基于GA及大津法的碳—木纖維材料電學研究
發(fā)布時間：2018-12-07 12:43
【摘要】：地球面臨著森林資源緊縮,環(huán)境污染嚴重,溫室效應持續(xù),霧霾天氣頻發(fā)等諸多生態(tài)問題,迫使世界各國對生態(tài)環(huán)境的保護及自然資源可持續(xù)利用的重視與日俱增,政府和公眾對于環(huán)保綠色資源利用的堅決態(tài)度使得天然環(huán)保材料的研究近些年來得到廣泛關注。加之電氣時代的到來,電磁污染及靜電污染等材料污染干擾著人們的生活,研發(fā)出既保護環(huán)境又能防止電磁污染和靜電作用的生活材料成為目前研究人員關注的焦點,同時也將帶來生活優(yōu)質化的新方向。本論文主要研究木—碳纖維復合材料,首先通過熱壓工藝完成復合材料樣本的制備,然后根據(jù)樣本對其裁板進行宏觀性能的測試,其中包括測量表面電阻率、電磁屏蔽性能等電學性能,對所得數(shù)據(jù)進行簡單分析,把握宏觀上變換趨勢；為更加準備把握復合材料性能變化,利用基于遺傳算法的圖像分割技術對木-碳纖維復合材料進行微觀電鏡圖像分割,選取有代表性的復合材料樣板電鏡圖像對其進行特征提取,提取出碳纖維的形態(tài)特征,并將其有代表性的形態(tài)特征與其宏觀電學性能進行比較研究,根據(jù)大體規(guī)律研究材料微觀特征與宏觀性能之間的聯(lián)系,根據(jù)數(shù)據(jù)研究,發(fā)現(xiàn)提取出的微觀形態(tài)可以證明出碳纖維在木纖維中是否分布均勻與材料電學性能是否良好可用有直接重要聯(lián)系,根據(jù)復合材料微觀結構的可設計性特點,可以根據(jù)微觀特征對宏觀性能上好的影響條件對材料進行合理化設計,發(fā)現(xiàn)微觀上只有解決碳纖維在材料中均勻分布且有相互搭接才能提高其宏觀性能,從而實現(xiàn)有目的性的提高宏觀性能的目標。通過論文分析研究,科學的將材料微觀特征與宏觀聯(lián)系有效結合,證明了碳纖維的均勻性及其搭接形成閉合回路對于其電學宏觀性能影響頗大,從而證明了復合材料導電原理并為制得性能良好的板材提供目標性指導,同時也可以通過觀察其微觀性能大體確定該材料是否可以用于作為電學材料進行使用。
[Abstract]:The earth is faced with many ecological problems, such as tight forest resources, serious environmental pollution, persistent Greenhouse Effect, frequent haze weather, etc., which forces countries in the world to pay more and more attention to the protection of ecological environment and the sustainable use of natural resources. The firm attitude of the government and the public towards the use of green resources makes the research of natural environmental protection materials receive wide attention in recent years. In addition, with the arrival of the electric age, electromagnetic pollution and electrostatic pollution and other materials pollution interfere with people's lives. The research and development of living materials that can protect the environment and prevent electromagnetic pollution and electrostatic action have become the focus of attention of researchers at present. At the same time, it will also bring a new direction of quality of life. In this paper, the wood-carbon fiber composites are studied. Firstly, the samples of the composites are prepared by hot pressing, and then the macroscopic properties of the cutting boards are tested according to the samples, including the measurement of the surface resistivity. Electromagnetic shielding performance and other electrical properties, the data obtained by simple analysis, grasp the macro-transformation trend; In order to get a better grasp of the performance change of composite material, the image segmentation technology based on genetic algorithm is used to segment the wood carbon fiber composite with microscopic electron microscope. The typical electron microscope images of composite materials were selected to extract the morphological features of carbon fiber, and the morphological characteristics of carbon fibers were compared with their macroscopic electrical properties. According to the general law, the relationship between the microscopic characteristics and the macroscopic properties of the material is studied, and according to the data, It is found that the extracted microscopic morphology can prove that the distribution of carbon fiber in wood fiber is directly related to the good availability of electrical properties of the material. According to the design characteristics of the microstructure of composite materials, We can rationalize the material design according to the good influence conditions of the macroscopic properties according to the microscopic characteristics. It is found that only by solving the uniform distribution of carbon fiber in the material and having overlap with each other can the macroscopic properties of carbon fiber be improved. In order to achieve a purposeful goal of improving macro performance. Through the analysis and study of the paper, it is proved that the homogeneity of carbon fiber and its lap forming closed loop have great influence on the macroscopic electricity of carbon fiber. The conductive principle of the composite material is proved and the target guidance is provided for the plate with good properties. At the same time, it can be determined whether the composite material can be used as electrical material by observing its microscopic properties.
【學位授予單位】：東北林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB33
本文編號：2367226
[Abstract]:The earth is faced with many ecological problems, such as tight forest resources, serious environmental pollution, persistent Greenhouse Effect, frequent haze weather, etc., which forces countries in the world to pay more and more attention to the protection of ecological environment and the sustainable use of natural resources. The firm attitude of the government and the public towards the use of green resources makes the research of natural environmental protection materials receive wide attention in recent years. In addition, with the arrival of the electric age, electromagnetic pollution and electrostatic pollution and other materials pollution interfere with people's lives. The research and development of living materials that can protect the environment and prevent electromagnetic pollution and electrostatic action have become the focus of attention of researchers at present. At the same time, it will also bring a new direction of quality of life. In this paper, the wood-carbon fiber composites are studied. Firstly, the samples of the composites are prepared by hot pressing, and then the macroscopic properties of the cutting boards are tested according to the samples, including the measurement of the surface resistivity. Electromagnetic shielding performance and other electrical properties, the data obtained by simple analysis, grasp the macro-transformation trend; In order to get a better grasp of the performance change of composite material, the image segmentation technology based on genetic algorithm is used to segment the wood carbon fiber composite with microscopic electron microscope. The typical electron microscope images of composite materials were selected to extract the morphological features of carbon fiber, and the morphological characteristics of carbon fibers were compared with their macroscopic electrical properties. According to the general law, the relationship between the microscopic characteristics and the macroscopic properties of the material is studied, and according to the data, It is found that the extracted microscopic morphology can prove that the distribution of carbon fiber in wood fiber is directly related to the good availability of electrical properties of the material. According to the design characteristics of the microstructure of composite materials, We can rationalize the material design according to the good influence conditions of the macroscopic properties according to the microscopic characteristics. It is found that only by solving the uniform distribution of carbon fiber in the material and having overlap with each other can the macroscopic properties of carbon fiber be improved. In order to achieve a purposeful goal of improving macro performance. Through the analysis and study of the paper, it is proved that the homogeneity of carbon fiber and its lap forming closed loop have great influence on the macroscopic electricity of carbon fiber. The conductive principle of the composite material is proved and the target guidance is provided for the plate with good properties. At the same time, it can be determined whether the composite material can be used as electrical material by observing its microscopic properties.
【學位授予單位】：東北林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB33
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，本文編號：2367226
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