Tanthauzo la HDPE
HDPE ndi chidule chomwe chimagwiritsidwa ntchito kwambiri pofotokoza polyethylene yochuluka kwambiri. Timalankhulanso za mbale za PE, LDPE kapena PE-HD. Polyethylene ndi zinthu zopangidwa ndi thermoplastic zomwe ndi gawo la banja la mapulasitiki.
Pali mitundu yosiyanasiyana ya ma polyethylene. Kusiyana kumeneku kumafotokozedwa ndi njira yopangira yomwe imasiyana. Tikukamba za polyethylene:
• kuchepa kwa kachulukidwe (LDPE)
• kuchulukana kwambiri (HDPE)
• kuchulukana kwapakati (PEMD).
Kuphatikiza apo, palinso mitundu ina ya polyethylene: chlorinated (PE-C), yokhala ndi kulemera kwakukulu kwa mamolekyulu.
Zidule zonsezi ndi mitundu ya zipangizozi zimayikidwa motsatira muyezo wa NF EN ISO 1043-1.
HDPE ndi zotsatira zenizeni za njira yochulukirachulukira: Polyethylene Yochuluka Kwambiri. Ndi iyo, titha kupanga zoseweretsa za ana, matumba apulasitiki, komanso mapaipi ogwiritsira ntchito kunyamula madzi!
Pulasitiki ya HDPE imapangidwa kuchokera ku mafuta opangidwa. Pakupanga kwake, HDPE imafuna njira zosiyanasiyana:
• kusungunuka
• kusweka kwa nthunzi
• kupolima
• kusungunuka kwa granulation
Pambuyo pa kusinthaku, chinthucho chimakhala choyera ngati mkaka, chowala. Kenako chimakhala chosavuta kuchipanga kapena kuchipaka utoto.
Kugwiritsa ntchito HDPE m'makampani
Chifukwa cha ubwino ndi ubwino wake, HDPE imagwiritsidwa ntchito m'magawo ambiri amakampani.
Zimapezeka paliponse pozungulira ife m'miyoyo yathu ya tsiku ndi tsiku. Nazi zitsanzo zina:
Kupanga mabotolo apulasitiki ndi ma phukusi apulasitiki
HDPE imadziwika bwino m'makampani opanga chakudya, makamaka popanga mabotolo apulasitiki.
Ndi chidebe chabwino kwambiri chosungiramo chakudya kapena zakumwa kapena chopangira zivundikiro za mabotolo. Palibe chiopsezo choti chingasweke chifukwa chingakhalepo ndi galasi.
Kuphatikiza apo, ma CD a pulasitiki a HDPE ali ndi ubwino waukulu woti akhoza kubwezeretsedwanso.
Kupatula makampani opanga chakudya, HDPE imapezeka m'magawo ena amakampani ambiri:
• kupanga zoseweretsa,
• zotetezera zapulasitiki za mabuku olembera,
• mabokosi osungiramo zinthu
• popanga mabwato ndi kayak
• kupanga ma beacon buoys
• ndi ena ambiri!
HDPE mumakampani opanga mankhwala ndi mankhwala
Makampani opanga mankhwala ndi mankhwala amagwiritsa ntchito HDPE chifukwa ili ndi mphamvu zotsutsana ndi mankhwala. Amati ndi yopanda mankhwala.
Chifukwa chake, chidzakhala ngati chidebe:
• za shampu
• Zinthu zapakhomo ziyenera kugwiritsidwa ntchito mosamala
•kutsuka
• mafuta a injini
Amagwiritsidwanso ntchito popanga mabotolo a mankhwala.
Kuphatikiza apo, tikuwona kuti mabotolo opangidwa ndi polypropylene ndi amphamvu kwambiri pakusunga zinthu zawo akakhala ndi utoto kapena utoto.
HDPE yamakampani omanga ndi kuyendetsa madzi
Pomaliza, gawo lina lomwe limagwiritsa ntchito kwambiri HDPE ndi gawo la mapaipi ndi gawo lomanga nyumba zambiri.
Akatswiri a ukhondo kapena zomangamanga amagwiritsa ntchito izi popanga ndi kukhazikitsa mapaipi omwe azigwiritsidwa ntchito poyendetsa madzi (madzi, gasi).
Kuyambira m'zaka za m'ma 1950, mapaipi a HDPE alowa m'malo mwa mapaipi a lead. Mapaipi a lead analetsedwa pang'onopang'ono chifukwa cha poizoni wake ku madzi akumwa.
Chitoliro cha polyethylene (HDPE) cholimba kwambiri, kumbali ina, ndi chitoliro chomwe chimapangitsa kuti madzi akumwa azigawidwa: ndi chimodzi mwa mapaipi omwe amagwiritsidwa ntchito kwambiri pantchito yopereka madzi akumwa iyi.
HDPE imapereka ubwino wokana kusintha kwa kutentha kwa madzi mu chitoliro, mosiyana ndi LDPE (polyethylene yotsika). Kuti tigawire madzi otentha pa madigiri opitilira 60, timakonda kugwiritsa ntchito mapaipi a PERT (polyethylene yokana kutentha).
HDPE imathandizanso kunyamula mpweya ndi chubu, kupanga ma ducts kapena zinthu zopumira mpweya mnyumbamo.
Ubwino ndi kuipa kogwiritsa ntchito HDPE m'malo opangira mafakitale
N’chifukwa chiyani HDPE imagwiritsidwa ntchito mosavuta m’malo opangira mapaipi a mafakitale? Ndipo m’malo mwake, kodi ndi zinthu ziti zoipa zomwe ingakhale nazo?
Ubwino wa HDPE ngati chinthu
HDPE ndi chinthu chomwe chili ndi zinthu zingapo zabwino zomwe zimapangitsa kuti chigwiritsidwe ntchito m'makampani kapena m'mapaipi.
HDPE ndi chinthu chotsika mtengo chifukwa cha khalidwe labwino kwambiri. Ndi cholimba kwambiri (chosasweka) ngakhale chitakhala chopepuka.
Imatha kupirira kutentha kosiyanasiyana kutengera momwe imapangira (kutentha kotsika ndi kokwera: kuyambira -30 °C mpaka +100 °C) ndipo pomaliza pake imalimbana ndi ma asidi ambiri osungunulira omwe ingakhale nawo popanda kuwonongeka.
Tiyeni tifotokoze zina mwa zabwino zake:
HDPE: chinthu chosavuta kugwiritsa ntchito
Chifukwa cha njira yopangira yomwe imapanga HDPE, HDPE imapirira kutentha kwambiri.
Pa nthawi yopanga, ikafika posungunuka, zinthuzo zimatha kukhala ndi mawonekedwe apadera ndikusinthasintha malinga ndi zosowa za opanga: kaya kupanga mabotolo azinthu zapakhomo kapena kupereka mapaipi amadzi omwe amatha kupirira kutentha kwambiri.
Ichi ndichifukwa chake mapaipi a PE ndi olimba ku dzimbiri ndipo amalimbana ndi zinthu zambiri zomwe zimayambitsa matenda.
HDPE ndi yolimba kwambiri komanso yosalowa madzi
Ubwino wina, makamaka HDPE, ndi wotsutsa kwambiri!
• HDPE imalimbana ndi dzimbiri: motero mapaipi omwe amanyamula madzi amphamvu sadzawonongeka ndi dzimbiri. Sipadzakhala kusintha kwa makulidwe a mapaipi kapena mtundu wa zolumikizira pakapita nthawi.
• Kukana nthaka yolimba: mofananamo, ngati nthaka ili ndi asidi ndipo payipi yakwiriridwa, mawonekedwe ake sangasinthidwe.
• HDPE imalimbananso kwambiri ndi kugwedezeka kwakunja komwe kungachitike: mphamvu yomwe imaperekedwa panthawi ya kugwedezeka imayambitsa kusintha kwa gawolo m'malo mowonongeka. Mofananamo, chiopsezo cha nyundo yamadzi chimachepa kwambiri ndi HDPE.
Mapaipi a HDPE ndi osalowa madzi: kaya ndi madzi kapena mpweya. Ndi muyezo wa NF EN 1610 womwe umalola mwachitsanzo kuyesa kulimba kwa chubu.
Pomaliza, ikakhala yakuda, HDPE imatha kupirira UV
HDPE ndi yopepuka koma yamphamvu
Pa malo opangira mapaipi a mafakitale, kupepuka kwa HDPE ndi ubwino wosatsutsika: mapaipi a HDPE ndi osavuta kunyamula, kusuntha kapena kusunga.
Mwachitsanzo, Polypropylene, mita imodzi ya chitoliro chokhala ndi mainchesi osakwana 300, kulemera kwake:
• 5 kg mu HDPE
• Chitsulo chopangidwa ndi chitsulo cholemera makilogalamu 66
• Konkireti ya makilogalamu 150
Ndipotu, pogwiritsira ntchito mapaipi a HDPE nthawi zambiri, kuyika mapaipi a HDPE kumakhala kosavuta ndipo kumafuna zida zopepuka.
Chitoliro cha HDPE chilinso cholimba, chifukwa chimatenga nthawi yayitali chifukwa nthawi yake yogwira ntchito imatha kukhala yayitali kwambiri (makamaka HDPE 100).
Moyo wa chitolirochi udzadalira zinthu zosiyanasiyana: kukula, kuthamanga kwa mkati kapena kutentha kwa madzi omwe ali mkati. Tikukamba za zaka 50 mpaka 100 za moyo wautali.
Zoyipa zogwiritsa ntchito polyethylene yochuluka kwambiri pamalo omanga
M'malo mwake, kuipa kogwiritsa ntchito chitoliro cha HDPE kuliponso.
Mwachitsanzo, tinganene kuti:
• Mikhalidwe yokhazikitsira pamalo omangira iyenera kukhala yosamala kwambiri: kuigwiritsa ntchito molakwika kungakhale koopsa
• Sizotheka kugwiritsa ntchito gluing kapena screwing polumikiza mapaipi awiri a HDPE
• Pali chiopsezo cha kupangika kwa mapaipi polumikizana ndi mapaipi awiri.
• HDPE imayamwa mawu kwambiri kuposa zinthu zina (monga chitsulo chosungunuka), zomwe zimakhala zovuta kuzizindikira.
• motero kuyang'anira kutuluka kwa madzi. Njira zodula kwambiri zimagwiritsidwa ntchito poyang'anira netiweki (njira za hydrophone)
• Kukulitsa kutentha n'kofunika ndi HDPE: chitoliro chingasinthe kutengera kutentha
• Ndikofunikira kulemekeza kutentha kwakukulu kogwirira ntchito malinga ndi makhalidwe a HDPE
Nthawi yotumizira: Sep-11-2022