丙烯腈

Photoinduced Electron Transfer [2+2] Cycloaddition Reactions ofBenzannelated Isoquinolin-1-ones with Electron Deficient Alkenes Photoinduced [2+2] cycloaddition reactions of 11H-benzoxazolo[3,2-b]isoquinolin-11-one 8 and 11H-benzothiazolo[3,2-b]isoquinolin-11-one 13 with electron deficient alkenessuch as acrylonitrile, methyl acrylate, dimethyl fumarate and dimethyl maleate afforded a group of polycyclic isoquinoline derivatives bearing cyclobutane moieties ingood to excellent yields and resulted in the Schenck isomerization of the alkenes.

3苯并增环异喹啉-1-酮与缺电子烯烃的光诱导电子转移[2+2]环加成反应 11H-苯并恶唑[3，2-b]异喹啉-11-酮8和11H-苯并噻唑[3，2-b]异喹啉-11-酮13与缺电子烯烃如丙烯腈，丙烯酸甲酯，富马酸二甲酯及马来酸二甲酯的光诱导[2+2]环加成反应以高产率给出一系列含有环丁烷结构单元的多环异喹啉衍生物并导致烯烃的Schenck异构化作用。

A new type of non- asbestos rubber gasket sheet was developed using highly fibrillated PAN pulp as a reinforcement and high effciency entrap component replaced of aramid pulp.

以上海兰邦公司生产的高度原纤化聚丙烯腈浆粕为增强及高效微粒捕获组分，取代石棉及芳纶浆粕，开发研制了一种新型无石棉橡胶密封板，并对其进行了系统的性能测试分析。

Then they formed C hexahydric rings during the carbonization process.T-700 carbon fiber had high tensile strength due to its smaller d 002, thicker L c and higher crystallinity.

利用DSC/TG、FT-IR、XRD、元素分析、SEM、TEM和HRTEM系统研究了聚丙烯腈预氧化纤维碳化中的结构演变与碳纤维微观结构。

Hydrogen pressure. Moreover, it was found that the hydrogenation reaction ofα-hexene was accompanied with a isomerization reaction.

聚丙烯腈负载纳米钯催化剂在催化加氢α-辛烯的实验中，纤维直径和钯颗粒较小的催化剂显示了更好的催化性能。

Objective: Acrylonitrileis a hypertoxic nitrile of colorless and bitter apricot seed. It is an important material used for synthetic resin, synthetic fiber, synthetic rubber, et al, and its manufactures is widely used in daily life and production process. Because of computers, television, automobiles and other related industries on the demand for ACN, the production and demands of ACN is increasing year by year, and the occupational exposure is also a rapidly expanding population.

目的：丙烯腈(acrylonitrile，ACN)，是一种无色、具苦杏仁味的高毒类腈化物，是合成树脂、合成纤维、合成橡胶等高分子材料生产中的重要原料，其制成品在日常生活和生产过程中使用广泛；电脑、电视、汽车等相关行业对ACN的需求量不断增加，近年来的生产量和需求量逐年上升，职业接触人群也迅速扩大。

Moreover, based on the petrochemical industrial characteristics, this specification has defined benzene piping with a hypertoxicity level of extremely harmful medium as Grade SHB piping and acrylon, carbonyl chloride, carbon disulfide sulphide and hydrogen fluoride piping with a hypertoxicity level of high harmful medium as Grade SHA piping.

此外，根据石化行业的特点，本规范将毒性程度为极度危害介质的苯管道作为 SHB 级管道处理，将毒性程度为高度危害介质的丙烯腈， 48 SH 3501-2002 光气，二硫化碳和氟化氢管道作为 SHA 级管道处理。

In this work, properties of acrylonitrile-co-ammonium of itaconic acid system was studied in detail in order to accumulate foundation for high performance carbon fibers.

本文将衣康酸铵作为第二单体，系统研究了丙烯腈-衣康酸铵二元体系作为炭纤维前驱体的特点，以期为开发适用于高性能炭纤维的二元PAN原丝奠定必要的基础。

Key words: polymer material;acrylonitrile;itaconic acid;copolymerization;molecular weight;differential scanning calorimetry; thermogravimetry

关键 词：高分子材料；丙烯腈；衣康酸；共聚合；分子量；差示扫描量热法；热重

Synthesized ethylene - laborious Xi copolymer and methylic acrylic acid armour ester - propylene nitrile - the graft copolymer of styrene .

梗概： 合成了乙烯-辛烯共聚物和甲基丙烯酸甲酯-丙烯腈-苯乙烯的接枝共聚物。

The combined process of Fenton reagent, Microelectrolysis and Biological contact oxidation is proposed to treat the Acrylonitrile wastewater.

实验采用Fenton试剂氧化-微电解-接触氧化组合工艺处理丙烯腈废水。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。