氢氧化镁卦公的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双己烷３．０－３．３．Ｎ’Ｎ－间亚基双为酰亚胺和三丙酯０．８－１．０。     

配合剂对EPDM阻燃电缆胶料性能的影响

介绍硫化剂ＤＣＰ、共硫化剂ＴＡＩＣ（异氰脲三烯丙酯）和ＨＶＡ２（Ｎ，Ｎ′间亚苯基双马来酰亚胺）、分散剂硬脂酸及卤素和无卤阻燃剂对ＥＰＤＭ阻燃电缆胶料性能的影响。硫化剂ＤＣＰ用量为３份左右、共硫化剂ＴＡＩＣ／ＨＶＡ２并用（并用比为１／０．５）、硬脂酸用量较大、卤素或有机氮阻燃剂用量适中，则ＥＰＤＭ阻燃电缆胶料的物理和电性能较好。     

耐辐射无卤阻燃绝缘EPDM电缆胶料的研究

本研究耐辐射无卤阻燃绝缘ＥＰＤＭ电缆胶料的主要配合为：生胶为乙烯含量较高的１，４－己二烯型电绝缘级ＥＰＤＭ（１００份）；阻燃剂为氢氧化铝／氢氧化镁／三氧化二锑并用体系（９５～１００份），其中氢氧化铝和氢氧化镁用硬脂酸锌进行表面处理；补强填充剂为煅烧陶土、ＬＥＥ白滑粉、ＰＹ－Ⅱ型水白云母粉和钛白粉并用体系（１０５～１１５份）；硫化剂为２，５－二甲基－２，５－二（叔丁基过氧化）己烷（４～５份），共硫化剂为三羟甲基丙烷三甲基丙烯酸酯和Ｎ，Ｎ′－间亚苯基双马来酰亚胺并用体系（１．６～１．８份）。胶料和成品的物理机械性能、介电性能、阻燃性能和耐环境性能（耐热性、耐蒸汽性和耐辐射性）达到ＩＥＣ５０２（１９９４）和ＩＥＣ１８Ａ（１９８１）（ＣＯ）标准。     

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。     

矿用电缆阻燃护套胶料的研制

采用氯磺化聚乙烯（ＣＳＭ－４５）作主体材料，并用８～１２份（重量份，下同）低门尼粘度的ＥＰＤＭＤＸ－０２和２０～２５份乙烯／醋酸乙烯（ＥＶＡ）；分别用硬脂酸锌处理的煅烧陶土和氢氧化铝作填充补强剂和阻燃剂；ＤＰＴＴ／ＨＶＡ－２作共硫化剂制作电缆护套。成品电缆具有良好的机械性能及低烟低酸性，产品性能可满足使用要求     

彩色低烟低卤CSM/EPDM电缆护套胶料的研制

研制出了一种耐环境性较好的彩色低烟低卤氯磺化聚乙烯（ＣＳＭ）／ＥＰＤＭ电缆护套胶料。得出的胶料优化配方为：ＣＳＭ／ＥＰＤＭ（８５～９０）／（１５～１０）;硫化体系（硫化剂ＤＣＰ／共硫化剂ＨＶＡ２／共硫化剂ＴＡＩＣ）６５～７０;补强填充剂（ＬＥＥ白滑粉／煅烧陶土／轻质碳酸钙）１００～１１０;三盐基马来酸铅３５～４０;金红石型钛白粉３０～４０;耐辐射剂（二苯胺类／磷酸苯酯类）１５～２０;阻燃剂（氢氧化铝／氢氧化镁／三氧化二锑）１００～１１５;其它２０～４０。胶料及电缆成品性能满足ＩＥＣ５０２（１９９４）标准及核电站使用要求。     

吉尔130汽车发动机供油系统O形密封圈的研制

含有活性添加剂的Ｍ－８＿Ｂ１和Ｍ－８＿Ｔ２Ｋ的两种油品对ＮＢＲ－１８Ｏ形密封圈有一定的副作用，通过调整ＮＢＲ胶料硫化体系（硫黄０．３；促进剂ＣＺ１．５；促进剂Ｍ０．５；硫化剂ＤＣＰ２．０）和补强剂炭黑的用量（高耐磨炭黑５５；喷雾炭黑４０）．可以使其满足抗两种油品侵蚀的性能要求。另外，在ＮＢＲ胶料中添加２５份耐寒增塑剂（邻苯二甲酸二丁酯１０；癸二酸二辛酯１５）．可提高胶料的耐低温性能，并使脆性温度降至－６５℃以下。     

挂车制动阀橡胶膜片的研制

简介了挂车制动阀橡胶膜片（以下简称膜片） 的研制。膜片的胶料配方确定为：ＮＢＲ（牌号Ｎ２４０Ｓ）　１００;氧化锌　５;硬脂酸　１;防老剂　３;喷雾炭黑＋ 高耐磨炭黑　８０ ;增塑剂ＤＯＳ　１０;硫黄　０－３ ;促进剂　２－５ ,合计　２０１－８。硫化胶性能符合德国ＷＡＢＣＯ公司的ＪＥＤ７０８０ Ｍ０ 标准。膜片的骨架材料选用厚度为（０－２６±０－０３） ｍｍ 的聚酯帆布。产品通过中国重型汽车集团公司技术中心的台架试验。     

测定亚硝胺的电位型霉变玉米胚组织传感器研究

利用霉变玉米胚组织研制了对二甲基亚硝胺（ＤＭＮＡ）、二乙基亚硝胺（ＤＥ－ＮＡ）和甲基苄基亚硝胺（ＭＢＮＡ）等选择性响应的新型组织传感器。该传感器灵敏度高,重现性好,选择性好,其线性范围２．０×１０－６～２．０×１０－３ｍｏｌ·Ｌ－１,检测下限１．３×１０－７ｍｏｌ·Ｌ－１,斜率为５９．２（３０°Ｃ,ｐＨ７．５）。     

EPDM／CPE并用胶料的阻燃性与电绝缘性研究

主要探讨了ＥＰＤＭ／ＣＰＥ并用比、阻燃剂（Ｓｂ２Ｏ３、十溴联苯醚）的配比、填料品种及用量、硫化剂ＤＣＰ及助交联剂ＴＡＩＣ等因素对ＥＰＤＭ／ＣＰＥ并用胶料力学性能、阻燃性能及电性能的影响,结果表明：选择ＥＰＤＭ４０,ＣＰＥ６０．３ＰｂＯ１．２,２ＰｂＯ１．２,ＤＣＰ２～３,ＴＡＩＣ１,滑石粉３０,Ｓｂ２Ｏ３１０～１５,ＺＲ－１０２０～３０,ＳＡ１,ＺｎＯ５,可制得综合性能较好的ＥＰＤＭ／ＣＰＥ并用胶     

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。