TPU is a high molecular weight polymer that is widely used due to its abrasion resistance and flexibility at low temperatures. It exists in various types including polyester TPU, polyether TPU, and polycaprolactone TPU. TPU can be processed through injection molding, extrusion molding, and blowing/compression molding. It has properties like hardness and chemical resistance that make it suitable for a variety of applications. Research is being conducted to improve its properties, such as increasing its storage modulus and toughness through the addition of silver nanowires or graphene nanoplatelets.

2. TPU: Is a class of polymer of high molechuler weight .it is abundtly used due
to its physical properties like abriosn resisitant ,flexibilty at low temperature .It
is transparent and light material .its monomer and chemixal reaction are given
below

3. TPU
Types of TPU:
 polyestester TPU
 polyether TPU
 polycaprolactone TPU
Methods of processing :
 Injection moulding
 Extrusion moulding
 Blowing/compression moulding

4. Properties of TPU:

5. Application of TPU:

6. property ester TPU ether TPU
Hardness 85 85
Tg -40 -38
chemical
resistant
Good-v.good Good
Limitation:
 It is intsable in certain
enviroment.e.g U.V
 we use chemical to
make it stable.
 it is expensive polymer
 it release dangerous
fumes.
 hygroscopic polymer
 it commercially
available in solid form.

7. Comparision of TPU with other polymer:

8. Research articles:
Silver nanowire/thermoplastic polyurethane elastomer
nanocomposite:
 A film of polyvinlepyrrolidine PVP and AgNW /TPU was manufacrtued .
 By increasing the the load of AgNW ,the transparency of TPU
decreased,but crystalization temperature increased.
by addition of AgNW the storage moduli of
nanocomosite increase at low temerature -50
the toughness of nanocomposite increase dramaticallly
with .03%-.05% v of AgNW .

9. Storage modulus and toughness of nanocomposite:

10. research article :
electrical enhancement in thermoplastic
polyurethane-Garaphene nanoplatelet:
 under some certain condition the streching of TPU-GnPs increase
electrical properties .
 Number of garaphene,purity and degree of dispersion play a important
role in streching of polymer.
 By stretch release cylce the mechanical properties of nanocomposite are
effected.
 electrical properties of nanocomposite is increased due to rearrangment
of GnPs during mobilty of polymer chain.
 the stability of polymer is decreased under high elongation.
 the conducitvity increase due to presence of GnP flakes inside of TPU.

11. Garaphene effect on naocomposite:

12. Conclusion: The TPU due its properties are bundently use in all our the
world .It is flexible at low temerature and there are other properties that
differenitiate it from other polymer. like abrasion resistant and long term
temperature aging.
Reference:
1. “Material design volume 56,april 2014 ,pages 398-404”
2. “G. Chen , H. Wang , and W. Zhao , Polym. Adv. Technol.
19(8), 1113–1117 (2008). https://doi.org/10.1002/pat.1093,
Crossref, CAS”