TPU
Home /

TPU

What is Expanded thermoplastic polyurethane (E-TPU)
November 11 , 2022

Expanded thermoplastic polyurethane (E-TPU)-is produced by the expansion of air in rubber material called TPU. TPU beads are pressure heated at 150℃ the temperature of softening point of TPU. CO2 blowing agent is impregnated into Soft Segment which results in expansion of TPU. In this process, the original particles can expand to 6-9 times bigger, and each of TPU (thermoplastic polyurethane material) particle expands like popcorn. Thus E-TPU turn to an oval and non-cross linked foamed particle.

E-TPU are ultralight and Eco-friendly material and offers a perfect combination of soft texture ,good abrasion resistance, bending resistance ,great elasticity and anti-yellowing. E-TPU is widely used for applications requiring high durability because of its excellent mechanical properties such as track saddles, tyres, padel tennis racquets, Sole inserts, safety shoes, cushioning mats, knee and joint protection machine and apring elements, drivers, vibration damping and so on.

Koslen can provide expanded beads with different size and hardness according to the requirements. Koslen E-TPUKS-7816 series, KS-8515BNC, KS-9099BK are developed to meet the different requirements of customers.


Properties

Test Method

unit

KS-7816

KS-8515BNC

KS-9099BK

Hardness

ASTM D2240

Shore C

25-40

15-25

25-40

Specific gravity

ASTM D792

-

0.130-0.150

0.130-0.145

0.145-0.175

Abrasion

DIN 53516

mm3

50-60

45-55

45-55

Rebound rate

-

%

≥58

≥63

≥58

Compression set

ASTM D395

%

≤18

≤20

≤20

Tensile strength

ASTM D412

kgf/cm2

≥11

≥10

≥10

Elongation at break

ASTM D412

%

≥130

≥135

≥130

UV

UVA*50℃*24h

-

3.5-4.0

3.0-3.5

-



Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

about

contact