炭黑在高分子聚合物中的导电性研究

以EVA为高分子聚合物，采用不同级别的导电炭黑，研究了导电炭黑填充高分子聚合物的导电性，讨论了不同级别和不同用量的导电炭黑在聚合物中的分散性，以及对高分子聚合物导电性的影响。实验结果表明，导电炭黑高分子聚合物的导电性主要取决于不同级别的导电炭黑的表面性和结构等特性、炭黑的不同用量以及导电炭黑的聚集体在高分子聚合物的分散程度。     

炭黑对复合型导电高分子材料电性能影响

阐述了炭黑填充型导电高分子复合材料的导电机理，讨论了炭黑基本物性、填充量以及分散状态对材料导电性的影响，并探讨了影响炭黑分散状态的因素。     

LDPE／炭黑导电复合材料电学及力学性能研究

研究了炭黑种类及用量、极性共聚物（Ｅ－ＡＥ－ＭＡＨ）、润滑剂种类及用量和交联剂（ＤＣＰ）对ＬＤＰＥ／炭黑导电复合材料电学及力学性能的影响。结果表明,ＨＧ－４型炭黑导电性最好,ＡＣＥＴ炭黑导电性较差。极性共聚物能提高复合材料的导电性和力学性能。高分子蜡改善复合材料电学及力学性能的效果优于液体石蜡。交联剂使复合材料导电性变差,但力学性能提高     

导电炭墨在高分子材料中的应用

本文述及导电高分子材料中使用导电炭炭黑种类，性能和导电机理，影响炭黑复合材料导电性的因素，复合是电高分子材料的应用领域等。     

炭黑填充复合型导电聚合物的研究进展

在聚合物基体中添加导电炭黑以降低聚合物的电阻率,是目前最为常用的制备导电聚合物的方法。综述了炭黑填充复合型导电聚合物的研究进展。对影响复合材料导电性能及渗滤阈值的因素进行了讨论。重点介绍了使用共混聚合物作基体,并利用炭黑在共混基体中的非均相分布来降低炭黑用量的研究。     

导电炭黑在抗静电聚合物中应用

将特殊的炭黑粒子均匀分散在聚合物基体中,能在一定温度范围内有效提高材料电阻值,可形成一种复合型导电高分子材料。本文综述了导电炭黑填充聚合物的研究进展,对影响复合材料的导电性能及因素进行了探讨。重点介绍了使用共混聚合物作基体,利用特种导电炭黑改善聚合材料的抗静电性的研究。     

炭黑填充聚合物的导电性研究

研究了炭黑（ＣＢ）填充聚合物的导电特征，并着重讨论了ＣＢ种类、含量与材料体积电阻率的关系以及加工条件、交联剂和非导电填料对材料导电性的影响。     

填料组成和温度对导电橡胶性能的影响

由不同比例的短碳纤维和导电炭黑填充的丁腈橡胶复合材料，对其电性能和机械性能进行研究。结果表明：纤维能提供电荷远距离传递，炭黑改善纤维间接触以及增强聚合物基体和提高材料的机械性能。复合材料的导电性随填料组成中短碳纤维浓度的增加而提高，而机械性能却变差。当温度低于４０℃，各种填料组成对复合材料的导电性的影响可忽略；当超出４０℃时，复合材料的导电性的提高或降低取决于填料组成。温度对导电性的影响可以通过聚合物与填料不同的热膨胀以及电子发射理论来加以解释。     

炭黑填充复合导电高分子材料研究和应用

概述了目前国内外炭黑填充复合导电高分子材料的研究现状、进展及应用，主要对炭黑性质，用量，基体树脂性能以及导电复合材料的特性进行了讨论。     

废碳填充丁腈橡胶的物理机械性能与电性能

正纯聚合物是极好的电绝缘体,但是通过简单混入优良导电材料即可改性成为好的导电体。将聚合物改性使之具有高导电性扩展了聚合物在最新领域中的应用。很早就已通过混入导电材料如金属粉、炭黑和碳纤维来降低绝缘聚合物的电阻来制造聚合物复合材料。形成不间断承载路径,赋予聚合物基质导电性所需导电填料的临界量称作逾渗阈值。在这些导电复合材料中,当温度接近于聚合物熔点时,一些CB-聚合物和CF-聚合物复合材     

DBSA掺杂聚苯胺在导电塑料中的应用

以十二烷基苯磺酸(DBSA)作为掺杂酸合成掺杂态聚苯胺,并以掺杂态聚苯胺和特导炭黑做为导电填料,线性低密度聚乙烯(LLDPE)为基体,乙烯-乙酸乙烯酯(EVA)作为增塑剂,掺杂态聚苯胺和特导炭黑作为导电填料,制备导电塑料。使用四探针法测定了掺杂态聚苯胺和导电塑料的电导率,使用扫描电子显微镜、X射线衍射、红外光谱法、热重法对掺杂态聚苯胺进行分析和表征,并且测试了导电塑料的力学性能和流动性能。研究表明:掺杂态聚苯胺具有良好的导电性能,可以作为导电塑料的导电填料使用;并且使用掺杂态聚苯胺和特导炭黑作为导电填料制备的导电塑料比单独使用掺杂态聚苯胺具有更好的导电性能,力学性能。     

炭黑填充EVA/HDPE发泡材料的阻温特性

采用开炼共混、模压发泡的方法制备了特导炭黑填充乙烯-乙酸乙烯酯（EVA）/高密度聚乙烯（PE-HD）发泡导电复合材料。考察了 Blends of ethylene-vinyl acetate (EVA)/high-density polyethylene (PE-HD) was filled with specially conductive carbon black（HG-1P）forming a foam conductive composite via open-calendaring and mold foaming. The effect of the composition on the percolation threshold, pore structures, and temperature-resistance behavior were investigated. When the mass proportion of EVA to PE-HD was 80 to 20, the content of specially conductive carbon black was 10 wt %, the content of AC was 4 wt %,and the cross-linker DCP was 0.5 wt %, the composite showed a fine pore structure and good switching characteristics, a clear negative temperature coefficient (NTC) was observed.     

Effect of processing parameters, applied pressure and temperature on the electrical resistivity of rubber-based conductive composites

Carbon black- and short carbon fibre (SCF)-filled conductive composites were prepared from ethylene vinyl acetate (EVA), ethylene propylene diene (EPDM) rubber and their 50:50 blend. The electrical resistivity of carbon black- and SCF-filled composites were measured under different conditions. The electrical conductivity of filled polymer composites is due to the formation of a continuous conductive network in the polymer matrix. These conductive networks involve specific arrangement of conductive elements so that the electrical paths are formed for free movement of electrons. It was found that electrical conductivity of filled conductive composites depends on different processing parameters like mixing time, rotor speed, mixing temperature, vulcanization time and pressure and service conditions like applied pressure and temperature. The results of different experiments have been discussed in light of break down and formation of the continuous conductive network.     

Conductive rubbers made by adding conductive carbon black to EVA,EPDM, and EVA–EPDM blends

Abstract

Electrically conductive rubbers have been prepared by the incorporation of conductive carbon black into ethylene/vinyl acetate (EVA) copolymers, ethylene/propylene/diene monomer (EPDM) terpolymers, and a 50 : 50 EVA–EPDM blend. The electrical and mechanical properties of these composites have been studied. The percolation limit for high conductivity in the filled rubbers depends on their compatibility as well as the viscosity and polarity of the rubbers. The electrical resistivity decreases with increasing temperature and the activation energy for conduction decreases with increasing filler loading. The temperature dependence of resistivity can be correlated with data from DSC, XRD, and DMTA measurements. Electrical set and electrical hysteresis have been observed during heating–cooling cycles. The change in resistivity with applied pressure is also reported.     

Voltage–current characteristics of high-density polyethylene conductive composites

The high-density polyethylene (HDPE) conductive composites filled separately with carbon fibers (CFs), ethylene-vinyl acetate copolymer (EVA), and three kinds of carbon blacks (CBs) (including different diameter, BET specific area, and DBP value) were prepared, to investigate the influence of the property, size, and content of the conductive fillers on the nonlinear voltage–current characteristics of the HDPE conductive composites. The results showed that the relationship between the electric current density and the electric field intensity of the three HDPE/CB composites including the HDPE/CF composites, the HDPE/CB/CF composites, and the HDPE/EVA/CB composites was nonlinear. The nonlinear conductivity index of the HDPE/CF composites was kept a low level comparing to the HDPE/CB composites, the HDPE/CB/CF composites, and the HDPE/EVA/CB composites. Moreover, the nonlinear conductive behavior mechanisms were discussed.     

炭黑粒子偶联处理的HDPE复合材料PTC性能研究

研究了以HDPE为基体,工业炭黑（CB）为导电粒子的高分子复合材料的PTC（正温度系数）导电行为。考察了炭黑及偶联剂种类、用量对高分子PTC导电材料性能的影响,并探讨了偶联接枝机理,从理论上对改性效果进行了分析。结果表明,对炭黑,尤其是槽法炭黑 表面处理可显著提高复合材料的电导率及减小NTC（负温度系数）效应;钛酸酯偶联剂具有最佳改性效果,可明显改善炭黑粒子分散状态,增强材料的PTC效应,其最佳用量为1％质量份。     

PE-HD/CNTs/CB复合材料的导电行为研究

用溶液超声分散法制备了高密度聚乙烯/碳纳米管/炭黑(PE-HD/CNTs/cB)导电复合材料,研究了CNTs与CB的比例以及两者的总含量对复合材料导电行为的影响.结果表明,CNTs与CB以不同比例混合的试样其渗流阈值较PE-HD/CNTs高,比PE-HD/CB的低,CNTs与CB在材料内部可能形成了共同的导电网络;当其...     

四种导电炭黑的性能研究

研究了４种具有不同聚集态结构度（ＤＢＰ吸收值）和孔隙度（吸碘值）的导电炭黑对ＮＲ硫化胶物理机械性能及导电性能的影响。实验结果表明,ＮＲ填充ＣＳＦ导电炭黑后,硫化胶的物理机械性能相对最好,导电性能明显优于填充等量乙炔炭黑的ＮＲ硫化胶,而稍逊于ＮＪＦ和ＩＮＦ填充者。实验发现,用不同改性剂对炭黑改性后,可使硫化胶强伸性能明显提高,而导电性能稍有下降。ＣＳＦ等导电炭黑不仅适合制造复合型导电高分子材料,而且