环保PVC电缆料的发展

介绍了电线电缆行业用主要材料的种类,以及用户对PVC电线电缆的环保要求和环保PVC电缆料的发展及配方思路,并对环保电线电缆的要求及对线缆料的选用提出了建议。     

陶氏推广电线电缆行业创新产品及Dow Inside计划

陶氏化学公司（以下简称“陶氏”）下属的陶氏电线电缆业务部在中国国际线缆及线材展览会上,展示了其在电线电缆行业的创新产品、技术开发及解决方案,包括：AC电源线及插头的PVC替代解决方案、PV电线材料、生物基PVC增塑剂、陶氏高压／中压电力电缆解决方案以及旨在提高电缆耐用性的新产品系列。     

电缆急需加快新材料替代步伐

在电线电缆的绝缘和护套材料中,PVC因价格便宜,力学性能优良,加工方便,使得它长久以来成为电线电缆行业用量最多的材料 20世经末以来,PVC材料的环境问题被广泛认识,一些发达国家已提出了限制或全面禁止使用PVC电缆的法今建议 有数据表明,西欧国家线缆领域PVC的用量,1994年为44.1万(?),占线缆所用树脂的58％,而2000     

无铅、无镉纳米PVC复合稳定剂在UL105度电缆料中的应用

概述了PVC电缆料在电线电缆行业的应用，研究了无铅、无镉纳米PVC复合稳定剂热稳定性能及其在105度电缆料的应用，并与铅盐稳定剂及同类型无毒稳定剂进行对比，说明无铅无镉纳米PVC复合稳定剂完全可以替代铅盐稳定剂。     

超细活性碳酸钙在PVC电线电缆料中应用的研究

采用扫描电镜、比表面仪进行了粉体的微观形貌、比表面积分析,用不同品种的超细活性CaCO_3对PVC电线电缆料进行改性,分析了复合材料的力学性能和表面光泽度等物理性能指标。研究结果表明:HX-6000具有较大的比表面积和较高的CaCO_3含量;HX-6000制备的PVC复合材料拉伸性能最佳;随着CaCO_3添加量的增加,材料密度逐渐增大,其中CCR-1制备的PVC电线电缆料密度最小,其次为HX-6000制备的PVC电线电缆料;HX-6000制备的PVC电线电缆料表面光泽度最好。     

塑料改性技术在电线电缆材料中的应用

针对电线电缆行业的发展要求,综述了塑料改性技术在聚氯乙烯(PVC)和聚烯烃低烟无卤电线电缆料上的应用。     

PVC共混阻燃材料的研究概况

介绍PVC与氯化聚乙烯、氯化聚氯乙烯、NBR、乙烯-醋酸乙烯共聚物和热塑性聚氨酯的二元和三元共混阻燃材料的研究概况。与PVC单用阻燃材料相比，PVC共混阻燃材料的物理性能和阻燃性能好，燃烧时放出的有毒烟气量小，其配合技术已在电线电缆和胶带等生产中应用。     

PVC改性技术在电线电缆中的应用现状与发展趋势

对当前PVC电线电缆的强韧性、热稳定性、阻燃性、电绝缘性等材料改性技术及改性原理及对应的国内外的研究状况进行介绍,然后介绍了共混改性及交联改性工艺技术,为研究PVC的改性技术在电缆中的应用提供研究思路。     

四川推出“PVC”低铅复合稳定剂

四川大学开发出国家级“PVC”低铅复合稳定剂。分为四个型号：挤出级，供生产PVC管，板，丝，膜，型材等用；注塑级，供PVC管件及PVC合金注塑件；卫生级，供生产PVC饮用水管用；绝缘级，供生产PVC电线电缆用。     

70℃级PVC电缆料耐热性能模拟寿命试验

前言随着国民经济的发展,电线电缆行业为达到国际先进水平,其电线电缆产品标准正逐渐向国际电工委员会(IEC)标准靠拢。按照IEC标准,电缆料的最低耐热等级为70℃。这就要求目前生产的PVC电缆料的长期使用温度从65℃提高到70℃。此外,为了满足电线电缆行业产品更新换代的需要,     

我国PVC电缆料行业现状及对PVC树脂的需求

介绍了我国PVC电缆料行业的现状及线缆业对PVC电缆料的新需求。提出了PVC电缆料行业对分子质量分布均匀的PVC树脂、PVC消光树脂、本体法PVC树脂及高聚合度PVC树脂的需求。     

我国电缆料行业的发展趋势和市场需求

分析了我国电线电缆行业的发展趋势,介绍了我国电缆料产品的构成,预测了未来几年我国主要电缆料的市场需求,指出了我国电缆料行业的发展方向。     

提高PVC电缆料电绝缘性能的研究

通过研究增塑剂和绝缘改进剂与PVC电缆绝缘料体积电阻率、介电常数和介质损耗角之间的关系 ,建立了增塑剂和绝缘改进剂含量与电性能之间的关系曲线 ,从而确定了可满足程控交换机应用的、具有良好电性能的PVC电缆料配方     

电线电缆阻燃化研究现状

分析了电线电缆火灾的成因和危害;简要介绍了低烟低卤阻燃聚氯乙烯电线电缆料的发展现状和方向;重点介绍了低烟无卤阻燃聚烯烃电线电缆料的阻燃机理和研究现状;提出了阻燃剂的无卤化、抑烟和低毒是当前和今后电线电缆阻燃研究领域的前沿课题,但在阻燃电缆的应用上还需进一步深入研究。     

The Dilemma of flexible PVC from an independent compounder's perspective

Flexible PVC compounds produced by the Plastics Division of Teknor Apex are used in most major end-use markets. Our materials are molded and extruded for applications in wire and cable, automotive, medical, building and construction, appliances, toys, food packaging, housewares, power tools, recreational products, and many other industries. This involvement with diverse markets gives us a wideranging perspective on attitudes towards flexible PVC among people involved in product design, material specification, purchasing, sales and marketing, processing, and other important functions at corporations large and small. “The Dilemma of Flexible PVC” reflects what we see, from our conversations and business dealings with these customers, as a critical crossroads for the material. On the one hand, we see many new opportunities for greater market penetration by flexible PVC because of dynamic new product development in the industry and continuing cost/performance advantages compared to other thermoplastics. On the other hand, we are hearing escalating concerns from the marketplace about the environmental friendliness and safety of flexible PVC that may threaten these opportunities. These negative attitudes toward PVC are certainly not new, but we are hearing them with increasingly greater frequency. They are coming from design engineers and other material specifiers developing new applications, and from people involved in long-standing flexible PVC applications.     

Mass polymerized PVC in wire and cable applications

Mass (bulk) polymerized PVC is used extensively in rigid extrusion applications on a worldwide scale. However, relatively small quantities are used in flexible products such as wire and cable. This is surprising considering the uniformity of the resin, its highly accessible porosity, and its consistency batch-to-batch. There was concern that mass polymerized PVC would not meet existing specifications. A study was undertaken to determine if mass resin could be used in various wire and cable applications. The results show mass resin compounds may have slightly lower electrical properties but still within specification. Selected physical and aging properties are also satisfactory. Independent testing has confirmed our results. Based on this study, major wire and cable producers are now routinely using mass resin with excellent results.     

我国PVC加工行业的发展状态与趋势

回顾了PVC加工业的发展历史，介绍了PVC化学建材、管材、门窗型材、防水材料等制品的发展方向，提出大力抓环保、提高人们的环保意识、以法治污、重视PVC包装材料的回收再生是当前PVC加工业面临的主要问题。同时，讲述了各类PVC制品应积极引导发展的方向，认为“十五”规划给PVC的发展带来了新机遇，加速发展PVC工业适逢其时、势在必行。     

电线电缆用CPE弹性体配方研究

简介氯化聚乙烯(CPE)弹性体的物理与化学性质。通过对CPE配方研究,发现CPE弹性体在以过氧化二异丙苯(DCP)为硫化剂、炭黑为补强剂,并配以适量的软化剂,所得的硫化胶完全能满足橡套电缆IEC245标准的要求,性能优良。     

The effect of accelerated ageing of building wires

The fire performance of two electric cables (building wires) designed for indoor use has been tested, both as new products and after accelerated thermooxidative ageing. The cables were aged for a maximum time of 16.5 weeks at 80°C. The cables are commercially available, and were constructed using a PVC material in one case and a non‐halogenated polyolefin‐based material, called Casico, in the other. The effects of ageing on the fire performance of the cables, and the chemical changes that have caused the observed fire behaviour, have been investigated and are discussed. Special attention is paid to the behaviour of the plasticizers that are used in the PVC cable, and how the fire behaviour is affected by the loss of plasticizers from the cable and by the migration of plasticizers between the parts of the cable (insulation, bedding and sheathing). Copyright © 2007 John Wiley & Sons, Ltd.     

工厂电气工程施工中应注意的几个问题

就工厂电气工程施工中管线预埋 ,电线电缆的连接 ,配电柜安装 ,电气设备的接地安装等几方面问题进行了探讨