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我国废橡胶综合利用的市场分析和投资建议 总被引:1,自引:0,他引:1
我国天然橡胶产量居世界第五(产量低于泰国、印尼、马来西亚和印度),合成橡胶产量居世界第三(产量低于美国、日本),橡胶资源仅占世界总资源的不到10%,目前,每年橡胶缺口50%以上。2004年我国天然橡胶产量仅60万t、进口120万t,三分之二依赖进口,是世界第一大橡胶进口国。同时我国既是轮胎生产大国,又是轮胎消费大国,2004年我国轮胎总产量约为2亿条,进出口相抵后,国内需求量约1.5亿条,按平均70%用于替换轮胎,当年替换下来的废旧轮胎约为1亿条,我国废旧轮胎的产生量仅次于美国,居世界第二位。基于橡胶资源的缺乏,以及废旧橡胶制品(主要是废旧轮… 相似文献
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一、世界天然橡胶生产和需求情况世界天然橡胶产量和需求及主要生产国的产量见表1~2。二、我国天然橡胶生产、消费和加工业发展概况我国1950年全国仅有橡胶林1.2万亩,年产干胶200吨。经过四十年的艰苦奋斗,到目前已有橡胶林60万公顷,年产天然橡胶27万吨,居世界第五位,占世界总产量的5%。1991年我国橡胶工业总产值达190亿元,占化工产值的25%,占全国总产值的1%,年出口创汇5亿美元。胶鞋、自行车胎、再生胶产量居世界首位,橡胶加工业已跨入世界生产大国的行 相似文献
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MAS煤质炭黑的特点及其生产工艺 总被引:2,自引:0,他引:2
谢建忠 《煤炭加工与综合利用》1999,(2):30-31
随着我国橡胶工业的发展,炭黑作为橡胶工业中的填充剂和补强剂需求量很大。目前全世界炭黑总产量已超过6Mt/a,我国炭黑产量为420kt/a,仅次于美国、俄罗斯、德国和日本,居世界第五位。“九五”期间,我国炭黑需求量要在现有基础上再增加54.3%才能满足... 相似文献
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中国橡胶工业跃居世界先进水平从6月13日在上海召开的中国橡胶工业协会第四次会员代表大会获悉,中国橡胶工业发展水平已跃居世界前列。1995年的数据表明,标志着中国橡胶工业综合生产规模的橡胶消耗量已达130万t,仅次于美国、日本,居世界第3位;主导产品轮... 相似文献
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废旧轮胎生产精细胶粉 总被引:2,自引:1,他引:2
1 资源及利用情况随着世界橡胶加工工业特别是轮胎生产的发展 ,废旧橡胶的利用已成为世界性的环保重大难题。据统计美国每年能产生 2 .5~ 3.0亿个废轮胎 ,日本每年 1亿多个 ,我国目前每年消耗橡胶约 2 10万t,仅次于美、日 ,居世界第三 ,橡胶制品总产量约 4 2 0万t ,轮胎产量居世界第三位。自行车胎、摩托车胎、胶鞋和再生胶的产量均居世界第一位。废橡胶的年产量约 140万t ,其中废轮胎占总量的 70 % ,且轮胎的替换是以 15 %~ 2 0 %的速度增长。每t废轮胎中含 2 2 %~ 2 4 %的尼龙纤维 ,16 %~ 18%的钢丝 ,5 8%~ 6 0 %的胶粉 ,废旧轮… 相似文献
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张日明 《中国轮胎资源综合利用》2011,(12):27-28
从2002年起,我国正式取代美国成为世界橡胶第一消费大国,年消耗橡胶逐年递增,其中进口量超过75%,这充分说明我国天然橡胶资源十分匮乏。因此,我国橡胶工业在大力开发合成橡胶新品种、提高合成橡胶总产量的同时,各地企业不断注重废旧轮胎的回收利用。其中废轮胎生产再生胶,是弥补我国橡胶资源短缺的有效途径之一。目前,我国再生胶产量已近280万吨,居世界第一位。 相似文献
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俄罗斯化学工业近况 总被引:1,自引:0,他引:1
俄罗斯是个永远不会被世人淡忘的国家 ,天然气产量居世界首位 ,褐煤产量居世界第 2位 ,矿石产量居世界第 3位 ,硫酸产量居世界第 4位 ,矿物肥料产量居世界第 5位。俄罗斯石化工业和化学工业产值占工业总产值的 7 4 %,仅次于机械制造和冶金、石油和天然气及金属加工和食品部门 ,居第5位。俄罗斯至今仍是一个重要的原料供应国 ,但相当数量的投资已用于中间体和制成品生产 ,2 0 0 1年 4 6 0亿美元的工业部门投资中 ,有 2 75亿美元用于石化工业和化学工业。俄罗斯的化工生产装置过去一直分散在靠近原料产地的地方 ,上世纪 6 0年代以前 ,化工… 相似文献
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苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况,合成乙苯,苯乙烯所用的催化剂种类,并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。 相似文献
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Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile
Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, 13C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc. 相似文献
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The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu3Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu3Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters. 相似文献
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《国际聚合物材料杂志》2012,61(1-4):113-122
Abstract Kinetics and mechanisms of oxidation of 6 acetals by molecular oxygen and ozone in liquid phase have been studied. Reaction with molecular oxygen (70°C, 15–16 hr) leads to the formation monoethers of the corresponding glycols with 68–90% selectivity. Salts of metals and complexes with crown-ethers have increased the reaction rate significally. Ozone have reacted with acetals with formation similar products. The mechanisms of intermediate stages have been proposed. 相似文献
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G. R. Hamed 《The Journal of Adhesion》1983,16(1):31-39
A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength. 相似文献
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责任是人应主动承担的角色义务和对其因过失所造成后果应承担的责罚.有两层涵义:一是义务;二是后果.责任心是个体自觉做好分内事务和履行道德义务的心理倾向,是个性心理品质成分中自我特征维度上的重要内容.责任心具有两个方面的涵义:一是角色分内职责;二是角色道德义务.责任心是一种通过责任认知、责任个性和责任适应的动态形式表现出来的静态品质,责任心是责任心过程结构与责任心关系结构相互制约、相互影响的统一体. 相似文献
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Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method1 was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity. 相似文献