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以竹粉、竹浆造纸白泥和聚氯乙烯为原料,采用铝酸酯偶联剂对竹粉和竹浆造纸白泥进行改性处理,通过热压成型技术制备竹浆造纸白泥/聚氯乙烯复合材料,研究竹粉含量对复合材料密度、力学性能、尺寸稳定性和阻燃性能的影响,并通过XRD、扫描电镜和红外光谱对竹浆造纸白泥进行表征。结果表明:偶联剂与竹浆造纸白泥产生了化学作用;竹粉含量在一定范围内时,对复合材料的力学性能具有一定的增强效果,但其尺寸稳定性能和阻燃性能随竹粉含量的增加而下降;当竹粉含量为10%时,复合材料的密度为1.03 g·cm~(-3),拉伸强度为4.84 MPa,拉伸断裂伸长率为2.84%,弯曲强度11.83 MPa,弯曲模量为8 883.33 MPa,24 h TS为1.65%,24 h WA为5.16%,氧指数为38.6%,其综合性能较优,其中氧指数达到国家建筑材料阻燃等级B1级的要求。
Using bamboo powder and white pulp of bamboo pulp and polyvinyl chloride as raw materials, the white mud of bamboo powder and bamboo pulp is modified by aluminate coupling agent, and white mud / poly The effects of bamboo powder content on the density, mechanical properties, dimensional stability and flame retardancy of the composites were investigated. The paper was characterized by XRD, SEM and FTIR. The results showed that the coupling agent and the white mud of bamboo pulp had a chemical effect. When the bamboo powder content was within a certain range, the mechanical properties of the composite material were enhanced. However, the dimensional stability and flame retardancy of the bamboo powder The content of bamboo powder is 10%, the density of composite is 1.03 g · cm -3, the tensile strength is 4.84 MPa, the tensile elongation at break is 2.84%, the flexural strength is 11.83 MPa, the flexural modulus is 8 883.33 MPa, the 24 h TS is 1.65%, the 24 h WA is 5.16% and the oxygen index is 38.6%, and its comprehensive performance is better. The oxygen index has reached the level B1 of the national building materials flame retardant requirements .