Air brake tubing and compositions for making the same
Air brake tubing is provided having an air brake tube body comprising at least one layer formed from a composition comprising a copolyester, polyethylene terephthalate or polybutylene terephthalate; and a thermoplastic polyurethane.
1. An air brake tubing comprising:
an air brake tube body comprising one layer formed from a composition comprising
about 40-55% by weight of copolyester;
about 40-55% by weight thermoplastic polyurethane; and
about 0-15 wt % polyamide, wherein the air brake tubing has a mono-wall, single layer construction.
2. The air brake tubing of claim 1 , wherein the composition comprises 0-10 wt % polyamide.
3. The air brake tubing of claim 1 , wherein the air brake tubing is capable of meeting the performance requirements of SAE J844, SAE J2547 and DOT FMVSS 106.
4. The air brake tubing of claim 1 , wherein the composition comprises about 45-55 wt % copolyester.
5. The air brake tubing of claim 4 , wherein the copolyester is selected from one or more thermoplastic copolyester elastomers exhibiting hardness of from 63D-74D on the Shore scale.
6. Tubing suitable for use in pneumatic or hydraulic applications, the tubing formed from a composition comprising about 40-55% by weight copolyester; and about 40-55% by weight thermoplastic polyurethane, wherein the tubing has a mono-wall, single layer construction.
7. The tubing of claim 6 , wherein the tubing is capable of meeting the performance requirements of at least one of SAE J844, SAE J2547 and DOT FMVSS 106.
8. The tubing of claim 7 , wherein the tubing is an air brake hose capable of meeting the performance requirements of SAE J844, SAE J2547 and DOT FMVSS 106.
9. The tubing of claim 6 , wherein the tubing is formed from a composition comprising about 45-55% by weight copolyester.
10. The tubing of claim 6 , wherein the copolyester is selected from one or more thermoplastic copolyester elastomers exhibiting hardness of from 63D-74D on the Shore scale.
11. The tubing of claim 6 , wherein the tubing is formed from a composition comprising about 40-50% by weight thermoplastic polyurethane.
12. The tubing of claim 6 , wherein thermoplastic polyurethane exhibits a hardness of about 60D-70D on the Shore scale.
13. The tubing of claim 6 , wherein the composition further comprises about 0-15% by weight polyamide.
14. The tubing of claim 13 , wherein the composition comprises about 0-10 % by weight polyamide.
15. The tubing of claim 13 , wherein the composition comprises about 5-10% by weight polyamide.
16. The air brake tubing of claim 1 , wherein the composition is a blend, alloy or copolymer.
17. An air brake tubing comprising:
an air brake tube body comprising one layer formed from a composition comprising
30-60 wt % by weight copolyester; and
30-60 wt % by weight thermoplastic polyurethane; and
0-15 wt % polyamide, wherein the air brake tubing has a mono-wall, single layer construction.
18. The air brake tubing of claim 17 , wherein the composition comprises 0-10 wt % polyamide.
19. The air brake tubing of claim 18 , wherein the air brake tubing is capable of meeting the performance requirements of SAE J844, SAE J2547 and DOT FMVSS 106.
20. The air brake tubing of claim 1 , wherein the copolyester is a thermoplastic copolyester elastomer.
21. An air brake tubing comprising:
an air brake tube body comprising a layer formed from a composition comprising
about 40-55% by weight of a thermoplastic copolyester elastomer;
about 40-55% by weight thermoplastic polyurethane; and
about 0-15 wt % polyamide, wherein the air brake tubing is capable of meeting the performance requirements of SAE J844, SAE J2547 and DOT FMVSS 106, and wherein the air brake tubing has a mono-wall, single layer construction.
22. The air brake tubing of claim 21 , wherein the thermoplastic copolyester elastomer is selected from a thermoplastic copolyester elastomer having a hardness selected from 63D to 74D on the Shore scale.
23. The air brake tubing of claim 21 , wherein the thermoplastic polyurethane is a polyether-based thermoplastic polyurethane with a hardness selected from 60D to 70D on the Shore scale.
24. The air brake tubing of claim 21 , wherein the outer diameter (O.D.) of the air brake tubing is selected from the group consisting of ⅛ inch, 5/32 inch, 3/16 inch, ¼ inch, 5/16 inch, ⅜ inch, ½ inch, ⅝ inch and ¾ inch.