Amakuru

Mu myaka yashize, hariho sisitemu nyinshi zo gukuramo ibicuruzwa zashyizweho ku isoko mu rwego rwo gusimbuza Ingaragu - gusohora imashini hamwe na sisitemu yo gukama mbere.(Hano twita sisitemu yo gukuramo ibintu byinshi harimo na Twin-screw extruders, Planet roller extruders nibindi)

Ariko twibwira ko ari ngombwa kugira sisitemu mbere yo gukama nubwo ukoresha extruder nyinshi.Kubera:

1) Multi-screw extruders ibyo bafite byose ni sisitemu igoye cyane ya vacuum-degassing yashyizwe kuri extruder kugirango birinde ingaruka ya hydrolysis itabaho kubera ko nta nzira yo gukama yashyizweho.Mubisanzwe ubwoko bwa extruder butandukanye ukoresheje imiterere:

Ibiribwa ntarengwa byemewe byokurya ntibigomba kuba hejuru ya 3000 ppm (0.3%)

Mubyukuri, amacupa ya icupa yerekana itandukaniro mubuziranenge, ingano yingingo, gukwirakwiza ingano nubunini - na cyane cyane mubushuhe.Ibicuruzwa nyuma yumuguzi byemerera kugumana hafi 5000 ppm yubushuhe mubicuruzwa no kubika inshuro nyinshi aya mazi hejuru yacyo.Mu bihugu bimwe na bimwe, ibiryo by'ibiryo birashobora kugera kuri 14,000 ppm ndetse bipakiye mu gikapu kinini.

Byombi urwego rwuzuye rwibintu byamazi nuburyo butandukanye, bidashobora kwirindwa, nikibazo nyacyo kubisumizi byinshi hamwe nigitekerezo kijyanye no gutesha agaciro.Ibi bikunze kuvamo ihindagurika ryibikorwa, bikaba bitagaragara bivuye kumuvuduko ukabije wibisohoka byumusemburo.Birashoboka cyane ko umubare munini wubushuhe bugumaho kuko bugenda bugera kumurongo wacyo muri extruder bitewe nubushyuhe bwambere bwambere muri resin, n'amafaranga yakuweho mugihe cya vacu

2) PET ni hygroscopique cyane kandi ikurura ubuhehere buturuka mu kirere.Ubushuhe buke buza hydrolyze PET mugice cyo gushonga, kugabanya uburemere bwa molekile.PET igomba kuba yumye mbere yo gutunganywa, kandi amorphous PET isaba korohereza mbere yo gukama kugirango ibice bitaguma hamwe nkuko bigenda nubwo inzibacyuho yikirahure.

Hydrolysis irashobora kubaho kubera ubushuhe kandi ibi birashobora kugaragara nkigabanuka rya IV (Intrinsic Viscosity) yibicuruzwa.PET ni "igice cya kirisiti".Iyo IV igabanutse, amacupa aba yoroheje kandi akunda kunanirwa kuri "irembo" (aho inshinge) mugihe cyo guhuha no kuzura.

Muburyo bwa "kristaline" ifite ibice bya kristaline na amorphous mubice byayo.Igice cya kristaline gitera imbere aho molekile zishobora kwihuza muburyo bugororotse.Mu turere tutari kristaline molekile ziri muburyo butunguranye.Mugukingira ko kristu yawe ari ndende, mbere yo kuyitunganya, ibisubizo bizaba ibicuruzwa bimwe kandi byiza.

ODE Yakoze IRD Infrared Rotary Ingoma Sisitemu zakoze iyi sub-imikorere muburyo bukoresha ingufu.Imirasire idasanzwe ya shortwave Infrared imishwarara itera ihindagurika ryubushyuhe bwa molekile mubikoresho byumye bitabaye ngombwa ko ufata intera ndende idakoreshwa yo gukoresha umwuka ushushe.Ubwo buryo bwo gushyushya mugihe cyo gushyushya no gukama bwaragabanutse kugera ku ntera ya 8.5 kugeza ku minota 20 bitewe na porogaramu yihariye, mu gihe amasaha menshi agomba kubarwa kuri sisitemu zisanzwe zishyushye cyangwa zumye.

Kuma yumye irashobora kunoza imikorere yimikorere ya twin-screw kuko igabanya iyangirika ryindangagaciro za IV kandi igateza imbere ituze ryibikorwa byose.