KH-Z Series: Extrusion or Injection Molding
TPEE is a block copolymer composed of polyester hard segments and polyether soft segments. The amorphous regions formed by the polyether soft segments and the non-crystalline polyester, together with the partially crystalline polyester hard segments, act as physical crosslinking points. TPEE combines the elasticity of rubber with the strength of engineering plastics: its soft segments impart elasticity, giving it rubber-like properties, while its hard segments provide processability, endowing it with plastic-like characteristics. Compared to conventional rubbers, TPEE offers superior processability and a longer service life; compared to engineering plastics, it maintains high strength while exhibiting improved flexibility and enhanced dynamic mechanical performance.
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General‑Purpose Grade—TPEE Performance Data Sheet and Application Examples
| (1) KH-Z Series (suitable for extrusion/injection molding) | |||||||||||
| TPEE Model number |
Shaw Brothers Hardness D |
Stretching Intensity MPa |
Fracture Elongation % |
Melt Index (2.16kg) g/10min |
Specific gravity g/m 3 |
Melting point °C |
Bend Modulus Mpa |
Vika Soft Transformation temperature °C |
Brittleness Temperature °C |
Volumetric electric field Resistivity Ohm*cm |
Surface charge Resistivity Ohm |
| KH-Z174 | 74 | 49 | 470 | 16(240℃) | 1.25 | 222 | 800 | 207 | ≤-25 | 3.0E+14 | 8.0E+15 |
| KH-Z172 | 72 | 48 | 540 | 16(240℃) | 1.24 | 218 | 550 | 205 | ≤-35 | 1.0E+14 | 7.0E+15 |
| KH-Z163 | 63 | 45 | 620 | 17(230℃) | 1.21 | 212 | 320 | 196 | ≤-50 | 8.0E+13 | 4.0E+15 |
| KH-Z263 | 63 | 43 | 620 | 25(230℃) | 1.21 | 212 | 320 | 196 | ≤-50 | 8.0E+13 | 4.0E+15 |
| KH-Z155 | 55 | 37 | 680 | 17(220℃) | 1.18 | 203 | 220 | 182 | ≤-60 | 4.0E+13 | 2.0E+15 |
| KH-Z255 | 55 | 35 | 670 | 25(220℃) | 1.18 | 203 | 220 | 182 | ≤-60 | 4.0E+13 | 2.0E+15 |
| KH-Z150 | 50 | 25 | 850 | 17(220℃) | 1.15 | 201 | 160 | 166 | ≤-62 | 1.0E+13 | 8.0E+14 |
| KH-Z145 | 45 | 25 | 850 | 17(220℃) | 1.15 | 201 | 100 | 156 | ≤-65 | 1.0E+13 | 5.0E+14 |
| KH-Z140 | 40 | 22 | 900 | 17(220℃) | 1.12 | 198 | 80 | 141 | ≤-70 | 6.0E+12 | 3.0E+14 |
| KH-Z240 | 40 | 21 | 850 | 25(220℃) | 1.12 | 197 | 80 | 140 | ≤-70 | 6.0E+12 | 3.0E+14 |
| KH-Z135 | 35 | 17 | 930 | 16(220℃) | 1.10 | 190 | 55 | 134 | ≤-70 | 2.0E+12 | 2.0E+14 |
| KH-Z235 | 35 | 17 | 900 | 25(220℃) | 1.10 | 189 | 55 | 133 | ≤-70 | 2.0E+12 | 2.0E+14 |
| KH-Z130 | 30 | 16 | 980 | 16(220℃) | 1.07 | 182 | 40 | 125 | ≤-75 | 2.0E+12 | 2.0E+14 |
| KH-Z128 | 28 | 14 | 1020 | 16(220℃) | 1.05 | 172 | 35 | 100 | ≤-80 | 1.5E+12 | 2.0E+14 |
| KH-Z125 | 25 | 12 | 1150 | 16(220℃) | 1.03 | 165 | 30 | 85 | ≤-85 | 1.0E+12 | 2.0E+14 |
| KH-Z119 | 19 | 8.5 | 1185 | 18(220℃) | 1.01 | 128 | 25 | 80 | ≤-85 | 1.0E+12 | 2.0E+14 |
Examples of applications for the KH-Z series
This series exhibits excellent mechanical properties, outstanding creep resistance, superior elasticity and rebound resilience, and exceptional resistance to acids, alkalis, and chemicals, as well as to water and oils. With its well-rounded performance across all key parameters, it also boasts rapid crystallization and excellent flow characteristics, making it widely suitable for processes such as injection molding, extrusion, blow film production, cast film manufacturing, fiber spinning, and polymer modification.
Product Overview
TPEE is a block copolymer composed of polyester hard segments and polyether soft segments. The amorphous regions formed by the polyether soft segments and the non-crystalline polyester, together with the partially crystalline polyester hard segments, act as physical crosslinking points. TPEE combines the elasticity of rubber with the strength of engineering plastics: its soft segments impart elasticity, giving it rubber-like properties, while its hard segments provide processability, endowing it with plastic-like characteristics. Compared to conventional rubbers, TPEE offers superior processability and a longer service life; compared to engineering plastics, it maintains high strength while exhibiting improved flexibility and enhanced dynamic mechanical performance.
TPEE is a highly polar polymer with an water absorption rate of approximately 0.6%. Prior to processing, it is recommended to dry the material: use forced-air drying at 95°C for 2.5 hours.
Molecular structural formula of TPEE
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| Polyester hard segment | Polyether soft segment |
Special properties of TPEE/TPEE 具有的特性
1. High impact strength, excellent high- and low-temperature performance, creep resistance, impact resistance, and fatigue resistance.
2. High flexibility, high tensile strength, and excellent abrasion resistance (with wear resistance comparable to TPU).
3. Excellent rebound performance, strong recovery elasticity, and a high modulus of elasticity (compared to TPU, especially above 50D, its performance is even superior).
4. Excellent oil- and water-resistance, good resistance to chemical solvents, acid- and alkali-resistant, and resistant to thermal and UV aging (more hydrolysis- and chemical-solvent‑resistant than TPU).
5. Naturally white, easy to color, and exhibits excellent dyeability; it crystallizes rapidly (making demolding and molding easier than TPU), is simple to process and mold, and offers good dimensional stability.
6. A wide range of models is available to meet diverse production and processing requirements, and the material can be repeatedly recycled and reused with minimal performance degradation, while being environmentally friendly.
Figure 6. Differences Among Keheng Polymer TPEE Grades
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