Research speed reading in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 56-85-9, Name is H-Gln-OH, molecular formula is C5H10N2O3. In an article, author is Vasconcelos, Beatriz,once mentioned of 56-85-9, Electric Literature of 56-85-9.
Electroless Deposition of Ni-P Coatings on HNBR for Low Friction Rubber Seals
This paper reports a simple and cost-effective procedure to coat hydrogenated nitrile butadiene rubber (HNBR) with a well-adherent Ni-P film by using the electroless plating method. A HNBR surface functionalization process was first optimized, creating an interpenetrating network with polyvinylpyrrolidone (PVP). Silver nanoparticles were deposited on PVP and acted as catalysts for the Ni-P film deposition, eliminating the expensive tin-palladium sensitization/activation step. A homogeneous, low phosphorous Ni-P film was obtained after 60-120 min of plating in an alkaline bath, with an average thickness of 3 to 10 mu m, respectively. The PVP internetwork played an important role on the strong adhesion of the film, 1.0 +/- 0.5 MPa. The tribological behavior of Ni-P-plated HNBR samples was studied for 1, 5 and 10 N applied loads under dry sliding on a pin-on-disc configuration and the coefficient of friction (CoF) was reduced by similar to 30-49%, compared to uncoated HNBR (loads 1-5N). Based on these results, Ni-P-coated rubber can be regarded as a novel solution for enhancement of the tribological behavior of dynamic seals; it can be regarded as a means to avoid machinery failure. This method offers an alternative to the diamond-like carbon (DLC) coatings.
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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem