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

Abstract

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.

Development of a novel hyperbranched unsaturated polyester resin: Synthesis, characterization, and potential applications in car body putty

“…Its ability to resist bending and flexing without fracturing or deforming makes it a durable and reliable material for various applications. 37 40 53 69 Other work 38 45 89 Specimen tested cured as follows: 24 hrs @20 °C, 5 hrs @ 80 °C, 3 hrs @ 120 °C Present UPR demonstrated better sanding performance (Table 2), exhibiting a notably shorter time for completion compared to other similar products. This finding underscores the better workability and sanding characteristics of present UPR, making it an ideal choice for manufacturers of car body putty.…”