Safety of 3-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanehydrazide hydrochloride, Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. 293298-33-6, Name is 3-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanehydrazide hydrochloride, SMILES is O=C(NN)CCN1C(C=CC1=O)=O.[H]Cl, belongs to pyrrolines compound. In a article, author is Chen, Lin, introduce new discover of the category.
Simulation and experimental study of a new structural rubber seal for the roller-cone bit under high temperature
Seal element is an important component of roller-cone bit. In order to improve the sealing performance and service life of roller-cone bit under high temperature, a new seal structure with multi-segment arcs is designed and the structural parameters of this sealing ring are optimized by response surface method and finite element method. Firstly, the hydrogenated nitrile-butadiene rubber is used to improve the seal performance under high temperature, and the uniaxial, planar, and biaxial tensile experiments are carried out to study the constitutive model of this rubber. Then, a three-dimension transient thermo-mechanical coupling model is established. The comparison of sealing performance between the new structural seal and the traditional O-ring seal is implemented under high temperature through the proposed FEM and laboratory experiments. The results show that the new structural seal has lower contact pressure and Mises stress than the standard O-ring seal, and the service life of the former is almost twice of the later one. Additionally, a composite drill bit using the new structural seal is applied to a deep drilling. After servicing a certain time, it shows that the wearing capacity is very small. The results show that the new structure seal ring can adapt to high temperature environment and the optimization method is feasible.
Future efforts will undeniably focus on the diversification of the new catalytic transformations. These may comprise an expansion of the substrate scope from aromatic and heteroaromatic compounds to other hydrocarbons. Keep reading other articles of 293298-33-6. Safety of 3-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)propanehydrazide hydrochloride.
Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem