The objective of this research was to study the tensile properties of fiberglass mixed with latex and durian peel fiber by used concentrated latex, resin, surfactant, hardener, catalyst equal were 10: 100: 10: 0.2: 0.2 Respectively. In addition, five main ratios of fiber glass and durian peel fiber were mixed and formed to test the tensile properties: 600:0, 550:50, 500:100, 450:150, and 400:200 grams. The results showed that the fiberglass with a glass fiber and durian peel fiber ratio of 550:50 had the maximum tensile strength. Young’s modulus was 6.54 MPa and the average tensile strength was 6.54 MPa. It was the highest, with a ratio of 450:150 average 968.82 MPa. As shown, the fiber from the durian peel resulted in an increase in the modulus of elasticity. It’s a natural material that’s both soft and durable. It can be applied as a cost-effective substitute in fiberglass composites.
