definition:

Thermoplastic Elastomer-TPE, also known as Thermoplastic Rubber-TPR, is a new type of polymer material with both rubber and plastic properties.

Thermoplastic elastomer history

In 1958, Goodrich launched commercial TPU-Estane

In 1965, Shell produced commercial linear SBS-Kraton D

In 1967, Mitsubishi - Monsanto produced commercial PVC/NBR-Sunprene

In 1972, Uniroyal developed a mixed TPO-TPR

In 1972, DuPont developed TPEE-Hytrel

In 1972, Shell produced commercial hydrogenation SEBS-Kraton G

In 1974, Hetai introduced Kraton D to produce EMP ®  compound

In 1981, Monsanto developed dynamic sulfur adding PP/EPDM-Santoprene

In 1981, Atoken launched TPAE-Pebax

In 1984, Hetai introduced Kraton G to produce Epion ®  compound

In 1988, Shell launched functionalized SEBS-FG 1901X

In 1900, Kuraray launched SEPS-Septon

classification

Thermoplastic elastomer (classified by chemical composition)

Polystyrene elastomer TPS

Polyurethane elastomer TPU

Polyester elastomer TPEE

Polyamide elastomer TPEA

Polyolefin elastomer TPO (PVC, NBR)

Elastomer alloy EA (EPDM, NBR, NR, PP)

TPE aging mechanism

The photoaging degradation of TPE materials follows the material aging mechanism. TPE materials absorb the energy in the sun to reach the excited state and produce free radicals. The free radicals react with the oxygen in the air to produce peroxides. The peroxides cause the further degradation of the polymer to form peroxides. The free radical chain segments continue to grow, resulting in the reduction of the mechanical properties of the materials, loss of surface gloss, and loss of use value.

TPE weathering solution

SUNSHOW Chemical has developed a series of weather-resistant solutions for different TPE materials, such as the combination of benzophenone type absorbent Plastozene 531 and HALS type Plastozene 622, which can achieve good results in polyolefin elastomer (TPO) film products; For example, it can be used to increase the demand of CPVC, TPO and other elastomers in terms of ultra-long term weather resistance by adding the combination of Plasticin 5586 (salicylic acid UVA) and 5583 (hindered amine HALS); For example, the addition of Plasticine 5566, which integrates a variety of weathering mechanisms, has a good weathering effect in terms of polyurethane elastomer (TPU); For example, the ultraviolet absorber Plastozen 5519 and the HALS-type Plastozen 5589 are used together to provide excellent long-term weather resistance for the vehicle TPV sealing guide groove and meet the requirements of its mechanical properties; For example, the synergetic effect of the ultraviolet absorber Plasticin 5523, Plasticin 5544 and Plasticin 622 of HALS provides excellent weather resistance requirements for the flame-retardant polystyrene elastomer TPS.