1. Kuyamba
Eva ndiye chidule cha ethylene vinyll acetate cololymer, polyminin polymer. Chifukwa cha kutentha kwake kochepa, madzi abwino, opotoka komanso zinthu zopanda ma polojeni, ndipo zimakhala ndi zinthu zambiri, kotero mtengo wamagetsi umatha kugwiritsidwa ntchito ngati chofinya, zinthu zopumira; Itha kupangidwa mu ma thermoplastic zinthu, ndipo imatha kupangidwa mu ma thermoseting pamtanda.
Eva Ogwiritsa ntchito mitundu yambiri, yokhala ndi lala wokhazikika, imatha kukhala yopanda utsi wochepa kapena wopanda mphamvu; Sankhani nkhani zapamwamba za Eva monga momwe maziko amathanso kupanga zinthu zosagwira mafuta; Sankhani mndandanda wosungunuka wa Eva, onjezerani 2 mpaka 3 kuti kudzazidwa kwa Eva Raderents kungapangidwe kuti athe kutulutsidwa ndi zotchinga za oxygen (zodzaza).
Mu pepala ili, kuchokera ku zinthu zopangidwa ndi Eva, kuyambitsa kwa ntchito yake mu zikhulupiriro za akatswiri ndi chitukuko.
2. Zojambula
Mukamapanga kaphatikizidwe, kusintha kuchuluka kwa polymeristisis digness n / m amatha kupanga VA yokhala ndi 5 mpaka 90% ya Eva; Kuchulukitsa digiri yonse ya polymerisation kumatha kubereka kulemera kwa masentimita kumazana masauzande mazana a Eva; Va zomwe zili pansipa 40%, chifukwa cha kukhalapo kwa curstalissistion pang'ono, kunenepa kwambiri, komwe kumadziwika ngati Eva pulasitiki; Pamene VA ili ndi wamkulu kuposa 40%, elastor ngati elastomer yopanda crystapussistion, imadziwika kuti evm mphira.
1. 2 katundu
Chinsanga cha Eva ndi mzere wokhazikika, kotero uli ndi ukalamba wabwino, nyengo ndi ozoni odana.
Eva molekyu unyolo waukulu alibe magwiridwe achulukitsa, acyl, magulu a Amine ndi magulu ena osavuta kusuta meth, phenyl, Cyano ndi magulu ena. Kuphatikiza apo, Molecule yokhayo ilibe zinthu zonyansa, chifukwa chake zimakhala zoyenera kusuta fodya.
Kukula kwakukulu kwa ma vinyl acetate (VA) kumbali ya Eva Mbali ya Eva United ndi kuwala kwake kwa sing'anga ya vinyl ku Vinyl kumbuyo kwa michere ya michere, yomwe imapanga malo opangira mafuta othandiza kwambiri. Izi ndizowona kuti ndi utsi wotsika komanso wosuta fodya, monga momwe moto umakhalira ndi voliyumu yoposa 50% (mwachitsanzo) 3, mg (oh, ndi zina) 2, Eva wokhala ndi sing'anga kuti agwiritsidwe ntchito ngati maziko opanga utsi wotsika komanso wosuta flamer zotsekerera zopepuka ndi katundu wabwino kwambiri.
Monga momwe Eva adalowera gulu la Rinyl la Acetate (VA) ndi polar, zomwe zili pamwambazi, pormer ndibwino kutsutsana ndi mafuta. Kukaniza kwamafuta komwe kumafunikira ndi chinsinsi makamaka chimatanthawuza kuthekera kolimbana ndi sitalar mchere. Malinga ndi lingaliro lofanana, Eva wokhala ndi zomwe zalembedwazi amagwiritsidwa ntchito ngati maziko a maziko opanga zotchinga pang'ono ndi zotchinga bwino ndi madzi kukana.
Eva mamolekyu a alfa-olefin h atomu imagwira ntchito yogwira ntchito kwambiri, mu ma radicals a peroxide kapena ma radiat-all-racks kapena mphira wovuta wa waya wapadera ndi zingwe.
Kuphatikiza kwa gulu la vinyl acetate kumapangitsa kutentha kusungunuka kwa eva kugwa kwambiri, ndipo kuchuluka kwa maunyolo a VA yaying'ono kumatha kuwonjezeka kwa EVA. Chifukwa chake, magetsi ake ochulukirapo ndi abwino kuposa kapangidwe kake ka polyelylene wofanana, nakhala ndi zinthu zomwe zimakonda chifukwa cha zida zotchinga zotchinga ndi halogen ndi zotchinga zaulere.
Maudindo 2
2. 1
Mphamvu za Eva ndi zamakina, kukana kutentha, kukana nyengo, kukana kwa ozoni, zamagetsi ndizabwino kwambiri. Sankhani gawo loyenerera, lingapangidwe kutentha, chiphama chamadzi, komanso mafuta, zosungunulirana ndi vuto lapadera.
Thermoplastic Eva imagwiritsidwa ntchito kwambiri ndi zomwe zimagwiritsidwa ntchito ndi 15% mpaka 46%, yokhala ndi mndandanda wa 0. 5 mpaka 4 ma grades. Eva ali ndi opanga ambiri, mitundu yambiri, njira zosiyanasiyana, mitengo yochepetsetsa, ogwiritsa ntchito okhaokha amangofunika kutsegula gawo la Eva, komwe mungasankhire pang'ono, mutha kusankha, kosavuta.
Eva ndi polydefin polymer, kuyambira kufewa komanso kugwiritsa ntchito magwiridwe antchito, ndi polyethylene (pe) chlorinyl chloride (pvc) zinthu ndizofanana. Koma kafukufuku wowonjezereka, mudzapeza eva ndi mitundu iwiri yonse yomwe ili pamwamba poyerekeza ndi ukulu wosasinthika.
2. 2 kukonzanso kuchita ntchito
Eva Mu gawo la khola lochokera ku chingwe cha voliyumu ndi yayikulu kwambiri yotchinga zinthu mkati ndi kunja kwa chiyambi, ndipo pambuyo pake idawonjezereka ku chotchinga chaulere. Mitundu iwiriyi yazinthu zopangira malingaliro imawonedwa kuti "zodzazidwa kwambiri": zakutchiretu chifukwa chofunikira kuwonjezera kaboni yayikulu ndi yowonjezera, matendawa adagwera kwambiri; Mafuta a Flamer Free Bowa amafunika kuwonjezera ulani yopumira ya halogen-fluunts, yemwenso akutulutsa mawu omasulira amakula kwambiri, matendawa adagwera kwambiri. Njira yothetsera vutoli ndikupeza policer yomwe imatha kukhala ndi Mlingo waukulu wazosefera, komanso amasungunuka otsika komanso madzi abwino. Pachifukwa ichi, Eva ndi chisankho chomwe amakonda.
Eva Sungunulani uku ndikusintha kwa kutentha kwanyengo ndi kuchuluka kwake kukulitsa kutentha msanga, wogwiritsa ntchitoyo amangofunika kusintha kutentha kwa expreser ndi kuthamanga kwa waya ndi zingwe. Mapulogalamu ambiri apanyumba ndi akunja akuwonetsa kuti, kwa osuta kwambiri otsika-free-free, chifukwa mawuwo ndi ochulukirapo, osungunuka ndi ochepa, kotero kuti agwiritse ntchito njira yochepetsetsa. Zipangizo za mphira zopangidwa ndi ma evarm zokhala ndi zodwala zimatha kungotaya ma extrone onse a rabara komanso cholinga chachikulu. Mavuto ophatikizira (olumikizira olumikizirana) amatha kuchitika ndi thermocochemical (peroxide) yolumikizirana kapena ndi elect elect exptortiation ilradiation Creatch.
2. 3 Yosavuta kusintha ndikusintha
Mawaya ndi zingwe zili paliponse, kuchokera kumwamba pansi, kuchokera kumapiri kupita kunyanja. Ogwiritsa ntchito waya ndi zingwe zofunika ndizosiyanasiyana komanso zachilendo, pomwe kapangidwe ka waya ndi chingwe ndizofanana, kusiyana kwake kumawonekera kuphitsa komanso kubisa zojambulajambula.
Pakadali pano, kunyumba ndi kunja, pvc yofewa ikadali ndi zigawenga zambiri za zida zogwiritsidwa ntchito mu malonda. Komabe, pozindikira kuteteza zachilengedwe ndi chitukuko chokhazikika.
Zipangizo za PVC zalephera kwambiri, asayansi akuchita chilichonse chotheka kupeza zinthu zina ku PVC, malo odalirika omwe ndi Eva.
Eva atha kuphatikizidwa ndi ma poizo osiyanasiyana, komanso ndi mitundu yosiyanasiyana ya michere ndi yolumikizira Edzi, zinthu zophatikizika zimatha kupangidwa mu pulasitiki ya matrmoplastic kuti zingwe za mphira. Opanga kupanga amatha kukhazikitsidwa ndi ogwiritsa ntchito (kapena muyezo), Eva monga maziko, kuti apange magwiridwe ake kuti akwaniritse zofunika.
3 Eva Kugwiritsa Ntchito
3. 1 Zogwiritsidwa ntchito ngati zinthu zotchinga zotchinga zotchinga zamphamvu kwambiri
Monga tonse tikudziwa, nkhani zazikulu za zinthu zotchinga zikuchititsa kuti carborth yakuda ikhale yakuda, chapansi cha pulasitiki kapena chowonjezera cha kaboni yakuda kwambiri ndikuwonjezera chakuda chazinthu zachilengedwe ndi mawonekedwe osalala. Pofuna kupewa kubweretsanso zingwe zam'madzi zam'madzi, zishango zamkati ndi zikopa zakunja ziyenera kukhala zowonda, zowala, zowala komanso yunifomu komanso yunifomu. Poyerekeza ndi ma polima ena, Eva amatha kuchita izi mosavuta. Cholinga cha izi ndikuti njira yopitilira m'matumbo imakhala yabwino kwambiri, yotuluka bwino, ndipo osafuna kubala. Zida zotchinga zimagawidwa m'magulu awiri: wokutidwa ndi wochititsa kunja uja amatchedwa chishango chamkati - ndi zophimba zamkati; wokutidwa ndi makulidwe kunja kwa Shield Shield - ndi zojambulazo zakunja; Zojambula zamkati zamkati ndizowoneka bwino kwambiri za thermoplastic ya thermoplastic ndipo nthawi zambiri imakhazikika pa eva yokhala ndi mawu a 18% mpaka 28%; Zojambulazo zakunja ndizolumikizidwa kwambiri ndi zolumikizidwa ndipo zimakhazikika ndipo nthawi zambiri zimakhazikika pa eva yokhala ndi ma vax mpaka 46%.
3. 2 marmoplastic komanso mtanda wolumikizidwa wamafuta okhazikika
Lard Lard Retarday Polyfin amagwiritsidwa ntchito kwambiri pazampani yovutayi, makamaka zofuna za halogen kapena zopatsa mphamvu za zingwe zamadzi, zingwe zamphamvu komanso mizere yomanga yayitali. Matenthedwe awo ogwiritsa ntchito nthawi yayitali kuyambira 70 mpaka 90 ° C.
Kwa zingwe zapakatikati komanso zamphamvu zamphamvu za 10 kV ndi pamwamba, zomwe zimakhala ndi zofunikira kwambiri pamagetsi, katundu wamoto wapamwamba kwambiri amatumizidwa ndi gawo lakunja. Mu malo ena okakamiza nyumba kapena ma projekiti amafunikira kuti mukhale ndi utsi wotsika, wosungunuka, wopanda pake kapena utsi wotsika komanso katundu wotsika, kotero kuti awiya wa thermoplastic realfin ndi yankho lothandiza.
Pazinthu zina zapadera, m'mimba mwake sizachikulu, kutentha kwa kutentha mu 105 ~ 150 ~ Kusamba kwamphamvu kwambiri kwa polsolefin. Kutentha kwake kwa nthawi yayitali kumagawidwa mu 105 一℃ ℃, 150 ℃, 150 ℃ mafayilo atatu, chomera chopanga chimatha kupangidwa molingana ndi zofunikira za ogwiritsa ntchito kapena miyezo yopanda mafuta.
Ndizodziwika bwino kuti ma polyfins ndi polar kapena polar polar pormrs. Monga momwe zimafanana ndi mafuta a mchere mu polarity, ma polyfins amatengedwa kuti samatha kusagwirizana ndi mafuta molingana ndi mfundo zofananira. Komabe, miyezo yambiri yamkati yolimbana nayo ikunenanso kuti kukanana ndi anthu ambiri kuyeneranso kukhala ndi kukana kwa mafuta, ma sol sols komanso ngakhale kwa mafuta osalala, asidi ndi alkalis. Izi ndizovuta kwa ofufuzawo, tsopano, kaya ngati ku China kapena kudziko lina, zinthu zolimbikitsazi zapangidwa, ndipo zida zake zapansi ndi Eva.
3. 3 Zotchinga zotchinga
Zingwe zopendekera zokhala ndi zinthu zambiri zimakhala ndi zongosiya pakati pa ziweto zomwe zikufunika kudzazidwa kuti zitsimikizire mawonekedwe owoneka bwino, ngati kudzazidwa mkati mwa msambo wakunja kumapangidwa ndi zotchinga zamafuta osefukira. Zotsitsa zodzaza izi zimachitika ngati chotchinga (okosijeni) pomwe chingwe chikuyaka ndipo chimadziwika kuti "chotchinga cha okosijeni" m'makampani.
Zofunikira zoyambira zotchinga zotchinga za oxygen ndizo:
Chotchinga cha oxegen ichi chagwiritsidwa ntchito kwambiri mu malonda ochulukirapo kwa zaka zoposa khumi ndipo zadzetsa kusintha kwakukulu mu lawi loletsedwa kumbuyo kwa zingwe. Chotchinga cha oxsigen chitha kugwiritsidwa ntchito kwa zingwe za Flamen-Retarday komanso zingwe zopanda pake-nthonda (mwachitsanzo PVC). Kuchuluka kwa zoyeserera kwawonetsa kuti zingwe zokhala ndi zotchinga za oxygen zimatha kudutsa zowotcha imodzi yoyaka ndi mayeso owotcha.
Kuchokera pakuwona kwa mawonekedwe a zinthu zakuthupi, zinthu zotchinga za oxygen ndizofalikira, chifukwa zimakwaniritsa mtengo wokwera, kuti akwaniritse zabwino kwambiri (o) 2 kapena al (o) 3 kapena al (o) 3 kapena al (o)
3. 4 Zosinthidwa
Zida za polyethylene zopindika zimakonda kukumana ndi mavuto awiri: Choyamba, amakonda kusungunuka (mwachitsanzo Sharkskin) pakumwa; Kachiwiri, amakonda kupsinjika kwachilengedwe. Njira yosavuta kwambiri ndikuwonjezera gawo lina la Eva mu mawonekedwe. Ntchito ngati eva yosinthidwa makamaka pogwiritsa ntchito mtundu wa kalasiyo, mndandanda wake wosungunuka pakati pa 1 mpaka 2 ndi woyenera.
4. Chiyembekezo cha chitukuko
. Makamaka m'zaka khumi zapitazi, chifukwa cha kufunika kwa kutetezedwa kwa chilengedwe, mafuta osokoneza bongo achitika, ndipo anasinthana ndi luso la PVC. Ntchito yake yabwino kwambiri komanso magwiridwe antchito abwino kwambiri otamanda ndizovuta kusintha zinthu zina.
. Mwachitsanzo, kuchuluka kwakukulu kwa nthongo ya halogen-fluunt romant, chisankho chachikulu cha VA / Mi = 28 ~ 3 a Eva 26 Ndipo mtundu wonenepa uyu wa Eva mpaka pano palibe opanga nyumba kuti apange ndi kuperekera. Osanenapo za VA zomwe zili pamwamba pa 28, ndipo kusungunuka penti osakwana 3 mwa kupanga ena.
. Zoposa 50% ya VA yokhala ndi mtundu wa mphira, ndi kampani yakunja yolamulidwa, ndipo mtengo wake ndi wofanana ndi wa VA wa Brand 2 mpaka katatu. Mitengo yosiyanasiyanayi imakhudzanso kuchuluka kwa mtundu wa mphira evm, kotero kukangana kwa cakani kumayitanitsa opanga eva, kukonza kuchuluka kwa Eva. Kupanga kwapachilengedwe kwakhala kugwiritsa ntchito kwambiri Eva.
. Kugwiritsa ntchito Eva kukukulira pamlingo wa 15% pachaka ndipo malingaliro ake ndi abwino kwambiri. Kuchuluka ndi kuchuluka kwa zida zotetezedwa ndi mphamvu zapakatikati komanso zazitali zamphamvu zopangira ndikukula, pafupifupi 8% mpaka 10% pakati; Kukana polalefin kukukula mwachangu, m'zaka zaposachedwa kwakhalabe pa 15% mpaka 20% pakati, komanso mwa zaka 5 mpaka 10, kungapitirizenso kuchuluka kwa zaka 5, atha kukhalabe ndi mtengo wokulirapo.
Post Nthawi: Jul-31-2022