打火机专用SAN树脂工业化开发生产

介绍了15kt/a本体苯乙烯－丙烯腈（SAN)装置试生产打火机专用SAN树脂的生产情况，确定了主要工艺配方及参数：进料组成为乙苯浓度为6％－11％、丙烯腈浓度为30％－42％，聚合温度130－145℃、压力0．40－0．46MPa，搅拌转速60－90r/min，脱挥温度215－250℃、压力小于等于4kPa；并对影响打火机志用SAN树脂性能的主要工艺条件及因素进行了讨论。结果表明，聚合温度、结合丙烯腈含量、熔体流动指数、转化率是影响打火机专用SAN树脂生产工艺及产品性能的主要因素。     

Dow 化学公司本体法工艺及部分ABS产品

综述了美国Dow化学公司本体法生产丙烯腈－丁二烯－苯乙烯三元共聚物（ABS）工艺的演进过程。介绍了该公司根据产品特点和国外市场情况制定的推销策略。通过了解Dow化学公司改善其产品多样性的途径，为我国本体法生产ABS产品及其后续产品的开发应用提供参考。     

丙烯腈—丁二烯橡胶的水解

橡胶制品不仅用在非极性烃类中正在增长，而且在高温高压下的极性含有介质中的利用也在增长，这导致极性橡胶特别是丁腈橡胶的使用增加，因此本文考虑硫化丁腈橡胶水解，以研究水解与分子网热稳定性的关系，所用硫化剂包括1）硫黄及2－巯基苯并噻唑，2）四甲基秋兰姆二硫物，3）过氧化二异丙苯（硫化至近似相等的网络密度）。     

提高在装DB—83催化剂活性的探讨

本文讨论了新、旧 DB-33催化剂在不同温度、配比下活性变化情况,以及如何提高在装催化剂的活性。将反应温度从450℃提高到470～480℃,氨比从1.05增大到1.2,空气比从9.5增大到11,丙烯转化率可提高2％,丙烯腈单收可提高3%左右。     

ABS/SAN/中粘度PMMA三元共混物的性能研究

制备不同配比的丙烯腈－丁二烯－苯乙烯（ABS）／苯乙烯－丙烯腈（SAN）／中粘度聚甲基丙烯酸甲酯（PMMA）合金，分别测试其缺口冲击强度、拉伸强度、热变形温度、熔体流动指数等，结果表明：ABS／SAN可以引发中粘度PMMA产生大量的银纹，从而大幅度提高共混物的冲击强度；引入中粘度PMMA可以提高ABS／SAN的耐热性能；添加中粘度PMMA，合金的流动性能呈现下降的趋势。     

国产丙烯腈催化剂的工业应用

本文对视网膜色素变性及正常对照组各３０例进行了眼底荧光造影，结果观察组视网膜中央动静脉较对照组明显狭窄，视网膜循环时间较对照组明显延长，提示视网膜色素变性病人眼底微循环障碍，揭示了该病中医发病机理为血瘀，主张视网膜色素变性病人中医治疗以活血化瘀，通经活络为主要治法。     

SAN树脂的相对分子质量对ABS树脂力学性学的影响

通过将三种不同相对分子质量的SAN树脂与同一种ABS接枝粉料进行熔融共混，测度共混物的力学性能，比较了三种SAN各自的增韧特性。实验结果表明：SAN树脂的相对分子质量越高，制得的ABS树脂的冲击强度和断裂伸长率越高，SAN树脂的相对分子质量对ABS 脂的拉伸强度没有影响，SAN树脂的低聚物和挥发成分对位伸强度影响大。将高相对分子质量SAN和低相对分子质量SAN按不同比例混合后，再与ABS接枝粉料以18份橡胶共混，考察了高相对分子质量SAN的加入对共混物冲击强度和熔体流体速率的影响，在SAN树脂中加入高相对分子质量SAN树脂后，可以提高ABS树脂的冲击强度，显著降低加工流动性。     

采用分子模拟技术研究开发高耐热ABS

利用分子模拟技术建立了丁二烯胶乳、苯乙烯－丙烯腈共聚物、丙烯腈－丁二烯－苯乙烯三元共聚物（ABS）粉料和ABS树脂模型，利用这些模型在计算机上进行了高耐热ABS树脂的研究，并利用实验进行验证。结果表明：开发的高耐热ABS（以HH7．3为例）的拉伸强度为58MPa，弯曲强度为100MPa，弯曲模量为2834MPa，悬臂梁冲击强度为206J／m，热变形温度为100℃，熔体流动指数为14．9g/10min，洛氏硬度为115，维卡软化点为112℃，其性能超过国外同类产品。     

工艺条件对玻纤增强ABS材料力学性能的影响

通过对30％玻纤增强ABS材料微观形态观察和分析，探寻了加工工艺条件和加入马来酸酐接枝ABS对材料力学性能的影响，结果表明，加入马来酸酐接枝ABS可明显改善基体材料与玻纤的粘结状况，使力学性能得到较大幅度的变化，加工温度的提高和适当的螺杆转速可提高玻纤在基体中的分散性，尽管玻纤分散性较好的材料其玻纤含量较低，玻纤长度较短，但仍使力学性能得到改善。     

PVC/ABS共混体系流变性能的研究

用毛细管流变仪对PvC／ABS共混体系的流变性能进行了研究。结果表明，该体系的流动符合假塑性流体的流动规律。当ABS含量为o一50％时，共混体系的表现粘度随ABS的含量的增加而降低；当ABS的含量大于50％时，共混体系的表现粘度变化不大。同时ABS的种类和PVC相对分子质量的大小也影响共混物的表观粘度。     

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。