The emulsoid particle size and its distribution were determined by laser particle sizer . the composition changes of acr were inspected by ir , and the core - shell structure was observed by tem . the morphologyes of acr resin particles were inspected by polarization microscope at last 通过激光粒度分析仪对所合成的乳胶粒径及其分布进行了分析测试，借助于ir考察了所合成的acr的组成变化，并通过透射电镜对所合成的acr的核壳结构进行了验证，最后借助于偏光显微镜观察了破乳干燥后得到的acr粒子。
By means of sem , tem , laser scattered particle analyzer , etc . , the formation mechanism of ultrafine sio2 particle was studied . it was found that at the initial stage , the sio2 particle consisted of some minicrystal , but after the initial stage the sio2 particle was formed by some soluble aggregated substance growing on the surface of the early particle 运用扫描电镜、透射电镜、激光粒度分析仪等检测手段，探讨了体系中超细二氧化硅颗粒的形成机理和过程，指出超细二氧化硅粒子前期是由体系中的微晶核组成，中后期则由体系中的可溶性缩合物在其表面生长而成。
It focuses on the theory of the mineral functional materials " improving the anti - chloride permeability and the chloride binding . the main achievements of this article include : 1 ) use the technology of xrd , sem , bet , laser particle size distributor etc to test the component , the construction , particle size distributor , specific surface etc of micro - silica , ultra - fined slag , high quality fly ash , meta - kaolin clay , four types of the mineral functional material , theoretically analysis the functions which the four mineral functional minerals act on cement concrete , namely pozzolanicity effect , filling effect , micro - aggregate effect , surface adsorption effect and so bring into play the affect of plastification , lowing of temperature , reinforcement , improvement of durability . base on this analysis we can conclude that the proper diameter of the mineral functional material is 5 m - 15 m , that is blain fineness 4500cm2 / g - 7500cm2 / g 本论文的主要成果包括以下几个方面： ( 1 )采用xrd 、 sem 、 bet 、激光粒度分析仪等多种测试手段，探明了以硅灰，超细磨粒化高炉矿渣，优质粉煤灰及偏高岭土超细粉等4种超细矿物功能材料的组成、结构、粒度分布、比表面积等基本性质；从理论上分析了矿物功能材料在混凝土中的4种效应，即火山灰效应、填充密实效应、微集料效应、表面吸附效应，并由此发挥出增塑、温峰削减(降热) ，增强及耐久性改善等作用；通过相关理论分析，推导出矿物功能材料的合理粒径范围在5 m 15 m ，即勃氏比表面积为4500cm ~ 2 g 7500cm ~ 2 g 。
On the basis of theory analysis , the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ) . the dc value was closely related to both particle concentration and surface area of sand clay simultaneously . the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients . then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0 . 981 . so the model of automatical control system of water treatment plant was established using the formula 应用透光率脉动检测技术和光散射颗粒粒度分析仪( pda ) ，通过理论分析，将pda的输出信号之一? ?平均透光强度(对应于dc值)作为原水的特性表征参数， dc值可以同时反映颗粒浓度和比表面积因素的影响，试验结果证明， dc值与单位体积水中泥沙颗粒总表面积s _ p之间具有很好的幂函数关系： dc = cs _ p ~ d ，式中c 、 d为经验系数，进而得到了以dc值为参数的高分子絮凝剂投药量公式： d = f ( dc ) = e ( dc ) ~ f ，式中： e 、 f为经验系数，平均相关系数达0 . 981 ，利用所建立的公式，建立了前馈? ?后馈联合控制的在线自动投药模型。
In the process of making 95 alumina ceramics , selected five kinds of alumina powder and studied the influence of different alumina powder on the sintering properties and mechanic properties of 95 alumina ceramics , moreover , selected the most agreeable alumina powder according to the apparatus for granularity analysis and scanning electron microscope ( sem ) . the influence of different sintering temperature on the sintering mechanic properties , the microstructure of 95 alumina ceramics were investigated by adding y2o3 and la2o3 as two kinds of rare earth additives in alumina ceramics . the results indicated that the additive of la2o3 could improve the properties of 95 alumina ceramics more effectively and could get fine grain and tabular alumina that can enhance the strength of the material 选用了五种al2o3粉料，研究了其对95al2o3瓷烧结性能和力学性能的影响，并结合粒度分析仪sem对al2o3粉料进行优选；通过添加y2o3 、 la2o3两种稀土添加剂，研究了不同烧成温度对95al2o3瓷的烧结性能、力学性能及显微结构等的影响，结果表明：添加la2o3可以有效提高95氧化铝瓷烧结性能和力学性能，形成细晶和板状氧化铝瓷的显微结构；通过对比不同氧化铝粉料制备氧化铝瓷烧成温度曲线与烧结性能的关系，确定最佳的烧成温度范围为1570 ~ 1600 。
