Pet (polyethylene terephthalate)
Kuyanika ndi kupindika pamaso pa jakisoni wokumba
Iyenera kuyimitsidwa musanawume. Chiweto chimakonda kwambiri hydrolysis. Kuwuma kwachilengedwe kwa mpweya ndi 120-165 c (248-329 f) kwa maola 4. Zomera zinyezi ziyenera kukhala zosakwana 0,02%.
Khalani ndi malo ophera nyama, nthawi yopuma imangofunika 15min. Sungani mphamvu yotsika pafupifupi 45-50%. Zolemba chinyezi zimatha kukhala 50-70ppm. (Kutentha kouma, nthawi yowuma kumatha kusinthidwa ndi kufunikira kwa makasitomala pazinthu zowuma, kachitidwe kanthawi zonse kumayendetsedwa ndi SELC). Ndipo ndikusintha ndi kuyanika & chowuma nthawi.
Kutentha kutentha
265-280 c (509-536 f) kwa maphunziro osakwaniritsidwa
275-290 c (527-554 f) kwa glass yolimbikitsidwa
Kutentha kwamphamvu
80-120 c (176-248 f); Kukonda Kwambiri: 100-110 c (212-230 f)
Kupanikizika kwa zinthu zakuthupi
30-130 MPA
Kuthamanga kwa jekeseni
Kuthamanga kwambiri popanda kuyambitsa
Makina Opanga jakisoni:
Kuumba jakisoni kumagwiritsidwa ntchito kumawonjezera kuwumba kwa chiweto. Nthawi zambiri, chiweto chimatha kupangidwa ndi makina opanga jakisoni.
Ndikofunika kusankha cholembera chosinthika ndi mphete yosinthira pamwamba, yomwe ili ndi mphamvu yayikulu ndikulimbana, ndipo gawo limodzi la 3: 1.
Zipangizo zokhala ndi L / D Khalani mu mbiya kwa nthawi yayitali, ndipo kutentha kwambiri kumatha kuyambitsa kuchepa komanso kumakhudza ntchito. Chiwerengero chosokoneza kwambiri chikhale chochepa kwambiri kuti mupange kutentha pang'ono, ndikosavuta kupukuta, ndikukhala ndi magwiridwe antchito. Kumbali inayi, kuphwanya kwa ulusi wagalasi kudzakhala kochulukirapo ndipo makina opanga zifaniziro achepetsedwa. Chiweto chagalasi chikachimaliro chikalimbikitsidwa, khoma lamkati la mbiya limavalidwa kwambiri, ndipo mbiya imapangidwa ndi zinthu zosagonjetseka kapena kuvala zovala zosavuta.
Popeza mphuno siyifupi, khoma lamkati liyenera kukhala pansi ndipo ziphuphu ziyenera kukhala zazikulu. Msozi wa Hydraulic Brand Valve Valve Valve Valve Valve View. Ma nozzles ayenera kukhala ndi zotchinga ndi kutentha mphamvu kuti zitsimikizire kuti nozzles sizimazizira ndikutseka. Komabe, kutentha kwa phokoso sikuyenera kukhala zazitali kwambiri, apo ayi kumayambitsa zodutsa. Zinthu zotsika kwambiri za PP ziyenera kugwiritsidwa ntchito ndipo mbiya yotsukidwa musanayambe kupanga.
Mikhalidwe yayikulu ya jakisoni kwa chiweto
1, kutentha kwa mbiya.Kutentha kwa nkhungu kumakhala kocheperako, ndipo matenthedwe amakhudza mwachindunji magwiridwe antchito. Ngati kutentha kumakhala kotsika kwambiri, sikwabwino kumasula zigawo zapulasitiki, ma dents, ndi kusowa kwa zolakwika zakuthupi; M'malo mwake, ngati matenthedwewo ndi okwera kwambiri, adzafalikira, modabwitsa, mitundu idzayamba kumdima, mphamvu yamakina idzachepa, ndipo kuchepa kwachitika. Nthawi zambiri, kutentha kwa ziphuphu kumayendetsedwa nthawi ya 240 mpaka 280 ° C, ndipo minyewa ya mitsuko yofiyira minyewa sikuyenera kupitirira 300 ° C.
2, kutentha kwaunga.Kutentha kwa nkhungu kumakhudza kuchuluka kwa nthawi yozizira komanso malembikiti osungunuka, makristalnity ndi osiyana, ndipo zinthu za pulasitiki ndizosiyananso. Nthawi zambiri, kutentha kwa mkunga kumayendetsedwa ku 100 mpaka 140 ° C. Mitengo yaying'ono imalimbikitsidwa mukamapanga zigawo zapansi zocheperako. Mukamapanga ziwalo zagolidi wathambo, tikulimbikitsidwa kukhala ndi mtengo wokulirapo.
3. Kupanikizika kwa jakisoni.Mafuta amasungunuka ndi madzimadzi komanso osavuta kupanga. Nthawi zambiri, kupanikizika kwapakatikati kumagwiritsidwa ntchito, kukakamizidwa ndi 80 mpaka 140 MPA, ndipo chiweto cholimbitsa chiberekero chimapanikizika cha 90 mpaka 150 mpa. Maganizo a jekeseniyo uyenera kutsimikizika poganizira za ufawo, mtundu ndi kuchuluka kwa zosefera, malo ndi kukula kwa gawo la pulasitiki, kutentha kwa makina owumbira, komanso makina owumba jakisoni.
Kodi mukudziwa zochuluka motani ponena za kukonza ma pulasitiki?
1, pokonza pulasitiki
Popeza chiweto cha Pet Macromolecles muli maziko a lipid ndikukhala ndi hydrophilicity, tinthu tating'onoting'ono timakhudzidwa ndi madzi pamtundu wambiri. Pamene chinyontho chiposa malirewo, kutukwana kwa ziweto kumachepa, ndipo zopangidwazo zimakhala zautoto ndipo zimakhala zopanda pake. Pankhaniyi, zinthuzo ziyenera kuwuma musanakonzedwe. Kutentha kouma ndi maola 150 4, nthawi zambiri maola 17 mpaka 4. Njira ya ndege ya ndege imagwiritsidwa ntchito poyesa ngati katunduyo wawuma kwathunthu.
2. Kusankhidwa kwa makina opanga jakisoni
Pet ili ndi mfundo yochepa yosungunuka komanso malo okwanira, motero ndikofunikira kusankha makina a jekeseni pang'ono ndi kuwongolera mapiko, ndipo kulemera kwenikweni kwa malonda sikungakhale kochepera 2/3. Kuchuluka kwa jakisoni wamakina. Kutengera ndi zofunikirazi, m'zaka zaposachedwa, Ramada adapanga mndandanda wambiri zazing'ono komanso zapakatikati. Mphamvu yosankhidwa ndi yayikulu kuposa 6300t / m2.
3. Ndondomeko ndi kapangidwe ka pachipata
Ma stafforforms amapangidwa ndi othamanga othamanga. Chishango cha kutentha pakati pa nkhungu ndi makina owumba jakisoni amapezeka kwambiri ndi makulidwe 12 mm, ndipo chishango cha kutentha chimatha kupirira zopsinjika kwambiri. Doko lotulutsidwa liyenera kukhala lokwanira kuti mupewe kutentha kwanu kapena kupukutira kwa doko lothana ndi madoko omwe sapitirira 0.03 mm, mwinanso kung'ambika ndikosavuta.
4. Kutentha kwa kutentha
Kuyeza kumatha kuchitidwa ndi njira ya ndege. Ali 270
5. Kuthamanga kwa jekeseni
Kuthamanga kwakukulu kwa jakisoni kumakhala kwachangu kwambiri, komwe kumalepheretsa jakisoni wa jakisoni. Koma mwachangu kwambiri, kuchuluka kwa mphezi kumapangitsa kuti malowedwe azikhala bwino. Popup nthawi zambiri imamalizidwa m'masekondi 4.
6, kupanikizika kumbuyo
Kutsitsa kwabwinoko, kuti musavale. Osapitilira 100Bar.
Post Nthawi: Feb-24-2022