针叶木化学浆/玄武岩鳞片复合纸基材料的制备及其吸音隔热性能

Preparation of Softwood Chemical Pulp/Basalt Scales Composite Paper-based Materials and Their Sound Absorption and Thermal Insulation Properties

关键词:  玄武岩鳞片  吸音  隔热  热稳定性

Key Words:basalt scale  sound-absorption  thermal insulation  thermal stability

摘要:以玄武岩鳞片和针叶木化学浆为原料，采用造纸湿法成形技术制备轻质、环保的吸音隔热纸基材料。研究了玄武岩鳞片含量对针叶木化学浆/玄武岩鳞片复合纸基材料保温隔热与吸声性能的影响。结果表明，当玄武岩鳞片含量30%时，复合纸基材料在1200~1800 Hz及2500~3400 Hz范围内，吸音性能得到改善，吸音系数最高可达0.86。随着玄武岩鳞片含量的增加，复合纸基材料导热系数降低，热稳定性得到改善。当玄武岩鳞片含量为60%时，复合纸基导热系数为0.041 W/(m·K)，具有良好的保温隔热性能。

Abstract:Light weighted and environmentally-friendly sound-absorption and thermal-insulation paper-based materials were prepared with basalt scales and softwood chemical pulp as raw materials via wet forming process of papermaking. Effects of basalt scales content on the thermal insulation and sound absorption properties of the softwood chemical pulp/basalt scales composite paper-based materials was studied. The results showed that the sound absorption of the composite paper-based materials were effectively improved in the range of 1200~1800 Hz and 2500 ~ 3400 Hz when basalt scale content was 30%. The maximum sound absorption coefficient could reach 0.86. In addition， the thermal conductivity of the composite paper-based materials was decreased with the increase of basalt scales content so that the thermal stability of the composites was increased. When the basalt scale content was 60%， the composite paper-based materials exhibited excellent thermal insulation performance with the corresponding thermal conductivity of 0.041 W/（m·K）.