加工助剂在白炭黑胎面胶中的应用

研究加工助剂莱茵塑分ST和GT对溶聚丁苯橡胶(S-SBR)／BR胶料以及莱茵塑分ST用量对S-SBR／乳聚丁苯橡胶(E-SBR)／BR胶料性能的影响。结果表明，在S-SBR／BR胶料中加入莱茵塑分ST和GT，可以降低胶料的门尼粘度，改善胶料的加工性能，对硫化胶的物理性能影响不大。在S-SBR／E-SBR／BR胶料中加入莱茵塑分ST，可以显著改善胶料的加工性能，提高硫化胶的定伸应力和耐热老化性能；莱茵塑分ST用量为4份时，硫化胶的动态力学性能最佳。     

CR/CBR船用电缆护套胶料的研制

以CR／氯化顺丁橡胶(CBR)并用比为中心，优选船用电缆护套胶料配方。结果得出，船用电缆护套胶料采用CR／CBR并用比为80／20的配方，硫化胶的物理性能、耐老化性能、耐油性能和阻燃性能达到指标要求，且胶料加工性能较好，生产成本比纯CR船用电缆护套胶料降低15％～20％。     

空气弹簧橡胶气囊配方的研究

介绍空气弹簧橡胶气囊胶料的配方设计及空气弹簧性能试验。确定的空气弹簧气囊胶料优化配方为：CR(牌号GRT) 100，氧化锌 5，氧化镁 4，促进剂 DM 硫黄 1．5，炭黑 30，软化剂 11．5，防老剂 4010NA／ODA 7，其它 5。该配方胶料的性能达到Contitech公司空气弹簧橡胶气囊胶料性能指标的要求。     

ZD-Ⅰ型轿车减震器橡胶支架的研制

介绍ZD-Ⅰ型轿车减震器橡胶支架的胶料配方设计、模具结构和生产工艺要点。胶料的主要配合为：生胶为NR／BR(并用比70／30)并用体系，硫化体系为硫黄硫化体系，补强体系为快压出炭黑／热裂解炭黑并用体系。产品的生产工艺过程为：胶料混炼和骨架处理，注射成型，表面涂装。产品性能完全符合用户要求。     

钢丝帘线不同粘合体系应用研究

研究有机钴盐品种和用量对载重子午线轮胎带束层胶料一镀铜钢丝帘线粘合力的影响。结果表明，加入硬脂酸钴、硼酰化钴和癸酸钴任何一种钴盐．胶料初始粘合力均较高，但硬脂酸钴胶料老化后的粘合性能较差，癸酸钴胶料的粘合性能略好，癸酸钴理想用量为0．58～0．81份。间／甲／白／钴粘合体系胶料老化前后的粘合性能均较好，粘合性能保持率较高，胶料的物理性能以及与钢丝的动态粘合性能均比生产配方胶料有所提高。     

电缆半导电屏蔽材料的制法

半导电屏蔽材料的制备工艺包括(1)将胶料加入熔融／混炼机中(包括熔融区和混炼区)，(2)将粒状导电炭黑输送到熔融／混炼机中，加入量近10～25％(以树脂重量为准)，(3)在熔融区熔解胶料，(4)在混炼区混和炭黑和熔融胶料，(5)对炭黑和胶料的混合物进行造粒，(6)将步骤4得到的炭黑和胶料的混合物进行再循环，或将步骤5得到的粒子送入熔融／混炼机中，(7)另外将足量粒状半导电炭黑输入到熔融／混炼机中以提供炭黑，     

低相对分子质量反式1，4-聚异戊二烯蜡在橡胶助剂造粒中的应用

用低相对分子质量反式1，4-聚异戊二烯蜡作载体对硫黄、氧化锌和促进剂CZ进行造粒，研究助剂造粒对NR／SBR胶料性能的影响；在助剂造粒过程中加入表面活性剂，考察其对造粒效果及BR／SBR胶料性能的影响。结果表明，助剂造粒后可增大NR／SBR胶料的门尼粘度，对胶料的正硫化时间和硫化胶的物理性能影响不大；在助剂造粒过程中加入表面活性剂，可提高BR／SBR胶料的混炼速度，改善加工性能，对硫化胶的物理性能影响不大。     

氯化聚乙烯橡胶在钢丝编织胶管外层胶中的应用

用氯化聚乙烯橡胶(CM)替代CR或氯磺化聚乙烯橡胶(CSM)与NBR并用研制了钢丝编织胶管的外层胶。确定配方为:CM352L 60，NBRN32 40，氧化锌 2，稳定剂 12，防老剂 2，炭黑(N330／N660)60，GA补强剂20，填充剂30，增塑剂(DOP／DOA)20，粘合剂(RS／RA)6，促进剂DM0．8，硫化剂CVl5202．5，硫黄0．5。该配方胶料加工工艺与CSM／NBR胶料相同。采用该配方外层胶的成品胶管性能完全合格，现已正式投入生产。     

用行星式螺杆挤出机连续混炼白炭黑填充胶料

研究了用行星式螺杆挤出机连续混炼的白炭黑填充胶料。研究用的原材料为乳聚SBR／白炭黑／硅烷／填料复合胶料，填料与硅烷在复合胶料的制备过程中充分反应，生成了完全硅烷化的白炭黑。由于行星式螺杆挤出机具有极强的冷却能力，所以，所有胶料组分，包括交联剂都可在同一个喂料段计量加入。未发现混炼胶有焦烧现象，连续混炼胶料的性能（如，填料分散和交联性能）以及硫化胶性能（如，拉伸强度和硬度）都与用密炼机混炼的胶料相当。连续混炼的能耗仅为密炼机混炼的1／3。     

RSi-B在航空轮胎胎面胶中的应用研究

研究了偶联剂预分散混合母料PSi—B在航空轮胎胎面胶中的应用，并与普通型偶联剂Si69(液态)进行对比。试验表明，在含沉淀法白炭黑的轮胎胎面胶中用偶联剂预分散混合母料RSi—B代替普通液态Si69偶联剂，可提高偶联剂在胶料中的分散性，得到的胶料损耗角正切值较低，胶料的300％定伸应力、耐疲劳性能和耐磨性得到改善；该胶料用于航空轮胎，轮胎动态／静态性能达到原配方和标准要求。     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况。按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、环氧树脂、不饱和聚酯树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍。     

ICP-MS法测定地球化学样品中As、Cr、Ge、V等18种微量痕量元素的研究

建立了测定地球化学样品中包括As、Cr、Ge、V等18种微量、痕量元素的ICP-MS方法。地化试样用HF-HNO3混酸分解后,以1 1 HNO3溶解干渣。由于制样不使用盐酸,避免了Cl对As、Cr、Ge、V的质谱干扰。用国家一级地球化学标准物质GBW 07309制备溶液优化仪器工作参数,并用于校准。方法测定限(6s)为:0.007~6.4μg/g,精密度(RSD%,n=12)为:29%~9.4%,经过国家一级地球化学标准物质的分析验证,结果与标准值吻合。方法已应用于国土资源调查的试样分析。