纤维增强复合材料保温板的制备研究及应用

发布时间：2018-01-16 23:01

本文关键词：纤维增强复合材料保温板的制备研究及应用　出处：《扬州大学》2013年硕士论文　论文类型：学位论文

【摘要】：近年来,随着能源价格的上升、电力需求的猛增,促使建筑节能得到人们的广泛关注。在建筑围护结构中,墙体在采暖能耗中所占的比例最大,约占总能耗的32.1%-36.2%。目前,墙体保温材料种类繁多,但都存在一定的缺陷和不足,开发新型保温材料迫在眉睫纤维增强复合材料保温板是以聚苯颗粒、水泥、粉煤灰、可再分散乳胶粉、中空纤维、羟丙基甲基纤维素及憎水粉为原材料制备而成的。该保温板高强质轻、隔热保温,它既能够在工厂预制,实现批量化生产,提高劳动生产率;又能够在施工现场裁剪、拼装,提高施工效率。本文从优化纤维增强复合材料保温板配比的角度出发,研究分析了原材料各个因素对保温板主要性能的影响。研究表明,一定级配的聚苯颗粒制备的保温板导热系数低于单一粒径,随着聚苯颗粒的增加,保温板导热系数先减小后增大；42.5级普通硅酸盐水泥制备的保温板力学性能明显优于32.5级普通硅酸盐水泥,随着水泥掺量的增加,保温板抗拉强度、抗压强度逐渐增大；粉煤灰代替部分水泥,可以有效降低保温板的导热系数,随着粉煤灰掺量的增加,保温板的抗拉强度、抗压强度、导热系数均减小；可再分散乳胶粉掺量的增加能够显著提高保温板的抗拉强度、抗压强度,而对导热系数影响不大；中空纤维能够改善保温板的抗拉强度、抗压强度,随着掺量的增加,能够明显降低保温板的干燥收缩值；羟丙基甲基纤维素掺量的增加会逐渐降低保温板的抗拉强度、抗压强度、软化系数；憎水粉能够显著降低保温板的吸水率,但对保温板的抗拉强度、抗压强度影响不大。通过试验研究确定各组分的最佳掺量：聚苯颗粒9.5kg、水泥195kg、粉煤灰28kg、可再分散乳胶粉2.5kg、中空纤维0.85kg、羟丙基甲基纤维素2.1kg、憎水粉2.5kg。最后根据基层墙体,确定出了纤维增强复合材料保温板外墙外保温系统的基本构造,指出系统构造设计要求、施工工艺流程与施工要点,有效地保证了施工的规范性和系统性能的发挥。
[Abstract]:In recent years , with the increase of energy price and the surge of electric power demand , building energy - saving has been paid more attention . In the building envelope , the proportion of wall in heating energy consumption is the largest , accounting for 32 . 1 % - 36 . 2 % of total energy consumption . The heat insulation board of the fiber reinforced composite material is prepared from polyphenyl particles , cement , fly ash , redispersed emulsion powder , hollow fiber , hydroxypropyl methyl cellulose and hydrophobic powder as raw materials . In this paper , the influence of various factors on the main properties of insulation board is studied . The results show that the thermal conductivity of insulation board is lower than that of 32.5 grade Portland cement . As the content of fly ash increases , the tensile strength , compressive strength and thermal conductivity of the insulation board are reduced . The optimum dosage of each component was determined by experimental study : 9.5 kg of polyphenyl particles , 195 kg of cement , 28 kg of fly ash , 2.5 kg of redispersed emulsion powder , 0.85 kg of hollow fiber , 2.1 kg of hydroxypropyl methylcellulose and 2.5 kg of hydrophobic powder . Finally , according to the basic structure of the external insulation system of the insulation board of the fiber reinforced composite material , the basic structure of the external insulation system of the insulation board of the fiber reinforced composite material is determined , and the design requirements , the construction process flow and the construction key points of the system are pointed out , and the normative and system performance of the construction is effectively ensured .

【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU551

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