used as a promising environmentally-friendly, harmless wood furniture adhesive.     

废水氮磷制备磷酸镁铵的研究

磷酸镁铵是一种难溶于水的白色晶体，通过形成磷酸镁铵沉淀可实现对废水中氮磷的去除和回收利用，沉淀可作为一种缓释肥。对磷酸镁铵的形成机理、影响因素作了较系统的综述，认为磷酸镁铵在废水中产生沉淀的倾向与平衡时的化学势（μao）和过饱和时的化学势（μs）之差（△μ），过饱和度，废水中的镁离子、铵离子、磷酸根离子比例，水质特征及pH有关，且沉淀的完全程度还与沉淀时间密切相关，其中pH对沉淀影响最为显著。     

肥料级磷酸一铵料浆提纯制备电池级磷酸一铵研究

介绍利用肥料级磷酸一铵料浆提纯制备电池级磷酸一铵的工艺路线和条件:将肥料级磷酸一铵料浆过滤除去不溶性杂质,滤液用氨水调节pH,并加入除杂剂使杂质沉淀后过滤,再浓缩结晶得到电池级磷酸一铵;结晶母液及滤渣返回化肥系统生产化肥。此法所用原料成本低,工艺简单,得到的磷酸一铵产品纯度高,可用于生产锂电池正极材料磷酸铁及磷酸铁锂,具有较好的社会效益及经济效益。     

Nitric Oxide Extends the Postharvest Life of Water Bamboo Shoots Partly by Maintaining Mitochondrial Structure and Energy Metabolism

Harvested water bamboo shoots can be stored for only a few days before they lose weight and become soft. Nitrogen oxide (NO) and modified atmosphere packaging (MAP) have previously been used to prolong horticultural crop storage. In the present study, we analyzed the joint effect of these two methods on extending the postharvest quality of water bamboo shoots. Water bamboo shoots were treated with (1) 30 μL L⁻¹ NO, (2) MAP, and (3) a combination of NO and MAP. The NO treatment delayed the softness and weight loss through maintaining the integrity of the mitochondrial ultrastructure and enhancing the ATP level by activating the expressions and activities of succinic dehydrogenase, malic acid dehydrogenase, and cytochrome oxidase. MAP improved the effect of NO on the mitochondrial energy metabolism. These results indicate that NO and MAP treatments are effective at suppressing the quality deterioration of water bamboo shoots, MAP improves the effect of NO in extending postharvest life, and NO may be the main effective factor in the combination of NO and MAP.     

EDTA-2Na对磷酸二氢铵连续稳态结晶过程的影响

针对目前工业上湿法磷酸生产高纯度磷酸二氢铵(MAP)过程中磷收率低、结晶母液利用困难以及晶体中金属离子含量高等问题,本研究提出螯合法生产高纯度MAP新工艺。在MAP结晶过程中加入螯合剂EDTA-2Na,螯合杂质金属离子,从而降低MAP晶体中杂质含量,提高MAP纯度。采用聚焦光束反射测量仪(FBRM)在线颗粒监测技术以及OptiMax全自动反应器的精确控温模块测定了溶解度和介稳区宽度等数据,分析了EDTA-2Na对MAP晶体的弦长分布、形貌和晶胞参数等的影响,系统研究了在生产过程中EDTA-2Na对MAP连续稳态结晶过程的影响。     

Repeated use of MgNH4PO4·6H2O residues for ammonium removal by acid dipping

A novel process was developed to repeatedly utilize MgNH₄PO₄·₆H₂O (MAP) for ammonium removal from wastewater by releasing ammonium in MAP through acid dipping. In acid solutions, ammonium can be released to solution from MAP while MAP was transformed to MgHPO₄, which can be used to remove ammonium again. Ammonium-N concentration in acid solutions increased with the decreasing pH and increasing temperature, up to 3.27× 10⁴ mg/1 at 60°C and pH 4.8. MAP also dissolved into acid solutions when transformation to MgHPO₄·N:P, indicating the ratio of MAP transformation to MAP dissolution, was maximum at pH 6.0 and increased with the temperature. N:P was up to 38.8 at 60°C and pH 6.0. Recycling experiments were done. Ammonium-N in effluents was lower than 20 mg/l in the first five cycles, which indicates the feasibility of this process. XRD spectra also validate the transformation between MAP and MgHPO₄.     

Dynamic rheological behavior and mechanical properties of PVC/CPE/MAP–POSS nanocomposites

Poly(vinyl chloride)/chlorinated polyethylene (PVC/CPE)/methylacryloylpropyl‐containing polyhedral oligomeric silsesquioxane (MAP–POSS) nanocomposites are prepared. The plastic behavior and dynamic rheological behavior of PVC/CPE/MAP–POSS are investigated. The influences of composition on dynamic storage modulus G′, loss modulus G″, and complex viscosity η* of PVC/CPE/MAP–POSS melts are discussed. The dynamic mechanical properties, mechanical properties, and morphology are determined. The results show that both plastic time and balance torque of the nanocomposites decrease, but the G′, G″, and η* all increase with increasing MAP–POSS content. The maximum value of the dynamic mechanical loss tan δ decreases and elasticity increases when MAP–POSS is added. The impact strength of the nanocomposites increases with increasing MAP–POSS content and has the best value at 10% content of MAP–POSS, which is 5.38 kJ/m² higher than that of the blend without MAP–POSS. The MAP–POSS can be used as an efficient process aid and impact aid for the PVC/CPE blend. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013     

MAP料浆二次氨化法生产DAP产品品级的核算

使用稀磷酸采用料浆浓缩法生产磷酸一铵(MAP)对磷酸的杂质含量和品位要求大大降低,从而放宽了磷矿品位的要求。如果能够在现有料浆浓缩法生产MAP装置的基础上进行二次氨化生产出磷酸二铵(DAP),则可以拓宽现有MAP装置的产品品种,更加适应市场需求、提高经济效益。