国内外汽车玻璃钢市场的现状与展望

国内外汽车玻璃钢市场的现状与展望李湘洲（长春建筑材料工业学校１３００２２）ＣＵＲＲＥＮＴＳＩＴＵＡＴＩＯＮＡＮＤＰＲＯＳＰＥＣＴＯＦＭＡＲＫＥＴＦＯＲＡＵＴＯＭＯＢＩＬＥＦＲＰＡＴＨＯＭＥＡＮＤＡＢＲＯＡＤ￥ＬｉＸｉｓｌｉｇｚｈｏｕ（Ｃｈａｎｇｃｈｕ...     

星形丁苯热塑性弹性体的合成

以正丁基锂为引发剂、环忆烷为溶剂、四氢呋喃为活性添加剂和结构调节剂,研究了分别以本二甲酸二甲酯（ＤＭＰ）和邻苯二甲酸二七酯（ＤＰＰ）为偶联剂合成（ＳＢ）。Ｒ的工结果表明,用ＤＰＰ作偶联剂,礤偶联效率（ＣＥ）可达９３％以上,偶联反应在４５内完成;偶联反应温度对偶联反应无明显影响;当四氢呋喃／正丁基锂（ＴＨＦ／Ｌｉ,摩尔比）为０时,ＣＥ与偶联剂／正丁基锂无关;当ＴＨＦ／Ｌｉ大于０,ＤＰＰ／Ｌｉ大于０．     

THE PREPARATION OF HIGH－PURITY，ULTRAFINE AND MONODISPERSED TITANIUM DIOXIDE POWDER FROM TITANIUM TETRACHLORIDE BY HYDROLYSIS OF TITANIUM ALKOXIDES

ＴＨＥＰＲＥＰＡＲＡＴＩＯＮＯＦＨＩＧＨ－ＰＵＲＩＴＹ，ＵＬＴＲＡＦＩＮＥＡＮＤＭＯＮＯＤＩＳＰＥＲＳＥＤＴＩＴＡＮＩＵＭＤＩＯＸＩＤＥＰＯＷＤＥＲＦＲＯＭＴＩＴＡＮＩＵＭＴＥＴＲＡＣＨＬＯＲＩＤＥＢＹＨＹＤＲＯＬＹＳＩＳＯＦＴＩＴＡＮＩＵＭＡＬＫＯ...     

化学共沉淀法合成Pr,Nd-ZrSiO_4色料中矿化剂的研究

采用ＸＲＤ和可见分光光度法,研究了化学共沉淀法合成锆基稀土色料过程中,三种不同矿化剂（ＬｉＦ、ＮａＦ、Ｎａ２Ｂ４Ｏ７·１０Ｈ２Ｏ）对合成反应的色料呈色的影响。     

双—p—N,N—二甲氨基苄叉）酮／二苯基碘Wong盐复合体系的电子…

不同的双－（ｐ－ｎ，ｎ－二甲氨基苄叉）酮ＤＭＢＫ和二苯基碘Ｗｏｎｇ盐（ＩＰＩＯＦ）复合，组成一新新型的电子转移光显色体系。ＤＭＢＫ／ＤＰＩＯＦ复合体系在暗处有良好的热稳定性。在光作用下很快发生从激发态ＤＭＢＫ至ＤＰＩＯＦ的电子转移，并伴随ＤＭＢＫ染料的褪色，测得ＤＭＢＫ光褪色速度的次序为：ＤＭＢＡ＞ＤＭＢＰ＞ＤＭＢＨ。与此同时，电子转移又引起新的光显色反应，对ＤＭＢＡ化合物，在７００ｎｍ处出现新吸     

换热器最大管程传热特性比的稳健性选型方法

换热器最大管程传热特性比的稳健性选型方法ＴＨＥＲＯＢＵＳＴＤＥＳＩＧＮＭＥＴＨＯＤＳＦＯＲＳＥＬＥＣＴＩＮＧＡＨＥＡＴＥＸＣＨＡＮＧＥＲＡＴＭＡＸＩＭＵＭＫ／ＰＩＲＡＴＩＯＩＮＳＩＤＥＰＩＰＥＳ范明舫，谭良１引言在评价换热器的综合性能的指标中，Ｓｍｙ...     

对苯二甲酸双羟丁酯合成过程中副产物四氢呋喃生成动力学的研究

对在工业生产条件下，以０．０５％（质量比）Ｔｉ（Ｏ－ｎ－Ｃ＿４Ｈ＿９Ｏ）＿４为催化剂，将对来二甲酸与１，４－丁二醇直接酯化，ＢＤ／ＴＰＡ＝１．７０（ｍｏｌ比），生成四氢呋喃（ＴＨＦ）的副反应动力学进行了研究，得出了ＴＨＦ生成的动力学方程ｄＦ／ｄｔ＝Ｋ（Ｍ＿Ｒ－Ｘ－Ｆ），反应速率常数ｋ＝１．７８×１０￣（１２）ｅｘｐ（－３２９００／ＲＴ）和ＴＨＦ生成的活化能Ｅ．＝１３７．５ｋＪ／ｍｏｌ，略高于酯化反应的活化能，表明以控制反应温度的方法抑制ＴＨＦ的生成是困难的。     

成膜助剂在水性乳胶涂料中的作用及其选择方法

成膜助剂在水性乳胶涂料中的作用及其选择方法ＴａｎＭｅｎｇＫｗａｎｇ（新加坡ＥｓａｔｍａｎＣｈｅｍｉｃａｌ亚太技术中心）ＴＨＥＲＯＬＥＡＮＤＳＥＬＥＣＴＩＯＮＯＦＣＯＡＬＥＳＣＩＮＧＡＩＤＳＩＮＡＱＵＥＯＵＳＬＡＴＥＸＰＡＩＮＴ￥ＴａｎＭｅｎｇｋｗａｎ...     

THE OPPORTUNITIES AND CHALLENGE FOR EXISTING AND NEW CATALYTIC TECHNOLOGIES

ＴＨＥＯＰＰＯＲＴＵＮＩＴＩＥＳＡＮＤＣＨＡＬＬＥＮＧＥＦＯＲＥＸＩＳＴＩＮＧＡＮＤＮＥＷＣＡＴＡＬＹＴＩＣＴＥＣＨＮＯＬＯＧＩＥＳＸ．Ｄ．Ｈｕ（ＵｎｉｔｅｄＣａｔａｌｙｓｔｓ，ＩｎｃＬｏｕｉｓｖｉｌｌｅ，Ｋｅｎｔｕｃｋｙ，ＵＳＡ）Ａｂｓｔｒａｃｔ：...     

改性泥炭腐植酸净化剂对锌,镍,镉等重金属离子吸附效果的研究

改性泥炭腐植酸净化剂对锌、镍、镉等重金属离子吸附效果的研究周群ＡＢＳＯＲＰＴＩＯＮＥＦＦＥＣＴＯＦＭＯＤＩＦＩＥＤＰＥＡＴＨＵＭＩＣＡＣＩＤＰＵＲＩＴＹＩＮＧＡＧＥＮＴＯＮＺＮ￣２＋、Ｎｉ￣２＋、Ｃｄ￣２＋ＡＮＤＯＴＨＥＲＨＥＡＲＹＭＥＴＡＬＩＯＮＳ...     

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。