Kodi PP granulation ndi chiyani? Njira yopangira ufa?

Kusakaniza kwa pulasitiki ndi kuswa zinthu zotayidwa za pulasitiki kenako nkuzitentha ndi kuzisungunula kukhala tinthu tating'onoting'ono, kukula kwake ndi nyemba zofanana, kuti mugwiritse ntchito tinthu ta pulasitikiti popanga zinthu zatsopano za pulasitiki, izi zimatchedwa kusakaniza. Kodi PP granulation ndi chiyani? Njira yosakaniza ufa?

PP ndi code ya Chingerezi ya polypropylene, PP granulation imatanthauza zinthu zapulasitiki za polypropylene (makamaka matumba opangidwa ndi pulasitiki) pambuyo pobwezeretsanso, kuyeretsa,pulasitiki extruderTinthu ta pulasitiki ta polypropylene tomwe timapangidwanso pulasitiki, tingasakanizidwe kukhala zinthu zatsopano za polypropylene kuti tigwiritse ntchito kapena kugwiritsidwa ntchito mwachindunji tokha.

Pakadali pano, ukadaulo wochizira ufa umagawidwa m'magulu awiri: granulation yonyowa, granulation yowira, pressure molding, spray ndi dispersive mist, hot melting molding ndi zina zotero.

1. Njira yonyowa ya granulation
Kunyowa kwa granulation ndi kulowetsa madzi kapena chogwirira mu ufa wosalala wolimba ndikuwusakaniza moyenera, kuti madzi ndi ufa wosalala wolimba zigwirizane, ndikupanga mphamvu yogwirizana ndikupanga magulu.

2. Njira yowiritsa granulation
Njira yowiritsira granulation ndikugwiritsa ntchito mphepo yochokera pansi pa chipangizocho kuti inyamule tinthu ta ufa ndi mfuti yopopera yapamwamba kuchokera mu slurry mutakhudzana kwathunthu ndikusakanikirana kukhala tinthu tating'onoting'ono.

3. Njira yopangira kupanikizika
Njira yopangira kupanikizika ndi kuchepetsa ufa wokhuthala pamalo enaake, ndikuupanikiza kuti ukhale wokhuthala pogwiritsa ntchito mphamvu yakunja. Malinga ndi dongosolo la mphamvu yakunja yomwe imagwiritsidwa ntchito, njira yopangira kupanikizika ingagawidwe m'magulu awiri, ndiko kuti, njira yopangira ndi njira yotulutsira.

4. Njira yopopera ndi kufalitsa nthunzi
Utsi wopopera ndi wobalalitsa umagwiritsidwa ntchito kupanga zinthu zamadzimadzi kapena theka-madzimadzi zomwe zili mumkhalidwe wobalalitsa kwambiri kukhala tinthu tolimba mwachindunji muzipangizo zinazake.

5. Njira yopangira kusungunuka kotentha
Njira yotenthetsera kusungunula kutentha ndikugwiritsa ntchito mawonekedwe otsika a chinthucho (nthawi zambiri osakwana 300℃), chomwe chimasungunuka, kudzera mu condensation yapadera, kuti condensation yake ipangike kukhala mawonekedwe ofunikira a pepala, mzere, chipika, hemispherical ndi zina zotero.

Kuyika ufa mu ufa ndi njira yomwe imakhudzidwa ndi zinthu zambiri; kusankha ukadaulo woyenera wa kuyika ufa mu ufa kuyenera kuganizira zinthu zambiri:

1. Makhalidwe a zipangizo zopangira

2. Zofunikira pakugwiritsa ntchito mphamvu
Mphamvu ya nthawi ya chipangizo cha njira zosiyanasiyana zoyeretsera granulation imasiyana kwambiri, kotero ndalama zomwe zimagwiritsidwa ntchito komanso zomwe zimagwiritsidwa ntchito pokonza ziyenera kuganiziridwa.

3. Kugawa kwa tinthu tating'onoting'ono ta zinthu
Kukula kwa tinthu tating'onoting'ono ta zinthu zomwe zimapezeka pogwiritsa ntchito njira zosiyanasiyana zopukutira timasiyana kwambiri, monga kukula kwa tinthu tating'onoting'ono ta granulation yopopera, pomwe kukula kwa tinthu ta zinthu zopukutira timating'onoting'ono ta granulation kumatha kukhala kwakukulu, kotero njira yopukutira timating'onoting'ono iyenera kusankhidwa malinga ndi njira yopukutira timating'onoting'ono yomwe ikufunika.

4. Mawonekedwe a tinthu tating'onoting'ono ta chinthu
Zinthu zomwe zimapezeka posakaniza granulation ndi fluidization granulation ndi tinthu tozungulira tokhala ndi mawonekedwe osasinthasintha. Kugubuduzika kukhala mpira kumatha kukhala ndi bwalo losalala; Pa tinthu tokhazikika tokhala ndi mawonekedwe apadera, ndikofunikira kugwiritsa ntchito compression ndi extrusion granulation. Kusankha kapangidwe ka tinthu tating'onoting'ono kuyenera kuganizira zofunikira ndi kusavuta kwa njira zotsatirazi.

5. Mphamvu ya tinthu tating'onoting'ono ta chinthu
Njira youma mosakayikira imabweretsa fumbi ndipo motero siyoyenera kusungunuka kwa ufa woopsa kapena woopsa. Njira yonyowa, kumbali ina, imafuna kuumitsa pambuyo pa kusungunuka ndipo imawononga zina mwa zosungunulira. Mankhwala ena sakhudzana ndi madzi, kapena kubwezeretsanso kupanga zinthu zina panthawi yowuma, zomwe sizoyenera kusungunuka.

6. Zosankha zouma/zonyowa

7. Kuchuluka kwa tinthu ta zinthu zomwe zili m'mimba ndi m'mimba
Tinthu tating'onoting'ono tomwe timapanga tinthu tating'onoting'ono ndi kachulukidwe ka tinthu tating'onoting'ono m'zizindikiro ziwirizi zimakhudzanso mphamvu ya chinthucho, monga momwe zimagwiritsidwira ntchito popanga tinthu tating'onoting'ono tomwe timapanga tinthu tating'onoting'ono, tinthu tating'onoting'ono tomwe timapanga ...