How does cross linking affect a polymers macroscopic behavior

Posted on 09.06.2018 by Temeka
Then, the effects of deformation mode and crystallinity on deform. A laminar composite model and FE-based homogenization method were used to relate the mechanical behaviors in micro- to mesoscopic and meso- to macroscopic scales of the material. Polyethylene consists of a long chain of units, each made of one carbon atom with two associated hydrogen atoms.

Separator tapes are not required to prevent thin wall insulations from being forced into the conductor strand surface.

It is perfectly possible to have a cross linked polymer that is soft and flexible - a good example would be rubber, which is cross linked via vulcanisation with sulphur for use in tyres. Irradiation offers the insulation compounder design freedom. Material's parameters used in the constitutive equations for microstructure of SCP were defined by fitting the calculated stress-strain relation into the experimental data. Firstly, the presense of cross linking does NOT automatically stiffen a polymer.
Figure I illustrates a portion of a polyethylene molecule. On the other hand, you can find polymers such as polycarbonates that are not cross linked but which are extremely stiff. I understand that cross linking increases the storage modulus, my question is how.