摘要
为了制备具有隔音保温功能的建筑材料,通过冷热压机制备中空二氧化硅(SiO_(2))改性的高密度聚乙烯(HDPE)复合材料,探究SiO_(2)的含量对HDPE复合材料的热稳定性、力学性能、保温性能和隔音性能的影响。结果表明:SiO_(2)的加入可以提高HDPE材料的热稳定性。SiO_(2)可以提高HDPE的阻尼性能。相比HDPE,HDPE/SiO_(2)(10%)复合材料的拉伸强度为28.6 MPa,弹性模量为869 MPa,分别提高33.0%和27.8%。HDPE/SiO_(2)(10%)共振频率向高频移动,隔音指数为37 dB,与HDPE相比提高34.5%。HDPE/SiO_(2)(10%)导热系数降至37.5 mW/(m·K),保温性能明显提升。
In order to prepare a building material with sound insulation function, hollow silica(SiO_(2)) modified high density polyethylene(HDPE) composites were prepared by cold and hot press. The effects of SiO_(2)content on the thermal stability,mechanical properties, thermal insulation and sound insulation of HDPE composites were investigated. The results show that the addition of SiO_(2)can improve the thermal stability of HDPE materials. SiO_(2)can improve the damping properties of HDPE. Compared with unmodified HDPE, the tensile strength of HDPE/SiO_(2)(10%) composite is 28.6 MPa, and the elastic modulus is 869 MPa, which are increased by 33.0% and 27.8%, respectively. The resonance frequency of HDPE/SiO_(2)(10%)moves to high frequency, and the sound insulation index is increased by 34.5% at 37 d B. The total thermal conductivity of HDPE/SiO_(2)(10%) is decreased to 37.5 m W/(m·K), and the thermal insulation performance is significantly improved.
作者
胡娅春
HU Ya-chun(City University of Zhengzhou,Zhengzhou 452370,China)
出处
《塑料科技》
CAS
北大核心
2022年第3期29-32,共4页
Plastics Science and Technology
关键词
高密度聚乙烯
中空二氧化硅
热稳定性
隔音性能
保温性能
High-density polyethylene
Hollow silica
Thermal stability
Sound insulation
Thermal insulation