O mea e lua e faia i le mea lava e tasi, ae o le tele o mea e eseese, o le tulaga faʻapipiʻi e vaivai i le tasi itu ma faigata i le isi.
PVC taga palasitika
O le lanu masani e samasama translucent ma iila.E sili atu le manino nai lo polyethylene ma polypropylene, ae itiiti ifo nai lo polystyrene.Faʻalagolago i le aofaʻi o faʻaopoopoga, e mafai ona vaevaeina i le malu ma le malosi polyvinyl chloride.O oloa vaivai e iai le fetuutuunai, faigata ma le pipii.O le maaa o oloa faigata o le polyethylene maualalo, ae afai e maualalo ifo nai lo le polypropylene, o le a tupu le paʻepaʻe i le piʻo.O mea masani: ipu, paipa, alo, meataalo, faitoto'a ma faamalama, fa'alava uaea, mea tusi, ma isi mea. O se mea polymer e fa'aoga chlorine atoms nai lo hydrogen atoms i polyethylene.
Vailaau Fa'aletino ma Mea Fa'aletino o le PVC (Polyvinyl Chloride) Hard PVC o se tasi lea o mea fa'apipi'i fa'aoga lautele.PVC mea o se mea amorphous.I le faʻaaogaina moni o mea PVC, faʻamautu, lubricants, togafitiga fesoasoani, pigments, impactors ma isi faʻaopoopoga e masani ona faʻaopoopoina [2].
O mea PVC e le mafai ona mu, malosi, fa'afefe tau ma e sili ona lelei le mautu fa'atusa.O le PVC e matua tetee atu i mea faʻamaʻi faʻamaʻi, faʻaitiitia mea faʻaitiitia ma malosi malosi.Ae ui i lea, e mafai ona pala e ala i vailaʻau faʻamaʻi faʻamaʻi e pei ole sulfuric acid faʻamaʻi ma faʻamaʻi nitric acid, ma e le talafeagai mo le faʻafesoʻotaʻi ma mea manogi poʻo chlorinated hydrocarbons.
O le faʻafefeteina o le PVC i le taimi o le gaosiga o se faʻasologa taua tele.Afai e le talafeagai lenei parakalafa, o le a tupu faʻafitauli faʻaleagaina meafaitino.Ole tafega ole PVC e matua leaga lava ma o lona faagasologa e vaapiapi tele.E masani ona faʻaaogaina mea PVC mole mole mamafa, aemaise lava ona o mea PVC maualuga mole mole mamafa e faigata ona faʻaogaina (o lenei ituaiga o mea e masani ona manaʻomia le faʻaopoopoga o lubricants e faʻaleleia ai meatotino tafe).Ole fua ole pa'u ole PVC e matua maualalo, masani 0.2-0.6%.
Taimi meli: Oke-20-2021
