SAN及MBS改性氯化聚氯乙烯的研究

研究了稳定体系、ＳＡＮ及ＭＢＳ对氯化聚氯乙烯共混物力学性能、耐热性及加工行为的影响。结果表明：采用钡／镉复合稳定体系可获得较好的综合性能；提高ＭＢＳ用量可以增加共混物的冲击强度和断裂伸长率，耐拉伸强度下降；ＳＡＮ用量增加，共混物的拉伸强度上升，而冲击强度和断裂伸长率下降，加入ＳＡＮ和ＭＢＳ。共混物的耐热性略有下降，但能改善共混物的辊上加工行为。     

提高PC／SMA合金力学性能研究

加入少量聚（２－乙基－２－２恶唑啉）于ＰＣ／ＳＭＡ共混体系中，能增加ＰＣ和ＳＭＡ的相容性，形成良好的界面粘结，提高了ＰＣ／ＳＭＡ合金的力学性能，尤其是低温冲击强度提高明显。     

新型耐热级SMA/ABS工程塑料合金

介绍耐热级ＳＭＡ／ＡＢＳ工程塑料合金的制备和性能,研究了ＳＭＡ、ＡＢＳ配比、增韧剂对合金性能的影响。结果表明,ＳＭＡ的加入使冲击强度下降,但加入增韧剂可提高合金的冲击强度达到或超过ＡＢＳ水平,当ＳＭＡ∶增韧剂∶ＡＢＳ＝５０∶２５∶２５时,缺口冲击强度可达２００Ｊ／ｍ。已推出通用级Ｅ－２２０用于ＰＣ改性、耐热级Ｈ２５１用于耐热要求的家电、玻纤增强级２５１Ｇ用于汽车零部件     

抗静电PC/ABS合金材料的研究

研究了聚碳酸酯（ＰＣ）与ＡＢＳ共混体系的抗静电性能及其影响因素。结果表明：二价的烷基苯磺酰盐是ＰＣ／ＡＢＳ合金材料较好的抗静电剂,可降低材料的表面电阻率和体积电阻率;在一定范围内,抗静电剂用量越多,抗静电效果越好;用马来酸酐接枝聚乙烯作增容剂能提高ＰＣ／ＡＢＳ合金的抗静电性能;学能改善共混物的相容性,从而提高合金材料的冲击强度。     

中国合成树脂及塑料文摘

每期文摘的题目均按汉语拼音顺序排列，英文按其字母顺序排列在汉字之前，数字开头的题目排在最前面。　　ＡＳ／ＭＢＳ／ＥＶＡ三元共混体系力学性能及微观形态／冯汇（中山大学高分子研究所）／现代塑料加工应用。1999，11（1）：6～ 8。研究了ＡＳ／ＭＢＳ／ＥＶＡ三元共混体系的力学性质和微观形态。采用ＥＶＡ为相容剂改善核壳型粒子ＭＢＳ在ＡＳ基体中的分散，达到良好效果，在保持良好弯曲性能的同时，提高了基体的缺口冲击强度。ＡＳ／ＭＢＳ／ＳＢＲ的力学性能及其微观形态／冯汇（中山大学高分子研究所）／塑料工业。1999，2 7（1…     

AMS改性粉状PVC—经纱管材料的研究与探讨

本文介绍了ＡＭＳ改性粉状ＰＶＣ经纱管材料的配方和共混改性，以及成型工艺，材料改性后，大大改善了加工性能，其经管具有强度高，韧性大，刚性好，外表光滑易着色等优点，为ＡＢＳ向ＰＶＣ过渡提供了经验。     

高聚合度聚氯乙烯材料的加工改性研究

研制了ＤＯＰ,ＭＢＳ,ＡＣＲ改性剂对合度聚氯乙烯加工性能和改性体系力学性能的影响,结果表明：ＤＯＰ对高聚合度聚氯乙烯材料的加工性有明显的改善,能满足挤出、注射成型的工艺要求,但随着ＤＯＰ的含量增加材料的力学性能下降很大;ＭＢＳ,ＡＣＲ改性高聚合度聚氯乙烯,不但使改性体系塑化为改善,冲击强度有明显提高,而且共混材料的拉伸强度下降不大。     

阻燃丙烯腈—丁二烯—苯乙烯共聚物（ABS）

本文系统地论述了ＡＢＳ常用的各类阻燃剂的性能及其优缺点，汇集了十多种阻燃ＡＢＳ的配方和全面性能数据，讨论了用于阻燃ＡＢＳ的冲击强度改性剂和它们的效能．最后，本文还介绍了阻燃聚碳酸酯（ＰＣ）／ＡＢＳ共混体．     

弹性体改性HIPS在电视机前壳上的应用

以弹性体ＳＢＳ为主对ＨＩＰＳ进行改性，实验结果表明：共混体系中一定含量的ＳＢＳ可提高ＨＩＰＳ的缺口冲击强度，使其接近ＡＢＳ水平。而对ＨＩＰＳ的其它力学性能、流动性能，热性能影响不大，可替代ＡＢＳ应用于ＴＶ前壳的注塑成型。     

ABS／SBS接枝改性研究

报道了ＡＢＳ 与ＳＢＳ热塑性弹性体共混料的性能研究，结果表明：未接枝的ＳＢＳ和ＡＢＳ相容性差，共混体系材质很脆，没有工业应用价值，接枝后的ＳＢＳ与ＡＢＳ相容性增加，改善了ＡＢＳ的耐应力开裂性能，ＡＢＳ与接枝ＳＢＳ共混体的性能基本上达到了ＱＢ／Ｔ１２９４－９１标准，有一定的工业应用价值。     

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。