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废旧橡胶微波再生工艺通过部级鉴定由广东梅州市嘉应橡塑厂承担的部重点科技开发项目──—废旧橡胶微波再生工艺日前通过化工部组织的鉴定。梅州市嘉应橡塑厂从1988年开始进行微波脱硫再生工艺研究,并建成了年产1000t的生产装置。该工艺采用微波间歇辐射、红外... 相似文献
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《中国轮胎资源综合利用》2018,(1)
正根据2015年的统计,目前我国废旧轮胎每年的产生量已超过1200万吨之多,而回收利用量才达到550万吨,废旧轮胎的回收利用率只有约46%,而全国固弃物的平均回收率约53%。废旧橡胶回收目前有:翻新轮胎、再生橡胶、胶粉多用途利用等几大途径,其中,超过80%的废轮胎是以再生橡胶的方式进行循环再利用的。脱硫是再生橡胶生产的关键环节,我国目前的再生橡胶脱硫设备主要有以下几种。一、动态脱硫罐 相似文献
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2月1日,鹤壁市安黎环燕轮胎有限责任公司利用废旧轮胎和废旧橡胶年产2万吨再生橡胶项目在河南省政府投资主管部门备案。
该项目总投资5583万元,其中企业自筹3000万元,国内银行贷款2583万元。项目利用常温粉碎法将废旧轮胎粉碎,进行钢丝、纤维、橡胶分类分离;再采用先进的动态脱硫技术经过脱硫、精炼等程序将胶粉加工为高强度清洁型再生橡胶。 相似文献
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李洪良 《中国轮胎资源综合利用》2014,(7):26-26
近几年来,政府主管部门对我们行业的发展给予了高度关注和大力支持,使我们的工作取得了长足的进步。特别是再生橡胶行业,作为一个生产过程中污染物排放控制难度比较大的一个产业,更是得到了各级政府主管部门的高度关注。2010年12月31日出台的《废旧轮胎综合利用指导意见》中明确提出了要“逐步淘汰能耗高、污染重的‘小再生橡胶’企业和再生橡胶动态脱硫罐化学脱硫生产工艺”。 相似文献
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《中国轮胎资源综合利用》2018,(1)
正一、概论再生橡胶是利用废旧橡胶制品及橡胶生产中产生的边角余料,经过粉碎、化学与物理加工等方法,去掉脱硫胶弹性变成具有可塑性和粘性的橡胶,使其重新获得能够再加工利用的橡胶。再生橡胶行业在改革开放以来发展速度很快,再生胶产量由改革开放前的二十几万吨增加到目前的目前的四百多万吨。再生橡胶的品种也有所增加,如:丁基再生橡胶、乙丙再生橡胶。再生方法中的油法、水油法已被淘汰,变成了以动态脱硫法为主,同时又创新发展出了加压捏练法、 相似文献
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废橡胶的回收利用(续3)中联橡胶总公司范仁德二、胶粉(见上期)三、再生橡胶再生橡胶是指废旧橡胶在机械、热氧、化学药剂的作用下,由弹性状态转变为塑性状态,并具有再硫化性质的一种材料。这个过程一般叫脱硫,但实际上并不是把硫化胶中的结合硫黄分离出去,而是硫... 相似文献
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废橡胶再生技术研究进展 总被引:12,自引:0,他引:12
综述了废橡胶再生利用的技术和方法,介绍了废橡胶的物理再生、化学再生的再行剂和微生物再生方法及进展,并对化学再生助剂、植物再生剂和生物再生助剂的再生效果进行了系统评述。 相似文献
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The latex industry has expanded over the years to meet the world demands for gloves, condoms, latex thread etc. Because of the strict specifications for the products and the unstable nature of the latex, as high as 15% of the final latex products are rejected. Since waste latex rubber (WLR) represents a source of high quality rubber hydrocarbon, it is a potential candidate for generating reclaimed rubber of superior quality. Two types of WLR with different amounts of polysulfidic bridges are used in these experiments, which are reclaimed with variation of the concentration of the reclaiming agents, the reclamation temperature and time. Diphenyldisulfide, 2‐aminophenyldisulfide and 2,2′‐dibenzamidodiphenyldisulfide (DBADPDS) are used as reclaiming agents, and the effect of diphenyldisulfides (DPDS) with different substituents, on the reclamation efficiency of WLR is investigated. A kinetic study of the reclamation reaction with the three reclaiming agents is done. The reaction rates and activation energies are calculated and compared with literature values. The comparative study of the three different reclaiming agents shows that (DBADPDS) is able to break the crosslinks at temperature levels ~ 20°C below the temperature levels normally used with DPDS. Another advantage of this reclaiming agent is the reduced smell during the reclamation process and of the final reclaims, one of the most important shortcomings of other disulfides used for this purpose. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 3562–3580, 2007 相似文献
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橡胶再生剂A及其应用 总被引:4,自引:0,他引:4
橡胶再生剂A可以使硫化胶的交联键断裂。同时限制氧化作用对橡胶高分子主链的侵害。橡胶再生剂A适用于硫黄硫化的NR,SBR,BR,NBR,IIR,EPDM和CR硫化胶的再生。原材料可以是焦烧胶、硫化流失胶边和不合格的硫化制品,复原胶生产工艺简单。在常温下用开炼机或精炼机即可。而且生产过程中无污染。 相似文献
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Konstantin A. Dubkov Sergey V. Semikolenov Dmitriy P. Ivanov Dmitriy E. Babushkin Vasiliy D. Voronchikhin 《Iranian Polymer Journal》2014,23(11):881-890
The development of effective methods for reclaiming scrap tyre rubbers attracts a great deal of attention. Earlier, we have proposed an alternative way for reclaiming waste rubber, which consists in its treatment with nitrous oxide (N2O) at 180–230 °C and pressure of 2–5 MPa. In the present study, the reclaimed products obtained by this method from tyre crumb rubber were characterized for the first time by TGA, FTIR, NMR, and ultimate analysis techniques. The results showed that the sol fraction isolated from the reclaimed rubber consists mainly of diene oligomers with the carbonyl, predominantly ketone, groups. The remaining gel fraction includes some of the rubber polymer components and all the carbon black filler present in the initial vulcanizate. Based on the experimental results, a mechanism of vulcanized rubber interaction with nitrous oxide was suggested. The mechanism involves a selective 1,3-dipolar cycloaddition of N2O molecules to C=C bonds of isoprene and butadiene units in vulcanized elastomers. The main reaction route proceeds without cleavage of initial C=C bonds leading to the formation of ketone groups randomly distributed along the polymer backbone. The cleavage of a certain amount of reacting C=C bonds leads to controllable scission of macromolecular chains and accordingly to depolymerization of the initial vulcanized rubber, thus yielding a plastic reclaim product. The sulfur cross-links do not appear to be broken in the course of waste rubber treatment. 相似文献
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研究以防老剂264作为橡胶再生剂的再生机理及其再生效果。结果表明,再生剂可以有效阻止游离基的再结合,限制氧化作用对橡胶主链的损害,同时可降低胶料粘度,增加流动性,在加入少量再生剂后即可获得较满意的物理性能。 相似文献