福建硬质绢云母表面化学改性的研究

采用超细粉碎和表面化学改性方法对硬质绢云母进行改性，研究表面改性的机理，建立了一整套的改性工艺，制备出应用性能和价值得到较大提高的改性硬质绢云母超细粉。     

矿物的深加工及硅橡胶增强填料的制备

以天然矿物滑石,石英,粒状硅灰石和针状硅灰石为原料,经超细粉碎,表面化学改性和机械力化学改性等三种工艺方法进行深加工,制备出具体优良性的超细粉体材料－硅橡胶增强填料,其性能接近气相白碳黑,可部分代替扫描碳黑可用于硅橡胶。     

超细重质碳酸钙粉表面改性与充填聚丙烯试验研究

重质碳酸钙粉是一种普通的无机非金属填料,经过超细粉碎和改性,可以将其变成一种性能优越的功能填料。本文选用鄂西生产的超细重质碳酸钙粉为试验物,对其表面改性的试验方法、改性剂选择及用量、改性条件及改性效果等方面进行了一定探讨。分别采用了表面化学包覆法和干法和湿法两种改性方法对超细重质碳酸钙进行了改性。用表面改性偶联剂中的金属酯偶联剂和硅烷偶联剂,按不同剂量进行不同条件多组改性实验,使超细重质碳酸钙粉由     

硬脂酸/绢云母复合粉体FTIR表征及其对环氧树脂增强作用

应用丌1R检测经超音速气流粉碎一活化后,硬脂酸/绢云母复合粉体表面特征,实验结果表明,在波数为1576 cm-1和1546 cm-1出现新的吸收峰,认为是羧酸盐羧酸根负离子R-COO中C=O伸缩振动吸收峰.短碳纤维/绢云母/环氧树脂复合材料力学性能检测结果表明:改性绢云母的补强效果明显高于未改性绢云母.     

聚丙烯酸盐/绢云母超吸水性复合材料的表征

通过丙烯酸与绢云母超细粉的接技共聚，制备出吸水率为1100倍的超吸水性复合材料。通过X—射线、傅立叶红外光谱、热分析、偏光显微镜等对样品进行表正和分析。结果表明，丙烯酸与绢云母在接技共聚过程中绢云母的结构没有发生变化，但分散度提高；绢云母粉体OH基团与丙烯酸COO基团发生了某种形式的键合或结合，形成了一种网络结构；复合材料的脱水温度提高，表明与水分子的结合能力增强。     

高纯超细电子级石英粉的制备技术综述

随着塑料、橡胶、涂料、电子及其它高科技产品对高品位超细硅石原料需求量的增加,近年来采用脉石英、石英岩制备高纯石英粉的加工技术取得了很大进展。在热力破碎技术、粉碎机械选型、超细石英等的加工工艺、助磨剂研制等方面都探索出一些新的技术和方法。在石英粉中铁、铝等杂质脱除的选矿提纯技术以及石英粉表面改性等相关技术也取得了显著成效。     

硅灰石质白色颜料的研制

针对硅灰石作为白色颜料的主要不利因素，对其进行超细粉碎和表面化学改性处理，改进硅灰石粉体粒度、粉体表面组成和表面结构，提高粉体的白度和折射率，进而提高遮盖力。改性后的硅灰石超细粉体具有良好的高级白色颜料性能。     

硅烷偶联剂-PMMA复合接枝包覆绢云母及其改性机理

通过硅烷偶联剂-PMMA复合接枝聚合在超细绢云母粉体表面接枝上聚合物,得到核壳型PMMA/绢云母。经红外光谱(IR)分析知其改性机理为:硅烷偶联剂KH570与超细绢云母表面的羟基发生化学键合而实现预先接枝不饱和基团;在适当的聚合条件下,粉体表面的乙烯基与甲基丙烯酸甲酯单体共聚合,得到核壳型PMMA/绢云母。用热分析(DSC-TG)方法研究了偶联条件及共聚合的条件,得出核壳型PMMA/绢云母的制备条件是:偶联剂浓度7.5%,偶联温度70℃,偶联时间3h;单体用量12.5mL/g,引发剂用量0.015g/mL,温度80℃,时间9h。增加聚合度可以得到绢云母/PMMA复合粉,透射电镜(TEM)观察知绢云母在聚合物中高度分散无团聚。     

重质碳酸钙干法超细与改性一体化工艺研究

在气流粉碎机中对重质碳酸钙进行干法超细与改性一体化工艺研究，通过控制改性剂种类，改性剂用量，给料粒度，给料速度，产品活化率达97％，吸油率16．20％，20天吸水率7．01％，白度91．5，粒度（d50)8.0um，碳酸钙的吸水和吸油率的均降低，对超细与改性一体化机理进行了讨论。     

绢云母片岩粗粒料改性试验研究

绢云母片岩属极软岩,强度低,直接作为路基填料难以压实,易造成路基沉陷、路面开裂等不良工程现象。通过对绢云母片岩及其4种改性方案进行表面振动压实试验、室内重型击实试验、室内CBR试验以及回弹模量试验研究,探讨绢云母片岩经改性后用作高速公路路基填料的适用性。试验表明,绢云母片岩最大干密度采用室内重型击实与表面振动压实试验结果相差较大,采用表面振动压实时为1.92 g/cm3,采用室内重型击实时为2.01 g/cm3。主要原因是由于绢云母片岩颗粒破碎的结果。绢云母片岩及其4种改性粗粒土的在最优含水率附近的较宽范围内的变动对压实效果的影响不大,有利于填料的压实。绢云母片岩的回弹模量E较低,小于32 MPa,经改性后的土料的回弹模量均有显著提高,均达到50 MPa以上。添加20%红砂岩和20%黏性土的试料CBR值均只有3.7,添加3%水泥和5%水泥的试料CBR值上升明显。绢云母片岩经添加3%、5%的水泥化学改性后可用于高速公路上路堤及路床填筑。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)