Polycarbonate and its blends for car body parts

Modification of Steel Surfaces with Nanometer Films of Al2O3 and TiO2 Decreases Interfacial Adhesion to Polymers: Implications for Demolding Shape-Engineered Polymer Products

“…In this proof-of-concept experiment, polycarbonate was used as it has intermediate polar and dispersive forces and is highly applied in the automotive industry, for example, in car headlight lenses. 5,6 Those types of applications require materials with high surface finishing and low surface roughness. 55 The first inspection of SEM images shows that 1.2311-G steel was highly covered by the polymer, whereas only a few remains located around the Al 2 O 3 spheres were left on the 1.2311-Al-H steel surface (Figure 8).…”

“…1.2311 steels were used to simulate the molding process by depositing a melted polymer on the respective surfaces (Figure ). In this proof-of-concept experiment, polycarbonate was used as it has intermediate polar and dispersive forces and is highly applied in the automotive industry, for example, in car headlight lenses. , Those types of applications require materials with high surface finishing and low surface roughness …”

“…One of the main problems of the injection process is the demolding stage, as small fractions of the polymers frequently remain adhered to the mold surface, producing defective polymeric parts and reducing the lifetime of the mold. − Approximately 2% of the injected parts are rejected, and solving this issue will reduce the generation of waste and increase productivity in industries such as the automotive and biomedical ones, which usually require high surface finishing. − There are different ways to optimize the demolding process, such as temperature optimization between the mold and the polymer, application of demolding forces, or modification of the steel surface by means of physical vapor deposition (PVD), plasma treatments, and chemical vapor deposition (CVD) methods. ,− As a chemical vapor deposition technique, atomic layer deposition (ALD) can also be considered as a valid alternative for the next generation of demolding optimization processes. ALD is a thermally activated gas-phase process for depositing thin films by sequentially exposing a substrate to a series of two or more gaseous precursor reactants, each of which undergoes self-limiting chemisorption surface reactions.…”

Estimation of mixed-mode I/II fracture of U-notched polycarbonate specimens using the TCD and SED methods

“…Поликарбонат -это термопластичный полимер, обладающий повышенной ударной прочностью [1], высокой прозрачностью и пластичностью. Благодаря этим характеристикам поликарбонат находит широкое применение [2] в различных отраслях промышленности, таких как автомобилестроение [3], биомедицина [4] и электроника [5]. Однако у поликарбоната есть недостатки, такие как упруго-вязкопластическое поведение [6], чувствительность к надрезам [7] и фотоокисление под действием ультрафиолетового излучения [8].…”