改性聚四氟乙烯不粘涂料的研制

采用一种特殊的改性树脂对聚四氟乙烯树脂进行改性 ,配制成一种单组分溶剂型不粘涂料。该涂料具有聚四氟乙烯的所有特性 ,施工方便 ,无需底漆 ,一次烧结成型 ,节省能源。涂层硬度高 ,附着力强 ,耐磨性好。当m(聚四氟乙烯 )∶m(改性树脂 ) =6 0∶40时 ,涂层硬度为 4H ,附着力为 1级 ,抗粘性 0级     

拉链头用水性氨基烤漆的制备及性能

根据拉链头应用环境及拉链漆所需性能,选用聚酯树脂和丙烯酸树脂复配作为成膜树脂,氨基树脂为固化剂,研制了一款高性能水性拉链漆。实验结果表明：聚酯树脂和丙烯酸树脂质量比为3∶1,加入聚酯类附着力促进剂,在160℃下烘烤后得到的漆膜附着力0级,耐冲击性(1 kg)100 cm,铅笔硬度H,耐水洗性能优异。     

摩托车油箱涂装配套体系设计

着重讨论了羟基丙烯酸树脂、醛酮树脂、固化剂、流平剂、烘烤条件等因素对摩托车油箱涂装配套体系中层间附着力的影响.试验发现,当羟基丙烯酸树脂与醛酮树脂搭配使用,选择HDI三聚体类固化剂和聚丙烯酸酯溶液类流平荆,涂料施工烘烤条件为90℃/30 min或120 ℃/20 min时,摩托车油箱涂装配套体系中层间附着力0级,柔韧性1 mm,冲击强度50 kg·cm,铅笔硬度2H.     

一种透明耐低温耐候涂料的制备及其防腐性能研究

以氟碳树脂为主要成膜物制备了一种无色透明耐低温耐候防腐涂料,用于304不锈钢及焊缝处的腐蚀防护。考察了树脂型号、主剂与固化剂的质量比和紫外光吸收剂含量对涂层性能的影响。通过电化学测试技术、中性盐雾试验、人工耐老化试验和不锈钢低温管道现场涂覆试验探究了所制涂层的防护效果。结果表明,所制涂层的附着力为0级,耐冲击性(1 kg)50 cm,柔韧性2 mm,经过1 200 h老化试验无明显变化,中性盐雾试验1 500 h后表面保持完整且湿附着力为3.52 MPa。     

PE、PP薄膜油墨用室温自交联水性丙烯酸酯树脂的制备

以丙烯酸(AA)及丙烯酸酯类物质为单体,双丙酮丙烯酰胺(DAAM)和己二酸二酰肼(ADH)为交联体系,丙二醇甲醚醋酸酯(PGMEA)为溶剂,通过自由基溶液聚合制得一种室温自交联丙烯酸酯树脂。研究了亲水性单体AA、丙烯酸羟丙酯(HPA)用量和DAAM用量对丙烯酸酯树脂水溶稳定性以及涂膜耐水性、交联度和在聚乙烯(PE)、聚丙烯(PP)表面附着力的影响,表征了树脂的分子量和交联结构。结果表明,树脂在室温下发生酮肼交联固化反应,其数均分子量大于35 000。当AA、HPA、DAAM分别为单体总质量的9.2%、5.8%和2%时,树脂能完全水溶,涂膜吸水率低于15%、交联度达85.5%。将该树脂用作连接料制得的油墨涂膜耐折性和耐干摩擦性合格,着色率高,耐水性好,在PE、PP膜上的附着力分别为1级和0级,综合性能优良。     

一种金属粉防锈漆

公开号　ＣＮ 1 2 2 32 83Ａ　　申请人　田乃信　　地址　 2 50 0 0 2山东省济南市郎茂山小区三区 1 0号楼2单元 30 2室　　一种金属粉防锈漆是以环氧改性的聚苯乙烯树脂为成膜基料配制银色或金色粉浆漆。本发明提供了以二甲苯、汽油及煤油为溶剂 ,用环氧树脂改性生产成膜基料和生产金属粉漆工艺。聚苯乙烯树脂经环氧改性后 ,提高了漆料的使用性能 ,其附着力达到了 1级 ,柔韧性达到 1ｍｍ。本发明工艺简单 ,投资省 ,产品成本低廉 ,也是治理白色污染 ,回收利用废塑料的优选途径 ,值得推广使用。一种金属粉防锈漆…     

高附着力丙烯酸树脂的研制

合成出一种聚酯中间体，以此中间体及其他原料制备了高附着力丙烯酸树脂，这种丙烯酸树脂配成的高附着力涂料性能优良，硬度、丰满度、附着力均得到提高?研究了影响中间体、高附着力丙烯酸树脂及其涂料制备的因素。     

聚氨酯丙烯酸酯紫外光固化三聚氰胺板材底漆的研制

合成了一种聚氨酯丙烯酸酯和一种附着力促进剂,通过与其它树脂、单体、引发剂的配合,配制三聚氰胺板材UV固化底漆,测试了涂膜的附着力、耐温性、耐水性,掌握了配方中树脂与单体的最佳比例、底漆的最佳光照时间、附着力促进剂的最佳用量、选出了较好的复配树脂,最终得到了性能优异的三聚氰胺板材底漆配方。     

轨道交通车辆用水性双组分金属漆的研究

为解决轨道交通车辆用水性双组分金属漆施工时出现的银粉排列发花、流挂、适用期短等问题,考察了含羟基树脂和不含羟基树脂比例对金属漆施工性能和外观的影响。结果表明：采用含羟基树脂和不含羟基树脂复配的方式,可有效解决金属漆施工困难的问题,所得涂层附着力、金属排列效果、闪光效果、色彩鲜艳度等都有较大的提升,其中A2470树脂和UA5410树脂复配制得的涂层综合性能最佳,抗流挂性可达150μm,附着力0级,杯突试验5.5 mm,耐丁酮擦拭性较好,可满足车身外观颜色多彩的视觉效果。     

一种高固含光固化玻璃用底面漆的研究

合成了一种特殊单体改性的可光固化的脂肪族聚氨酯,制备了一种高固含玻璃用底漆,一道涂布固化后对玻璃有良好的粘附力;涂布一道复配的面漆后漆膜起始附着力0～1级,耐水测试后附着力为1级,硬度≥1H,耐乙醇擦拭性≥130次.     

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。