百菌清对麦秸秆/PP复合材料耐腐蚀性能的影响

Effects of Chlorothalonil on Fungus Resistance of Wheat Straw/PP Composites

研究了百菌清作为抗菌剂对麦秸秆/PP复合材料耐腐蚀性能的影响,制备5种百菌清含量的麦秸秆/PP复合材料,参照ASTMG21-96对复合材料进行腐蚀实验,并测试腐蚀后麦秸秆/PP复合材料的力学性能、吸水性能、色差以及表面微观结构。结果表明:百菌清添加量为1.25%时,腐蚀后麦秸秆/PP复合材料的综合性能较好,与不添加抗菌剂的复合材料相比,弯曲强度、弯曲弹性模量、拉伸强度、冲击强度分别提高了13.71%,54.91%,10.46%,47.53%,吸水192h的吸水率降低了23.69%,腐蚀前后色差值则减小了11.56。

The effects of chlorothalonil as a fungicide on fungus resistance of wheat straw/PP composites were studied in this paper. Wheat straw/PP composites prepared with 5 different contents of chlorothalonil, were used in the experiment of fungus corrosion of composites with ASTMG21 -96 as the standard. Through the test, the me- chanical property, water absorption, chromatic aberration, microstructure surface of wheat straw/PP composites were observed after corrosion. The results showed that compared with wheat straw/PP composites with no addition of chlorothalonil, if the content of chlorothalonil was 1.25 %, mechanical property of composites was better after fungus corrosion, the bending strength increased by 13.71%, the bending modulus of elasticity increased by 54.91% , the tensile strength increased by 10.46% and the impact strength increased by 47.53% ,while water absorption ability and chromatic aberration were smallest, the bibulous rate reduced 23.69%, the color difference value reduced 11.56.