摘要
为了有效缓解废弃塑料和木材所造成的环境污染和资源浪费现象,室内以杨木粉和聚氯乙烯树脂(PVC)为主要原料,结合环保型添加剂竹炭粉和壳聚糖,以及复合稳定剂FWJ-1和乙酸酐等处理剂,制备了一种适合园林景观用的环保型木塑复合材料,并对其综合性能进行了评价。实验结果表明:制备的环保型木塑复合材料具有良好的力学性能、热学性能、疏水性能和耐久性能。当环保型添加剂竹炭粉和壳聚糖的比例为1∶1时,木塑复合材料的综合性能达到最佳,试样的拉伸强度、弯曲强度、弯曲模量和冲击强度分别可达到35.6 MPa、58.3 MPa、4 650 MPa和6.2 k J/m^(2),试样开始热分解的初始温度可达到300℃,试样24 h吸水率仅为0.73%,试样经过80 d老化后的硬度降低率仅12.0%。研究结果认为添加竹炭粉和壳聚糖后的环保型木塑复合材料综合性能优良,能够满足园林景观设计与建造的需求。
In order to effectively alleviate the environmental pollution and resource waste caused by waste plastics and wood,a kind of environ-mentally friendly wood plastic composite(WPC)material suitable for garden landscape is prepared indoor with poplar powder and polyvinyl chloride resin(PVC)as main raw materials,combined with environmentally friendly additives bamboo charcoal powder and chitosan,as well as composite stabilizer FWJ-1 and acetic anhydride,and its comprehensive performances are evaluated.The experimental results show that the environmentally friendly WPC has good mechanical properties,thermal properties,hydrophobic properties and durability.When the ratio of bamboo charcoal powder to chitosan is 1:1,the comprehensive properties of wood plastic composite materials reach the best.The tensile strength,bending strength,bending mod-ulus and impact strength of the samples can reach 35.6 MPa,58.3 MPa,4650 MPa and 6.2 kJ/m^(2) respectively.The initial temperature of thermal decomposition of the samples can reach 300 C,the water absorption rate of samples is only 0.73%in 24 h,and the hardness reduction rate of the samples after aging for 80 d is only 12.0%.The results show that the environmentally friendly wood plastic composite with bamboo charcoal powder and chitosan has excellent comprehensive properties and can meet the needs of landscape design and construction.
作者
牟琳
MU Lin(School of Civil Engineering,Jiaying College,Meizhou 514015,China)
出处
《化学与粘合》
CAS
2023年第3期230-233,252,共5页
Chemistry and Adhesion
基金
广东省青年创新人才类基金项目(编号:2018KQNCX238)。
关键词
木塑复合材料
环保
力学性能
热学性能
耐久性能
wood plastic composite material
environmentally friendly
mechanical properties
thermal properties
durability
