Zinthu zingapo zomwe zimakhudza pulasitiki ya PVC

Plasticization imatanthawuza kugubuduza kapena kutulutsa mphira yaiwisi kuti ipititse patsogolo ductility, flowability, ndi zinthu zina, kuti zithandizire kukonza kotsatira monga kuumba.

1. Zosintha:

Pansi yachibadwa processing zinthu, ndi plasticization mlingo wa PVC utomoni ukuwonjezeka ndi kuwonjezeka processing kutentha ndi kukameta ubweya mlingo. Kukwera kwa kutentha kwa ntchito, kumapangitsa kusiyana kwa kutentha, komanso kutentha kwachangu. Chifukwa PVC kukhala wochititsa osauka kutentha, kuwonjezeka kukameta ubweya liwiro imathandizira frictional kutentha m'badwo pakati pa zipangizo, komanso pafupipafupi kukhudzana pakati zipangizo ndi zipangizo, potero kusintha kutentha kuwombola Mwachangu.

2. Mapangidwe a utomoni:

Kutentha kwa kusintha kwa galasi ndi kusungunuka kwa PVC kumawonjezeka ndi kuwonjezeka kwa kulemera kwa maselo ndi crystallinity, ndipo digiri ya pulasitiki ya PVC imakhalanso yovuta.

3: Zinthu za formula

Kugwiritsiridwa ntchito kwa mafuta, mapulasitiki, zothandizira zothandizira, zosintha zowonongeka, zodzaza, zotsitsimutsa, ndi zina zotero mu ndondomeko ya PVC yopangira zinthu zimakhudza kwambiri katundu wa PVC plasticization. Zachidziwikire, magawo osiyanasiyana ali ndi njira zosiyanasiyana komanso magawo amakhudzidwa ndi zinthu zapulasitiki za PVC chifukwa chamitundu yosiyanasiyana yogwiritsira ntchito.

4. Kusakaniza ndi kukonza ndondomeko

Kusakaniza ndi njira ya homogenizing PVC utomoni ndi zina monga kutentha stabilizers, modifiers, lubricant, fillers, ndi inki. Chida chachikulu chomwe chimagwiritsidwa ntchito ndi makina okanda othamanga kwambiri komanso chosakaniza chozizirira. The kusanganikirana ndondomeko amadalira mikangano ndi kukameta ubweya wa mphamvu kwaiye mawotchi mphamvu pa zinthu kuyenga ndi kutenthetsa zinthu, kusungunula zina ndi ❖ kuyanika pamwamba PVC utomoni. PVC utomoni woyengedwa pansi kukameta ubweya ndi kukangana, ndipo pamwamba pake amaoneka ofewa ndi porous pansi kutentha. Wothandizira wothandizira ndi adsorbed padziko ndi kufika homogenization. Kutentha kumawonjezeka, ndipo pamwamba pa tinthu tating'onoting'ono timasungunuka, zomwe zimapangitsa kuti tinthu tichuluke kwambiri.