Amakuru

Mu myaka yashize, hariho sisitemu nyinshi zo gukuramo ibicuruzwa zashyizweho ku isoko nkuburyo busimburana bwa Single - screw extruders 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. 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 bigaburira birashobora kugera kuri 14,000 ppm ndetse bipakiye mu gikapu kinini.

Byombi urwego rwuzuye rwibintu byamazi nuburyo butandukanye, bitakwirindwa, ni ikibazo nyacyo kuri extruder ya screw nyinshi hamwe nigitekerezo kijyanye no gutesha agaciro. Ibi bikunze kuvamo ihindagurika ryibikorwa, bikaba bitagaragara biturutse kumyuka ihindagurika cyane yumuvuduko wa extruder.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 kuyitunganya, kandi amorphous PET isaba kristalisiti mbere yo gukama kugirango ibice bitaguma hamwe nkuko bigenda nubwo inzibacyuho yikirahure.

Hydrolysis irashobora kubaho kubera ubushuhe kandi ibi birashobora kugaragara nko kugabanuka kwa IV (Intrinsic Viscosity) yibicuruzwa. PET ni "igice cya kirisiti". Iyo IV igabanutse, amacupa aracika intege kandi akunda kunanirwa kuri "irembo" (aho atera inshinge) mugihe cyo guhuha no kuzura.

Muburyo bwa "kristaline" ifite ibice bya kristaline na amorphous mubice byayo. Igice cya kristalline 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 yagenewe imirasire yimirasire itera ihindagurika ryubushyuhe bwa molekuline mubikoresho byumye bitabaye ngombwa ko ufata intera ishimishije yo gukoresha umwuka ushushe. Ubwo buryo bwo gushyushya mugihe cyo gushyuha 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 cyane imikorere yimikorere ya twin-screw kuko igabanya iyangirika ryindangagaciro za IV kandi igatezimbere cyane ituze ryibikorwa byose.