基于碳素材料的自发热木质复合材料的电热性能研究
发布时间：2018-09-03 11:13
【摘要】：基于碳素材料的自发热复合材料是一种新型木质材料,具有自发热功能,主要应用于发热地板上,该材料的开发对节约能源、减少污染具有十分重要的意义。为了让木质材料具有自发热功能,本文以木质材料为主要原料,碳素材料为增强发热材料,采用纳米发热技术和人造板技术相结合的工艺,制备自发热木质复合材料(石墨自发热复合材料、碳毡自发热复合材料、远红外电热油墨自发热复合材料),并分别对三种自发热材料的电热性能进行了研究。论文的主要研究结果有如下：(1)自发热石墨/木质复合材料最优工艺：石墨粒度为300目,石墨加量为50%,钛酸酯偶联剂加量为5%,通过试验发现在此条件下导热性能最好,复合材料的导热系数为0.0666W/m·K。当输入功率为20W时,通电15min后板面温度达到36℃。(2)自发热碳毡/木质复合材料最优工艺：3mm规格的碳毡制备的复合材料,通过试验发现在此条件下,材料的导热性能以及电热性能最好,测得材料的导热系数为0.0858W/m·K。当输入功率为10W时,通电15min后板面温度达到36℃；当输入功率为15W时,通电15min后板面温度达到41℃；当输入功率为20W时,通电15min后板面温度达到45℃。(3)自发热远红外电热油墨/木质复合材料：测试发现三种涂覆形试均可性,板面温差较小,温度分布较均匀,由于涂覆的形状不同,同一功率下,不同涂覆形状发热情况也不尽相同。室温下当输入功率为l0W时,通电15min后全涂覆的板面温度达到31℃,条状涂覆的板面温度达到31℃,U型回路涂覆的板面温度达到33℃；室温下当输入功率为15W时,通电15rmin后全涂覆的板面温度达到35℃,条状涂覆的板面温度达到36℃,U型回路涂覆的板面温度达到36℃；室温下当输入功率为20W时,通电15min后全涂覆的板面温度达到38℃,条状涂覆的板面温度达到40℃,U型回路涂覆的板面温度达到45℃。(4)以计算流体力学传热学为理论基础,利用Solidworks软件建立了材料的结构模型,并用Fluent软件对升温过程中材料的板面温度变化进行动态模拟仿真,将模拟结果与试验测试数据进行对比,结果基本一致,验证了仿真模型的有效性。
[Abstract]:Self-heating composite based on carbon material is a new type of wood material, which has the function of self-heating and is mainly used on the heating floor. The development of this material is of great significance to save energy and reduce pollution. In order to make the wood material have the function of self-heating, this paper takes the wood material as the main raw material, the carbon material as the reinforced heating material, and adopts the technology of combining nano-heating technology and wood-based panel technology. Self-heating wood composites (graphite self-heating composites, carbon-felt self-heating composites, far-infrared electrothermal ink self-heating composites) were prepared, and the electrothermal properties of three kinds of self-heating materials were studied. The main results are as follows: (1) the optimum technology of self-heating graphite / wood composite is: graphite particle size is 300 mesh, graphite dosage is 50 and titanate coupling agent is 5. It is found that the thermal conductivity is the best under this condition. The thermal conductivity of the composite is 0.0666W/m K. When the input power is 20W, the surface temperature of the plate after electrified 15min reaches 36 鈩，
本文编号：2219818
[Abstract]:Self-heating composite based on carbon material is a new type of wood material, which has the function of self-heating and is mainly used on the heating floor. The development of this material is of great significance to save energy and reduce pollution. In order to make the wood material have the function of self-heating, this paper takes the wood material as the main raw material, the carbon material as the reinforced heating material, and adopts the technology of combining nano-heating technology and wood-based panel technology. Self-heating wood composites (graphite self-heating composites, carbon-felt self-heating composites, far-infrared electrothermal ink self-heating composites) were prepared, and the electrothermal properties of three kinds of self-heating materials were studied. The main results are as follows: (1) the optimum technology of self-heating graphite / wood composite is: graphite particle size is 300 mesh, graphite dosage is 50 and titanate coupling agent is 5. It is found that the thermal conductivity is the best under this condition. The thermal conductivity of the composite is 0.0666W/m K. When the input power is 20W, the surface temperature of the plate after electrified 15min reaches 36 鈩，
本文编号：2219818
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