發(fā)布時(shí)間：2019-02-21 07:36

【摘要】：為了提高保溫材料的性能，本文設(shè)計(jì)了正交試驗(yàn)和混料試驗(yàn)，研制出保溫性能、蓄熱性能等綜合性能優(yōu)良的新型相變保溫材料，綜合分析了其相變組分對(duì)保溫材料性能的影響規(guī)律。用掃描電鏡和超景深三維顯微鏡等現(xiàn)代測(cè)試手段，分析了此相變保溫材料的物相和微觀結(jié)構(gòu)，探討了相變組成影響保溫材料性能的機(jī)理。 研究結(jié)果表明：石蠟、十水硫酸鈉、聚乙二醇都可以有效提高相變保溫材料的保溫性能和蓄熱性能。正交試驗(yàn)中相變保溫材料的最終配合比為：石蠟為1.7%，，物理發(fā)泡劑為15%，過氧化氫為13%，聚丙烯纖維為0.4%，此時(shí)相變保溫材料的導(dǎo)熱系數(shù)為0.068W/m·K，相變蓄能率為3.142W/kg，抗壓強(qiáng)度為0.44MPa，抗折強(qiáng)度為0.31MPa，密度為244.1kg/m3。 通過混料設(shè)計(jì)試驗(yàn)方法，確定了復(fù)合相變保溫材料的相變組分為：石蠟58.7%，聚乙二醇27.5%，十水硫酸鈉13.8%，其導(dǎo)熱系數(shù)、相變蓄能率分別為0.063W/m·K、3.403W/kg。與單摻石蠟的相變保溫材料相比，其導(dǎo)熱系數(shù)降低了7.35%，相變蓄能率提高了8.31%。相變保溫材料改用復(fù)合相變組分后保溫性能和蓄熱性能得到進(jìn)一步提高。 微觀分析，加入氣泡后改變了相變保溫墻體材料的內(nèi)部孔結(jié)構(gòu)，形成多孔基結(jié)構(gòu)，使這種新型相變保溫材料具有良好的保溫性能和蓄熱性能。 本文初步揭示了相變保溫材料中各組分對(duì)其保溫性能、蓄熱性能等的影響規(guī)律，有助于進(jìn)一步研究相變保溫材料的其他性能。
[Abstract]:In order to improve the properties of thermal insulation materials, orthogonal test and mixing test were designed, and a new type of phase change insulation materials with excellent comprehensive properties, such as thermal insulation and heat storage properties, was developed. The effect of phase change components on the properties of thermal insulation materials was analyzed. The phase and microstructure of the phase change insulating material were analyzed by means of scanning electron microscope and three dimensional hyperfield microscope, and the mechanism of phase transition composition affecting the properties of the thermal insulation material was discussed. The results show that paraffin, sodium sulfate decahydrate and polyethylene glycol can effectively improve the thermal insulation performance and heat storage performance of phase change insulation materials. The final mix ratio of phase change insulation material in orthogonal test is as follows: paraffin is 1.7, physical foaming agent is 15, hydrogen peroxide is 13.3, polypropylene fiber is 0.4.The thermal conductivity of phase change insulation material is 0.068W/m K. The phase change storage rate is 3.142 W / kg, the compressive strength is 0.44 MPA, the flexural strength is 0.31 MPA, and the density is 244.1 kg 路m ~ (3). The phase change components of composite phase change insulating material were determined by mixing design test method: paraffin 58.7, polyethylene glycol 27.55.and sodium sulfate decahydrate 13.8.The thermal conductivity and energy storage rate of phase change were 0.063W/m K, respectively. 3.403W/kg. Compared with the phase change insulating material with only paraffin, the thermal conductivity is decreased by 7.35 and the energy storage rate of phase change is increased by 8.31%. The thermal insulation and heat storage properties of the composite phase change materials were further improved. The microcosmic analysis shows that the internal pore structure of the phase change insulation wall material is changed and the porous base structure is formed after the addition of bubble, which makes the new phase change insulation material have good thermal insulation performance and heat storage performance. This paper preliminarily reveals the influence of the components in the phase change insulation material on its thermal insulation performance and heat storage performance, which is helpful to further study the other properties of the phase change insulation material.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU551

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