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通过人工加速光老化与自然气候暴露老化试验,运用拉伸实验手段对老化前后内镶式滴灌带的力学性能进行表征,并用红外光谱对其结构变化进行分析,研究抗老化母粒对滴灌带耐老化性能的影响。结果表明,人工老化12d和自然暴露老化120d与未老化试样相比,断裂伸长率保持率添加自制抗老化母粒的分别为84.7%、83.2%,未添加抗老化母粒的分别为59.8%、58.2%;未添加抗老化母粒的试样在1723cm-1处生成的羰基峰明显较强,配方中添加自制抗老化母粒起到了抗紫外的作用。
The mechanical properties of the inlaid drip irrigation tape before and after aging were characterized by artificial accelerated photo-aging and natural weather exposure aging test. The mechanical properties of the inner drip irrigation tape before and after aging were characterized, and their structural changes were analyzed by infrared spectroscopy. Effect of aging properties. The results showed that the retention of elongation at break was 84.7% and 83.2%, respectively, compared with the unaged samples after artificial aging for 12 days and exposed to natural exposure for 120 days, respectively, and those without adding anti-aging masterbatch were 59.8 % And 58.2%, respectively. The carbonyl peak at 1723cm-1 of the sample without anti-aging masterbatch was obviously stronger. The addition of self-made anti-aging masterbatch to the formulation played the role of anti-ultraviolet.