Zida Zapamwamba za TPU Zopangira Mafilimu a Extrusion TPU

Mafotokozedwe ndi Ntchito ZamakampaniTPU zopangirachifukwa mafilimu amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha machitidwe awo abwino. Zotsatirazi ndizofotokozera mwatsatanetsatane chinenero cha Chingerezi: 1. Basic Information TPU ndi chidule cha thermoplastic polyurethane, yomwe imadziwikanso kuti thermoplastic polyurethane elastomer. Zipangizo zamakanema za TPU nthawi zambiri zimapangidwa ndi polymerizing zida zazikulu zitatu: ma polyols, diisocyanates, ndi ma chain extenders. Ma polyols amapereka gawo lofewa la TPU, ndikulipatsa kusinthasintha komanso kusinthasintha. Ma diisocyanates amachita ndi ma polyols kuti apange gawo lolimba, lomwe limathandizira kulimba ndi kulimba kwa TPU. Ma chain extenders amagwiritsidwa ntchito kuonjezera kulemera kwa maselo ndikusintha makina a TPU. 2. Njira Yopangira Mafilimu a TPU amapangidwa kuchokera ku zipangizo zamtundu wa TPU kupyolera mu njira monga calendering, kuponyera, kuwomba, ndi kupaka. Pakati pawo, kusungunula - extrusion ndondomeko ndi njira wamba. Choyamba, polyurethane imasakanizidwa ndi zowonjezera zosiyanasiyana, monga mapulasitiki kuti apititse patsogolo kusinthasintha, zolimbitsa thupi kuti ziwongolere kutentha ndi kukana kuwala, komanso utoto wopaka utoto. Kenaka, amatenthedwa ndikusungunuka, ndipo pamapeto pake amakakamizika kupyolera mu kufa kuti apange filimu yosalekeza, yomwe imakhazikika ndikubala mumpukutu. Njira yoziziritsa ndiyofunikira chifukwa imakhudza kristalo ndi mawonekedwe a mamolekyu a TPU, motero amakhudza zomaliza za filimuyo. 3. Mawonekedwe Ogwira Ntchito 3.1 Physical Properties Mafilimu a TPU ali ndi kusinthasintha kwakukulu ndi kusinthasintha, ndipo amatha kutambasulidwa ndi kupunduka mpaka kufika pamlingo wina, ndipo akhoza kubwerera ku mawonekedwe awo oyambirira popanda kusinthika, komwe kuli koyenera kwa zochitika zomwe zimafuna kupindika pafupipafupi ndi kupotoza. Mwachitsanzo, popanga zida zamagetsi zosinthika, makanema a TPU amatha kugwirizana ndi mawonekedwe opindika a zida. Panthawi imodzimodziyo, imakhalanso ndi mphamvu zowonongeka komanso zowonongeka - kukana mphamvu, zomwe zingathe kukana mphamvu zakunja ndi kuwonongeka. Izi zimapangitsa makanema a TPU kukhala oyenera kugwiritsidwa ntchito pamapaketi oteteza, pomwe amafunikira kupirira kugwiriridwa movutikira. 3.2 Chemical Properties Makanema a TPU ali ndi kukana kwa dzimbiri kwa mankhwala, ndipo amalekerera ma acid wamba, ma alkali, zosungunulira, ndi zina zambiri, ndipo sizosavuta kuwononga. Makamaka, kukana kwa hydrolysis kwa polyether - mtundu wa TPU mafilimu amawalola kuti azikhala okhazikika m'madzi - malo olemera. Katunduyu amawapangitsa kukhala abwino kugwiritsidwa ntchito ngati zokutira pansi pamadzi ndi nembanemba yopanda madzi. 3.3 Kulimbana ndi NyengoMafilimu a TPUamatha kukhala okhazikika m'malo osiyanasiyana otentha. Sizosavuta kukhala zolimba komanso zolimba m'malo otsika - kutentha, komanso sizosavuta kufewetsa ndi kupunduka m'malo otentha kwambiri. Amakhalanso ndi luso lotha kukana kuwala kwa ultraviolet, ndipo siwophweka kukalamba ndi kuzimiririka pansi pa kuwala kwa nthawi yaitali. Izi zimapangitsa kuti mafilimu a TPU akhale oyenera kugwiritsidwa ntchito panja, monga zotchingira zakunja zamagalimoto ndi zovundikira mipando yakunja. 4. Main Processing Njira Njira zazikulu zopangiraMafilimu a TPUzikuphatikizapo kuwomba - kuumba, kuponyera, ndi calendering. Kupyolera mu kuwomba - kuumba, mafilimu a TPU okhala ndi makulidwe osiyanasiyana ndi m'lifupi amatha kupangidwa powonjezera chubu chosungunuka cha TPU. Kuponya kumaphatikizapo kuthira mawonekedwe a TPU amadzimadzi pamalo athyathyathya ndikuwalola kulimba. Calender imagwiritsa ntchito zodzigudubuza kusindikiza ndikusintha TPU kukhala filimu ya makulidwe omwe mukufuna. Njirazi zimatha kupanga makanema a TPU a makulidwe osiyanasiyana, m'lifupi, ndi mitundu kuti akwaniritse zosowa zamitundu yosiyanasiyana yogwiritsira ntchito. Mwachitsanzo, makanema owonda komanso owoneka bwino a TPU nthawi zambiri amagwiritsidwa ntchito popaka, pomwe makanema okhuthala komanso achikuda atha kugwiritsidwa ntchito pokongoletsa. 5. Mafilimu a Application Fields TPU akhoza kuphatikizidwa ndi mitundu yosiyanasiyana ya nsalu kuti apange nsapato - nsalu zapamwamba zokhala ndi ntchito zopanda madzi komanso zopuma mpweya, kapena nsalu zokongoletsera, zomwe zimagwiritsidwa ntchito kwambiri muzovala za tsiku ndi tsiku, zovala za sunscreen, zovala zamkati, raincoats, windbreakers, T - malaya, masewera ndi nsalu zina. Muzachipatala,Mafilimu a TPUamagwiritsidwa ntchito ngati mavalidwe a bala ndi zokutira zida zamankhwala chifukwa cha kuyanjana kwawo ndi biocompatibility. Kuphatikiza apo, TPU yakhala ikugwiritsidwa ntchito kwambiri pazinthu za nsapato, zoseweretsa zokhala ndi mpweya, zida zamasewera, zida zampando wamagalimoto, maambulera, masutukesi, zikwama zam'manja ndi magawo ena. Mwachitsanzo, mu zipangizo zamasewera, mafilimu a TPU amagwiritsidwa ntchito popanga mapepala otetezera ndi zogwira, zomwe zimapereka chitonthozo komanso kulimba.