文献类型：期刊文献

中文题名：纤维增强建筑复合保温发泡材料的制备及性能研究

英文题名：Preparation and properties of fiber reinforced building composite thermal insulation foaming material

作者：白翔宇[1];蔡韩英[2];张利伟[1]

第一作者：白翔宇

机构：[1]新乡学院土木工程与建筑学院,河南新乡453003;[2]新乡职业技术学院建筑工程系,河南新乡453006

第一机构：新乡学院土木工程与建筑学院

年份：2021

卷号：52

期号：10

起止页码：10166-10170

中文期刊名：功能材料

外文期刊名：Journal of Functional Materials

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家自然科学基金资助项目(41877251);河南省建设行业科技项目(豫建科协评字[2021]第002号)。

语种：中文

中文关键词：短切纤维;酚醛树脂;保温发泡材料;力学性能;导热系数

外文关键词：chopped fiber;phenolic resin;thermal insulation foaming material;mechanical properties;thermal conductivity

摘要：保温材料的导热系数一般都不大于0.2 W/(m·K),因其具有良好的保温性能而被广泛用于建筑内外墙、屋顶和保温砂浆建筑领域。以酚醛树脂为基体,以短切玻璃纤维为改性材料,制备了不同纤维含量(0,3%,6%和9%)(质量分数)的纤维增强复合保温发泡材料。采用电子万能试验机、SEM和导热系数测试仪对复合保温发泡材料的力学性能、微观形貌和导热性能等进行了分析,结果表明,随着纤维含量的增加,纤维增强复合保温发泡材料的抗压强度和拉伸强度均呈现出先升高后降低的趋势,当纤维的含量为6%(质量分数)时,复合保温发泡材料的抗压强度和拉伸强度都达到了最大值,分别为0.241和0.115 MPa;随着纤维含量的增加,复合保温发泡材料的吸水率呈现出先降低后升高的趋势,当纤维的含量为6%(质量分数)时,吸水率达到最小值27.9%;随着纤维含量的增加,复合保温发泡材料的易脆率逐渐降低,韧性逐渐增强,当纤维的含量为9%(质量分数)时,复合保温发泡材料的易脆率最低为10.2%;当纤维的含量为6%(质量分数)时,复合保温发泡材料的气孔尺寸最小约300μm,当纤维的含量增加到9%(质量分数)时,气孔数量有增多的趋势,且尺寸分布不均匀,有较大气孔出现;随着纤维含量的增加,复合保温发泡材料的导热系数呈现出先降低后升高的趋势,当纤维的含量为6%(质量分数)时,复合保温发泡材料的导热系数达到了最低值为0.033 W/(m·K)。总体分析可知,当纤维的含量为6%(质量分数)时,纤维增强复合保温发泡材料的综合性能最佳。
The thermal conductivity of thermal insulation materials is generally not greater than 0.2 W/(m·K).Because of its good thermal insulation performance,it is widely used in the field of building internal and external walls,roofs and thermal insulation mortar.Fiber reinforced composite thermal insulation foams with different fiber contents(0,3wt%,6wt%and 9wt%)were prepared with phenolic resin as matrix and chopped glass fiber as modified material.The mechanical properties,micro morphology and thermal conductivity of composite thermal insulation foaming materials were analyzed by electronic universal testing machine,SEM and thermal conductivity tester.The results showed that with the increased of fiber content,the compressive strength and tensile strength of fiber-reinforced composite thermal insulation foaming materials increased first and then decreased.When the content of fiber was 6wt%,the compressive strength and tensile strength of composite thermal insulation foaming material reached the maximum,which were 0.241 and 0.115 MPa respectively.With the increased of fiber content,the water absorption of composite thermal insulation foaming materials decreased first and then increased,when the content of fiber was 6wt%,the water absorption reached the minimum value of 27.9%.With the increased of fiber content,the brittleness of composite thermal insulation foaming material gradually decreased and the toughness gradually increased,when the content of fiber was 9wt%,the embrittlement rate of composite thermal insulation foaming material was the lowest,which was 10.2%.When the content of fiber was 6wt%,the minimum pore size of composite thermal insulation foaming material was about 300μm,when the fiber content increased to 9wt%,the number of pores tended to increased,and the size distribution was uneven,with large pores.With the increased of fiber content,the thermal conductivity of composite thermal insulation foams decreased first and then increased,when the content of fiber was 6wt%,the thermal conductivity of composite thermal insulation foaming material reached the lowest value of 0.033 W/(m·K).The overall analysis showed that when the content of fiber was 6wt%,the comprehensive performance of fiber-reinforced composite thermal insulation foaming material was the best.