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研究了两种纳米材料14131和14132改性80目胶粉对NR/SBR胶料硫化特性和硫化胶物理性能的影响。试验结果表明,在NR/SBR并用胶中加入15份胎面再生胶和80目改性胶粉,胶料的硫化特性有微小差异;用内米材料14131和14132改性80目胶粉的NR/SBR硫化胶的邵尔A型硬度和300%定伸应力稍有提高,扯断伸长率下降,耐磨性能提高。 相似文献
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BIIR气密层胶料较BIIR/NR和CIIR/NR并用气密层胶料的物理性能和工艺性能好。其配方为:BIIR2222100;硫黄0.45;促进剂DM1.2;促进剂TMTD0.2;氧化锌3.0;氧化镁0.2;均匀剂40MS3.0;炭黑N66060;高芳烃油8;其它1,合计177.05。其大配合混炼工艺为:一段排胶(125—143℃)──精炼──终炼或─段排胶(14℃)──终炼。 相似文献
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2.7 氯化丁基橡胶(CIIR)橡胶通过氯化可与各种橡胶进行并用。表26为CIIR/SBR(丁苯橡胶)并用的无硫硫化体系。图3为表26中含不同硫化体系并用胶的物理性能,图中①~⑦编号与表26的配方编号相对应。表26 CIIR/SBR并用与硫化体系配 方 编 号①②③④⑤⑥⑦CIIR/SBR100/075/2525/7575/2550/5050/5025/75硫化体系 氧化锌5555555 促进剂TMTD111.50.150.150.150.15 促进剂DM2111.51.51.51.5 促进剂T… 相似文献
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研究了硫化剂DL-268对NR/SBR胶料各项性能的影响,试验结果表明,在NR/SBR胶料中加入2份硫化剂DL-268,可改进抗硫化返原性,提高硫化胶在热氧老化或过硫化状态下的物理性能及胶-帘线之间的粘合力,降低硫化胶的疲劳温升。所得结果与所选择的试验配方构成有关。 相似文献
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TCY/硫黄对ACM/NBR并用胶的交联作用 总被引:3,自引:4,他引:3
从混炼胶的硫化特性和硫化胶物理性能等方面考察了三聚硫氰酸(TCY)、硫黄和TCY/硫黄对丙烯酸酯橡胶(ACM)、丁腈橡胶(NBR)及其并用胶的交联作用。结果表明,TCY/硫黄硫化体系适用于ACM/NBR并用胶、并用胶的物理性能达到甚至超过了两种胶料的物理性能的加和水平;ACM/NBR共混并用,加工性能得到明显改善 相似文献
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NR—BR/EPDM并用胶硫化的研究 总被引:1,自引:0,他引:1
研究了天然橡胶(NR)、顺丁橡胶(BR)与三元乙丙橡胶(EPDM)并用胶的硫化条件和经活性剂DS处理的EPDM用量对并用胶性能的影响。试验结果表明,采用NR-BR/EPDM(70/30,质量比)并用胶100份,碳黑60份、氧化锌4份、活性剂DS2.5份、促进剂2.5份、硫化剂2.5份、其他助剂10份的加工配方,可以制得综合性能好的单用胶,它具有强度高、弹性高、拉伸疲劳性及粘接性好、耐老化和耐臭氧性 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献
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In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997 相似文献
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徐善明 《现代塑料加工应用》2008,20(5)
应用管理学和市场营销学的基本原理和方法,深入分析我国聚丙烯工业的内部和外部环境、市场状况以及加入WTO后所面临的机遇与挑战.在此基础上,应用SWTO(态势分析法),确认出主要的优势和劣势、机会和威胁,对我国聚丙烯工业的国际竞争力进行结构化的综合分析. 相似文献
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