可环境消纳塑料助剂--稀土类光敏剂的研究与应用

提出了"可环境消纳塑料"和"可环境消纳塑料助剂"的概念,对可环境消纳塑料助剂之一--稀土类光敏剂研究与应用进行较系统的综述,初步探讨了脂肪族稀土配合物和芳香族稀土配合物的光敏化效果,实验结果表明,脂肪族稀土配合物具有光诱导后继续氧化降解的功能,这将为开拓稀土配合物新的应用领域提供技术支撑.     

无机粉体改性塑料环境友好材料的研发方向

本文就无机粉体改性材料环境友好材料的定义及研发方向提出作者的见解，通过自身的科研，从环境友好材料的角度系统研究无机粉体改性塑料环境友好材料的综合性能，论证了无机粉体改性材料环境友好材料是一类经济性、功能性和环境协调性有机统一的材料，探讨了“可环境消纳助剂”可强化无机粉体改性塑料的环境消纳的特性；重点介绍了无机粉体的筛选原则及无机粉体表面改性技术的最新进展，认为无机粉体表面原位组合化学改性和具有配位功能的稀土偶联剂可有效地提高无机粉体改性塑料的刚性和韧性；呼吸加快推进提高这一新型改性材料产业化的技术水平，将“好的价格性能比”和具有可环境消纳特性的“光钙型多功能环境友好塑料”作为无机粉体改性环境友好材料的发展重点，同时提出“光钙型多功能环境友好材料”是狭义上的无机粉体改性塑料环境友好塑料，该技术产品已成为治理塑料“白色污染”的主流产品之一。     

建筑门窗、幕墙聚丙烯环保型保护膜的研制

筛选出一种具有多种功能的稀土配合物，研制出掺杂稀土配合物的含滑石粉的聚丙烯（PP）可环境消纳专用树脂，采用该专用树脂吹制的PP膜经特殊设备按实用新型专利的方法制成了建筑门窗、幕墙环保型保护膜。实验结果表明：所研制的建筑门窗、幕墙环保型保护膜在使用期可防止建筑装饰材料不受损伤，又能起到防伪的功能，使用后既可回收再利用，当进入垃圾系统时又具有可环境消纳功能，其综合经济价值较高。     

可环境消纳塑料树脂问世

福建师范大学化学与材料学院与福建省改性塑料技术开发基地采用未经任何处理的树脂粉末,根据不同的材料和用途,研制出不同牌号的可环境消纳塑料专用树脂,并以这种树脂为原材料开发出一系列可环境消纳塑料制品。     

环境友好塑料材料的研制及开发动态

从塑料与环保协调发展的角度出发,论述了环境友好塑料材料的定义及研究开发方向,探讨了使塑料材料成为耐用的、价格性能比好的、易于清洁生产的、可回收利用和可环境消纳的方法和途径;总结了目前国内外降解塑料的开发动态,着重介绍了几种可提高降解塑料的降解可控性、彻底性和扩宽应用领域的新技术;首次报道了可环境消纳专用树脂的技术特点和市场前景,强调了开发可环境消纳塑料必须适应垃圾的可堆肥、可焚烧、可降解的综合处理方式.     

环境友好塑料材料的开发应用

从塑料与环保协调发展的角度出发，论述了环境友好塑料材料的定义及研究开发方向，探讨了使塑料材料成为耐用的，好的价格性能比的，易于清洁生产的，可回收利用和可环境消纳的方法和途径。总结了目前国内外降解塑料的开发动态，强调了开发的可环境消纳塑料必须适应垃圾的可堆肥，可焚烧，可降解的综合处理方式，着重介绍了几种可提高降解塑料的降解可控性，彻底性和扩宽应用领域的新技术，首次报道了可环境消纳专用树脂的技术特点和市场前景。     

四元羧酸稀土配合物的合成与表征

在水溶液中合成了铕和铽的四元羧酸稀土配合物。通过红外光谱,元素分析,热分析及荧光光谱,对其组成及其荧光性能进行了表征。结果表明两种稀土配合物具有较好的荧光性质。     

无机粉体改性塑料环境友好材料的环境协调性研究

从环境友好材料的角度系统研究无机粉体改性塑料环境友好材料的综合性能,论证了无机粉体改性塑料环境友好材料是一类经济性、功能性和环境协调性有机统一的材料,探讨了"可环境消纳助剂"可强化无机粉体改性塑料的环境消纳特性;重点介绍了无机粉体的筛选原则及环境协调性,总结了无机粉体改性塑料环境友好材料仍然存在的缺陷及今后的对策,强调要加快推进提高这一新型改性塑料材料产业化的技术水平;明确了"光钙型多功能环境友好塑料"是狭义上的无机粉体改性塑料环境友好塑料,该技术产品已成为治理塑料"白色污染"的主流产品之一;提出今后"开发性价比高"的无机粉体改性塑料和"具有可环境消纳特性"的"光钙型多功能环境友好塑料"将作为无机粉体改性塑料环境友好材料发展重点的观点。     

可环境消纳的专用塑料

福建师范大学与福建省改性塑料技术开发基地合作,采用未经任何处理的树脂粉末,根据不同的材料和用途,研制出多种牌号的可环境消纳专用树脂,并以这种树脂为原料开发出一系列可环境消纳的塑料制品。据介绍,可环境消纳聚烯烃塑料是一种新型的环保材料。制定有统一的环保标准,根据我国垃圾的处理工     

无机粉体改性塑料环境友好材料的环境协调性研究

从环境友好材料的角度系统研究无机粉体改性塑料环境友好材料的综合性能,论证了无机物体改性塑料环境友好材料是一类经济性、功能性和环境协调性有机统一的材料,探讨了"可环境消纳助剂"可强化无机粉体改性塑料的环境消纳特性;重点介绍了无机粉体的筛选原则及环境协调性,总结了无机粉体改性塑料环境友好材料仍然存在的缺陷及今后的对策,强调要加快推进提高这一新型改性塑料材料产业化的技术水平;明确了"光钙型多动能环境友好塑料"是狭义上的无机粉体改性塑料环境友好塑料,该技术产品已成为治理塑料"白色污染"的主流产品之一;提出今后"开发性价比高"的无机粉体改性塑料和"具有可环境消纳特性"的"光钙型多功能环境友好塑料"将作为无机粉体改性塑料环境友好材料发展重点的观点。     

底座连接口特征参数对显示器后壳注塑质量的影响分析

在Moldflow分析软件的基础上,对显示器后壳进行仿真研究,以翘曲变形量为质量指标,结合控制变量法进行单因素变动实验,保持注射工艺参数不变,研究显示器后壳底座连接口对制品翘曲变形的影响.对数据进行图表分析,结果表明显示器后壳尺寸定位68.58 cm(27英寸)时,底座连接口选用圆形,连接口位置距离底边26 mm,尺寸...     

The role of the symmetry and the flexibility of the anion on the characteristics of the nanostructures and the viscosities of ionic liquids☆

The transport properties of ionic liquids (ILs) are crucial properties in view of their applications in electrochem-ical devices. One of the most important advantages of ILs is that their chemical–physical properties and conse-quently their bulk performances can be well tuned by optimizing the chemical structures of their ions. This will require elucidating the structural features of the ions that fundamentally determine the characteristics of the nanostructures and the viscosities of ILs. Here we showed for the first time that the“rigidity”, the order, and the compactness of the three-dimensional ionic networks generated by the anions and the cation head groups determine the formation and the sizes of the nanostructures in the apolar domains of ILs. We also found that the properties of ionic networks are governed by the conformational flexibility and the symmetry of the anion and/or the cation head group. The thermal stability of the nanostructures of ILs was shown to be con-trolled by the sensitivity of the conformational equilibrium of the anion to the change of temperature. We showed that the viscosity of ILs is strongly related to the symmetry and the flexibility of the constitute ions rather than to the size of the nanostructures of ILs. Therefore, the characteristics of the nanostructures and the viscosities of ILs, especially the thermal stability of the nanostructures, can be fine-tuned by tailoring the symmetry and the conformational flexibility of the anion.     

浅谈设备的性能与操作对胎面压出质量的影响

简要介绍了胎面压出的工作原理及工艺过程，对设备的配置及操作对胎面压出质量的影响进行了分析，并对压出过程中常见的质量缺陷、造成的原因以及解决措施提出了自己的见解。     

Investigation of the effects of fatty acids on the compressive strength of the concrete and the grindability of the cement

In cement industry, a great energy consumption has been observed during grinding of clinker. To reduce this consumption, some waste products have been used as grinding aids.In this investigation, the effects of sunflower oil (SO), oleic acid (OA), stearic acid (SA), myristic acid (MA) and lauric acid (LA) on the fineness and strength of the cement have been examined. These aids were added into clinker in certain ratios based on the cement clinker weight and the grinding has been done for a definite time at the same condition.All of the fatty acids used increased the fineness as compared with the cement without the grinding additives. SO and OA decreased the strength significantly, LA decreased it to a lesser extent and SA increased it definitely according to the common cement. But MA did not alter the strength of the cement as much as SA. In addition, the covering of the balls influences the grinding of cement clinker unfavourably.     

煤粉流动性对GSP气化炉气力输送的影响研究

针对GSP气化装置煤粉气力输送在试车阶段出现的煤粉锁斗下料不畅、发料罐输送性能不佳等问题,从原料煤性质和工业装置的改进方面出发,通过煤粉的流动性参数的测量与研究,分析出现上述工程问题可能的内在原因,并提出工业装置改进方法,为保证GSP煤粉气力输送工业装置的正常运行提供解决办法。     

关于建立火炸药安全数据库的探讨

由反映火炸药及其制品的危险性能和用于对它们的生产、储运系统进行安全评价数学模型出发,探讨了如何建立一个全面、实用的火炸药安全评估数据库。通过对此数据库内容、数据表示方法、数据搜索方法以及建立步骤的讨论,明确了该数据库的使用对象和主要功能。     

The effect of the length of the oxyethylene chain on the conductivity of the polyurethaneurea electrolyte

Polyurethaneureas (PUU), which were synthesized from 4,4′-diphenylmethane diisocyanate (MDI), poly(ethylene glycol) (PEG), and 3,5-diaminobanzoic acid (DABA), were used as polyelectrolytes in this study. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) were used to monitor the effect of the various kinds of PEG on the changes in morphology of PUU electrolytes corresponding to the concentration of lithium perchlorate (LiClO₄) dopants. The results of DSC and FT-IR indicate the Li⁺ ions coordinate with the soft and hard segments. Additionally, the crystallinity of the PEG soft segment and the ordered hydrogen-bonded urea carbonyl groups decreased with increasing salt concentration. Impedance spectroscopy (IS) measurements show that the PUU electrolyte with the high phase separation degree has the high ionic conductivity. The hard-segment T_g and the soft-segment T_m influence the conductivity behavior of polyelectrolytes with increasing measurement temperature.     

Effect of the drafting force on the strength of the bottom of the spinneret

In spinning basalt fibres, the drafting force is in the same range as in spinning of glass fibres. The effect of the drafting force can not be considered in the calculation for the strength and rigidity of the bottom of the spinneret. __________ Translated from Khimicheskie Volokna, No. 5, pp. 47–50, September–October, 2007.