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Investigation of Swelling and Dissolution Process of Natural Rubber in Aromatic Oil

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China Petroleum Processing & Petrochemical Technology 2015年第3期17卷 76-86页

作者： Wang Feng Kuang Minming li guanlong Zhou Xiaolong li Chenglie Department of Petroleum Processing East China University of Science & Technology

Aromatic oil has been used to promote the properties of crumb rubber modified asphalt which is an ideal method to deal with the resource utilization of waste rubber tires and by-product of refinery. Furfural extract oil(FEO) was separated into the light fraction and the heavy fraction. Swelling and dissolution process of natural rubber sheet in these three oil samples was investigated to shed light on the interaction mechanism. Crumb rubber also interacted on FEO and asphalt respectively. Energy dispersive spectrometer(EDS), thermo-gravimetric analysis(TGA) and scanning electron microscope(SEM) were used to characterize the chemical and structural properties of processed rubber. The chemical composition of processed oils and asphalt was investigated by using the hydrocarbon group analysis(SARA) and gel permeation chromatography. The results revealed that the swelling rate and mass loss of rubber in oils were much higher than those in asphalt and rose with an increasing processing temperature. The heavy fraction of FEO had more diffusion and dissolving capability than the light fraction, whilst compatibility was observed between the heavy fraction and the light fraction. Selective absorption was not observed in the study and detachment of dissolved rubber was disseminated from the outside to the inside. The cross-linking degree of the residue rubber was unchanged with the processing time, and sulfur predominantly remained in the undissolved rubber. Dissolution of crumbed rubber in oils was attributed to devulcanization, while that in the asphalt was mainly attributed to depolymerization.

关键词： rubber aromatic oil asphalt swelling dissolution

The Characteristics and Significance of Peng Co Peridotites in the Middle Segment of Bangong Co-Nujiang Suture in Tibet

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Acta Geologica Sinica(English Edition) 2020年第S01期94卷 37-38页

作者： LU Yuxiao YANG Jingsui DONG Yufei XIONG Fahui CHEN Xiaojian li guanlong BO Rongzhong Center for Advanced Research on the Mantle(CARMA) Key laboratory of Deep-Earth Dynamics of Ministry of Natural ResourcesInstitute of GeologyChinese Academy of Geological SciencesBeijing 100037China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The Peng Co ophiolite is located to the west of Peng lake in the area of lakes in north Tibet, which belongs to the Baila-Yilashan sub-belt of the the middle Bangong Co-Nujiang ophiolitic belt. The Peng Co ophiolite is mainly composed of mantle peridotites, cumulates, diabase dikes. About 70 percent peridotites are harzburgites and 30 percent are lherzolites. Mineral chemistry of the Peng Co lherzolitesare characterized by low Fo contents(88.85–90.33) of olivine and high Al2O3 content(4.26%–7.25%) in pyroxenes. Compared to the primitive mantle, the Peng Co peridotites have relatively higher MgO contents, lower CaO, Al2O3 and TiO2 contents. The total rare-earth element(REE) contents of the lherzolites are 1.11–1.53 ppm, which are lower than those of the primitive mantle. The chondritenormalized REE patterns of the Peng Co peridotites display slight loss in LREE. In the primitive mantle-normalized spider diagram, the Peng Co peridotites exhibit negative Rb and Zr anomalies and intensively positive U, Ta, Sr anomalies. The PGE contents of Peng Co lherzolites are between 22.9–27 ppb. The chondrite-normalized PGE patterns of the Peng Co lherzolites are consistent with that of the primitive mantle. Mineral and whole-rock geochemistry characteristics of the Peng Co lherzolites show an affinity to abyssal peridotites, indicating that it may have formed in the mid-ocean ridge setting. Through quantitative modeling, we conclude that the Peng Co lherzolites formed after 5%–10% degree of partial melting of the spinelphase lherzolite mantle source. The sharp increase of Cr#(56.74–60.84)in Spinel of harzburgites and relatively high Pd/Ir and Rh/Ir ratios suggest that they have experienced melt-rock reaction. The crystallization sequence of Peng Co cumulate is olivine-clinopyroxene-plagioclase. The Mg# value of clinopyroxene in cumulate peridotite ranges from 86.92 to 89.93, and the mean value of Fo is 84.45, which is obviously higher than that of MOR-type ophiolite cumulates. The

关键词： Bangong Co-Nujiang suture zone MOR-type peridotites Peng Co ophiolite partial melting melt-rock reaction

Peridotites and Chromitites from the Dingqing Ophiolite in the Eastern Segment of Bangong–Nujiang Suture Zone, Tibet: Occurrence Characteristics and Classifications

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Acta Geologica Sinica(English Edition) 2020年第S01期94卷 23-25页

作者： li guanlong YANG Jingsui BO Rongzhong liU Fei RUI Huichao XIONG Fahui GUO Tengfei Center for Advanced Research on the Mantle(CARMA) Key laboratory of Deep-Earth Dynamics of Ministry of Natural ResourcesInstitute of GeologyChinese Academy of Geological SciencesBeijing 100037 School of Earth Sciences and Resources China University of GeosciencesBeijing 100083 School of Earth Sciences China University of GeosciencesWuhan 430074Hebei The Second Geo-Exploration Institute of CMGB Fuzhou 350108Fujian

The Dingqing ophiolite is located in the eastern segment of the Bangong-Nujiang suture zone. This suture zone is W–E trending parallel with the Yarlung–Zangbo suture zone and is an strategic area for exploring chromite deposits in China. The Dingqign ophiolite is distributed in near SE-NW direction. According to the spatial distribution, the Dingqing ophiolite is sudivided into two massifs, including the East and the West massifs. The Dingqing ophiolite covers an area of nearly 600 km2. This ophiolite is composed of peridotite, pyroxenite, gabbro, diabase, basalt, plagiogranite and chert(Fig. 1). The peridotite is the main lithology of the Dingqing ophiolite. The peridotite covers about 90% of the total area of the Dingqing ophiolite. The Dingqing ophiolite is dominated by harzburgite with a small amounts of dunite. The Dingqing harzburgite displays different textures, such as massive, Taxitic, oriented and spherulitic textures(Fig. 2d–i). These four types of harzburgite occur in both the East and West massifs, especially in the Laraka area of the eastern part of the East massif. Dunites have different occurrences in the field outcrops, such as lenticular or stripshaped, thin-shell and agglomerate varieties(Fig. 2a–c). On the basis of detailed field work, we have discovered 83 chromitite bodies, including 27 in the East massif and 56 in the West massif. According to the occurrence scale and quantity of the chromitite bodies, we have identified four prospecting areas, namely Laraka, Latanguo, Langda and Nazona. Chromitites in the Dingqing ophiolite show different textures, including massive, disseminated, veined and disseminated-banded textures(Fig. 3). On the basis of the Cr#(=Cr/(Cr+Al)×100) of chromite, we have classified the Dingqing chromitite into high-Cr, medium high chromium type, medium chromium type and low chromium type chromitite(Figs. 4, 5). Among them, low chromium type chromitite Cr# is extremely low, ranging from 9.23 to 14.01, with an average of 11.8

关键词： peridotite chromitite occurrence classification Bangong-Nujiang suture zone

青藏高原新特提斯蛇绿岩的地质特征及其构造演化

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岩石学报 2020年第10期36卷 2913-2945页

作者：刘飞杨经绥连东洋李观龙地幔研究中心自然资源部深地动力学重点实验室中国地质科学院地质研究所北京100037 南方海洋科学与工程广东省实验室(广州) 广州511458 山东省金刚石成矿机理与探测院士工作站山东省第七地质矿产勘查院临沂276006 南京大学地球科学与工程学院南京210023

西藏雅鲁藏布江缝合带(YZSZ)和班公湖-怒江缝合带(BNSZ)蛇绿岩代表了新特提斯洋壳和岩石圈地幔残余,是我国铬铁矿和蛇绿岩型金刚石的重要原产地,目前这两条蛇绿岩带的成因和相互关系还存在着争论。本文总结了YZSZ、BNSZ、狮泉河-纳木错... 详细信息

西藏雅鲁藏布江缝合带(YZSZ)和班公湖-怒江缝合带(BNSZ)蛇绿岩代表了新特提斯洋壳和岩石圈地幔残余,是我国铬铁矿和蛇绿岩型金刚石的重要原产地,目前这两条蛇绿岩带的成因和相互关系还存在着争论。本文总结了YZSZ、BNSZ、狮泉河-纳木错蛇绿混杂岩带(SNMZ)和松多缝合带蛇绿岩的时空分布、组成和构造背景,归纳了拉萨地块晚古生以来的岩浆岩分布,获得以下主要认识:(1) Panjal地幔柱活动可能促使怒江洋和雅江西洋在早二叠世空谷期(283~272Ma)打开;(2)雅江东洋由于松多洋的南向俯冲在晚三叠世打开,与雅江西洋以萨嘎-措勤为界,并形成冈底斯东部245~200Ma岩浆热事件;(3)~140Ma班怒洋闭合以及南羌塘与北拉萨地块碰撞,导致雅江洋扩张速率加快而引发了北向拉萨地块的平板俯冲,进而导致班怒洋的再次裂解形成133~104Ma"红海型"小洋盆;(4) YZSZ缝合带西段南带蛇绿岩为北带的逆冲推覆体;(5) BNSZ和SNMZ蛇绿岩隶属于一个洋盆,后者代表了班怒洋成熟洋盆扩张脊的残余。

关键词：雅鲁藏布江缝合带班公湖-怒江缝合带松多缝合带冈底斯岛弧蛇绿岩新特提斯洋

Ocean-continent Transition to Suprasubduction Zone Origin of the Western Yarlung Zangbo Ophiolites in SW Tibet, China: Multi-stage, Transient Evolution of the Neotethyan Oceanic lithosphere

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 16-17页

作者： liU Fei YANG Jingsui Yildirim DILEK liAN Dongyang XIE Yanxue NIU Xiaolu FENG Guangying ZHAO Hui HUANG Jian li guanlong CARMA Institute of GeologyChinese Academy of Geological Sciences Department of Geology and Environmental Earth Science Miami University Faculty of Earth Sciences China University of Geosciences Department of Geology and Mineral Resources China University of GeosciencesBeijing

The ophiolites that crop out discontinuously along the;000 km Yarlung Zangbo Suture zone（YZSZ）between the Nanga Parbat and Namche Barwa syntaxes in southern Tibet represent the remnants of Neotethyan oceanic lithosphere（Fig.1a）.We have investigated the internal structure and the geochemical makeup of mafic-ultramafic rock assemblages that are exposed in the westernmost segment of the YZSZ where the suture zone architecture displays two distinct sub-belts of ophiolitic and mélange units separated by a continental Zhongba terrane（Fig.1b）.These two sub-belts include the Daba–Xiugugabu in the south（Southern sub-belt,SSB）and the Dajiweng–Saga in the north（Northern sub-belt,NSB）.We present new structural,geochemical,geochronological data from upper mantle peridotites and mafic dike intrusions occurring in these two sub-belts and discuss their tectonomagmatic ***-situ analysis of zircon grains obtained from mafic dikes within the Baer,Cuobuzha and Jianabeng massifs in the NSB,and within the Dongbo,Purang,Xiugugabu,Zhaga and Zhongba in the SSB have yielded crystallization ages ranging between130 and 122 *** rocks in both sub-belts show N-MORB REE patterns and negative Nb,Ta and Ti anomalies,reminiscent of those documented from SSZ ophiolites.*Harzburgitic host rocks of the mafic dike intrusionsmainly display geochemical compositions of abyssal peridotites（Fig.2）,with the exception of the Dajiweng harzburgites,which show the geochemical signatures of forearc peridotites（lian et al.,2016）.Extrusive rocks that are spatially associated with these peridotite massifs in both sub-belts also have varying compositional and geochemical *** to Valanginian（150–135 Ma）basaltic rocks in the Dongbo massif have OIB-like geochemistry and 138 Ma basaltic lavas in the Purang massif have EMORB-like geochemistry（liu et al.,2015）.Tuffaceous rocks in the Dajiweng massif are140 Ma in age and show OIB-like *** interpret these age and geochemical data to reflect

关键词： China Multi-stage Ocean-continent Transition to Suprasubduction Zone Origin of the Western Yarlung Zangbo Ophiolites in SW Tibet Transient Evolution of the Neotethyan Oceanic lithosphere OIB

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630吨摩擦螺旋压力机的冲顶分析与研究

机械设计与研究 1999年第3期15卷 71-72页

作者：李冠龙上海第二耐火材料厂上海200083

本文以产品质量和工艺过程为基本要求，通过对工作机构的能量及螺杆螺纹头数的分析，找出解决６３０吨摩擦螺旋压力机冲顶问题的方法—螺杆螺纹头数由四头改为两头。

关键词：冲顶直线速度螺杆螺纹头数摩擦螺旋压力机

西藏雅鲁藏布江缝合带西段东波蛇绿岩:记录了地幔柱影响的超慢速伸展和洋内俯冲过程

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岩石学报 2021年第10期37卷 2971-2994页

作者：刘飞杨经绥牛晓露李观龙冯光英自然资源部深地动力学重点实验室中国地质科学院地质研究所北京100037 南方海洋科学与工程广东省实验室(广州) 广州511458 山东省金刚石成矿机理与探测院士工作站山东省第七地质矿产勘查院临沂276006 南京大学地球科学与工程学院南京210023

雅鲁藏布江缝合带西段出露东波和普兰等多个大型的超镁铁岩体,其成因还存在争议。为此我们近年来对东波蛇绿岩开展了地表填图并实施了一口1002m的科学钻探DSD-1。研究显示具有“厚幔极薄壳”特征的东波蛇绿岩记录了多期岩浆事件:(1)~13... 详细信息

雅鲁藏布江缝合带西段出露东波和普兰等多个大型的超镁铁岩体,其成因还存在争议。为此我们近年来对东波蛇绿岩开展了地表填图并实施了一口1002m的科学钻探DSD-1。研究显示具有“厚幔极薄壳”特征的东波蛇绿岩记录了多期岩浆事件:(1)~137Ma的OIB型玄武岩和138~144Ma的OIB型辉绿岩和辉长岩,以及普遍出露熔融程度达30%以上的亏损型方辉橄榄岩,反映了早白垩世初期古洋盆受到地幔柱活动影响;(2)129Ma的薄壳均质辉长岩(I型)、128Ma的辉长岩脉(Ⅱ型)和科钻岩芯中厚18m辉绿岩(Ⅲ型)的地球化学成分均与西南印度洋洋脊玄武岩类似,它们是在慢速-超慢速扩张脊附近大洋核杂岩侵位过程中形成的;(3)地表辉绿岩脉(Ⅳ型)的SIMS和SHRIMP锆石U-Pb年龄为121~123Ma,全岩地球化学具有异常低的REE、HFSE含量及明显的Th、Nb、Zr、Hf负异常,类似于Albanide-Hellenide造山带蛇绿岩中的无壳源物质混染的中钛玄武岩,指示辉绿岩脉形成于洋内初始俯冲环境。总的来说,东波蛇绿岩记录了早白垩世地幔柱影响的超慢速扩张和初始洋内俯冲过程。

关键词：地幔柱大洋核杂岩洋内俯冲中钛玄武岩雅鲁藏布江缝合带

班公湖-怒江洋的扩张脊俯冲:宗白增生杂岩中侏罗世辉长岩脉地球化学和Sr-Nd同位素特征

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地质通报 2021年第8期40卷 1247-1264页

作者：刘飞李观龙薄容众杨经绥自然资源部深地动力学重点实验室中国地质科学院地质研究所北京100037 南方海洋科学与工程广东省实验室(广州) 广东广州511458 山东省金刚石成矿机理与探测院士工作站山东省第七地质矿产勘查院山东临沂276006 南京大学地球科学与工程学院江苏南京210023

丁青蛇绿岩位于班公湖-怒江缝合带东段,被宗白增生杂岩分为东、西2个蛇绿岩体,面积分别约为400 km 2和150 km 2。宗白增生杂岩由异地体亚宗混杂岩和上部原地体陆缘碎屑沉积岩组成。亚宗混杂岩由低变质岩带、砾岩带、玄武质凝灰岩夹薄层... 详细信息

丁青蛇绿岩位于班公湖-怒江缝合带东段,被宗白增生杂岩分为东、西2个蛇绿岩体,面积分别约为400 km 2和150 km 2。宗白增生杂岩由异地体亚宗混杂岩和上部原地体陆缘碎屑沉积岩组成。亚宗混杂岩由低变质岩带、砾岩带、玄武质凝灰岩夹薄层泥硅质岩带和作为主要基质的泥页岩夹薄层杂砂岩组成,其中泥页岩基质被中侏罗世辉长岩脉侵入。辉长岩脉发育双侧冷凝边,走向90°~110°不等,主量、稀土和微量元素成分均介于富集型洋中脊玄武岩和洋岛玄武岩之间,结合εNd(t)=1.88~2.41和(87 Sr/86 Sr)t=0.70912~0.70919,指示宗白辉长岩岩浆为大洋岩石圈地幔底部地震波低速带(LVZ)顶部富集挥发分和不相容元素的洋岛玄武岩型熔体,与源自LVZ下部亏损软流圈地幔的正常洋中脊玄武岩型熔体混合的产物,形成于弧前扩张脊与俯冲带相互作用的板片窗环境。

关键词：洋脊俯冲增生杂岩辉长岩丁青蛇绿岩班公湖-怒江缝合带

茶树菇子实体新纤溶酶的纯化及其溶栓抗凝性质研究

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食品与发酵工业 2020年第11期46卷 105-111页

作者：李冠龙刘晓兰郑喜群齐齐哈尔大学食品与生物工程学院黑龙江齐齐哈尔161006 黑龙江八一农垦大学食品学院黑龙江大庆163319 黑龙江省玉米深加工理论与技术重点实验室黑龙江齐齐哈尔161006

从茶树菇子实体中提取、纯化纤溶酶,研究其体外的溶栓活性和抗凝活性,用于开发预防具有血栓倾向的心脑血管疾病的功能食品。对茶树菇(Agrocybe aegerita)子实体含有的纤溶酶进行研究,将子实体干燥、粉碎、生理盐水浸提,获得粗酶液,再依... 详细信息

从茶树菇子实体中提取、纯化纤溶酶,研究其体外的溶栓活性和抗凝活性,用于开发预防具有血栓倾向的心脑血管疾病的功能食品。对茶树菇(Agrocybe aegerita)子实体含有的纤溶酶进行研究,将子实体干燥、粉碎、生理盐水浸提,获得粗酶液,再依次经盐析、Sephadex G-25凝胶色谱、CM-Sepharose FF离子交换色谱、Source 15PHE疏水色谱和Mono S离子交换色谱纯化,最终得到纤溶酶(ACase)。该酶比活力为1731.05 U/mg,纯化倍数为246.94。十二烷基磺酸钠-聚丙烯酰胺凝胶电泳(sodium dodecyl sulfate-polyacrylamide gelelectrophoresis,SDS-PAGE)和Native-PAGE电泳分析显示,ACase为二聚体蛋白,分子质量分别为31.4 kDa和21.2 kDa。Edman降解法分析显示,2个亚基N-端序列分别为AIVTQTNAPWGL和SNADGNGHGTHV,经序列比对确定该酶为新纤溶酶。体外实验显示,ACase可顺次降解人血纤维蛋白原α、β和γ链,具有明显的抗凝血作用。研究显示,茶树菇可以作为功能性食品基料用于开发降低血栓倾向的功能食品。

关键词：茶树菇子实体纤溶酶溶栓抗凝功能性食品分离纯化