汽车点火线绝缘式护套的研制

汽车点火线绝缘式护套的基本配合为：生胶采用氯磺化聚乙烯（ＣＳＭ４５）／乙烯－醋酸乙烯共聚物（ＥＶＡ４０）［（５５－６５）／（３５－４５）］并用体系；硫化剂为过氧化物，如１，４－双叔丁基过氧化二异丙苯；补强填充体系主要为沉淀法硫酸钡（５０－６０份），并辅之以锻烧陶土和ＬＥＥ白滑粉（共４０份左右）；防老剂体系为防老剂ＲＤ／ＤＬＴＤＰ并用体系（４．５－５．０份）；加工助剂有合成酯类增塑剂ＷＢ３５０、微晶石蜡和均化剂ＷＢ２２２（饱和脂肪酸酯）等。胶料的物理机械性能、介电性能及耐热性、耐油性、低温柔软性等满足设计及ＩＥＣ－５０２（１９９４）标准中有关１－３０ｋＶ挤包高聚物固体绝缘电力电缆的性能要求，且加工性能良好。     

采煤机电缆半导电EVA/CPE屏蔽层的研制

采煤机（屏蔽型）电缆的半导电橡胶屏蔽层的胶料配方为：乙烯－醋酸乙烯酯共聚物（ＥＶＡ）９０；氯化聚乙烯（ＣＰＥ）１０；过氧化二异丙苯１－３；三聚异氰酸三烯丙酯２－５；２０＃机油１５．０；固体石蜡８．０；环氧酯类增塑剂适量；乙炔炭黑４０－６０；高耐磨炭黑３０；轻质碳酸钙适量：抗氧剂３００＃１．５；硬脂酸盐１．０，含胶率４５％。ＥＶＡ．ＣＰＥ在开炼机上共混，胶料混炼可在开炼机上或密炼机中进行，本胶料与线芯绝缘胶料是一次挤出成型进入硫化管中硫化的。胶料及成品性能均满足ＧＢ７５９４—８７和ＧＢ１２９７２．１—９１标准。     

矿用电缆阻燃防腐橡胶护套的研制

矿用电缆阻燃防腐橡胶护套的配方设计为；高聚物选择氯磷化聚乙烯／氯化聚乙烯／氯醚橡胶并用，并用比为（４０—６０）／（２０—３０）／（２０—３０）较好；硫化剂选择过氧化物，共交联剂选择ＴＡＩＣ和ＨＶＡ－２；补强填充剂选择硫酸钡、水洗陶土、滑石粉、粉石英、半补强炭黑和高耐磨炭黑并用；阻燃剂选择三氧化二锑、磷酸酯类、氢氧化铝、含卤素类化合物等二种或二种以上阻燃剂并用；增塑剂选用含氯、含磷类阻燃性增塑剂；防老剂选用防老剂ＮＢＣ／ＭＢ／ＲＤ并用。胶料采用逆混法混炼加工，混炼温度１００—１１０℃。产品性能符合ＧＢ１２９７２—９１，ＧＢ７５９４—８７和ＧＢ１２６６６—９０标准要求。     

动态硫化浅色PVC/BR热塑性弹性体密封条的研制

用动态硫化法制备浅色ＰＶＣ／ＢＲ热塑性弹性体密封条的配方为：ＰＶＣ（聚合度为１３００）１００；ＢＲ２７；ＮＢＲ３；增塑剂ＤＯＰ６５；稳定剂２；防老剂４０１０１；硬脂酸０．５；氧化锌０．５；碳酸钙４０；陶土２０；促进剂ＴＭＴＤ３；促进剂ＣＺ０．５。该配方性能基本符合橡胶密封条国家标准ＧＢ／Ｔ１２４２１—１２４２６—９０。密封条最佳挤出条件为：口型温度１５０一１６０℃，螺杆转速４０—５０ｒ·ｍｉｎ（－１）。     

氢氧化镁填充的VAMAC无卤低烟阻燃电缆胶料的配方与性能

在乙烯－丙烯酸酯橡胶（ＶＡＭＡＣ）无卤低烟阻燃电缆胶料配合中，主要填料氢氧化镁及其表面处理剂硬脂酸锌的用量是关键，硫化体系也较重要。胶料优化配方为：ＶＡＭＡＣ１００；２，５－二甲基－２，５－双（叔丁基过氧）己烷３．０～３．３；Ｎ，Ｎ′－间亚苯基双马来酰亚胺和三（甲基丙烯酸三羟甲基）丙酯０．８～１．０。硬脂酸锌处理过的陶土＋ＬＥＥ白滑粉５０～６０；加工助剂１２～１４；硬脂酸锌１．２～１．４；氢氧化镁４３～４７；其它６～７。胶料阻燃、低烟和物理机械性能良好，成品电缆通过ＧＢ１２６６６—９０燃烧试验，且完全满足设计和ＩＥＣ５０２（１９９４）性能要求     

纺织牵伸胶辊用NBR/PVC胶管的研制

纺织牵伸胶辊用ＰＶＣ改性的丁腈橡胶（ＮＢＲ）胶管主要配合为：ＮＢＲ／ＰＶＣ为７０／３０，硫化体系组成为ＤＢ／促进剂ＤＭ／氧化镁／氧化锌（１．５／２／５／４），补强填充体系为白炭黑／明胶／钛白粉［（３０－５０）／３０／２０］，防老剂为酚类防老剂。ＮＢＲ／ＰＶＣ的共混温度为（１６５±５）℃，操作在１０ｍｉｎ内完成。明胶用１：１．２的开水溶解，并通过８０目筛后再在开炼机上加入，操作时间约２５ｍｉｎ。胶料物理性能和成品使用性能满足技术要求。     

丁腈橡胶－40／三元共聚型氯醚橡胶并用的研究

对丁腈橡胶－４０（ＮＢＲ－４０）与三元共聚型氯醚橡胶（ＣＨＣ）进行了并用研究．发现二者之间的相容性良好。ＮＢＲ－４０／ＣＨＣ并用比为８０／２０时，胶料的综合物理性能较好；为７０／３０时．胶料耐４０＃机油的性能最好；耐四氯化碳溶剂的性能随并用比的减小（ＣＨＣ用量增加）而提高。胶料硫化体系以过氧化物硫化体系［过氧化二异丙苯（ＤＣＰ）／硫黄／四氧化三铅／促进剂ＮＡ－２２］最佳，补强剂选用中超耐磨炭黑。     

EPDM/CIR防腐蚀衬里的研究

对ＥＰＤＭ／氯化丁基橡胶（ＣＩＲ）防腐蚀衬里胶料研究表明，ＥＰＤＭ／ＣＩＲ防腐蚀衬里胶料具有优异的耐５０℃次氯酸钠溶液（浓度为１０％）、１０５～１２０℃硫酸溶液（浓度为２０％～７０％）、１００℃磷酸溶液（浓度为８５％）腐蚀性能；胶料工艺性能好，压延胶片挺性好、收缩率小、表面光滑和平整；衬里与基体碳钢的粘合强度达５．２ｋＮ·ｍ－１；衬里接头、弯曲及拐角部位无内应力。     

丁腈橡胶/聚氯乙烯共混型纺化纤胶圈胶料的研制

丁腈橡胶（ＮＢＲ）／聚氯乙烯（ＰＶＣ）共混型纺化纤胶圈胶料可通过调整增塑剂ＤＢＰ用量（２５份）、白炭黑用量（５份）使ＮＢＲ／ＰＶＣ之比达１００／８０，而胶料的拉伸强度、扯断伸长率、３００％定伸应力等均较好，邵尔Ａ型硬度达到控制指标（７２度）。胶料的挤出条件为：挤出机机头温度７０—８０℃，螺杆转速３５ｒ·ｍｉｎ－１．     

胶易素T－78在轮胎胶料中的应用──（一）对胎面胶制造工艺及物理性能等的影响

泛用型橡胶加工助剂──胶易素Ｔ－７８用于ＮＲ／ＳＢＲ—７０／３０、炭黑用量约５０份的胎面胶中，用量为１．５份时，胶料门尼粘度下降５个单位以上。按炭黑用量的３％添加胶易素，可以降低每段混炼能耗，缩短整个混炼周期近１／３。适量添加胶易素的胶料经冷喂料挤出后，表面光滑，致密性好，无气孔；与不含胶易素胶料相比，硫化特性、物理性能及老化性能均无明显变化。     

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.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008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、不饱和聚酯树脂、环氧树脂)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.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006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生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。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（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。