The Effect of Silanes Treatments on Thermal and Mechanical Properties of Nettle Fibre/Bio Epoxy Composites

ABSTRACT

Obtaining suitable reinforcement of the polymer matrix depends largely on the appropriate connection at the fiber/polymer interface. Therefore, the main aim of the research was to assess the impact of silanization treatment of Himalayan nettle fibers on the properties of bio epoxy composites. Two types of silanes with different functional groups were used: 3-chloropropylmethyldimethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane at concentrations of 1 and 2%. The effectiveness of the fiber silanization process was confirmed using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). It was found that treatment with silane with amine groups provided more effective adhesion between the fiber and the epoxy matrix than treatment with silane with chlorine groups. In addition, the thermal stability, impact strength, bending strength, impact resistance, density and water absorption of the composites were determined. It should be emphasized that silane treatment had a positive effect on the impact strength, impact resistance and flexural modulus of the tested layered composites.

摘要

聚合物基体的适当增强在很大程度上取决于纤维/聚合物界面处的适当连接. 因此，本研究的主要目的是评估喜马拉雅荨麻纤维的硅烷化处理对生物环氧复合材料性能的影响. 使用两种具有不同官能团的硅烷: 浓度为1%和2%的3-氯丙基甲基二甲氧基硅烷和N-（2-氨基乙基）-3-氨基丙基三甲氧基硅烷. 使用傅立叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）证实了纤维硅烷化过程的有效性. 研究发现，与用具有氯基团的硅烷处理相比，用具有胺基的硅烷处理在纤维和环氧树脂基体之间提供了更有效的粘合. 此外，还测定了复合材料的热稳定性、冲击强度、弯曲强度、冲击强度和密度以及吸水率. 需要强调的是，硅烷处理对测试的层状复合材料的冲击强度、抗冲击性和弯曲模量有积极影响.

KEYWORDS:

• Nettle fiber
• silane treatments
• epoxy composites
• mechanical properties

关键词:

• 荨麻纤维
• 硅烷处理
• 环氧树脂复合材料
• 机械性能

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research was funded by the Ministry of Science and Higher Education in Poland, Grant No. 0613/SBAD/4820.