共查询到19条相似文献,搜索用时 93 毫秒
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正由武汉理工大学申请的专利(公开号CN105913450A,公开日期2016-08-31)"基于神经网络图像处理的轮胎橡胶炭黑分散度评价方法及系统",涉及一种基于神经网络图像处理的轮胎橡胶炭黑分散度评价方法及系统,该方法包括以下步骤:(1)获取样本集中的胶料图像,对其进行预处理,并提取特征数据;(2)获取样本集中一部分胶料图像的特征数据作为训练数据,分别根据BP 相似文献
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炭黑良好的分散性是塑料给水管材质量安全的关键指标之一。便捷、经济、高效的检测技术是精确评判炭黑分散性的保障。为此,如何实现便捷、经济、高效的检测成为当前关心的问题。该文对当前塑料材质炭黑分散性检测技术进行综述,以期为相关检验检测工作顺利开展提供支持。 相似文献
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炭黑分散度独立成分提取Fisher判别的研究 总被引:1,自引:0,他引:1
探讨炭黑分散度独立成分提取Fisher判别的模型建立并设计其应用软件系统。建模过程包括图像采集、图像处理、特征指标体系设立、独立成分提取、模型建立与分析。该判别法适用于硫化胶和混炼胶炭黑分散度的识别,识别准确率较高(约90%)。应用软件系统操作方便。 相似文献
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There are few investigations of the influence of filler dispersion on the thermal diffusivity of carbon black rubber compounds. In this article, experimental results of a cured styrene–butadiene rubber (SBR) compound are presented in the range of temperatures between 210 and 350 K at four levels of dispersion obtained in a laboratory mill. The results of thermal diffusivity measurements are discussed in the frame of competitive mechanisms appearing during mixing and involving the breakdown of agglomerates into aggregates and particles in the rubber matrix. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1379–1385, 1999 相似文献
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纳米炭黑分散方法和含量对低碳镁碳材料力学性能的影响 总被引:2,自引:1,他引:1
采用加KH-550偶联剂和高速搅拌的方法,将不同量的纳米炭黑N220均匀分散在酚醛树脂中,制成纳米炭黑-酚醛树脂复合结合剂,研究了纳米炭黑含量对复合结合剂黏度及其经1500℃炭化后碳结构的影响,并采用这些复合结合剂制备了w(C)=3%的低碳镁碳试样。研究了纳米炭黑含量(相对于酚醛树脂的质量分别为0、2.5%、5%、10%和15%)对低碳镁碳试样力学性能的影响,同时还与将纳米炭黑以预混合粉方式加入的低碳镁碳试样的力学性能进行了对比。结果发现:1)随着纳米炭黑含量的增加,复合结合剂的黏度迅速增大;2)纳米炭黑-酚醛树脂复合物经1500℃炭化后的碳结构呈光学同向性,但其微气孔数量减少,微气孔尺寸减小,碳结构的石墨化程度提高;3)随着纳米炭黑加入量的增加,低碳镁碳试样的常温抗折强度、高温抗折强度和常温耐压强度逐渐增大;4)将纳米炭黑直接分散在细粉中加入时,试样的常温抗折强度、高温抗折强度和常温耐压强度均比以纳米炭黑-酚醛树脂方式加入时差。 相似文献
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在三釜流程聚酯装置上,采用原液着色方式生产黑色聚酯,对炭黑分散剂及其浆料的稳定性,以及炭黑浆料的注入方式等进行了探讨。结果表明:以自制的TA202为分散剂制得质量分数为20%的炭黑/乙二醇浆料,采用预缩聚前注射的方式,调整熔体过滤与混合条件,能制得炭黑分散性良好易于纺丝的黑色聚酯熔体。 相似文献
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With the help of a counter‐rotating transparent rheometer equipped with an optical microscope, the erosion of single, commercial carbon black agglomerates suspended in a polyisobutylene fluid was accurately recorded in situ. We observed that clouds of very small aggregates were leaving the agglomerate at 45 and 225° in the shear gradient–flow direction plane, where the stress is maximum. The distribution of the arrached aggregates is more efficient when the carbon black agglomerate is more asymmetric. A spherical agglomerate of critical radius R0 will reach a radius Rt at time t following R ? R = at, a being a constant. This implies that the rate at which the number of aggregates is leaving the agglomerate is a constant, independent of the size of the agglomerate. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 1627–1629, 2001 相似文献
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Aggregates of carbon black (CB) in a polymer matrix have a tendency to form a CB network. The dynamic mechanical properties of binary systems of chlorinated polyethylene (CPE) and CB or 3,9‐bis{1,1‐dimethyl‐2[β‐(3‐tert‐butyl‐4‐hydroxy‐5‐methylphenyl)propionyloxy]ethyl}‐2,4,8,10‐tetraoxaspiro[5,5]‐undecane (AO‐80) and their ternary systems were investigated. It was found that the dynamic mechanical properties of those systems depend on the colloidal properties, surface oxides, and surface modification of CB. For binary systems of CPE and CB, oxidized CB gives a high modulus at low strain amplitude and a large Payne effect compared with untreated CB. In contrast, the reverse effect was observed for their ternary systems. Consequently, a good micro‐dispersion is obtainable by surface modification due to physical adsorption of AO‐80 on oxidized CB particles via hydrogen bonds. © 2003 Society of Chemical Industry 相似文献
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综述了炭黑原生粒子的粒度、原生聚集体的结构对其在胶印黑墨体系中分散难易的影响,便于原材料——炭黑的选择。 相似文献