环氧树脂、水泥及其复合发泡保温材料的制备与性能研究
发布时间：2018-11-19 11:30
【摘要】：每年的建筑能耗都会造成大量的能源浪费，而保温隔热材料在建筑节能方面起着举足轻重的作用。传统的有机保温材料虽然质轻、保温性能较好，但存在非常严重的易燃缺陷，无机保温隔热材料保温性能不足，也难以满足当今建筑节能材料的要求。有机/无机复合保温隔热材料结合了有机和无机保温材料的优势，有望克服各自的不足，做到既保温节能，又防火安全。 本文制备了三种保温材料：环氧树脂、水泥以及环氧树脂/水泥复合发泡保温材料，并采用超景深三维显微系统、万能材料试验机等探索了各因素对材料微观和宏观性能的影响，最后将三种材料的综合性能进行比较，，结果表明： 对于环氧发泡保温材料，改性纳米SiO2、发泡剂、聚丙烯纤维、固化剂二乙烯三胺用量以及发泡成型温度都是影响其微观和宏观性能的重要参数，本章确定的最佳配方为：改性纳米SiO2用量为1.0%；发泡剂最佳用量为10%；聚丙烯纤维用量1.0%；固化剂二乙烯三胺用量为10%；最佳工艺条件为温度70℃。在此配方下得到的环氧发泡材料的综合性能为：抗压强度1.119MPa，表观密度118.9kg/m3，吸水率1.9%；导热系数0.043w/m·k，属于B级可燃性材料; 对于水泥发泡保温材料，因本实验中是采用化学发泡剂Al粉进行发泡的，化学反应速度较快，故水泥料浆体系能否快硬早强以和发泡剂的发泡速率相匹配是制备水泥发泡保温材料的关键。对普通硅酸盐水泥进行改性，当高铝水泥掺量为20份，Li2CO3掺量为3份时高铝水泥-普通硅酸盐水泥复合水泥体系初终凝时间最短，分别为：12min，22min，接近气体的稳泡时间；利用此复合水泥料浆制备水泥发泡保温材料，各用量最佳配比为：Al粉用量15%，聚丙烯纤维用量2.0%，最佳发泡成型温度为65℃；此配方下制得的水泥发泡保温材料的综合性能为：抗压强度0.619MPa，容重285kg/m3，吸水率15.4%，导热系数0.079w/m·k，属于A级不燃材料； 对于环氧树脂/水泥复合发泡材料，采用的水泥料浆体系为第三章所制备快硬早强复合水泥体系。本章确定了制备的最佳配方为：环氧树脂和水泥的比例为1:8，Al粉掺量为6%，聚丙烯纤维用量为1.0%，硅粉掺量为11%，发泡成型温度为70℃，复合发泡的综合性能为：抗压强度4.822MPa，容重212.6kg/m3，吸水率13%，导热系数0.068w/m·k，属于A级不燃材料； 将水泥基复合发泡材料的性能和水泥发泡材料以及环氧树脂发泡材料相比较，可以看出复合发泡材料质轻高强，属于A级不燃材料，既可以保温节能，又可以防火安全，综合性能明显优于水泥发泡材料和环氧树脂发泡材料，且成本较低，市场应用前景广阔。
[Abstract]:The energy consumption of buildings every year will cause a large amount of energy waste, and heat insulation materials play an important role in building energy conservation. Although the traditional organic thermal insulation materials are light in weight and good in thermal insulation performance, they have very serious flammable defects, and the thermal insulation properties of inorganic thermal insulation materials are insufficient, and it is difficult to meet the requirements of building energy saving materials nowadays. Organic / inorganic composite thermal insulation materials combine the advantages of organic and inorganic insulation materials, which are expected to overcome their shortcomings and achieve both heat preservation and energy saving and fire safety. In this paper, three kinds of insulating materials were prepared: epoxy resin, cement and epoxy resin / cement composite foaming insulation materials. The effects of various factors on the microcosmic and macroscopic properties of the materials were explored. Finally, the comprehensive properties of the three kinds of materials were compared. The results showed that: for epoxy foaming insulation materials, modified nano-scale SiO2, foaming agent, The content of polypropylene fiber, curing agent diethylenetriamine and foaming temperature are the important parameters that affect the microcosmic and macroscopic properties of polypropylene fiber. In this chapter, the optimum formula is determined as follows: the dosage of modified nanometer SiO2 is 1.0g; The optimum amount of foaming agent is 10; the dosage of polypropylene fiber is 1.0; the amount of curing agent diethylenetriamine is 10; the optimum technological condition is 70 鈩
本文编号：2342177
[Abstract]:The energy consumption of buildings every year will cause a large amount of energy waste, and heat insulation materials play an important role in building energy conservation. Although the traditional organic thermal insulation materials are light in weight and good in thermal insulation performance, they have very serious flammable defects, and the thermal insulation properties of inorganic thermal insulation materials are insufficient, and it is difficult to meet the requirements of building energy saving materials nowadays. Organic / inorganic composite thermal insulation materials combine the advantages of organic and inorganic insulation materials, which are expected to overcome their shortcomings and achieve both heat preservation and energy saving and fire safety. In this paper, three kinds of insulating materials were prepared: epoxy resin, cement and epoxy resin / cement composite foaming insulation materials. The effects of various factors on the microcosmic and macroscopic properties of the materials were explored. Finally, the comprehensive properties of the three kinds of materials were compared. The results showed that: for epoxy foaming insulation materials, modified nano-scale SiO2, foaming agent, The content of polypropylene fiber, curing agent diethylenetriamine and foaming temperature are the important parameters that affect the microcosmic and macroscopic properties of polypropylene fiber. In this chapter, the optimum formula is determined as follows: the dosage of modified nanometer SiO2 is 1.0g; The optimum amount of foaming agent is 10; the dosage of polypropylene fiber is 1.0; the amount of curing agent diethylenetriamine is 10; the optimum technological condition is 70 鈩
本文编号：2342177
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