橡胶行业节能技术和设备介绍

介绍了橡胶行业中节能工艺和设备的使用情况及与旧工艺设备的对比情况,包括炼胶、成型、挤出、硫化,力车胎设备等。另外还介绍了新型导热油加热技术、驱动系统节能措施等。建议尽快推广和开发节能技术和设备,缩小我国与发达国家之间的差距。     

力车胎内胎胶料的连续加工

力车胎内胎胶料的连续加工目前，力车胎内胎胶料一般都在开炼机上进行塑炼，停放后再混炼，滤胶停放后加硫，加硫停放后再用于挤出、接头、硫化，动力消耗大，投人人力多，生产效率低，同时由于工序多，也易引起杂质增多。江苏飞驰股份有限公司（原盐城市橡胶厂）采用大连...     

力车胎行业生产装备调查报告

文章以调查掌握的情况为基础，从力车胎行业生产装备的数量质量和水平，使用和管理等方面分析了力车胎行业生产装备的现状，介绍了我国力车胎生产装备的生产情况，指出我国力车胎生产装备发展的动态和趋向为：压延设备由三辊向四辊过渡，有条件的已使用自动测厚，成型设备向立式一次成型和单鼓式包贴成型方向发展；硫化设备向优质，高效，节能方向发展，设备使用，控制向自动，集控发展，文章最后还推介了几种先进实用的设备。     

力车胎行业生产装备调查报告

文章以调查掌握的情况为基础，从力车胎行业生产装备的数量质量和水平、使用和管理等方面分析了力车胎行业生产装备的现状；介绍了我国力车胎生产装备的生产情况。指出我国力车胎生产装备发展的动态和趋向为：压延设备由三辊向四辊过渡，有条件的已使用自动测厚；成型设备向立式一次成型和单鼓式包贴成型方向发展；硫化设备向优质、高效、节能方向发展；设备使用、控制向自动、集控发展。文章最后还推介了几种先进实用的设备。     

湛江机械厂消化吸收引进的冷喂料排气挤出机制造技术取得成功

为了提高我国冷喂料挤出机的设计、制造水平,1986年广东湛江机械厂在化工部、广东省和湛江市的支持下,从联邦德国Berstorff公司引进了冷喂料排气挤出机制造技术。这种挤出机用于挤出轮胎内胎、内衬层,各种异型密封胶条、胶管、电缆、力车胎等;该机与常压硫化设备(微波、盐浴、沸腾床、剪切机头和热风硫化设备)相联,可组成连续生产优质致密的异型胶条,多芯电缆和胶管的整套设备。由于该机采用了先进的梅勒弗专利结构的螺杆、双辊强力加料系     

解决力车胎三层胶囊液压硫化病疵的方法

硫化是外胎制造的最后一道工序，也是最重要的关键工序，更是决定成品物理机械性能和使用性能的重要工序。目前使用的力车胎硫化设备均为立式水压硫化机和电动个体硫化机，一般情况下，立式水压硫化机的使用较广泛。     

修胎用气囊(硫化囊)设计制造

一气囊的特性气囊为车胎修理时不可缺少的工具,利用此项工具,硫化修补车胎的洞疤,容易均衡傅热,故质量优越,没有修补之处,不易受重硫化的弊病。较之使用砂囊,内胎,夹板等代替工具,硫化时间最短,因之可加大硫化模使用效能。又因其具有高定伸强力,低伸长率及低变形值,故使用之不致使车胎变形。使用时装拆简便,可以节省工时;被修补车胎胶中所含硫黄不致转移,因此可延长车胎     

挤出半成品温度过高及其解决途径

在橡胶加工过程中，橡胶挤出半成品温度过高是最常见的问题，也是橡胶加工技术最敏感的问题，因为挤出物温度过高可能引起早期硫化和焦烧。本文通过对挤出设备、挤出工艺条件以及混炼胶配方等因素影响挤出半成品温度的分析，提出了解决挤出半成品温度过高的若干途径。     

2000年第二季度国家监督抽查化工产品情况汇总(下)

三、橡胶硫化机橡胶硫化机 (主要包括轮胎定型硫化机、平板硫化机、内胎硫化机、电动式力车胎硫化机、液压式力车胎硫化机、垫带硫化机等 ,以下统称橡胶硫化机 )主要用于橡胶产品加工工艺中的关键工序———硫化工序 ,其制造质量对橡胶制品的质量影响至关重大。随着改革开放国民经济的迅速发展 ,橡胶工业对橡胶机械产品不但在数量品种上 ,更在质量上提出了进一步的要求。用于橡胶硫化的设备有十余种之多 ,使用量大 ,涉及面广。对重要的橡胶制品 ,如轮胎、橡胶密封件等的质量有最重大、最直接影响的硫化设备主要是轮胎定型硫化机 ,平板硫化机…     

《橡胶机械产品选用手册》即将出版

《橡胶机械产品选用手册》将在近期出版。该手册由化工部桂林橡胶工业设计研究院杨顺根、虞心尚、杨惠群承担编辑工作,历时3年之久,为橡胶行业作了一项切实有效的工作。该手册共收集了国内70多家主要橡胶机械制造厂生产的橡胶原材料加工设备、炼胶设备、橡胶螺杆挤出设备、压延、截断、硫化设备以及轮胎、力车轮、摩托车胎、胶管、胶带、胶鞋、模型制品、再生胶和胶粉、轮胎翻修等专用设备和橡胶制品成品测试设备。在收集资料中,除了传统橡机产品外,着重收集了近几年来各单位开发的新型橡胶机械产品,如子午线轮胎生产设备,新型线绳V…     

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。