KH-CR Series: Long-Term High-Temperature-Resistant TPEE
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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Special Features: TPEE Performance Data and Application Examples
| (1) KH-CR Series: Long-term high-temperature-resistant TPEE | |||||||||||
| 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 |
Volume resistivity rate Ohm*cm |
Surface resistance rate Ohm |
| KH-CR072 | 72 | 47 | 520 | 7/240℃ | 1.24 | 218 | 550 | 205 | ≤-35 | 1.0E+14 | 7.0E+15 |
| KH-CR272 | 72 | 46 | 500 | 22/240℃ | 1.24 | 218 | 550 | 205 | ≤-35 | 1.0E+14 | 7.0E+15 |
| KH-CR063 | 63 | 45 | 610 | 7/230℃ | 1.21 | 212 | 320 | 196 | ≤-50 | 8.0E+13 | 4.0E+15 |
| KH-CR263 | 63 | 43 | 600 | 23/230℃ | 1.21 | 212 | 320 | 196 | ≤-50 | 8.0E+13 | 4.0E+15 |
| KH-CR055 | 55 | 37 | 720 | 7/220℃ | 1.18 P |
203 10 |
220 | 182 | ≤-60 | 8.0E+13 | 4.0E+15 |
| KH-CR255 | 55 | 36 | 700 | 22/220℃ | 1.18 | 203 | 220 | 182 | ≤-60 | 8.0E+13 | 4.0E+15 |
| KH-CR040 | 40 | 21 | 900 | 7/220℃ | 1.12 | 198 | 80 | 141 | ≤-70 | 4.0E+13 | 2.0E+15 |
| KH-CR240 | 40 | 20 | 880 | 22/220℃ | 1.12 | 198 | 80 | 141 | ≤-70 | 4.0E+13 | 2.0E+15 |
| KH-CR130 | 30 | 17 | 980 | 15/220℃ | 1.07 | 188 | 40 | 125 | ≤-75 | 2.0E+12 | 2.0E+14 |
Examples of applications for the KH-CR series ：
Compared with standard grades, this series exhibits exceptionally superior long-term high-temperature resistance and resistance to high-temperature air aging; for example, KH-CR163 can withstand 150°C over the long term and 200°C for short periods. It is suitable for injection molding or extrusion and is widely used in components requiring sustained high-temperature performance.
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 elastic modulus (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 (easier to demold and form 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 with minimal performance degradation, making it environmentally friendly.
Figure 6. Differences Among Keheng Polymer TPEE Grades
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