Zipangizo za waya ndi chingwe za TPE ndi TPU Kuyerekeza magwiridwe antchito ndi kugwiritsa ntchito

Utsi wochepa | Wopanda Halogen | Woletsa moto

Ma elastomer a Thermoplastic tsopano akukondedwa ndi ambiri Waya ndi Chingwe mafakitale chifukwa cha ubwino wawo wosinthasintha, kusinthasintha, komanso kumveka bwino. Popeza zipangizo za PVC zimakhala zochepa nthawi zambiri, kusinthasintha kwa thermoplastic kwalimbikitsidwa kwambiri.

M'zaka 15 zapitazi, ku China, ma elastomer a thermoplastic omwe amaletsa moto akuchulukirachulukira. Ma elastomer a thermoplastic omwe amaletsa moto, makamaka TPE ndi TPU, akhala akugwiritsidwa ntchito kwambiri m'mizere ya data ya zinthu zomwe ogula amagwiritsa ntchito, mizere yatsopano yodzaza ndi mphamvu komanso mizere yotetezedwa, komanso mizere yamagetsi yamagetsi ambiri m'galimoto.

Komabe, pakadali mavuto ambiri okhudzana ndi zinthu zomwe zimachitika mu kafukufuku wokhudza ma elastomer a thermoplastic omwe amaletsa moto. Mwachitsanzo, abwenzi nthawi zambiri amafunsa kuti pali kusiyana kotani pakati pa TPE ndi TPU. Nkhaniyi ikufotokoza mwachidule makhalidwe, kufananiza magwiridwe antchito ndi kagwiritsidwe ntchito ka ma elastomer a thermoplastic TPE ndi TPU waya ndi zingwe.

01 Kugwiritsa ntchito TPE m'munda wa waya ndi chingwe

TPE imatanthauza elastomer ya thermoplastic yokhala ndi SEBS ngati matrix resin. SEBS ndi block copolymer yopangidwa ndi styrene (S)-ethylene (E)/butene (B)-styrene (S).

Ma bond awiri mu SEBS, ndiko kuti, SBS, amadzazidwa ndi hydrogenation, kotero SEBS imakhala ndi kukana kwabwino kwa nyengo, kukana kutentha, kukana kupsinjika kwa kusinthasintha kwa mpweya komanso mphamvu zabwino kwambiri zamakanika.

(1) Zogulitsa za SEBS zili ndi mphamvu yabwino kwambiri yotetezera magetsi, sizimayambitsa poizoni, sizimalimbana ndi nyengo komanso sizimakalamba, zimasinthasintha bwino komanso zimakhala ndi mphamvu zambiri, komanso zimakhala ndi kutentha kwambiri. Ndi zipangizo zabwino kwambiri zopangira zophimba zakunja ndi matepi oteteza mawaya ndi zingwe. Zimagwiritsidwa ntchito kwambiri m'malo osungira magetsi anzeru am'manja ndi zida zapakhomo ndi zina.

Pakadali pano, chakhala chizolowezi chosintha mawaya a PVC m'malo mwa mawaya otsika mphamvu (monga mawaya a mahedifoni, mawaya ochaja, mawaya a USB, mawaya a audio/video, mawaya apakompyuta, ndi zina zotero).

(2) Popeza zinthu zamagetsi zomwe zimagwiritsidwa ntchito ndi ogula zimakhala ndi mawonekedwe a zosintha mwachangu komanso nthawi yochepa yogwirira ntchito, chifukwa cha nthawi yokonzanso kugwiritsa ntchito, zinthu zokhudzana ndi SEBS zili ndi malo ambiri oti zipangidwe mumakampani awa.

Chifukwa cha kufunikira kwakukulu kwa kukana moto wa chingwe komanso momwe chitetezo cha chilengedwe chikugwirira ntchito m'nyumba ndi kunja, kuchuluka kwa anthu omwe amagwiritsa ntchito kukupitilirabe, ndipo chizolowezi cha zinthu za SEBS zoletsa moto chikukula kwambiri.Chingwe ichi Zipangizo monga PVC ndi CPE zikuonekera kwambiri mtsogolomu, ndipo mwayi wogwiritsa ntchito mtsogolo ndi waukulu. Pakadali pano, pali kufunikira kwakukulu kwa msika kwa SEBS kusintha kwa SEBS komwe kumachepetsa moto komanso chitukuko chapamwamba.

Zipangizo zapadera za TPE: Pogwiritsa ntchito ndi kupanga ukadaulo watsopano wa zipangizo za TPE, zipangizo zapadera za TPE zomwe zilipo panopa zimaphatikizapo TPE yoyendetsa magetsi, TPE yoteteza kutentha, zinthu zotetezera kutentha za TPE, XLTPO yolumikizidwa ndi radiation, TPE yolimba kwambiri, TPE yoletsa moto kwambiri, ndi zina zotero.

02 Kugwiritsa ntchito TPU m'munda wa waya ndi chingwe

TPU thermoplastic polyurethane elastomer, yomwe ndi linear block copolymer yopangidwa ndi diisocyanate ndi macromolecular polyol, chain extender/crosslinker ndi zowonjezera zochepa. Chimodzi makamaka ndi polyurethane material, ndipo china makamaka ndi polyether type.

Kawirikawiri ndi polima ya block, ndipo PU yomwe imapezeka pochita ndi polyol ya unyolo wautali ndi isocyanate imagwiritsidwa ntchito ngati gawo lofewa, ndipo PU yomwe imapezeka pochita ndi diol ya unyolo waufupi ndi isocyanate imagwiritsidwa ntchito ngati gawo lolimba.

Kugwiritsa ntchito ma elastomer a TPU mu mawaya ndi zingwe kumachitika makamaka m'magawo otsatirawa:

·Chingwe cholumikizira mawaya agalimoto: Chingwe cholumikizira mawaya choletsa loko (ABS), chingwe cha odometer, chingwe cholumikizirana ndi magalimoto, chingwe choyatsira moto choletsa kuyaka, ndi zina zotero;

·Zingwe zofufuzira malo: zingwe zofufuzira za malo ofulira mafuta\nyanja\dziko, zingwe zozindikira mafunde a chivomerezi, ndi zina zotero;

·Mawaya amagetsi a ogula: chingwe cha mahedifoni, (choletsa moto) Chingwe cha Deta chochajira foni yam'manja, chingwe cha mawu, chingwe cha USB, chingwe chowonjezera cha kompyuta, ndi zina zotero;

·Zingwe zamagetsi ndi zamafakitale: zingwe za CNC zamakompyuta, zingwe zamagetsi zam'mphepo, zingwe zamigodi, zingwe zamagetsi;

·Chingwe cholumikizirana ndi waya: chingwe cha fiber optic chomwe chili ndi chivundikiro, choletsa moto chofunikira;

·Zingwe za zida zachipatala: chingwe cha electrocardiogram, chingwe chozindikira mpweya m'magazi, chingwe cha electrode lead, chingwe cha massager.

03 Kuyerekeza magwiridwe antchito a waya ndi zingwe za TPE ndi TPU

(1) TPU ili ndi mphamvu yabwino kuposa TPE, mphamvu yokoka komanso kuchuluka kwa kutalikitsa: Mphamvu yokoka ya TPU ndi yowirikiza kawiri mpaka katatu kuposa mphira wachilengedwe ndi mphira wopangidwa, ndipo TPU ili ndi kukana kopindika bwino; kukana koipa, mtengo woipa wa Taber ndi 0.35-0.5mg, womwe ndi wochepa kwambiri pakati pa pulasitiki, kotero imakhala ndi kukana koipa kwa kusweka kwa khungu.

(2) Kumva kwa TPE ndi TPU komanso magwiridwe antchito ofewa: TPE imatha kusintha kuuma ndi kusinthasintha kuyambira madigiri 0 mpaka 99A, pomwe kuuma kwa TPU ndi 60 ~ 95A, ndipo imasungabe kulimba pamene kuuma kuli pamwamba pa 85A. Ichi ndi chikhalidwe chomwe ma elastomer ena alibe, kotero TPU ili ndi mphamvu zothandizira katundu wambiri komanso mphamvu yabwino yoyamwa ndi kutulutsa; kumveka kwa awiriwa ndi kosiyana kwambiri m'mitundu yosiyanasiyana ya kuuma, ndipo imasintha malinga ndi zofunikira; TPE imakhala ndi kutayika kwakukulu kwa elastiki m'mitundu yambiri ya kuuma.

(3) Polyether TPU ndi TPE zili ndi kukana bwino madzi, koma polyester TPU ili ndi kukana kochepa madzi; TPU ili ndi kukana bwino mafuta kuposa TPE.

(4) Kukana kwa UV kwa polyester TPU ndi kochepa ndipo kumakhala kosavuta kuoneka wachikasu. Chifukwa mphete ya benzene ya polyurethane hard segment ndi aromatic curing agent zimagwirizanitsidwa ndi carboxylic acid ester, okosijeni ndi kukonzanso kumachitika, ndikupanga kapangidwe ka quinone ndi magulu a chromogenic, motero amapanga unsaturated bond mu gawo la polymer; pansi pa mphamvu ya ultraviolet rays, mphamvu "free radicals" zimaperekedwa kuti zisinthe mtundu, zomwe zimapereka mphamvu zokwanira kuwononga ma chemical bonds a ma polima ambiri, kuyambitsa automatic oxidation reaction, ndikuyambitsa ukalamba ndi kuwonongeka.

Kuchuluka kwa utoto wa polyether TPU kuli bwino kuposa kwa polyester TPU. Kumatha kusintha mphamvu ya anti-UV ikasinthidwa, kuonetsetsa kuti siikhala yachikasu mkati mwa chaka chimodzi mpaka ziwiri. Mtundu wa anti-UV wa TPE nthawi zambiri umakhala wabwino kuposa wa TPU, kotero TPE yosapanga utoto imakhala yabwino kwambiri kuposa ya TPU.

Mwachidule, polyether TPU ili ndi ubwino wokana hydrolysis, kukana mildew, kupirira kwambiri komanso kugwira ntchito bwino kutentha kochepa. Polyester TPU ili ndi ubwino wokana mphamvu zambiri, kusinthasintha, kukana kukalamba, kukana zosungunulira, kukana okosijeni ndi kukana kutentha kwambiri.

04 Kukonza ndi kupanga zipangizo za waya ndi chingwe za TPE ndi TPU komanso kuyerekeza mtengo

Kuyerekeza kwa kukonza ndi kupanga zinthu za TPE ndi TPU ndi waya ndi chingwe:

(1) TPU ndi yosavuta kuyamwa madzi. Imafunika kuyatsidwa pa 100℃*3~4H isanakonzedwe, pomwe TPE imaumitsidwa pa 70~80℃*2H;

(2) Zofunikira za TPU pa zotulutsira. Zotulutsira za magawo atatu zokhala ndi chiŵerengero cha L/D pakati pa 20-30 ndi chiŵerengero cha kupsinjika pakati pa 2-4 ndizoyenera kukonza TPU; kusiyana pakati pa zokulungira ndi mapaipi azinthu ndi pafupifupi 0.1-0.2mm. Kapangidwe kabwino ka zokulungira kayenera kupewa kukangana kwambiri ndi kutentha kwambiri, zomwe zimapangitsa kuti zinthu ziwole ndi kusweka, potero kuchepetsa mphamvu zamakina za chinthucho.

Liwiro la sikuru limadalira kukula kwa sikuru. Popeza TPU imakhudzidwa ndi kukazinga ndi kudula, liwiro lalikulu kwambiri lingayambitse kusweka kwa TPU mosavuta. Ngati ili yotsika kwambiri, ingayambitsenso kusweka chifukwa cha nthawi yayitali yomwe imakhalapo. Nthawi zambiri, liwiro la sikuru limakhala pakati pa 25-60rpm, pomwe TPE imafuna chotulutsira chomasuka.

(3) Musanayambe TPU, onetsetsani kuti screw, mutu wa makina ndi silinda ya screw zatsukidwa popanda ngodya zofewa. Kukonzekera konse kwatha, monga kukonzekera zinthu zomalizidwa, kusindikiza ndi kukonza zolakwika, ndi zina zotero. Gawo lomaliza ndikutsegula chinthu chomalizidwa musanakoke hopper kuti mutulutse zinthuzo ku screw. Pa gawo loyamba loyambitsa makina, yesani kuchepetsa nthawi yokhalamo ya rabara pa screw. Zinthuzo zikatulutsidwa, makinawo aziyambitsidwa mwachangu mkati mwa mphindi 5. Nthawi yofunikayi iyenera kuyendetsedwa bwino pachiyambi. Samalani dongosolo, ndipo mudzakhala ndi zotsatira kawiri ndi theka la khama.

(4) TPE siigwira ntchito yometa ubweya, ndipo siingawole mosavuta ngati ikhala nthawi yayitali. Ndi yosavuta kuikonza.

Kuyerekeza mtengo wogwiritsira ntchito waya ndi zingwe za TPE ndi TPU:

(1) Mtengo wa zinthu za TPE ndi polyester TPU susiyana kwambiri. Polyester TPU ndi yokwera pang'ono, koma mtengo wa polyether TPU ndi wokwera pang'ono.

(2) Zitatuzi zili ndi TPE density yotsika kwambiri, kutsatiridwa ndi polyether TPU density, ndi polyester TPU density yochuluka kwambiri, komanso mtengo wotsika kwambiri wogwiritsa ntchito TPE.

Poyerekeza makhalidwe oyambira a zipangizo za TPE ndi TPU ndi ukadaulo wopangira zinthu, zonsezi zili ndi ubwino ndi kuipa kwake. Komabe, kuchokera ku kusanthula kwa unyolo wa makampani a TPU ndi TPE, njira yamsika wa zinthu zopangira TPE ndi yokhazikika komanso yosavuta, pomwe zinthu zopangira TPU zambiri zimadalira zinthu zochokera kunja, ndipo njira yopangira zinthu zapakhomo imakhala yocheperako, kotero kukhazikika kwa zinthu kumakhala kovuta kutsimikizira. Makhalidwe a zinthu zopangira za wopanga aliyense amasiyana kwambiri. Anzathu a elastomer ayenera kumvetsetsa mokwanira kuti athandize pakukula kwa ntchito ndi kusintha.

Kudzera mu kufufuza mozama kapangidwe ka mkati mwa zinthuzo, kuyang'anira kusintha kwa magwiridwe antchito nthawi yeniyeni komanso kuzindikira kosalekeza kukhazikika, kugwirizana ndi kupirira kwa mawaya pansi pa madera ovuta a nyanja kukuwonetsedwa. Poyembekezera mtsogolo, kusintha kosalekeza kwa zinthuzo ndi kapangidwe ka mizere yotumizira sitima zapamadzi mosakayikira kudzakhazikitsa maziko olimba kwambiri a migodi ndi kugwiritsa ntchito zinthu za m'nyanja.       

Shanghai Lansheng Chingwe chingakwaniritse zosowa zanu zosiyanasiyana za chingwe.