Nguva yekutanga PVC yakawanikwa yaive netsaona muna 1872 neGerman chemist, Eugen Baumann.Yakagadzirwa seflask yevinyl chloride yakasiiwa yakavhenekerwa nechiedza chezuva kwayakaita polymer.
Mukupera kwema1800s boka revamuzvinabhizinesi vekuGermany rakasarudza kuisa mari nekugadzira yakawanda yeAcetylene, inoshandiswa semafuta mumarambi.Mukufanana zvigadziriso zvemagetsi zvakawedzera kushanda uye munguva pfupi zvakapfuura musika.Neiyi Acetylene yaiwanikwa yakawanda uye yakaderera mumutengo.
Muna 1912 mumwe muongorori wemakemikari wokuGermany, Fritz Klatte, akaedza chinhu chacho ndokuchiita nehydrochloric acid (HCl).Izvi zvinogadzira vinyl chloride uye isina chinangwa chakajeka chaakasiya pasherufu.Iyo vinyl chloride yakaita polymer nekufamba kwenguva, Klatte aive nekambani yaaishandira, Greisheim Electron, kuti aite patent.Havana kuwana chero kushandiswa kwayo uye patent yakapera muna 1925.
Akazvimirira mumwe kemisiti muAmerica, Waldo Semon anoshanda kuBF Goodrich, aiwana PVC.Akaona kuti yaigona kunge iri material chaiyo yekugeza maketeni vakabva vanyora patent.Imwe yeakakosha maficha yaive yekudzivirira mvura iyo yakatungamira kune akawanda akawanda ekushandisa makesi uye PVC yakakurumidza kukura mumugove wemusika.
Chii chinonzi PVC granule uye inoshandiswa kupi?
PVC chinhu chakasvibirira chisingagone kugadziriswa chega kana chichienzaniswa nezvimwe zvinhu zvakabikwa.PVC granules makomisheni akavakirwa pakubatanidzwa kwepolymer uye zvinowedzera zvinopa kuumbwa kunodiwa pakupera-kushandiswa.
Kokorodzano mukurekodha iyo yekuwedzera yekuwedzera yakavakirwa pazvikamu pazana rePVC resin (phr).Mushonga wacho unogadzirwa nekunyatso kusanganisa pamwe chete zvigadzirwa, izvo zvinozoshandurwa kuita gelled chinyorwa pasi pesimba rekupisa (uye shear).
Mishonga yePVC inogona kugadzirwa, uchishandisa mapurasitiki, kuita zvinhu zvinochinjika, zvinowanzonzi P-PVC.PVC dzakapfava kana kuchinjika dzinonyanya kushandiswa mushangu, indasitiri yetambo, pasi, hosi, toyi uye kugadzira magirovhosi.
Mishonga isina plasticizer yekuomarara kunyorera inosarudzwa U-PVC.Rigid PVC inonyanya kushandiswa kune mapaipi, mafafitera profiles, madziro anovhara, nezvimwe.
PVC makomisheni ari nyore kugadzira kuburikidza nejekiseni kuumba, extrusion, kuvhuvhuta kuumbwa uye kudhirowa kwakadzika.INPVC vakagadzira anochinjika PVC makomisheni ane yakanyanya kuyerera, akanakira kuumbwa kwejekiseni, pamwe neakanyanya viscous mamakisi e extrusion.
Nguva yekutumira: Jun-21-2021
