一种芳香族聚酰胺纤维橡胶预混母料

<正>授权公告号:CN 106751797B授权公告日:2019年4月30日专利权人:中蓝晨光化工有限公司发明人:李兰英、王凤德、何鑫业等本发明提供一种芳香族聚酰胺纤维橡胶预混母料的制备方法。预混母料原料组分与质量分数为:液体橡胶0. 2～0. 8,芳香族聚酰胺纤维与适量分散溶剂0. 2～0. 8。分散溶剂质量为液体橡胶和芳香族聚酰胺纤维总质量的1～2倍。芳香族聚酰胺纤维包括芳香族聚酰胺浆粕和芳香族聚酰胺短切纤维。芳香族聚酰胺纤维橡胶预混母料     

特殊功能纤维的由来和发展

3、芳香族聚酰胺纤维 芳香族聚酰胺纤维是以芳香族取代了脂肪基、其分子量且高分子链间的结构比较紧密。因此,一     

间位芳香族聚酰胺有色纤维研究进展

分析了间位芳香族聚酰胺的结构及其染色性能,探讨了间位芳香族聚酰胺有色纤维的制备工艺。并从改变分子结构、对纤维表面改性和改变染色工艺3个方面,介绍了国内外在间位芳香族聚酰胺纤维染色方面的研究进展,其中表面改性法主要有：紫外线辐射预处理法、液氨预处理法、等离子体预处理法和PE045-MeDMA预处理法;改善染色工艺的主要方法有：真空减压染色法、平幅连续快速染色法、载体染色法等。同时介绍了原液着色方法制备间位芳香族聚酰胺有色纤维的工艺与条件。     

芳香族聚酰胺纤维在摩擦材料、密封材料和包装材料方面的世界市场

整个市场和各区的市场结构 本市场研究是就有关芳香族聚酰胺纤维最终用途的重要性来说。十年后密封材料和摩擦材料可能达到的目标是整个芳香族聚酰胺纤维总用量的四分之一是有重要意义的。 93年芳香族聚酰胺纤维的市场暴跌,其重要原因是汽车工业所需要的芳香族聚酰胺纤维没有完全地进入市场。     

国内外芳香族聚酰胺纤维拉仲测试标准的差异

通过对国内外芳香族聚酰胺纤维测试标准的研究对比,分析了测试方法和技术条件的差异,并对我国芳香族聚酰胺纤维标准体系发展给出建议,为提高我国高性能纤维标准化发展水平,促进标准化技术创新的发展提供了参考。     

高强度耐辐射聚酰胺纤维增强树脂

据“1996,42(11):67”报道,日本原子能研究所的高崎研究所开发成功一种新型的芳香族聚酰胺纤维增强树脂,这种树脂是在三井建设公司开发的编织带用芳香族聚酰胺纤维增强环氧树脂的基础上进行了改性,使其产品的耐辐射性大大提高。与原来使用的防辐射用品比较,该产品的耐辐射性提高了30～50倍,达100MGy。该树脂强度     

信息资讯

四川辉腾科技开发成功杂环芳香族共聚酰胺纤维从20世纪80年代开始,我国就进行了新型杂环芳香族共聚酰胺纤维的研究,但仅限于小试和中试阶段,未能实现规模化生产,产业化进程较为缓慢。目前,该项研究在国内已取得突破性进展。四川辉腾科技有限公司以自主合成的芳香族二胺、杂     

芳香族聚酰胺纤维增强丁腈橡胶垫片材料

研究了纤维含量、粘合处理方法、混炼胶薄通知出片因素对芳香族聚酰胺短纤维增强ＮＢＲ性能的影响。结果表明，芳香族聚酰胺短纤维的加入明显的ＮＢＲ的拉伸强度、撕裂强度和溶胀性能。密封性能测试结果表明，该材料可以代替石棉增强ＮＢＲ制作垫片，产品性能符合ＧＢ５３９－８３指标。     

国际市场

杜邦公司最近宣布,对公司旗下Kevlar品牌的高性能对位芳香族聚酰胺纤维实施扩产计划。杜邦的此次扩产意味着到2010年项目杜邦计划扩产高性能对位芳香族聚酰胺纤维     

芳香族聚酰胺纤维

芳香族聚酰胺纤维是一种高性能高分子材料，重点介绍了ＰＰＴＡ、ＰＢＡ、Ｔｅｃｈｎｏｌａｒ、Ｘ—５００和Ｘ—７０２等芳香族聚酰胺的合成，以及这些高聚物的液晶纺丝方法与各向同性溶液纺丝方法．     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009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、环氧树脂、不饱和聚酯树脂)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。     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

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.