HDJ—01中温固化环氧结构胶膜

介绍了一种新型高分子胶粘剂材料－中温固化环氧结构胶膜。该胶膜具有优异的性能，在宇航、航空工业和其它领域中具有广泛应用前景。     

快速固化剂多元胺—硫脲缩合物的制备

根据战备的需要以及生产的要求,我所于1971年4月开始对常温快速固化胶粘剂进行了研究。按照使用要求,该胶粘剂应平时性能稳定易于保存,使用时可常温快速固化,且具有一定的粘合强度同时使用工艺较为简便。为解决这个问题我们认为以环氧树脂为基础的胶粘剂较好。这样就对可常温快速固化环氧树脂的某些快速     

J—151耐高温胶粘剂的研制

西方阐述了一种１５０℃快速固化，耐热３００℃胶粘剂，具有良好的耐热性和优异的综合性能，不仅可用于航空航天领域，还可用于民用耐高温材料的粘接。     

J—634室温快速固化胶粘剂

J—634室温快速固化胶粘剂系非计量混合二液型胶粘剂。由主剂和活化剂两组份组成。其采用了齐聚物及固体促进剂,降低了胶粘剂的毒性和臭味。该胶具有室温快速固化,贮存稳定性极好,填隙能力强等特点,而且性能优于第二代丙烯酸酯,适用于流水作业线上应用。     

单组分常温固化EP胶粘剂的研制

以环氧树脂(EP)为基体树脂、有机硅为偶联剂,成功研制出一种常温固化的建筑用EP/有机硅单组分胶粘剂,并对其力学性能、耐老化性能、耐盐雾性能和耐介质性能等进行了测定。结果表明:该胶粘剂固化前呈黏稠状液体,可常温固化,施工性能较好;其拉伸强度超过15MPa,剪切强度超过10MPa,并具有较好的耐介质性能;该胶粘剂避免了传统EP胶粘剂在施工方面的诸多不足之处,具有良好的应用前景。     

低温固化阻燃环氧胶粘剂的研制

介绍了一种(-3~4)℃/30 h固化、阻燃抑烟性能优异、低毒、具有良好粘接强度和综合性能的环氧树脂胶粘剂。论述了阻燃胶粘剂配方的选择、环氧树脂的低温固化机理和固化性能,讨论了无机复合阻燃抑烟填料对胶粘剂性能的影响。     

XH—33丙烯酸酯结构胶的研究

对双组分丙烯酸酯结构胶粘剂的主体材料、氧化／还原体系、稳定体系进行了研究，制备的丙烯酸酯结构胶具有快速固化、贮存稳定、粘接强度的优异性能。     

基于磁共振与高频超声的颈椎重建胶固性能与应用研究

基于磁共振与高频超声的颈椎重建用胶固化性能和拉剪强度性能要求的需要,以双酚A型环氧树脂和3种常温固化型胺类固化剂为主要原料,制备了3种不同组分的常温固化型胶粘剂,对比分析了胶粘剂的固化性能、室温拉剪强度和断口形貌。结果表明,随着固化温度的升高,3种胶粘剂的固化时间都呈现下降的趋势;在相同固化温度下,3种胶粘剂固化时间从小至大顺序依次为：胶粘剂1号、胶粘剂2号、胶粘剂3号,即胶粘剂1号的固化时间最短。随着固化温度升高,3种胶粘剂试样的拉剪强度平均值都呈逐渐上升的趋势;在相同固化温度下,3种胶粘剂试样的拉剪强度从大至小的顺序依次为：胶粘剂1号、胶粘剂2号、胶粘剂3号;弹性模量从大至小顺序依次为：胶粘剂1号、胶粘剂2号、胶粘剂3号;断后伸长率从小至大的顺序依次为：胶粘剂1号、胶粘剂2号、胶粘剂3号。虽然胶粘剂1号的固化时间最短,但其拉剪强度平均值最低,推荐重建用常温固化型胶粘剂使用胶粘剂3号。     

胶粘剂固化行为对性能的影响

研究了一种中温固化耐高温胶粘剂固化行为对胶粘剂力学性能和耐久性能的影响,表明胶粘剂只有达到一定的固化程度,才能获得一定的交联密度,耐热性能、粘接强度和耐久性能。同时胶粘剂的固化时间和温度存在等效性关系。     

国内消息

聚氨酯胶粘刘化工部黎明化工研究院研制出一种新型J－1008聚氨酯胶粘剂。它是一种溶剂性双组份胶粘剂。主要用于制鞋生产中粘接聚氨酯合成革，聚氯乙烯人造革以及各种天然皮革、橡胶、泡沫塑料等鞋用材料。具有良好的粘接性能和耐水性。此外还可粘接汽车门封条、聚氯乙烯塑料板、聚酯薄膜、有机玻璃等。J－2004胶粘剂J－2004胶粘剂是黎明化工院研制成功的一种新产品。它是一种无溶剂、双组份环氧型胶粘剂。在室温或稍高温度下，无需加压很易固化。具有良好的粘接性能，其固化产物具有良好的电性能，机械性能及耐候、耐药品性能。该胶粘剂…     

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。