Musiyano uripo pakati peTPU polyester uye polyether, uye hukama pakati pepolycaprolactone neTPU

Musiyano uripo pakati peTPU polyester uye polyether, uye hukama huripopolycaprolactone TPU

Kutanga, musiyano pakati peTPU polyester uye polyether

Thermoplastic polyurethane (TPU) imhando yemhando yepamusoro elastomer zvinhu, iyo inoshandiswa zvakanyanya munzvimbo dzakasiyana siyana. Zvinoenderana neyakasiyana chimiro chechikamu chakapfava, TPU inogona kukamurwa kuita polyester mhando uye polyether mhando. Pane misiyano yakakura mukuita uye kushandiswa pakati pemhando mbiri idzi.

Polyester TPU ine yakakwira simba uye kupfeka kuramba, tensile zvivakwa, kubhenda zvivakwa uye solvent kuramba zvakanaka. Uye zvakare, ine yakanaka yakakwirira tembiricha kuramba uye inokodzera kunyorera munzvimbo dzekushisa kwepamusoro. Nekudaro, iyo hydrolysis kuramba yepolyester TPU haina kunaka, uye zviri nyore kupindwa nemamorekuru emvura uye kutsemuka.

Mukupesana ne,polyether TPUinozivikanwa nokuda kwesimba rayo guru, hydrolysis kuramba uye kusimba kwepamusoro. Kuderera kwayo kwekushisa kwekushisa kwakanakawo, kwakakodzera kushandiswa munzvimbo dzinotonhora. Nekudaro, iyo peel simba uye kutsemuka kusimba kwepolyether TPU haina kusimba, uye kusimba, kupfeka uye kubvarura kuramba kwepolyether TPU zvakare kwakaderera kune iyo yepolyester TPU.

Chechipiri, iyo polycaprolactone TPU

Polycaprolactone (PCL) chinhu chakakosha chepolymer, nepo TPU ipfupi kune thermoplastic polyurethane. Kunyangwe iwo ese ari maviri e polymer zvinhu, polycaprolactone pachayo haisi TPU. Nekudaro, mukugadzirwa kweTPU, polycaprolactone inogona kushandiswa seyakakosha chikamu chakapfava kuita neisocyanate kugadzira TPU elastomers ine yakanakisa zvivakwa.

Chechitatu, hukama pakati pepolycaprolactone uyeTPU masterbatch

Masterbatch inoita basa rakakosha mukugadzirwa kweTPU. Masterbatch is high-concentration prepolymer, kazhinji inoumbwa nemhando dzakasiyana-siyana dzakadai sepolymer, plasticizer, stabilizer, etc. Mukugadzirwa kweTPU, masterbatch inogona kuita neketani extender, crosslinking agent, nezvimwewo, kugadzira zvigadzirwa zveTPU zvine maitiro chaiwo.

Seyakanyanya kuita polymer zvinhu, polycaprolactone inowanzoshandiswa sechinhu chakakosha cheTPU masterbatch. Ne prepolymerization yepolycaprolactone nezvimwe zvikamu, TPU zvigadzirwa zvine yakanakisa mechaniki zvivakwa, hydrolysis kuramba uye yakaderera tembiricha kuramba inogona kugadzirwa. Izvi zvigadzirwa zvine tarisiro yakawanda yekushandiswa muminda yezvipfeko zvisingaoneki, zvigadzirwa zvekurapa, shangu dzemitambo nezvimwe.

Chechina, maitiro uye mashandisirwo epolycaprolactone TPU

Polycaprolactone TPU inofunga nezvezvakanakira zvepolyester uye polyether TPU, uye ine zvirinani zvakakwana zvivakwa. Haisi chete ine yakakwirira mechanical simba uye kupfeka kuramba, asiwo inoratidza yakanaka hydrolysis kuramba uye kuderera tembiricha kuramba. Izvi zvinoita kuti polycaprolactone TPU ive nehupenyu hurefu hwebasa uye kugadzikana munzvimbo dzakaoma uye dzinoshanduka.

Mumunda wezvipfeko zvisingaonekwe, polycaprolactone TPU yave iyo inosarudzika zvinhu nekuda kwekunaka kwayo kwakazara zvinhu. Inogona kuramba kukukurwa kwezvinhu zvekunze zvakaita semvura ine acid, guruva, madonhwe eshiri, uye kuve nechokwadi chekuita uye hupenyu hwembatya dzemotokari. Uye zvakare, muminda yemidziyo yekurapa, midziyo yemitambo, nezvimwewo, polycaprolactone TPU yakagamuchirawo kutariswa kwakapararira kwekuchengetedza kwayo uye kuvimbika.

Muchidimbu, pane misiyano yakakura pakati peTPU polyester uye polyether mukuita uye mashandisiro, nepo polycaprolactone, seimwe yeakakosha zvikamu zveTPU, inopa TPU zvigadzirwa zvakanakisa nzwisisika zvivakwa. Nekunzwisisa kwakadzama kwehukama uye hunhu pakati pezvishandiso izvi, tinogona kusarudza zvirinani nekushandisa zvakakodzera TPU zvigadzirwa kuti zvizadzise zvinodikanwa zveminda yakasiyana.