新型水性丙烯酸聚氨酯涂料的制备

以水性丙烯酸分散体和水性异氰酸酯固化剂为主要成膜物质制备了双组分水性聚氨酯高光耐候面漆,并讨论了不同水性羟基丙烯酸分散体、水性多异氰酸酯的配比及其分散工艺、不同助剂对水性聚氨酯分散体性能的影响。制备了一种具有优异装饰性和保光保色性的双组分水性丙烯酸聚氨酯环境友好型工业涂料。     

高性能水性双组分聚氨酯工业面漆的研制

使用自制的羟基丙烯酸乳液制得了水性双组分聚氨酯工业面漆。重点考察了水性双组分聚氨酯工业面漆研制过程中颜基比及成膜温度对涂膜耐介质性能的影响、催化剂用量和温度对涂料凝胶时间的影响,并对n(—NCO)/n(—OH)和流挂性能进行了探讨,最终得到了各项性能指标均优异的水性双组分聚氨酯工业面漆。     

水性环氧底漆的研制及其在铁路机车车辆上的应用

介绍了一种新型铁路机车车辆用水性环氧底漆的配方组成、产品性能及施工工艺。此水性环氧底漆成膜物由水性环氧树脂与水稀释性多元胺加成物组成,以不含重金属的环保防锈颜料、滑石粉、沉淀硫酸钡等为颜填料,以纳米氧化锌为改性材料,在多种功能助剂及水的配合下精制而成。涂膜具有环保、优异的附着力及耐腐蚀性等特点,且与铁路机车车辆常用的聚酯腻子/改性聚酯腻子、水性丙烯酸聚氨酯中涂漆和水性丙烯酸聚氨酯面漆配套性良好。     

集装箱用水性丙烯酸面漆的研制

研制了一种应用于集装箱的水性丙烯酸面漆。采用不同玻璃化转变温度的丙烯酸乳液作为成膜基料,添加颜填料和合适的水性涂料助剂,制备得到水性丙烯酸面漆。重点考察不同丙烯酸乳液比例、涂料颜基比、快干溶剂用量、增稠剂类型和种类以及消泡剂等对涂料性能的影响。通过正交试验,最终研制出综合性能优异的水性丙烯酸面漆,符合中国集装箱协会(CCIA)组织制定的JH/T E08—2015《集装箱用水性涂料涂膜检验方法和验收标准》。     

水性双组分丙烯酸聚氨酯面漆耐酸碱性能的影响因素探讨

介绍了一款耐酸碱介质性能优异的水性双组分丙烯酸聚氨酯面漆，通过不同羟基丙烯酸成膜物的选择、固化剂的种类、当量比的调整、干燥条件的优化，解决目前广泛存在于水性丙烯酸聚氨酯面漆耐酸碱介质性能差的问题。该产品可广泛应用于轨道交通行业。     

水性带锈防腐涂料的制备及性能分析

制备了一款水性偏二氯乙烯锈转化底漆及水性丙烯酸聚氨酯面漆。对涂层配套性进行了分析,讨论了锈转化剂添加量对偏二氯乙烯底漆锈转化性能的影响,通过正交实验确定了水性丙烯酸聚氨酯面漆配方中防锈颜填料与树脂的配比,分析了不同锈层厚度对水性带锈防腐涂料涂膜性能的影响。     

装配式钢结构水性重防腐涂层的研制

针对我国近海内陆装配式钢结构长效防腐需求,研制了与之配套的水性重防腐涂层。通过调整涂料关键材料的组成及配比,研究了其对水性环氧富锌底漆、水性环氧云铁中间漆以及水性脂肪族丙烯酸聚氨酯面漆关键性能的影响。结果表明：适量的纳米锌粉、云母氧化铁以及离子吸收剂的加入有利于提高底漆的耐腐蚀性和早期耐水性;云母氧化铁与复合磷酸锌颜料合理搭配,有助于提升中间漆的防腐性能;附着力促进剂对水性聚氨酯面漆性能提升显著。所研制的水性环氧富锌底漆、水性环氧云铁中间漆、水性脂肪族丙烯酸聚氨酯面漆及配套涂层的相关性能超过行业标准（HG/T 5176—2017）的性能指标,表明了该涂层体系可以满足 C4环境下的长效防腐要求（ >25 a）,为近海内陆装配式钢结构的表面涂装提供了技术参考。     

我国水性汽车涂料技术获突破

北京钰林化工有限公司经过两年多的艰苦攻关,在水性汽车涂料研发方面取得突破,先后推出了水性双组分丙烯酸聚氨酯防锈底漆、水性双组分丙烯酸聚氨酯中涂漆、水性双组分高光泽丙烯酸聚氨酯面漆。截至记者昨天发稿时,北京公交集团、湖南长沙梅花客车厂等采用钰林水性汽车涂料已喷涂100多辆大客车。     

液压油缸外壁用水性涂料配套体系的研制

研制了液压油缸外壁用水性涂料配套体系,结果表明:通过对比实验,选用国产水性羟基丙烯酸分散体S02制备水性丙烯酸聚氨酯面漆,涂膜综合性能更佳;亲水性多异氰酸酯H01与树脂相容性好、易分散均匀,但耐化学品性能不如低黏度疏水性多异氰酸酯H02,通过将两种水性异氰酸酯固化剂复配使用,研制液压油缸外壁用水性涂料配套体系,各项性能不仅满足HG/T 4761—2014 《水性聚氨酯涂料》标准要求,也能够满足客户使用性能指标要求。     

我国水性汽车涂料技术获突破

<正>北京钰林化工有限公司经过两年多的艰苦攻关,在水性汽车涂料研发方面取得突破,先后推出了水性双组分丙烯酸聚氨酯防锈底漆、水性双组分丙烯酸聚氨酯中涂漆、水性双组分高光泽丙烯酸聚氨酯面漆。截至记者昨天发稿时,北京公交集团、湖南长沙梅花客车厂等采用钰林水性汽车涂料已喷涂100多辆大客车。     

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。