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介绍了交联聚乙烯的用途以及发展前景,概述了交联聚乙烯的生产技术,包括辐射交联、过氧化物交联、硅烷交联、紫外光交联、盐交联等交联方法,提出了发展我国交联聚乙烯生产的一些建议。 相似文献
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介绍了交联聚乙烯的性能、用途以及发展前景,概述了交联聚乙烯的几种生产技术,包括辐射交联、过氧化物交联、硅烷交联、紫外光交联、盐交联等交联方法,提出了发展我国交联聚乙烯生产的一些建议。 相似文献
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交联聚乙烯开发应用与发展建议 总被引:7,自引:0,他引:7
李静辉 《现代塑料加工应用》2004,16(2):61-64
综述了各种交联聚乙烯的生产技术,包括辐射交联、过氧化物交联、硅烷交联、紫外光交联、盐交联等交联方法。同时对交联聚乙烯在电线电缆、管材等领域的应用提出了我国发展交联聚乙烯的建议。 相似文献
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邬继荣 《精细与专用化学品》2009,17(12):20-22
聚乙烯(PE)是五大通用塑料之一,其产量和消费量居各种合成树脂之首。但是聚乙烯耐高温性能很差.力学性能及耐化学性能也不能满足使用要求.因此对PE改性一直是其产品开发应用的关键.而交联则是PE改性的一项重要技术。目前,用于PE交联的方法主要有:辐射交联、紫外光交联、过氧化物交联和硅烷交联等。硅烷法交联聚乙烯技术自20世纪60年代末问世以来.得到了长足的发展.获得了广泛的应用。 相似文献
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论述了交联聚乙烯是以电缆专用的低密度聚乙烯为基础树脂,加入过氧化物体系,抗氧化物体系等,经特殊的工艺制成的电缆绝缘料。通过它与聚乙烯、聚氯乙烯物理性能比较,可以看出交联聚乙烯的电性能、机械性能优良。它的生产工艺分五种:过氧化物交联法、辐照交联法、硅烷交联法、紫外光交联法、盐交联法。目前,我国大多数电线电缆绝缘料的生产企业采用辐照交联法和硅烷交联法。在环保方面,随着人们对环保电线电缆的要求越来越迫切,交联聚乙烯绝缘料在电线电缆行业中更是具有不可取代的地位。 相似文献
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硅烷交联聚乙烯/尼龙6阻隔材料的研究 总被引:1,自引:1,他引:0
通过硅烷交联聚乙烯与尼龙6共混制备阻隔材料,研究了硅烷交联聚乙烯的交联时间及尼龙6含量对复合材料阻隔性能、力学性能及热性能的影响。结果表明:随着交联时间的增长,材料的阻隔性能有所提高,当交联时间为6h时,表现出良好的阻隔性能;尼龙6含量对材料的阻隔性能和力学性能具有双重影响,当尼龙6含量为16%时,阻隔材料综合性能较好。 相似文献
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Beta-cyclodextrin(β-CD) was successfully loaded on the surface of glass beads without spacer group or cross-linking agent. The directly loaded β-CD was stable in toluene and methanol flows but critically hurt in more polar solvent such as water and dimethylformamide. Cross-linking
could stabilize the directly bonded β-CD glass beads. Pore openings of cyclodextrin can be narrowed or blocked by end-capping agent, spacer groups, and cross-linking
agents. The β-CD directly bonded glass beads have a capability to form inclusion complexes with larger host molecules because
this method can avoid pore narrowing and blocking problems. 相似文献
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叔丁基酚醛树脂在PP/EPDM合金中的作用研究 总被引:5,自引:0,他引:5
采用熔融分段共混法制备含有叔丁基酚醛树脂的PP/EPDM合金,通过SEM、DMA、拉伸和结晶速度试验,研究了PP合金的结构形态、相分离、结构行为和力学性能。结果表明过氧化物能改进PP/EPDM/PE合金的动态交联密度。PP/EPDM/PF/过氧化物合金的力学性能和结晶速度优于PP/EPDM和PP/EPDM/PF系统。 相似文献
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Photocatalytic degradation of polyvinylpyrrolidone (PVP) by titanium dioxide and ozone in an annular reactor was investigated using a 125-W mercury vapor lamp as the light source. It was observed that the TiO2/O3/UV process presented a greater efficiency than the TiO2/UV process. In fact, around 90% of the mineralization was obtained in 1 h of reaction, reflecting the synergistic effect of the combination of O3 and TiO2 under UV light, because the sum of the rate constants of the individual processes is less than the rate constant of the combined process. The effects of the initial PVP concentration, photocatalyst dosage, ozone input flow rate and pH on the PVP degradation rate were studied. In general, the results suggest that PVP can undergo a cross-linking process when the TiO2/O3/UV treatment is applied. The reaction rate was increased when the photocatalyst dosage was increased up to 2.0 g L?1; however, increasing the initial PVP concentration led to a drop in the reaction rate. The efficiency also decreased at basic pH, because ozone is decomposed under alkaline conditions. In addition, it was noted that most of the nitrogen atoms of the macromolecules of PVP can be transformed into nitrate and ammonia during photocatalytic ozonation. 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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