Mechanical Evaluation of Vegetal Fibers Impregnated in Vacuum in the Cultivation of Pea (Pisum sativum L.)

ABSTRACT

The kinetics of loss of mechanical properties in fique and cotton fibers impregnated in vacuum were evaluated as substitution alternative to the polypropylene fiber in the vertical support of the pea crop. The results were compared with non-impregnated fique fibers, non-impregnated cotton and polypropylene. The impregnation of vegetable fibers was carried out at 0.2 bar at 15°C for 2 min under vacuum. The fibers studied were implemented in culture, evaluating weekly their mechanical properties for 13 weeks. The impregnated fique presented a lower mechanical loss rate compared to the fique without impregnation in tensile strength, total elongation at maximum force and Young’s modulus. The impregnated cotton had a lower mechanical loss rate compared to the non-impregnated cotton in Young’s modulus. The speeds of mechanical loss in the three properties evaluated in polypropylene are comparable with fique and impregnated cotton.

摘要

对真空浸渍的纤维和棉纤维的力学性能损失动力学进行了评估,作为豌豆作物垂直支架中聚丙烯纤维的替代物. 结果与未浸渍纤维、未浸渍棉和聚丙烯进行了比较. 在0.2巴、15°C、真空条件下对植物纤维进行浸渍2分钟. 研究的纤维在培养中进行,每周评估13周的力学性能. 与未浸渍的fique相比,浸渍fique在拉伸强度、最大力下的总伸长率和杨氏模量方面表现出较低的机械损失率. 在杨氏模量方面,浸渍棉的机械损失率低于未浸渍棉. 在聚丙烯中评估的三种性能的机械损失速度与fique和浸渍棉相当.

KEYWORDS:

• vegetal fibers
• vacuum impregnation
• mathematical model
• mechanical properties
• tutored