汶南碱石在高档瓷中的应用

本文通过对汶南碱石与大同土、精选龙岩土理化性能的分析对比，总结出它既有硬质粘土的性状又有软质粘土性质的特点，用于高档骨质瓷和滑石瓷制作中，是既可增加泥料塑性又可提高干燥强度的理想原料。     

汶南碱石在高档瓷中的应用

本文通过对汉南碱石与大同土、精选龙岩上理化性能的分析对比,总结出它既有硬质粘土的性状又有软质粘土性质的特点,用于高档骨质瓷和滑石瓷制作中,是既可增加泥料塑性又可提高干燥强度的理想原料。     

新产品HZN-100(11)型井壁稳定剂

在钻井过程中要穿遇各种岩石,对不稳定性最敏感的岩石是页岩,页岩的主要成份是粘土,粘土又可概括地分为膨胀性粘土和非膨胀性粘土。膨胀性粘土的典型是蒙脱土,非膨胀性粘土的代表是尹利石。前者遇水易发生膨胀、分散引起地层大量造浆,后者在氢氧根存在下会促使其沿节理剥落进而导致井壁不稳定。采用某些化学品抑制泥浆中的水进入页岩是解决页岩水化问题的基本措施之一。此种井壁稳定剂即是一种有效地能够稳定井壁的泥浆处理     

防腐蚀涂料

题述防腐纳米复合涂料含聚脲、有机土和适当的添加剂，其适用于制备聚脲／粘土纳米复合物，用所述纳米复合涂料涂覆基材可大大降低基材的腐蚀率，     

环氧树脂/粘土纳米复合材料研究现状

描述了粘土的结构特征和有机化蒙脱土的制备，介绍了插层复合法的基本原理及其在环氧树脂／粘土纳米复合材料制备中的应用，以及近年来国内外环氧树脂／粘土纳米复合材料的研究现状。     

粘土原料用于陶瓷注浆泥料的开发模式研究

以黑泥粘土原料的开发为依据,确定高岭石类粘土原料开发模式为:首先将待开发黑泥粘土原料的物理化学性质与苏州土的物理化学性质进行分析比较,确定其为高岭石类粘土原料后再用该粘土原料代替苏州土并进行陶瓷注浆泥料配方设计.     

蒙脱土结构特性及在聚合物基纳米复合材料中的应用

对蒙脱土的晶层结构、分散性、流变性及表面修饰进行了系统的评述。蒙脱土片层含有Lewis酸点及过渡金属离子可用于烯类单体的催化聚合反应;自从丰田汽车公司使用尼龙 6／粘土纳米复合材料以来,蒙脱土(具有膨润性的粘土)在聚合物基纳米复合材料中的研究和应用正越来越受到世人的关注。对蒙脱土／聚合物纳米复合材料的制备方法及其进展也进行了综述。     

吉林宝仁球粘土在卫生陶瓷中的应用

用吉林宝仁球粘土代替部分软质粘土进行卫生陶瓷坯体实验，并与加入相同量的苏州土配方进行对比。分别测定了各配方的泥浆性能、干燥性能和烧后试样的性能。实验结果表明：在卫生陶瓷坯料中加入3％～9％的吉林宝仁球粘土，制备的泥浆性能优良，满足卫生陶瓷生产工艺要求；由于吉林宝仁球粘土粒度小、比表面积大，其高分散性可赋予半成品良好的强度；同时高分散性促进制品的固相烧结，赋予产品良好的机械性能。吉林宝仁球粘土加入量在6％时，可以生产出物理性能优良的卫生陶瓷产品。     

陶瓷压力注浆工艺对球土的要求

球土的概念起初仅是指将粘土在处理和运输中做成球状,而不是指其它任何的工艺技术参数。今天,这一名称是指那些具有较细颗粒、矿物成份是高岭石在1200℃氧化气氛下烧成呈浅色或白色的粘土,其中无序高岭石部分使粘土具有可塑性。均匀一致而且适用于陶瓷工业的球土主要有四个产区：英国的Devon和Dorset地区;美国肯塔基、田纳西和德克萨斯地区,欧州的中部和泰国的北部地区。德国著名的Westerwald塑性粘土不属于球土范围,因为其主要的矿物成份是伊利石而不是高岭石。然而从工业生产的角度来看,球上和塑性粘土经常作为同义词。在美国,…     

黄（红,黑）土粉煤灰彩釉砖的研制

黄（红、黑）土粉煤灰彩釉砖的研制张金升，冯刚，吴卫华（济南市建筑材料设计研究院）黄（红、黑）土本身杂质含量多，化学成分不稳定，尤其氧化铝含量仅１０～１４％，属非陶土类粘土。本研究以黄土、红土、黑土类粘土与粉煤灰为主要原料，外加适宜助剂，进行合理配方，...     

焦宝石基喷涂料的研制

以焦宝石、叶蜡石、硅微粉和铝酸钙水泥为原料制备了焦宝石基喷涂料,对比分析了焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的物理性能。结果表明:焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的性能相当,但是该喷涂料成本较低,可部分替代焦宝石-铝矾土基喷涂料修补高炉的衬里,使用效果良好。     

火箭发射台用焦宝石基涂抹料的研制与应用

以焦宝石、堇青石、硅微粉和高铝水泥为原料,制备出一种用于火箭发射台的焦宝石基涂抹料.结果表明:焦宝石基涂抹料具有良好的物理性能,以及良好的耐烧蚀性能和隔热性能,并且满足沿海火箭发射基地高温高湿、高盐雾、高紫外线照射等特殊自然环境的需求.将所研制的焦宝石基涂抹料在国内某火箭发射台上进行使用,使用结果表明:该焦宝石基涂抹料能够承受火箭发射时的燃气流冲刷,涂层的脱落面积不超过总涂覆面积的5%.所研制的焦宝石基涂抹料可以在火箭发射台上使用,并且效果良好,起到了保护火箭发射台的作用.     

The Effect of the Structure of Clay and Clay Modifier on Polystyrene-Clay Nanocomposite Morphology: A Review

Nanocomposites formation brings about an enhancement of many properties for polymers. They have attracted interests since they attain significant properties with far less clay content. It is generally assumed that exfoliation nanocomposites are preferred for the greatest increases in properties, but that is not correct in flame retardency properties. In this paper the effects of different types of clays and clay modifiers on final morphology of PS/clay nanocomposites were reviewed. Clay charge density and length, bulk, polarity, functional groups and polymerizability of the clay modifier are very significant in their efficiency and final morphology of PS/Clay nanocomposite.     

MISSOURI HARD FLINT CLAY FIRE BRICK1

The hard flint clay obtained in the diaspore pits of Missouri, which has exceedingly low bonding properties and high shrinkage, but a P.C.E. value of cone 34, with the use of as low a percentage of flint clay grog as 20%, can be bonded into a strong brick, free of physical defects and of super-refractory quality. Excessively high forming pressure is not required. A small addition of bentonite adds materially in bonding the clay. The results of spall, hot load, cold compression, porosity, shrinkage, and reheat tests are presented.     

铝酸钙水泥对焦宝石基喷涂料性能的影响

以焦宝石颗粒及细粉为主要原料，铝酸钙水泥为结合系统。分别研究了不同铝酸钙水泥含量对焦宝石基喷涂料性能的影响。结果表明．焦宝石基喷涂料的抗折强度随着铝酸钙水泥含量的增加呈上升趋势。但经过600℃、1000℃和1300℃烧结后的焦宝石基喷涂料的耐压强度随着铝酸钙水泥含量的增加呈先增加后减小的趋势。     

黏土/天然橡胶纳米复合材料的制备及性能

利用乳液插层法制备了黏土／天然橡胶纳米复合材料,研究了该复合材料的力学性能、应力应变行为、耐磨性、气体阻隔性和耐老化性能。结果表明,黏土／天然橡胶纳米复合材料与高耐磨炭黑(N330)、白炭黑增强橡胶相比,邵尔A型硬度、定伸应力和撕裂强度较高,拉伸强度相当。黏土、N330以及白炭黑对天然橡胶的拉伸结晶有影响,填料用量对材料拉伸强度的影响存在最佳值。黏土／天然橡胶纳米复合材料具有良好的耐磨性、气体阻隔性和耐老化性能。     

THE FIRE BRICK MATERIALS OF PENNSYLVANIA1

Pennsylvania produces over 40% of all clay fire brick and over 70% of all silica fire brick made in the United States. In 1920 Pennsylvania produced and sold fire clay worth nearly two million, fire clay brick worth nearly twenty-two million, and silica brick worth over ten and one-half million, a total of thirty-four and one-half million dollars worth of brick and clay. Three kinds of material are used for the manufacture of this fire brick. (1) Soft fire clay from one horizon northwest of Pittsburgh and from the “main clay” of the Pittsburgh bed south of Pittsburgh. (2) Hard or flint clay which occurs in many counties of the State. The hard clays are described as occurring at a limited number of horizons in the Allegheny formation or “Lower Productive Coal Measures,” as being irregular in thickness and distribution, ranging from a feather-edge to fifteen or twenty feet in thickness and being of two types, “block” clay in which the structure is homogeneous, and “nodular” clay in which the structure is gnarly or knotty. Brief reference is made to the principal flint clay deposits of the State. (3) The third source of material for fire brick is ganister rock, a pure white quartzite occurring as a massive bedded sandstone at the base of the Silurian series and exposed abundantly in the zig-zag ridges across the central part of the State and as a similar white quartzite at the base of the Cambrian in the southeastern part of the State. A series of tests of flint clays and of soft clays used to mix with the flint clays is appended. These are derived mainly from Clearfield County which is the leading flint clay county.     

Fibre reinforced nanocomposites: Mechanical properties of PA6/clay and glass fibre/PA6/clay nanocomposites

In this paper, the effect of two different reinforcements: clay at the nanoscale and glass fibres at the micro-scale, on the mechanical properties of PA/clay and GF/PA/clay are studied. The Halpin-Tsai model is used to predict the modulus of PA/Clay and GF/PA/Clay, both of which are influenced by two factors: reinforcement shape and volume fraction. The relationships between the modulus and reinforcement shape and volume fraction are discussed. Tensile modulus, measured in tensile tests is used to fit the Halpin-Tsai models. The results demonstrate a synergy between the reinforcements at the two different scales.     

A STUDY OF THE EFFECT OF THE SUBSTITUTION OF CALCINED BALL CLAY FOR NONPLASTIC IN PORCELAIN AND TALC BODIES

It has been the purpose of this study to determine the effect of the substitution of calcined ball clay for flint in certain type bodies. Complete data on the physical properties of these bodies has been obtained, including electrical resistivity up to 980°C. A substitution of calcined ball clay for a portion of the talc in a type talc body has also been made.     

Preparation of nanocomposites by melt compounding polylactic acid/polyamide 12/organoclay at different screw rotating speeds using a twin screw extruder

This study analyzes the effect of different screw rotating speeds on the clay dispersion and mechanical properties of nanocomposites prepared by melt compounding polylactic acid (PLA) with an organoclay in a co‐rotating twin screw extruder. Polyamide 12 (PA12) was used as an additive. Two different screw rotating speeds, 65 rpm and 150 rpm, were used in this study. According to the tensile strength data, the Young's modulus of the PLA/clay nanocomposites showed improvement at a screw rotating speed of 150 rpm. The Young's modulus improved with the addition of the organoclay to PLA matrix, but decreased when PA12 was added to the PLA matrix. The tensile strengths and elongations become small by adding organoclay to PLA matrix. The tensile strengths of the PLA/organoclay nanocomposites increased for the higher screw rotating speed (150 rpm). The d‐spacing of PLA/PA12/Clay nanocomposites was independent of the addition of PA12. The size of the clay aggregates in the PLA/PA12/Clay nanocomposites is smaller than that of PLA/Clay. Furthermore, the thermal stability of the PLA/Clay nanocomposite increases with addition of PA12, while on the whole, it had little influence on the tensile properties. POLYM. COMPOS., 29:1–8, 2008. © 2007 Society of Plastics Engineers