POE／PE反应挤出接枝马来酸酐

研究了辛烯-乙烯共聚物，聚乙烯（POE／PE）的掺混比例、马来酸酐（MAH）单体和过氧化二异丙苯（DCP）用量、第二单体的种类、反应温度、螺杆转速、真空度对接枝产品性能的影响情况以及接枝产品与尼龙共混注塑制得的样品的性能，得到了使该种接枝产品使用性能最佳的配方和工艺条件，即POE／PE为75／25；MAR用量1．3％～1．5％（质量分数），DCP用量：0．04％～0．06％（质量分数），第二单体苯乙烯用量为1．2％～1．5％（质量分数），螺杆转速：40-50r／min，真空度0．01MPa，螺筒温度：140～195℃。     

高光泽水性清漆

丙烯酸丁酯、丙烯酸辛酯、丙烯腈等单位经游离基聚合反应，添加阴、阳和非离子型复合表面活性剂及流平剂、增塑剂等制备高光泽水性清漆。清漆固体分45－50％，光泽95％，硬度6H，耐磨性1000转损失0．01g，漆膜耐水，耐汽油，耐化学腐蚀。叙述了制备工艺。讨论了单体配比、表面活性剂类型、引发剂用量和反应温度等因素对漆膜性能的影响。经实验确定，阴离子型、非离子型和阳离子型表面活性剂比例为1：0．2－0．5：0．4－0．8，引发剂用量为单体总量的0．2－0．4％，反应温度70－75℃。列出了清漆主要技术指标。     

POE/PE反应挤出接枝马来酸酐

研究了辛烯-乙烯共聚物，聚乙烯（POE／PE）的掺混比例、马来酸酐（MAH）单体和过氧化二异丙苯（DCP）用量、第二单体的种类、反应温度、螺杆转速、真空度对接枝产品性能的影响情况以及接枝产品与尼龙共混注塑制得的样品的性能，得到了使该种接枝产品使用性能最佳的配方和工艺条件，即POE／PE为75／25；MAH用量1．3％～1．5％（质量分数），DCP用量：0．04％-0．06％（质量分数），第二单体苯乙烯用量为1．2％-1．5％（质量分数），螺杆转速：40-50r／min，真空度0．01MPa,螺筒温度：140～195℃。     

合成高分子聚丙烯酰胺参数的确定

通过分析合成高分子聚丙烯酰胺（PAM）的影响因素，确定了最佳工艺条件：引发剂过硫酸铵加入量为AM的0.1%-1%,AM单体浓度为10％－12％，EDTA加入量为AM的0．1％作为络合剂，用氮气控制聚合环境，聚合温度在40－70℃，反应时间2－4h，可得到分子量超过10^7、水解度在20％－30％可调的速溶高分子量PAM。     

鞋材用聚丙烯酸酯乳液及其醇溶性港宝的研制

为了适应环保和市场的要求，筛选出聚合物性能优良的醇溶性单体，采用预乳化乳液聚合法合成了鞋材用聚丙烯酸酯乳液，研制开发了新型鞋材醇溶性港宝胶片。讨论了醇溶性单体用量、引发剂加入工艺对乳液聚合物性能的影响，分析了填料种类对胶片性能的影响。通过DSC、GPC对乳液聚合物进行了表征。结果表明：单体组成质量比为MMA：EA：MAA=45：40：15时，所得乳液聚合物能满足使用性能要求；种子引发剂加入量控制在单体量的0．3％，而总的引发剂用量在0．8％较适宜；以滑石粉作填料，可克服工作液增稠严重的缺陷，工作液的配比按胶乳：滑石粉：水质量比200：80：60能得到理想港宝胶片。     

丙烯腈接枝SIS胶粘剂的研制

以丙烯腈为单体与SIS在混合溶剂中接枝共聚，制成接枝改性的SIS胶粘剂，探讨了聚合工艺条件及配方对胶粘剂性能的影响。合适的工艺条件为：反应温度75-80℃，反应时间3．5-4．0h，引发剂用量为0．8％-1．0％之间，AN用量为SIS的25％。     

情报信息(二)

可热封树脂薄膜或片材标题薄膜或片材，气体阻隔性能优异，用作包装材料，由含30～90％乙烯一烷基丙烯酸酯共聚物或其与聚乙烯和10～70％偏氯乙烯聚合物的混合物模压而成。例如，由20（体积）％（31．1％）的塑化偏氯乙烯一氯乙烯共聚物（Krehalon）和80（体积）％DPDJ6169组成的薄膜，其透氧率为5．7×1011cm3－cm／Cm2-s－cmHg，热封强度和柔韧性能良好。（CA：Vol．11910203h）制备丁二烯—偏氯乙烯—不饱和羧酸共聚物胶乳的简化工艺情报信息在每百份树脂0．2－0．3份HCI或H2SO4存在下，不饱和竣酸为甲基丙烯酸时，聚合各单体，可…     

多功能助剂BPP的合成及应用研究

以2，4－二溴苯酚和POCl3在催化剂存在下合成多功能助剂BPP的方法及其应用，详细地研究了各种工艺参数对合成BPP的影响。结果表明：适宜的反应条件是2，4－二溴苯酚和POCl3的摩尔比为3．0－3．1：1，催化剂A用量为2，4－二溴苯酚重量的1．0％－1．5％，反应温度80－140℃，反应时间6－8h,BPP收率≥80％，应用研究表明：BPP阻燃性能和加工性能好，能改善材料的机械性能，对材料的透光性无影响，而且BPP还兼有避鼠和防霉性能。     

种子乳液聚合法制备聚丙烯酸酯织物涂层剂

以丙烯酸丁酯、丙烯酸乙酯，甲基丙烯酸甲酯，丙烯腈与丙烯酸为单体，N－羟甲基丙烯酰胺为交联剂，采用种子乳液聚合法制备了自交联织物涂层剂，经实验确定最佳反应条件：m(丙烯酸丁酯）：m(丙烯酸乙酯）：m(甲基丙烯酸甲酯）:m（丙烯腈）＝7．0：1．2：0．8，丙烯酸，交联剂，乳化剂和引发剂的用量分别为单体总质量的2．5％，3．5％，4．0％和0．3％，种子和外壳的反应温度分别为80℃和85℃，反应时间为3小时和6小时，应用实验结果表明，聚丙烯酸酯乳液膜拉伸强度可达2．2MPa，涂层织物耐静水压可达5．1KPa。     

聚氯乙烯树脂配方

介绍了一种加工性能有所改进、但透明度却没有降低、未胶凝物大为减少的聚氯乙烯树脂配方,由100份聚氯乙烯树脂和0.1-30份加工助剂组成。其中所用加工助剂聚合物的制备过程为：乳液聚合3－30份单体混合物（A）（由0－50％甲基丙烯酸甲酯、50％－100％丙烯酸烷基酯及0－20％另一种乙烯类可共聚单体组成）,然后聚合40－94份单体混合物（B）（由60％－100％甲基丙烯酸甲酯,0－40％至少选自一种丙烯酸烷基酯或甲基丙烯酸甲酯以外的甲基丙烯酸烷基酯的单体,0－10％另一种乙烯类可共聚单体）,再聚合3－30份单体混合物（C）（由50％－100％甲基丙烯酸甲酯、50％－100％丙烯酸烷基酯、0－20％另一种乙烯类可共聚单体组成）,（A）、（B）、（C）三种单体混合物的总量为100份。     

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。