纳米二氧化钛生产的工艺与设备（一）

提出了以硫酸法钛白生产的中间产物硫酸氧钛或偏钛酸为原料均匀沉淀法生产纳米二氧化钛的技术路线，重点介绍了500t/a和1000t／a两种规模工业生产纳米二氧化钛的水解沉淀反应：500t／a生产规模的水解沉淀反应采用间歇搅拌釜式反应法；1000t/a规模采用直接蒸汽加热、快速冷却的工艺方案，并对主要设备的选型进行了计算。     

缺陷化合物La2/3TiO3-λ(λ=0.000～0.046)粉末的水热合成及表征

水热法合成了系列缺陷化合物La_(2／3)TiO_(3-λ)（λ=0.000～0.046）粉末，利用XRD及TEM等技术对产物进行了表征；氧缺陷浓度增大，晶胞体积增大，在λ=0.020时，化合物由正交相转变为四方相；产物颗粒间聚集度较小，颗粒外形呈较规则六面体，平均直径0.1～0.3μm．     

甲基苯基二氯硅烷与苯基三氯硅烷共水解缩聚研究

研究了甲基苯基二氯硅烷与苯基三氯硅烷的共水解缩合反应,探讨了甲基苯基二氯硅烷含量、反应温度、水的用量及反应时间对水解缩聚反应的影响,确定了最佳工艺.采用红外、核磁等手段对水解缩聚产物进行了结构表征.     

宝钢集团公司750高炉爆破拆除

采用爆破工艺拆除750高炉，对高炉在垂向23m范围内的炉瘤、水葙、耐火砖和炉底1．6m厚的残铁采用不同的爆破方法进行破碎。介绍了高温状态(400℃)下，采用强制降温、药包隔热、多点同时装药等多种爆破工艺，确保在高炉停炉后6d内完成了拆除任务。     

PAN废丝接枝聚乙二醇相变材料的制备

研究了腈纶(PAN)废丝碱催化水解工艺,用傅立叶红外光谱表征了PAN废丝水解产物的结构。采用正交实验法研究了PAN废丝接枝聚乙二醇制备工艺,用差示扫描量热仪研究了聚乙二醇(PEG)分子量、催化剂用量、接枝反应温度等因素对腈纶水解产物和聚乙二醇的接枝产物(HPAN-g-PEG)相变性能的影响,用偏光显微镜考察了PEG、HPAN-g-PEG的晶体结构,通过测定步冷曲线观察了接枝产物的保温性能。结果表明,该接枝材料表现出固-固相转变特性,潜热储存能力达105J/g,并呈现出良好的保温性能。     

催化剂废水工艺处理研究

本文论述了应用催化氧化、水解酸化、好氧氧化工艺处理催化剂废水的工程状况。工程经过几个月的调试，该工艺出水稳定、耐冲击负荷，出水各项水质指标均达到《污水排人城镇下水道水质标准》（DB31／425-2009）。针对催化剂废水的特殊性，主工艺前增加了催化氧化作为预处理工艺，提高了废水的可生化性，大幅度减少了废水中有毒有害物质，保证后续生化处理的顺利进行和达标排放。工程实践表明：催化氧化／水解酸化／好氧氧化工艺对处理催化剂废水具有较好的处理效果，值得推广。     

放电等离子烧结新型NdFeB永磁材料工艺研究

采用放电等离子烧结技术制备了新型NdFeB磁体，研究了烧结工艺和热处理工艺对磁体的磁特性、尺寸精度及致密度的影响。同时利用B-H回线仪、扫描电子显微镜对其磁特性、显微组织结构进行了分析测试。结果表明，这种新型的烧结NdFeB磁体具有独特的显微组织结构，主相NdFe14B晶粒细小、尺寸均匀，富钕相弥散分布在主相边界上。获得最佳工艺条件下制备的磁体的磁特性为：最大磁能积(BHmax)240kJ／m^3，内禀矫顽力(Hci)1160kA／m，磁体的密度达到7．58g／cm^3，接近材料的理论密度，同时磁体的尺寸精度达到20μm。     

端基含环氧基团的液晶化合物的合成与表征

以对羟基苯甲酸甲酯为主要原料,通过酯化、醚化、水解等有机反应合成了3种端基含双键的液晶单体(Ⅳm),并以间氯过氧苯甲酸作为氧化剂将双键氧化,得到了3种含环氧官能团的液晶化合物(Ⅴm)。通过红外光谱(FT-IR)、核磁共振(NMR)对液晶单体的分子结构进行表征,采用差热扫描量热仪(DSC)和热台偏光显微镜(POM)测定其液晶相态。结果表明,所有目标产物分子结构正确,在一定条件下有液晶性能,且为互变型热致液晶。     

聚酰胺酸的合成新方法及表征分析

主要讨论了在低沸点的四氢呋喃／甲醇(质量比＝4／1)混合溶剂体系中的聚酰胺酸(PAA)合成问题，并通过IR、DSC、TG／DTG等手段对产物进行了表征，结果表明能得到优良性能的PAA。     

聚丙烯/三元乙丙胶/凹凸棒土三元复合体系的力学性能与亚微相态

通过两步法共混工艺制备了含核-壳结构特征相包容粒子的聚丙烯／三元乙丙胶／凹凸棒土三元复合材料,研究了复合材料的力学性能和亚微现相态结构,并对核-壳结构特征相包容粒子对PP的增韧机理进行了初步探讨．结果表明,AT在EPDM中疏松堆砌,形成以AT堆砌体为核、EPDM为壳的分散岛相。核-壳结构特征相包容粒子对基体具有良好的增韧和增强效果的平衡,对于m(PP)／m(EPDM)／m(AT)=100／20／5的体系,其缺口冲击强度较纯PP提高约5倍,而屈服强度和扬氏模量分别较m(PP)／m(EPDM)=100／20体系提高25％和110％。     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from     

CNAS Passes APLAC's PTP Review

正The review group of Asia Pacific Laboratory Accreditation Cooperation(APLAC)carried out a 4-day peer review of the proficiency testing provider(PTP)for China National Accreditation Service for Conformity Assessment(CNAS)from July 28 to 31,2014.CNAS passed the PTP review with excellent performance.Two senior peer reviewers of APLAC made a comprehensive,rigorous and detailed review of CNAS’s PTP accreditation activities,and made the on-spot inspection of the review groups in Shanghai and Shenzhen respectively.     

新闻(英文)

正China and Greece Sign the Standardization Cooperation Agreement Witnessed by Chinese Premier Li Keqiang and Greek Prime Minister Antonis Samaras,AQSIQ Minister Zhi Shuping and ELOT Chairman and Executive Director Angelos Tolkas signed the SAC-ELOT Standardization Cooperation Agreement.The Agreement is one of the critical cooperation documents signed during Li Keqiang’s visit in Greece,encouraging China and Greece to     

Win-Win Cooperation

正The Chinese Premier Li Keqiang's recent trip to the UK has reinforced the China-UK comprehensive strategic partnership;just as the British Prime Minister David Cameron put it,"the relationship is gaining in strength,depth and understanding"after a bucket of business deals being inked worth more than 30 billion US dollars.From the first agreement signing in 2004 to the new agreement of mutual standards recognition and adoption in     

Systematic Approach for Emerging Industry

正A national directory of standards complexes for strategic emerging sectors was recently developed and released jointly by 12governmental departments,namely,SAC,NDRC,MOST,MIIT,MEP,MOA,AQSIQ,State Forest Administration,State Administration of Science and Technology for National Defense,State Oceanic Administration and National Railway Administration.     

Strictest Pollutants Emission Standards

正Four new national standards on air pollutant emission control offi cially issued by the Ministry of Environment Protection(MEP)together with AQSIQ and SAC has been brought into force from July 1,2014.The Emission standard for air pollutants of coal-burning,oil-burning and gasfi red boilers,which is the strictest emission standard historically,will tackle the stubborn pollution problem of boilers and waste incineration in most of China’s regions.     

Instructions to Authors

New Carbon Materials is a bimonthly journal published with the permission of the Ministry of Science and Technology and of the State News and Publication Agency.The journal is sponsored by the Institute of Coal Chemistry,Chinese Academy of Sciences,and is published by Science Press.Aims and Scope     

Progress on Standards Copyright Protection

正Recently,National Copyright Administration of China(NCAC)has rewarded 215 organizations and 179 individuals for their outstanding efforts on investigating standards copyright infringement and piracy in 2013.Hua Jianhua,the Deputy-Director of National Standards Copyright Protection Workgroup Office won a third prize of the national individual award.In 2012,SAC set up the national standards copyright protection working group,and developed policies to crack down standards infringement and piracy behaviors and to strengthen standards copyright protection.