新型硫化促进剂TBSI在丁腈橡胶中的应用研究

研究了TBSI在丁腈橡胶中的硫化促进性能，并与NS，CZ，TMTD和DM促进剂进行了对比。结果表明，TBSI作NBR硫化促进剂时，焦烧时间长，硫化胶强度高，但硫化速度较慢。当TBSI与TMTD，DM或M组成活化的次磺酰胺并用体系时，不但保证了焦烧安全性，缩短了正硫化时间，而且还进一步提高了硫化胶的300％定伸应力。经4h过硫化反应后，TBSI／TMTD体系的300％定伸应力保持约80％，而NS不足60％。     

环保型促进剂TBSI在半钢子午线轮胎胎体胶中的应用研究

实验研究了促进剂TBSI在半钢子午线轮胎胎体中的应用效果,并分别与同类促进剂TBBS、DCBS和DIBS进行等量对比。结果表明:促进剂TBSI具有延迟焦烧以及降低硫化速率的特性。在胎体胶中等量的TBSI代替TBBS、DCBS和DIBS,可提高胶料的抗硫化返原性,具有更好的焦烧安全性和硫化平坦性,胶料的动态性能好,生热低,粘合性能优异,其过硫化及老化后的物理性能保持率较高;是一种优良的促进剂品种。     

促进剂TBSI在全钢载重子午线轮胎胎面胶中的应用

研究促进剂TBSI在全钢载重子午线轮胎胎面胶中的应用,并与几种常用促进剂进行对比。结果表明:在胎面胶中加入促进剂TBSI,胶料的焦烧时间和t90均比促进剂CZ和NS胶料延长,比促进剂DZ胶料缩短,硫化胶的300%定伸应力和拉伸强度均与促进剂CZ和NS硫化胶相当,耐磨性能最优;采用促进剂TBSI生产的轮胎耐久性能优于采用促进剂NS生产的轮胎。     

环保型促进剂TBSI在胶料中的应用研究

促进剂TBSI属于伯胺类促进剂,硫化反应时不产生易致癌的亚硝胺。研究环保型促进剂TBSI在胶料中的应用性能和环保性能。结果表明：与促进剂DCBS,TBBS和CBS相比,环保型促进剂TBSI的储存稳定性更好,其胶料的硫化反应活化能更大,焦烧时间更长,加工安全性和抗硫化返原性较好,其更加适用于厚制品,可以替代促进剂TBBS/防焦剂CTP单独使用;促进剂TBSI及其胶料的叔丁胺和挥发性有机化合物的质量分数较小,环保性能更好。     

促进剂（TBSI）在全钢巨型载重子午线工程胎胎面的应用

试验研究了促进剂（TBSI）在全钢巨型载重子午线工程胎胎面胶中应用效果,并分别和次磺酞胺同类促进剂TBBS、DCBS、CBS、MBS在胎面中进行等量的比较。结果表明：在胎面胶中促进剂TBSI的硫化速度比促进剂TBBS、CBS、MBS慢,但比促进剂DCBS快,具有延迟焦烧以及降低硫化速率的特性。等量的TBSI代替TBBS、DCBS、CBS和MBS在胎面胶其过硫化和老化后的物理性能、生热、磨耗都最好。     

苯并噻唑次磺酰胺类促进剂对钕系顺丁橡胶胶料性能的影响

研究苯并噻唑次磺酰胺类促进剂TBBS,CZ和DZ对钕系顺丁橡胶(Nd BR)胶料性能的影响。结果表明:加入促进剂CZ的Nd BR胶料的门尼粘度和松弛面积最大;加入促进剂CZ,TBBS和DZ的胶料的焦烧时间和正硫化时间依次延长;促进剂DZ易引起Nd BR"欠硫",从而降低硫化胶的物理性能、弹性、耐磨性能和压缩生热性能,但能显著提高硫化胶的抗裂口增长性能。     

促进剂TBSI在全钢载重子午线轮胎中的应用

研究促进剂TBSI在全钢载重子午线轮胎上三角胶和胎体胶中的应用。在上三角胶配方中以促进剂TBSI等量替代促进剂NS，胶料的焦烧时间延长，硫化速度减慢，抗硫化返原性能提高，硫化胶的强伸性能及撕裂性能较优。在胎体胶配方中以1份促进剂TBSI替代1．25份促进剂DZ，胶料的焦烧时间延长，t90缩短，硫化胶的拉断永久变形减小，H抽出力相当。     

不同促进剂气味分析及低气味替代方案研究

测试4种促进剂TBSI,TBBS,CBS,CBBS的气味,并研究促进剂CBBS不同用量或与硫黄不同配比在橡胶中的应用效果,探索促进剂TBSI,CBBS替代促进剂CBS,TBBS的低气味解决方案。结果表明,促进剂TBSI可改善胶料在加工过程中的气味,但在硫化胶及成品中对气味的改善有限,而促进剂CBBS可同时改善加工过程和轮胎成品的气味。     

促进剂TBBS在胶料中的分散性研究

研究促进剂TBBS粒径分布对全钢载重子午线轮胎胎面胶性能的影响。结果表明：促进剂TBBS粒径分布对胶料门尼粘度、门尼焦烧时间、硫化速度及导热性能的影响较小;粒径分布因数最大的促进剂TBBS在胶料中的分散性最好,硫化胶的拉伸性能、耐热性能和耐磨性能最佳,回弹值最大,生热最低,60 ℃时的损耗因子最小。     

橡胶促进剂TBSI的合成及其应用前景

全成了橡胶促进剂TBSI的几种合成路线，促进剂TBSI不产生毒性物质亚硝胺，是一种很有前途的产品，有替代目前常用促进剂TBBS、NOBS、DIBS、DZ、CZ等的趋势。     

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。