聚丙烯汽车顶板专用料的研制

探讨了使用双螺杆挤出机研制PP汽车顶板专用料的配方和工艺,并分析了增韧剂、矿物填料对最终产品性能的影响。结果表明,添加增韧剂可改善PP汽车顶板专用料的韧性;加入矿物填料可以改善PP汽车顶板专用料的刚性和耐热性;当EPDM的质量分数为10％～20％、CaCO3的质量分数为40％时,PP汽车顶板专用料的性能最好,经用户试用效果很好。     

耐候性PP的研制

以聚烯烃弹性体（POE）为增韧材料、DICPK为结晶成核剂、BsSO4为无机填充剂，研制了耐候改性PP专用料。结果表明，当POE用量为5份、DICPK用量为0．3份、BaSO4用量为30份时，所得专用料能够满足耐候改性PP专用料的性能要求。     

微型汽车仪表盘专用料的研制

以聚丙烯PP(F401)为基体树脂,线型低密度聚乙烯( LLDPE)为增韧剂,无机复合矿粉为填料制备得到综合性能优异,成本低廉的汽车仪表盘专用料.研究了线型低密度聚乙烯(LLDPE)、无机复合矿粉及其用董对材料性能的影响.结果表明:在PP(F401)基体中,加入质量分数为5%～7%的LLDPE 7144,20%的经活化处理的无机复合矿粉,并配以适量的助剂制得的PP改性专用料的力学性能和加工性能都能达到五菱微型汽车仪表盘专用料的要求.     

共聚聚丙烯EPF30R作汽车保险杠专用料研究

在共聚聚丙烯新产品EPF30R中加入少量的EPS30R为基体对脂，用POE（辛烯-乙烯共聚物）为增韧剂、PP-g-MAH为相容剂、滑石粉为填料制得性能符合要求的汽车保险杠专用料，并研究了增韧剂、相容剂、无机填料的含量对共混材料性能的影响。结果表明：EPF30R/EPS30R质量比为85/15，POE用量为15份，相容剂用量10份，无机填料为12份时，专用料的性能达到国内外同类产品的指标。     

汽车保险杠PP专用料新产品推陈出新

保险杠是最具代表性的汽车零部件。目前国外多采用弹性体改性塑料生产保险柯，这种保险杠已占汽车保险杠总用量的70％。国外广泛应用的汽车保险杠聚丙烯（PP）专用料是通过在反应釜中进行共聚合，同时将PP与（乙烯／丙烯）共聚物等其混生产的，这种PP专用料性能优异。国内采用机械共混改性材料，其生产方法是采用双螺杆挤出机等将PP、聚乙烯（PE）、橡胶、无机填料等共混造粒。     

音箱用聚丙烯专用料的研制

以聚烯烃弹性体（POE）和（乙烯/丙烯/二烯）共聚物（EPDM）为增韧剂，马来酸酐接枝聚丙烯（PP-g-MAH)为增容剂，滑石粉为无机填料研制音箱用聚丙烯（PP）专用料。当PP-g-MAH用量为10份。滑石粉为120份，EPDM为15份。POE为5份时，所得PP专用料的综合性能最佳。完全达到了音箱用料的要求。     

含羟基和/或羧基的橡胶与疏水化的氧化硅酸盐类填料的橡胶混合物

由德国拜耳公司申请的专利 (专利号　0 0 1 2 845 3 ,公布日期　 2 0 0 1 0 5 3 0 )“含羟基和 /或羧基的橡胶与疏水化的氧化硅酸盐类填料的橡胶混合物”由含羟基和 (或 )羧基 (质量分数为 0 0 0 1～ 0 0 3 )的橡胶及并用胶 (1 0 0份 )、疏水化氧化和(或 )硅酸类填料 (5～ 5 0 0份 )、助剂和交联剂组成。本发明胶料适用于制备物理性能、动态阻尼性能和耐湿滑性能好的橡胶制品含羟基和/或羧基的橡胶与疏水化的氧化硅酸盐类填料的橡胶混合物$杭州市科技情报研究所@王元荪…     

橡胶加工专利

一、轮胎防止硬度增加和冰上打滑的充气轮胎Jpn.Kokai Tokkyo Koho JP 2 0 0 0 2 11,319(Cl.B6 0 C11/0 0 )文中提到的轮胎包括二个部分 :胎冠及胎面。其中胎冠由含 5份～ 5 0份活性填料增塑剂 (A)的胶料制成 ,胎面由含软化剂 (平均用量为增塑剂 A的 1.1～ 3倍 )的胶料制成。胎冠胶料配方为 6 0份 1号棱纹烟片胶 (RSS1) ,4 0份丁二烯橡胶(Nipol BR12 2 0 ) ,2 0份炭黑 ,30份白炭黑 ,1.2份硫黄及 2 0份Me3 Si封端的聚甲基乙氧基 (甲基丙氧基化丙基 )硅氧烷。胎面胶料配方为 :5 0份 RSS1,2 5份 Nipol BR12 2 0 ,2 5份 Nipol15 0 2 …     

轮胎胎面

本发明涉及至少部分由橡胶组合物形成的轮胎胎面，该橡胶组合物至少基于如下物质：(1)二烯烃弹性体；(2)作为增强填料的大于50份的无机填料；(3)2～15份，(无机填料／二烯烃弹性体)偶合剂；(4)1～10份亚甲基受体；(5)0．5～5份亚甲基给体。在轮胎的机械磨合之后，该轮胎具有向其中预定的(自动适应)，从运转胎面表面向内部径向增加的刚性梯度。     

蓄电池用共混改性PP的研制

以均聚PP为主要原料,共聚PP、HDPE、SBS为改性剂,用挤出共混法研制蓄电池用共混改性PP塑料。通过对原材料的选择和配方试验,确定了共混物的基本配方:均聚PP100份,共聚PP10～15份,HDPE5～10份,SBS 3～5份,抗氧剂和紫外线吸收剂0.4～0.6份,其它2～3份,所得多元共混物的冲击强度比纯PP提高7～9倍,其他性能无明显下降,完全满足了使用要求。     

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.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

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。