【摘要】：為減少地?zé)峁┡^程中的能源損耗,提高傳熱效率,開展木質(zhì)導(dǎo)熱材料的強(qiáng)化導(dǎo)熱機(jī)理及性能研究。該研究以木質(zhì)材料為主要原料,碳素材料為導(dǎo)熱材料,采用納米發(fā)熱技術(shù)和人造板制造技術(shù)相結(jié)合的工藝制備導(dǎo)熱木質(zhì)復(fù)合材料,重點(diǎn)研究木質(zhì)導(dǎo)熱材料的工藝優(yōu)化,強(qiáng)化導(dǎo)熱機(jī)理及材料導(dǎo)熱性能。研究表明:1)當(dāng)石墨填充量15%、石墨粒徑2 500目、偶聯(lián)劑為鈦酸酯時(shí)制備的導(dǎo)熱材料其各項(xiàng)力學(xué)性能指標(biāo)均達(dá)到國(guó)標(biāo)GB/T 11718—2009《中密度纖維板》的要求。2)最優(yōu)工藝條件下材料的導(dǎo)熱系數(shù)為0.266 W/(m·K),與普通木質(zhì)復(fù)合材料的導(dǎo)熱系數(shù)0.045 W/(m·K)相比,增大了約5倍左右。3)相同熱流量的條件下,熱量傳遞至普通木質(zhì)材料表面溫度為41.5℃;傳遞到導(dǎo)熱材料溫度為47.95℃。因此,導(dǎo)熱材料較普通材料的導(dǎo)熱性能有明顯的提高。
[Abstract]:In order to reduce energy loss and improve heat transfer efficiency in geothermal heating process, the enhanced heat conduction mechanism and performance of wood thermal conductive materials were studied. In this study, wood materials were used as main raw materials, carbon materials as heat conduction materials, and nano-heating technology combined with wood-based panel manufacturing technology to prepare heat-conductive wood composites. The emphasis was on the optimization of the technology of wood thermal conductive materials. Strengthen heat conduction mechanism and material thermal conductivity. The results show that: 1) when the graphite content is 15%, the diameter of graphite is 2 500 mesh. The mechanical properties of the thermal conductive materials prepared with titanate are up to the requirements of the national standard GB/T 11718-2009. 2) the thermal conductivity of the materials is 0.266 W / (m K), under the optimum technological conditions. Compared with the ordinary wood composites, the thermal conductivity of the composites is about 5 times higher than that of the ordinary wood composites. 3) under the same heat flow rate, the heat transfer to the surface temperature of the ordinary wood composites is 41.5 鈩，

本文編號(hào)：2406465