Study on the Mechanical Characteristics, Heat Resistance, and Corrosion Resistance of Unsaturated Polyester Resin Composite

• Published in: Buildings (Basel) Vol. 13; no. 7; p. 1700
• Main Authors: Qin, Changpei, Jin, Qikai, Zhao, Junxian, Wang, Yixuan, Jiang, Chaohua
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2023
• Subjects: chopped glass fiber; Composite materials; Corrosion; Corrosion and anti-corrosives; Corrosion resistance; Corrosion tests; Deformation; Fibers; Flexural strength; Gamma rays; Glass fibers; Graphene; Heat conductivity; Heat resistance; Impact strength; Interfaces; Mechanical properties; Nanoparticles; Polyester resins; Polyesters; Polymers; Saline solutions; Shear strength; Temperature; Tensile strength; Thermal resistance; Thermal stability; TiO2 nanoparticles; Titanium; Titanium dioxide; unsaturated polyester resin; China
• ISSN: 2075-5309; 2075-5309
• DOI: 10.3390/buildings13071700

In this study, the researchers aimed to broaden the applications of unsaturated polyester resin (UPR) composites in the building field by incorporating surface-modified titanium dioxide (TiO2) nanoparticles and reinforced chopped glass fibers within the UPR matrix. Specifically, the composites containing 4 wt.% TiO2 nanoparticles and 30 wt.% chopped glass fiber exhibited remarkable properties of 46.1 kJ/m2 in impact strength, 90.1 MPa in flexural strength, 78.8 MPa in tensile strength, and 121.5 °C in heat deflection temperature, which improve 207.5%, 80.3%, 62.5%, and 73.6%, respectively, when compared with the blank sample. Furthermore, the results of the corrosion resistance test showed that the composites performed poorly against polar organic and alkaline solutions, presented good corrosion resistance against acidic media, and behaved relatively stable in the salt solution.