TPEE 82D

tpee 82d--as a reliable partner of dupont, ncm hersbit chemicalco., ltd. has passed the strict certification of dupont and has thedesignated distribution right of hytrel products in china. it helpsdupont to promote hytrel products to various industries, cooperateswith engineers' endless creativity and gives users great impetus,develop innovative business components and products that save cost,improve performance, and reduce weight. about 35% of them are usedfor industrial rubber products, such as rubber tubes and tapes; 20%for auto parts; the rest for household appliances, such assilencing gears, telephone encoder cards, etc. the disadvantage isthat the hardness is large, it is not easy to produce softproducts, and the compression deformation resistance, hot waterresistance and strong acid resistance are poor. in addition, uniformity and price are also problems, so it has beenimproved for many years. the world-class chemical companies such asvalox, arnite1, and pelprene have been involved in tpee developmentand started to realize commercial production. the newly improvedtpee includes polyester ether copolymer with polycaprolactone assoft chain segment, which can improve its water hydrolysisresistance, cold resistance, heat resistance, weather resistanceand mechanical strength

tpee was developed by dupont in the early 1960s in thelaboratory, commercialized in 1972, and produced in large in europe in 1984. hytrel, as a tpee brand of dupontcompany, has been used up to now. the stable production processensures the excellent performance of its products, and it enjoys ahigh reputation in tpee products. as a reliable partner of dupont,shanghai heshibi chemical co., ltd. has passed the strictcertification of dupont and has the designated distribution rightof hytrel products in china. it helps dupont to promote hytrelproducts to various industries, cooperates with engineers' endlesscreativity and gives users great impetus, develop innovativebusiness components and products that save cost, improveperformance, and reduce weight.

tpee is widely used in automobile field because of its excellentcomprehensive performance. tpee shows its unique advantages whenused as the material of airbag cover plate. tpee is a kind of blockcopolymers containing hard crystalline phase of aromatic polyesterand soft continuous phase of aliphatic polyester or polyether, alsocalled polyester rubber. tpee is a linear block copolymer whosestrength is produced in the polyester block, or hard block, ofcrystalline phase and dispersed in the amorphous soft block ascontinuous phase. the continuous phase is composed of soft segmentsand other polyester blocks which are not crystallized. the wholeelastomer is composed of a continuous amorphous network and a partof continuous crystalline network. when the elastomer undergoes anexternal force, the stress is first transmitted to the crystallinephase through the connecting molecules. when the microcrystallineis oriented by the force, the stress is transmitted to the networkstructure of the copolymer, and the final elastic region bears allthe stress, and the copolymer produces elastic strain just like thecrosslinked elastomer.