อิทธิพลของอิพ็อกซีเรซินที่ผสมยางธรรมชาติอิพ็อกไซด์และยางธรรมชาติอิพ็อกไซด์/ซิลิกานาโนคอมโพสิทต่อสมบัติของใบพัดอากาศยานไร้คนขับ

Abstract

The epoxidized natural rubber (ENR) was prepared via in situ epoxidation reaction to contain 50 mol% epoxide groups (ENR 50). The fraction of ENR 50 in the blends was 0, 3, 5, 7, and 10 parts per hundred of epoxy resin (phe) relative to the epoxy resin. Also, the silica nanoparticle contents of epoxy composite was tested for 0, 1, 2, 3, 4, and 5 phe. The results show that, the mechanical properties such as tensile strength, tear strength and impact strength of nanocomposite increased when ENR 50 was added at 3 phe, while hardness properties tend to be increased when nanosilica content was loaded. Hardness and tensile strength, especially at 3 phe of nanosilica exhibited highest in impact strength about 45 % higher than the original one. The mechanical properties corelated well with morphological properties analyst by scanning electron microscope (SEM). Thus, we were selected the appropriated ratio composition of nanocomposite (3 phe ENR 50 blending with 3 phe nanosilica) to infusion molding, in the process of making the blade. The result shown that, the best nanocomposite formula use in the blade building process, and give the higher properties than the epoxy original one, by increase impact strength in 31%