高径厚比云母氧化铁的研制及其应用研究

选择国内多个氧化铁矿山中2个有一定代表性的云母氧化铁矿石类型，采用先进的生产工艺制得高径厚比的云母氧化铁，其理化性能测试指标高于国内外标准。应用实验结果表明，其防腐性能优于国内现用的云母氧化铁。选择合理的制备工艺，可以用云母氧化铁矿石生产出满足涂料生产需要的优质云母氧化铁。     

福建硬质绢云母在釉面砖中的应用

以福建丰富而优质价低的硬质绢云母为主要原料,填加适当的其它原料,通过系列配方试验,研制出硬质绢云母用量大、烧成温度低、烧成温度范围宽并且性能优良的白坯釉面砖制品。     

可加工氟云母玻璃陶瓷研究进展

可加工氟云母玻璃陶瓷是一种新型的结构材料,可用普通的金属刀具进行机械加工,自问世以来一直是陶瓷材料领域的一个研究热点.传统的可加工氟云母玻璃陶瓷中的主晶相是氟金云母和四硅氟云母,近年来又开发出钡云母、钙云母、锂云母和复相氟云母等新型的氟云母玻璃陶瓷,本文综述了近年来国内外在这方面的研究进展.     

云母薄片表面TiO2沉积过程的研究

为了使二氧化钛粒子按预期的结果沉积在云母薄片上，制得优质云母钛珠光颜料，通过比较二氧化钛晶核的形成和生长的方式，研究了云母薄片表面TiO2的沉积过程。讨论了各种反应条件对二氧化钛包膜的影响。     

云母玻璃的生产性能及用途

随着电气工业的飞速发展出现了一种崭新的优质绝缘材料——云母玻璃。这是一种由高品位的粉云母和特种电工玻璃混合制成的具有热塑特性的新型无机绝缘材料。这种材料就其性质来说类似陶瓷;而它的良好的热塑成型性能又类似塑料,所以又称为“陶瓷塑料”。 云母玻璃具有高的机械强度和一定的韧性,允许作切、割、刨、钻、铣、车等机械加工。可     

福建硬质绢云母在釉面砖中的应用

以福建丰富而优质价低的硬质绢云母为主要原料，填加适当的其它原料，通过系列配方试验，研制出硬质绢云母用量大，烧成温度低。烧成温度范围宽并且性能优良的白坯釉面砖制品。     

PA-6/云母复合材料性能研究

采用熔融共混法制备出了尼龙-6/云母复合材料,研究了云母的加入量对复合材料力学性能的影响.结果表明:随着云母最的增加,尼龙-6/云母复合材料的冲击强度和拉伸强度均呈现出先增加后降低的趋势,而弯曲模量呈增加趋势;云母的加入有助于提高PA-6基体的热稳定性.     

绢云母粘土——一类值得开发利用的窑具原料

绢云母粘土———一类值得开发利用的窑具原料沈继耀余壹波（天津大学材料科学与工程系３０００７２）合肥水泥厂２３００１１）早在八十年代初国外已经有意识地利用含有一定Ｋ２Ｏ的绢云母粘土生产诸如优质窑具及具有针柱状莫来石交织网织结构的“Ｍｏｌｏｃｈｉｔｅ”熟...     

正交法优化锂云母中钾的提取条件

采用正交法优化了锂云母中钾的提取条件.以100 g锂云母提取K2O的量为指标,采用火焰原子吸收光谱进行检测,考察了硫酸质量分数、反应时间和液固质量比3个主要因素对从锂云母中溶出钾的影响.通过正交实验确定锂云母中钾的最佳提取条件为:硫酸质量分数40％、反应时间8h、液固质量比2.5:1(g:g).     

含苦闪橄榄岩耐火材料在盛钢桶中的试用

圣彼得堡耐火材料研究设计院等单位完成的苦闪橄榄岩的技术研究表明,利用新的原料资源——由科夫多尔斯克蛭石-琥珀云母矿剥离出的再沉积风化壳的苦闪橄榄岩,生产优质硅酸镁耐火材料,用于黑色和有色冶金设备是有前途和经济合理的。研究确定,毗连现有采矿场的矿体由苦闪橄榄岩构成,表面被一层厚     

Molecular beam growth of micrometer-size graphene on mica

We demonstrate molecular beam growth of graphene on biotite mica substrates at temperatures below 1000 °C. As indicated by optical and atomic force microscopy, evaporation of carbon from a high purity solid-state source onto biotite surface results in the formation of single-, bi-, and multilayer graphene with size in the micrometer regime. It is shown that the graphene grown directly on mica surface is of very high crystalline quality with the defect density below the threshold detectable by Raman spectroscopy. The interaction between graphene and the mica substrate is studied by comparison of the Raman spectroscopy and atomic force microscopy data with the corresponding results obtained for graphene flakes mechanically exfoliated onto biotite substrates. Experimental insights are combined with density functional theory calculations to propose a model for the initial stage of the van der Waals growth of graphene on mica surfaces. This work provides hints on how the direct growth of high quality graphene on insulators can be realized in general without exceeding the thermal budget limitations of Si technologies.     

我国云母钛珠光颜料质量差距及改进措施

通过国产和国外云母钛珠光颜料产品的质量分析和比较，阐述了国产云母钛珠光颜料与国外同类产品在光泽、颜色、湿润性和分散性４个方面的差距。从云母薄片的制造、分级、包膜技术和颜料表面处理等方面，探讨改进国产珠光颜料质量的措施。     

丙烯酸聚氨酯涂料的研制

采用多羟基丙烯酸树脂作为羟基组分,ＨＤＩ缩二脲多异氰酸酯作为固化剂,配制成丙烯酸聚氨酯摩托车涂料。该涂料既保持了丙烯酸涂料优异的硬度、丰满度、光泽、耐候性和耐化学品性,又具有良好的附着力、柔韧性和耐磨性。介绍了该涂料的配方及其配制。比较了几种摩托车涂料的性能。讨论了涂料用原料的选择     

明快色调的导电云母颜料

以德国默克公司的导电云母颜料产品为例,介绍了导电云母颜料的结构与性能,以及在导电涂料中的应用     

Study of the mechanical properties of mica-filled polypropylene-based GMT composite

Mica-filled polypropylene (PP)-based GMT (PP–mica–GMT) was prepared by a double-belt press and its mechanical properties were tested. The effect of the mica content on the mechanical properties of PP–mica–GMT was investigated. It was found that with a lower mica content in matrix the tensile and flexural properties were improved; however, at a high mica content level, the tensile and flexural properties decreased. With respect to the impact strength, there is a maximum value at an approximate 20 wt % mica content level. These results were attributed to the influence of mica on fiber–matrix adhesion. It is most likely that low mica content enhances fiber–matrix adhesion; however, high mica content is unfavorable to fiber–matrix adhesion. Maleic anhydride-grafted PP (MPP) was used to enhance the fiber–matrix adhesion at a higher mica loading level for PP–mica–GMT. With increasing MPP content in the matrix, the tensile properties were significantly improved, whereas the Izod impact strength decreased. In addition, with 5 wt % MPP and 40 wt % mica in the PP matrix formulation, the effect of the mica particle size and glass fiber content on the mechanical properties of PP–mica–GMT was investigated. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 2719–2728, 2001     

硅烷基聚合物陶瓷化研究进展

综述了硅氧烷基聚合物陶瓷化的研究进展,介绍了硅灰石、云母以及云母混合物3种瓷化体系的配方及各自的陶瓷化效果。硅灰石在提高复合材料力学性能方面效果理想;云母应用于电缆材料时易于达到电性能和力学性能的要求;而使用无机填料与云母的混合物可以使陶瓷化产物有更好的强度,无机填料的存在很大程度上使烧结瓷化产物更加致密。最后阐述了瓷化体系的应用领域以及今后的发展方向。     

Elastomer monolayers adsorbed on mica surfaces by nitroxide-mediated polymerisation

We reported the first synthesis of Poly(n-butyl acrylate) by in situ nitroxide-mediated polymerisation from the surface of mica while preserving its lamellar structure. To obtain this polymer adsorbed to mica surface, a free radical initiator 2,2′-azobis(isobutyramidine hydrochloride) (AIBA) was attached by ion exchange to the surface of mica, and the resulting was used as a initiator to polymerise butyl acrylate. The kinetic studies show that the initiator adsorbed to mica surface successfully initiated the radical polymerisation of butyl acrylate. Adsorbed polymer was indeed obtained, in different amounts depending on reaction time, the XRD patterns of resulting products indicate that the polymer chains did not intercalate the aluminosilicate layers, as expected.     

Hydrophobic coating of mica by piranha solution activation,silanization grafting,and copolymerization with acrylate monomers

Hydrophobic mica particles were prepared by piranha solution activation, silanization, and copolymerization with acrylate monomers. Its surface morphology, hydrophilic properties, and thermogravimetric analysis changed differently in comparison with those of pristine mica. Scanning electron microscopy (SEM) showed that the modified (001) mica surface changed from flat to coarse. Thermogravimetric curves demonstrated that silane coupling agents and the grafted polymer were anchored on the modified‐mica surface. The alternating surface polarity state was verified by different dispersion performances in the solvents. SEM images showed that the polypropylene (PP)/modified‐mica composites had a better quality compatibility than the PP/untreated‐mica composites. The PP/polymer‐grafted‐mica composites had improved mechanical properties, including stretching, tension, and impact properties. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44985.     

绢云母粉在轮胎胶料中的应用研究

对绢云母粉在轮胎胎侧胶和帘布胶中的应用进行小配合,大配合及成品性能检测。结果表明,绢云母粉活化后对胶料的老化性能,疲劳性能,半成品粘合强度,H抽出力等性能有所改善,但焦烧时间和正硫化时间缩短;用添加10份活性绢云母粉的胎侧胶和内层帘布胶制得的轮胎成品性能达到国家标准要求。     

Synthesis of Titania Pillared Mica in Aqueous Solution of Acetic Acid

The preparation of TiO₂-pillared mica was carried out in a CH₃COOH aqueous solution. Titanium ion species were obtained by an addition of Ti(C₃H₇O₄ to an aqueous solution of CH₃COOH and by subsequent aging of the solution for a prescribed time followed by intercalation of these ionic species into the interlayers of mica. Ti⁴⁺-intercalated mica was thus obtained by ion exchange. After the sample was calcined at 773 K in air, TiO₂-pillared mica was produced. The pillaring of TiO₂ in the interlayer of mica was confirmed by XPS. The surface area TiO₂-pillared mica was about 100 times larger than that of mica alone. The basal spacings of the products heated above 523 K were in the range from 2.01 nm to 2.68 nm in the samples obtained under various conditions.