氯碱行业状况及其发展趋势

我国烧碱供过于求 ,市场低迷 ,行业竞争激烈 ;氯产品深度加工不够 ,产品附加值低 ,需要重点关注和开发。部分PVC生产企业原料路线改变 ,大量进口 VCM、EDC,抑制了烧碱生产 ,缓解了烧碱市场 ,但造成国内液氯、盐酸的供求矛盾激化 ,并给 PVC工业带来风险     

坚持三项调整 促进氯碱平衡

我国氯碱工业面临着不景气局面,主要原因是低水平重复建设和隔膜法增长过快;氯碱企业多、规模小、技术装备落后;有机氯产品规模小、技术与装备落后等,导致了碱氯失衡,烧碱压库而氯气不足。探讨了氯碱与石油化工相结合的模式,提出了产业结构（技术、产品、规模）调整的思路     

化工引进项目概况(续)

化工引进项目概况（续）（七）离子膜法烧碱电解槽引进项目概况离子膜制碱技术是当代最先进的制碱技术，生产装备的技术含量高，与其它烧碱生产技术相比，节能效果显著，生产过程无污染，占地少，投资省。目前国外新建烧碱装置，一般采用离子膜法。我国从８０年代初盐锅峡...     

我国氯碱需求现状和前景预测

考察了我国各种氯产品和烧碱应用领域的现状,对２００５年我国电解氯需求总量、烧碱内需量、副产盐酸量等作了预测。并提出了加大引进ＰＶＣ中间体的力度以维持烧碱市场稳定及保持氯碱生产规模稳定等建议。     

国家发改委设立氯碱行业准入门槛

为保进氯碱行业稳步健康发展，防止低水平重复建设，提高行业综合竞争力。近日，国家发改委发布了〈氯碱（烧碱、聚氯乙烯）行业准入条件》。该准入条件明确提出新建烧碱装置起始规模必须达到30万t／a及以上（老企业搬迁项目除外），新建、改扩建聚氯乙烯装置起始规模必须达到30万t／a及以上；新建、改扩建电石聚氯乙烯项目必须同时配套建设电石渣制水泥等电石渣综合利用装置，其电石渣制水泥装置单套生产规模必须达到2000t／d及以上；现有电石法聚氯乙烯生产装置配套建设的电石渣制水泥生产装置规模必须达到1000t／d及以上。     

IMI湿法磷酸——副产盐酸最佳出路之一

近年来我国氯碱工业发展很快,但是烧碱产量远远满足不了国民经济发展的需要。增产烧碱必然增产氯气,而氯气用途开发速度又赶不上烧碱需求的增长。因此,氯碱工业当务之急是寻求氯气的新出路。氯气产品绝大部分是有机氯产品。有机氯产品的生产工艺往往只能利用原料氯气中50%的氯,剩下的50%变为副产氯化氢;只有氧氯化法能100%利用氯化氢中的氯。副产氯化氢的用途有限,副产盐酸更是供过于求。为副产盐酸找出路是我厂增产烧碱的关键。IMI 湿法磷酸是副产盐酸的最佳出路。     

1996年天津碱厂科技成果简介

１９９６年天津碱厂科技成果简介唐振余张玉贵杜砚荣（天津碱厂生产技术处天津３００４５０）我厂１９９６年生产经营形势严峻，各种减利因素增多，纯碱等产品市场供过于求。为了完成年度利税指标，只有深化企业改革，苦练内功，依靠科技进步节能降耗，扭亏增盈，开发新产...     

关于离子膜法制碱迅猛发展的思考

近年来我国离子膜法制碱发展迅猛,各地争相新建、扩建离子膜生产装置,但是快速发展可能会造成国内烧碱市场供过于求的局面,而且国内大多数离子膜生产厂家也存在着使用超前、研发滞后以及产品消耗水平较高,离子交换膜使用寿命短等诸多问题,因此,文章认为应该根据实际情况适时适度发展离子膜法制碱,同时应花大力气解决离子交换膜制造的国产化问题.     

2009年1月国内烧碱价格稳定

1月国内烧碱市场弱势盘整。由于受液氯、盐酸销售困难影响，企业为寻求碱氯生产平衡，不断降低烧碱装置生产负荷。1月东北地区部分氯碱企业因液氯胀库，迫使烧碱装置负荷下降，总开工率在50％-60％；华北、华东地区也受整体市场经济的影响，相应再次降低了开工负荷，其中，河南、浙江、江西表现最为明显，已有企业关停生产装置，     

烧碱、对二甲苯期货及期权在郑商所正式挂牌交易

<正>2023年9月15日，烧碱、对二甲苯期货及期权在郑州商品交易所（以下简称郑商所）正式挂牌交易。中国证监会、地方政府、行业协会、企业等代表共同参加了上市活动。烧碱、对二甲苯是重要的基础化工原料，涉及国民经济诸多领域。其中，烧碱作为“三酸两碱”之一，是盐化工行业的重要产品，广泛应用于冶金、     

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。