影响橡胶整芯难燃输送带粘合强度的因素

研究了乳液法ＰＶＣ（简称乳ＰＶＣ）悬浮法ＰＶＣ（简称悬ＰＶＣ）和粘合剂用量，阻燃增塑剂，带芯含棉量等因素对橡塑整芯难燃输送带粘合性能的影响，结果表明，在覆盖胶中可用２０～２５份乳ＰＶＣ等量替代ＣＲ／ＮＢＲ／氯化聚乙烯（ＣＰＥ）（４０／４０／２０）配方体系中的ＮＢＲ，也可用４０～６０份悬ＰＶＣ等量替代ＮＢＲ配方体系中的ＮＢＲ，浸渍液中增塑剂选择ＺＲＳ－５０／ＤＯＰ／４２％氯化石蜡并用最适宜，覆盖胶中     

定向短纤维弹性体复合材料围油栏的研制

介绍了以尼龙６短纤维为骨架材料,以ＣＲ／ＮＢＲ并用体系为主体材料的定向短纤维弹性体复合材料（ＯＳＦＥＣ）围油栏的研制。ＯＳＦＥＣ配方确定为：ＣＲ９０;ＮＢＲ１０;尼龙６短纤维４０;炭黑Ｎ２２０２０;炭黑Ｎ６６０２０;硫化剂９;粘合剂ＲＡ／ＲＳ／白炭黑２０５;增塑剂１６;促进剂１;防老剂１５。其中尼龙６短纤维用异氰酸酯溶液预处理效果较好。ＯＳＦＥＣ围油栏与织物芯橡胶型围油栏相比物理性能和使用性能好、生产成本低。     

NBR改性HPVC鞋用材料的研制

研究了ＮＢＲ对高聚合度ＰＶＣ（ＨＰＶＣ）进行改性制备的非交联型ＨＰＶＣ／ＮＢＲ热塑性鞋用材料，考察了ＨＰＶＣ和ＮＢＲ并用比、填料、增塑剂及共混温度对材料性能的影响。结果表明，当ＨＰＶＣ／ＮＢＲ＝８７／１３、增塑剂ＤＯＰ用量为７０份、填料用量为２０～２５份、其它助剂适量及共混温度为１７０℃时，制得的鞋用材料性能良好，达到了ＧＢ４４９２—８４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）。     

用R131作多功能配合剂的NBR/PVC并用胶砂浆泵衬胶研制

探讨了用烷基改性酚醛树脂（Ｒ１３１）作多功能配合剂制造ＮＢＲ／ＰＶＣ并用胶砂浆泵衬胶的方法。ＮＢＲ／ＰＶＣ并用胶砂浆泵衬胶的配方确定为：ＮＢＲ７０;ＰＶＣ３０;Ｒ１３１ ７．０;硫黄 １．１;共硫化剂ＤＭＧ ２．５;活性剂 ３．５;促进剂ＤＭ／ＣＺ ２．７;防老剂４０１０ＮＡ／Ｄ １．２;中超耐磨炭黑 ４６;增塑剂ＤＯＰ ５．０;石蜡 ０．６。Ｒ１３１在胶料混炼时分段加入。砂浆泵部件的制备工艺是：     

PVC/SBR共混改性的研究

对于非相容性ＰＶＣ／ＳＢＲ（１００／２０）共混体系，相容剂、增塑剂、填料和硫化剂用量以及返炼次数对共混体物理性能均有影响。试验结果表明：ＮＢＲ－２６是ＰＶＣ／ＳＢＲ共混体的良好相容剂，可以显著改善共混体的力学性能，用量以６份为宜。增塑剂ＤＯＰ为１００份、碳酸钙为８０份、硫黄为０．１份时，ＰＶＣ／ＳＢＲ共混体可获得良好的综合性能。返炼次数对共混体性能影响不大。     

芳烃油在NBR及其并用胶胶料中的应用

芳烃油等量替代增塑剂ＤＢＰ在ＮＢＲ和ＮＢＲ／ＳＢＲ及ＮＢＲ／ＣＲ胶料中的应用试验结果表明,采用芳烃油对胶料的性能无不良影响。芳烃油等量替代增塑剂ＤＢＰ在ＮＢＲ胶管内层胶和ＮＢＲ／ＳＢＲ耐油胶板胶料中的实际应用试验结果表明,采用芳烃油有利于降低胶料成本。     

橡塑旋流器的研制

采用橡塑［ＮＢＲ／ＰＶＣ为（６０－５０）／（４０－５０）］并用材料制造旋流器。补强剂采用中超耐磨炉黑（７０－７５份）；使用促进剂ＤＭ／ＴＴ和硫黄硫化体系，同时加入含过氧化物的混合物ＤＭＧ硫化效果最好；增塑剂用１０－１５份；防老剂用４０１０ＮＡ。并用工艺采用增塑剂部分加入到ＰＶＣ中制成糊状树脂的方法。共混时间一般为２０－３０ｍｉｎ。该产品具有优异的耐磨性［磨耗量（１．６１ｋｍ）小于０．０４ｃｍ３］、较高的拉伸强度（１９ＭＰａ）和硬度（邵尔Ａ型硬度９５度），可直接替代衬胶铸铁旋流器。     

有机过氧化物动态硫化HPVC/SBR共混体系力学性能的研究*

采用有机过氧化物硫化体系,通过动态硫化方法制备高聚合度聚氯乙烯（ＨＰＶＣ）／ＳＢＲ共混型热塑性弹性体,测试共混物硫化胶的力学性能。结果表明,当ＨＰＶＣ／ＳＢＲ并用比为８０／２０,过氧化二异丙苯（硫化剂ＤＣＰ）用量为１５份时,加入１～３份不同种类的相容剂,可改善共混物的力学性能,其中以氯化聚乙烯（ＣＰＥ）的作用效果最好;返炼次数对共混物力学性能没有明显影响     

PVC／NBR再生胶共混型热塑性弹性体的研究

用ＰＶＣ与ＮＢＲ再生胶高温机械共混,制备了具有交联结构的、Ｔｇ约１０℃的热塑性弹性体。讨论了共混比、第三组分改性剂合成橡胶（ＮＢＲ,ＰＵ,ＣＲ,ＣＰＥ）、５种硫化体系、填充剂（炭黑、白炭黑、重质ＣａＣＯ３）、增塑剂邻苯二甲酸二辛酯等因素对性能的影响。结果表明：ＰＶＣ６０份,ＮＢＲ再生胶４０份,ＮＢＲ３６０４２０份,硫磺０．５份,促进剂ＴＭＴＤ和促进剂ＣＺ各０．６￣０．９份及适量重质ＣａＣＯ３和增塑     

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.     

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.     

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。     

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.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.