Tuning Extreme Anisotropic Thermal Expansion in 1D Coordination Polymers through Metal Selection and Solid Solutions

The thermal expansion behaviour of a series of 1D coordination polymers has been investigated. Variation of the metal centre allows tuning of the thermal expansion behaviour from colossal positive volumetric...

Thermal Conductivity & Thermal Expansion Behaviour of Hot Extruded Hybrid Composites of Al6061/Sic/GR

In This Proposed Work Specimens Prepared By Stir Casting Method For Different Combinations Of Reinforcement’s Sic , Gr And Al6061 As Matrix, Further Subjected To Hot Extrusion At Ratios Of 2:1,3:1 & 4:I Temperatures Of 450,500 &5500c & Machined To ASTME831 And These Specimens Were Tested For Thermal Conductivity And Co-Efficient Of Thermal Expansion, Least Of All The Above Ratios And Temperatures Were Solutionised And Aged And The Process Repeated It Was Found That At Extrusion Ratio Of 3:1 With A Combination Of Al6061/4%Sic/2%Gr Both Thermal Conductivity & Thermal Expansion Was Found To Be Improved Compared To Conventional Aluminium.

Accordion and layer-sliding motion to produce anomalous thermal expansion behaviour in 2D-coordination polymers

Solvent free (1) and solvated (2) 2D-coordination polymers have been synthesised where 1 shows the coexistence of linear NTE, PTE and ZTE owing to accordion motion and in 2, lateral sliding of the 2D layers leads to uniaxial NTE.