Improving the adhesion and properties in the material extrusion of polypropylene by blending with a polyolefin elastomer was written by Ho, Quang Binh;Kontopoulou, Marianna. And the article was included in Additive Manufacturing in 2022.SDS of cas: 6683-19-8 This article mentions the following:
We examine the effect of the thermorheol. properties of polypropylene (PP) on its material extrusion characteristics using a 3D printer. Rheol. characterization showed that PP with higher viscosity exhibited low extrusion rates during printing and suffered significant pressure drop. All PP grades tested suffered from warpage in the built structures, and debonding of individual strands under tensile deformation. Blending 20-40 wt% of an elastomeric ethylene-octene copolymer (EOC) with PP improved the flow properties and the interfacial fusion. Investigation into the morphol. and thermal properties of the blends showed that owing to its amorphous structure and low m.p., the EOC dispersed phase facilitated the material extrusion process, reduced warpage, and promoted fusion between the printed strands, improving the mech. properties. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8SDS of cas: 6683-19-8).
2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.SDS of cas: 6683-19-8
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics