PC/PET/PE-g-MAH三元共混物的研究

用ＤＳＣ、ＰＬＭ和ＳＥＭ研究了ＰＥｇＭＡＨ对ＰＣ／ＰＥＴ共混体系的相容性、结晶性、结晶形态及相形态的影响。结果表明,ＰＥｇＭＡＨ可以改善体系的相容性,提高ＰＥＴ的结晶能力和速率,改善ＰＣ、ＰＥＴ间的相互分布,且随含量的增加而程度加深。     

LDPE对PBT／PC共混体系性能的影响

研究发现，在ＰＢＴ／ＰＣ共混体系中加入少量熔体指数（ＭＩ）较大的低密度聚乙烯（ＬＤＰＥ），可以改善该共混体系的加工成型性能、外观及力学性能。随着ＬＤＰＥ含量的增加，ＰＢＴ／ＰＣ巫混物的溶体指数增大；ＬＤＰＥ对共混体系还可起增韧作用，ＬＤＰＥ的加入使共混物的缺口冲击强度有明显的提高。另外，ＤＳＣ研究发现，ＬＤＰＥ的引入对共混物中ＰＢＴ组分的结晶有明显的促进作用，并使ＰＣ的玻璃化转变温度Ｔｇ下降。热失     

PET／HDPE共混物的形态结构及力学性能的研究

利用ＩＲ、ＳＥＭ、ＤＳＣ和力学测试等分析方法，研究了熔融接枝高密度聚乙烯（ＨＤＰＥ－ｇ－ＭＡ）和界面改性剂（ＩＭ）对ＰＥＴ／ＨＤＰＥ共混物形态结构、界面偶联状况和力学性能的影响。结果在明，ＨＤＰＥ－ｇ－ＭＡ改善了ＰＥＴ与ＨＤＰＥ的相容性，使ＨＤＰＥ较均匀地分散在ＰＥＴ基体中，但并未检测到ＰＥＴ／ＨＤＰＥ－ｇ－ＭＡ界面有化学反应发生。界面改性剂的作用在于，一方面通过提高ＰＥＴ基体的粘度，并接近ＨＤＰＥ相的粘度而使分散相细化；另一方面通过与ＨＤＰＥ－ｇ－ＭＡ和ＰＥＴ的偶联反应而增强了ＰＥＴ／ＨＤＰＥ－ｇ－ＭＡ界面粘结，从而显著地提高了共混物的抗冲击性能。     

PC辐射接枝PS及其对PC／PS共混物的增容作用

报导了用γ射线辐照聚碳酸酯（ＰＣ）和苯乙烯（Ｓｔ）混合物，通过ＩＲ谱和称量法证实ＰＣ和Ｓｔ发生了辐射接枝反应，研究了溶剂、单体浓度等因素对接枝反应的影响，得到了ＰＣ－ｇ－ＰＳ。并用ＤＳＣ和ＳＥＭ研究了ＰＣ／ＰＳ、ＰＣ／ＰＳ／ＰＣ－ｇ－ＰＳ熔融共混体系的相容性，结果表明，ＰＣ－ｇ－ＰＳ对以ＰＳ为连续相ＰＣ为分散相和ＰＣ为连续相ＰＳ为分散相的共混体系均有明显的增容作用。     

液晶共聚酯酰胺对PET/PA66共混体系的增容作用

将ＰＥＴ、ＰＡ６６和ＬＣ３０进行熔融共混，采用ＳＥＭ、热台偏光显微镜、ＤＳＣ、Ｉｎｓｔｒｏｎ３２１１型毛细管流变仪测定了共混物的形态结构、热行为和流变性能，系统地研究了热致液晶共聚酯酰胺（ＬＣ３０）对聚对苯二甲酸乙二酯（ＰＥＴ）／聚酰胺６６（ＰＡ６６）共混物的增容作用。结果表明，ＬＣ３０对ＰＥＴ／ＰＡ６６共混物的增容作用，有效地改善了ＰＥＴ／ＰＡ６６共混物的形态结构和流变性能，增强了ＰＥＴ链与ＰＡ６６链间的相互作用，使ＰＥＴ／ＰＡ６６共混物的熔点降低，结晶度提高，流变行为由原来的负偏差行为转变为正偏差行为。     

PPS／PBT共混体系的研究

在Ｂｒａｂｅｎｄｅｒ混合仪中，用熔融混合法制备结晶／结晶共混体系ＰＢＴ／ＰＰＳ。采用ＤＳＣ、ＷＡＸＤ和ＳＥＭ对共混物的结晶，熔融，相容性和形态进行了研究。结果表明，ＰＢＴ／ＰＰＳ共混物是不相容的，各自自己的微区内进行结晶。ＰＢＴ加入可使窝本粘度明显上升。     

原位增容HAPE／PET共混体系结构与性能的研究

采用ＤＳＣ、ＷＡＸＤ、ＳＥＭ及ＴＧＡ研究了ＨＤＰＥ－ＰＥＴ共混体系在增容剂ＥＶＡＳ及ＥＡＡ作用下的结晶性,继口的形态结构及热稳定性。结果表明,ＥＶＡ及ＥＡＡ的加入使ＨＤＰＥ－ＰＥＴ体系中ＨＤＰＥ组分的熔融热焓降低,结晶度下降,但熔融峰位置和晶胞结构基本保持不变;从扫描电镜照片可以观察到ＥＶＡ及ＥＡＡ对共混体系具有一定的增容作用,且ＥＡＡ的效果优于ＥＶＡ;共混体系的热稳定性随ＥＶＡ及ＥＡＡ的加入有所     

聚酯含量对PBT/PET/PA-6三元共混物性能影响

采用ＤＳＣ、ＳＥＭ等方法对ＰＢＴ／ＰＥＴ／ＰＡ６三元共混物中聚酯含量的变化与共混物性能之间的关系进行了研究。实验结果表明,共混物中ＰＥＴ含量的增加有利于提高该三元共混物的热性能和结晶性能;另外,ＰＢＴ含量的增加则大大提高了共混物的抗冲击能力。     

尼龙1010/HDPE-g-MAH共混体系界面形态及结晶行为的研究

通过Ｍｏｌａｕ实验、密度测定、二甲苯萃取物的ＩＲ分析以及ＤＳＣ、ＳＥＭ等手段，对尼龙１０１０／ＨＤＰＥ－ｇ－ＭＡＨ共混体系的界面形态和结晶行为进行了研究。结果表明，共混体系为热力学不相容体系；在熔融共混过程中，尼龙１０１０和ＨＤＰＥ－ｇ－ＭＡＨ发生化学反应，生成的接枝共聚物起到了共混体系相容剂的作用，分散和界面形态明显改善；共混体系中两相的结晶行为也受到影响，尼龙组分的熔融热焓明显下降。     

聚酯含量对PBT／PET／PA—6三元共混物性能影响

采用ＤＳＣ、ＳＥＭ等方法对ＰＢＴ／ＰＥＴ／ＰＡ－６三元共混物中聚醌含量的变化与共混物性能之间的关系进行了研究。实验结果一人混物中ＰＥＴ含量的增加有利于提高该三元共混物的热性能和结晶性能；另外ＰＢＴ含量的增加则大大提高了共混物的抗冲击能力。     

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.