石化工业炼油设备高温防腐耐磨涂料的研制

采用耐磨胶黏涂层制备法,以环氧树脂为成膜物质,以防腐云母氧化铁、磷铁粉、刚玉、纳米二氧化硅等为填料制备耐高温防腐耐磨涂料。同时采用接枝聚合法,利用有机硅树脂和聚氨酯对环氧树脂进行改性,以提高涂料的耐高温和耐腐蚀性能,适应石油化工炼油设备高温重防腐要求。     

高性能水性工业防腐涂料配套体系的研究与应用

以自制高性能水性丙烯酸聚氨酯树脂(PUA)乳液为主要基料,制备了高性能水性防腐面漆,并研究了以水性环氧富锌底漆、水性环氧云铁中间漆为配套的水性工业防腐配套体系,并进行常规性能、耐化学介质、耐盐雾、耐人工老化等性能的检测分析。结果表明,以高性能水性工业防腐配套体系的防腐涂料可替代传统的溶剂型防腐涂料在相关领域的应用。     

集装箱用环氧富锌涂料防腐性能研究

通过对钢制集装箱用环氧富锌防腐涂料的防腐性能进行研究,制备出具有优异防腐功能且具有优异配套性能环氧富锌涂料。研究了涂膜的锌粉含量、当量比和环氧固化剂种类对环氧富锌防腐涂料耐盐雾性能的影响。结果表明当干涂膜中锌粉含量为82%,且当量比为0.8,使用环氧化合物改性聚酰胺固化剂时,环氧富锌防腐涂料的耐盐雾腐蚀可达1 000 h,配套性能通过IICL认证测试并且海边户外长期防腐性能测试达到5 a。     

铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能研究

通过对铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能的研究,制得了具有优异防腐功能的新型环氧富锌涂料。研究了涂膜的PVC、硅烷偶联荆和环氧固化剂对环氧富锌防腐涂料耐盐雾性能的影响。结果表明当涂膜的PVC为42％、干漆膜中锌粉含量为82％,且配方中选用某环氧基硅烷偶联荆和某腰果油改性环氧固化剂时,环氧富锌防腐涂料的耐盐雾腐蚀可达1518h。     

氯醚树脂重防腐涂料的制备和性能研究

分别以氯醚树脂、氯化橡胶/氯化石蜡、丙烯酸树脂为基体树脂制备了重防腐涂料,比较了3种涂料的耐紫外老化性能、耐水性能和耐盐雾性能.结果表明:以氯醚树脂为基体树脂制得的重防腐涂料的耐紫外老化性能、耐水性能、耐盐雾性能均较好,具有良好的应用前景.     

有机-无机复合金属防腐涂料的制备与性能研究

采用水性硅溶胶与硅丙树脂复配制备了水性硅溶胶-硅丙树脂复合金属防腐涂料。以Q235钢板为基材,研究了不同硅溶胶用量下涂层的力学性能、防腐性能及耐久性能,考察了喷砂与打磨两种不同的基材表面处理工艺对防腐涂料性能的影响。试验结果表明:硅溶胶改性后,复合涂层的耐盐雾时间长达3 000 h以上,氙灯照射250 h后,涂层不粉化、不脱落,附着力达0级,耐冲击性为50 cm,综合性能优异。     

环氧-硅溶胶复合金属防腐涂料的制备及表征

将水性硅溶胶引入水性环氧树脂获得一种防腐清漆,再与颜料、助剂等复配制备了环氧-硅溶胶复合水性金属防腐涂料。研究了水性环氧树脂与硅溶胶复合比例与涂层性能的关系,同时考察了8种典型颜料色浆对涂层力学、防腐、耐候等性能的影响。结果表明:当水性环氧和水性硅溶胶的固体分比值为8∶1时,防腐清漆具有较好的综合性能;磷酸盐防腐颜料和铝银浆颜料的加入使涂层的防腐及耐候性能有较大提升,涂层的耐盐雾时间大于3000 h,氙灯照射600 h后,涂层不粉化、不脱落,附着力0级,耐冲击性能优异。     

云母填料对UV固化涂层防腐性能的影响

为研制高性能绿色环保光固化防腐涂料,以云母作为防腐填料,制备了一种光固化云母防腐涂层。通过凝胶含量测试、双键转化率测试、电化学阻抗谱（ EIS）、中性盐雾试验等方法分析云母填料的加入对光固化涂层的固化程度、固化速率以及防腐性能的影响,并探究了润湿分散剂种类对云母分散性的影响。结果表明：云母填料的加入对光固化过程影响很小,但未改性的云母易产生团聚,反而加快腐蚀的发生;润湿分散剂可以有效改善云母在涂层中的分散性,经改性后的云母能显著提高涂层的耐腐蚀性,添加 30%改性云母的光固化涂层具有优异的耐腐蚀性,浸泡在 3. 5% NaCl溶液中 30 d电化学阻抗值保持稳定,耐盐雾超过 1 000 h。     

AZ31镁合金表面防腐胶粘涂层的研制

胶粘涂层法是有效提高镁合金耐腐蚀性能的表面处理技术之一.以E-44环氧树脂、低分子量650#聚酰胺、云母氧化铁等为主要原料,制备了适用于AZ3l镁合金基体的防腐胶粘涂层.研究了填料含量对涂层外观、施工性和耐蚀性能的影响.结果发现,当填料质量分数为60%、涂层厚度为180～220μm时,防腐胶粘涂层具有良好的外观及施工性,附着力为1级,耐盐雾时间168 h.     

钛合金纳米与二氧化钛纳米在环氧涂膜中的耐蚀性对比研究

为了提高对二氧化钛纳米改性环氧防腐涂料的了解,进一步优化二氧化钛纳米聚合物在环氧涂膜中的耐蚀性,通过添加不同量的二氧化钛纳米聚合物和钛合金纳米聚合物分别制备了2种改性环氧防腐涂料,进行常规性能检测、耐盐雾、耐湿热老化、耐海水浸泡、耐化学品等测试,结果表明:二氧化钛纳米与钛合金纳米改性环氧防腐涂料具有相近的防腐性能,耐盐雾测试结果表明该涂料甚至可以改进划痕处钛合金纳米聚合物电极电位高造成大阴极小阳极的腐蚀起泡问题,可以更有效地提高涂膜的耐蚀性。     

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。