Qhov ntev ntawm fiber ntau ntawm LFT mas nws txawv nrog rau qhov ua tiav. Cov khoom siv feem ntau yog nyob ntawm qhov ntev ntawm qhov ntev ntawm fiber ntau, yog li cov txheej txheem ntawm cov txheej txheem no zoo dua li kev txhaj tshuaj molding ntawd cov khoom siv dag zog. Feem ntau, cov hlwv muaj qhov nruab nrab ntawm kwv yees li 5 txog 20 hli nyob rau hauv ib feem yog qhov ua ntev fibers.
Hauv qhov pib LFT qhuav, cov tshuaj ntsuab thiab LFT-G ntev fiber ntau pellets tau siv los ua kom tiav qhov khoom kawg ntawm kev txhaj tshuaj. Vim tias qhov ntev ntawm fiber ntau ntawm LFT-G ntev fiber ntau tsuas yog tsawg, qhov kawg LFT khoom kev kawm tseem siv tau, tsawg xyoo, LFT-D-ILC txheej txheem tshuab tau los ua tus sawv cev rau LFT khoom.
LFT-D-ILC yog hu ua cov khoom siv thermoplastic cov khoom siv ntev ntev hauv cov tshuab molding, thiab Lus Askiv yog Long Fiber reinforced Thermoplastics-Direct processing-In Line Compounding. Cov txheej txheem no muaj nyob hauv daim duab. Nyob rau hauv cov txheej txheem no, kev sib xyaw ua ke nyob rau hauv txoj kab ke ua ke rau hauv txoj kev sib sau ua ke, thiab cov khoom matrix thiab additives yog xa mus rau ib chav ua zog gravimetric dos ua ke nrog kom sib xyaw kom haum raws li cov khoom siv dag zog ntawm qhov. Feem ntau, xim, antioxidants, cua sov, thiab cov crosslinkers muab ib qho kev tsim qauv. Cov txheej txheem molten kis ncaj qha los ntawm kev tuag rau hauv qhov qhib ntawm extruder compound (ntxaib ntsia hlau). Qhov no yog qhov uas cov iav rov los ntxiv.
Yuav kom txo tau txoj kev rov ua kom rov qab, tus tub rog raug muab tso rau ntawm ib tus kws tsim tshwj xeeb tsim. Txhua qhov rov los yog coj los ntawm lub raj yas tshwj xeeb kom tsis txhob txhuam thiab electrostatic repulsion. Txhua qhov rov los xyuas dua los ntawm ib tus sensor.
Cov txheej txheem yog pub los ntawm ib lub raj rau hauv ib qho khoom siv ua ntej uas kis tau los ntawm cov rhuab hlawv. Qhov ntsuas kub yuav tsum tsis txhob siab dua kom tiv thaiv kev puas tsuaj rau lub fiberglass. Los ntawm ib tug tsim tshwj xeeb tsim interface, lub fibers tsim ib qho kev hloov nyob rau hauv lub molten polymer raws li lawv nkag mus rau compounding extruder.
Lub compounder yog ib co co-rotating, cross-over thiab nws tus kheej tu ntaus uas thim ntawm 26D (26 x inch), nqus pab lossis atmospheric siab. Cov additive yuav muab ntxiv rau ntawm 14D hauv qhov chaw uas siv cov khoom pub rau sab laug. Lub qhov dej siab extrusion yog kwv yees li 40 mus rau 60 bar (4 mus rau 6 MPa) nyob ntawm seb lub ntsuas kub ntub (MFI) ntawm lub polymer.
Cov extruder compounding tsis tu ncua siv cov khoom yas, thiab nyob rau ntawm qhov kub thiab txias, qhov ua haujlwm tuag tuag cais cov yas nrawm molding khoom mus rau ib txoj siv kom muaj kev sib nrig heev. Kev siv txoj siv tsheb thauj khoom pov tseg los ntawm cov cua kub kom tiv thaiv tau qhov kub ntawm qhov extruded block molding khoom los ntawm kev xa me nyuam rov qab. Thaum cov ntaub thaiv mould khoom yog grasped ntawm tus neeg ua neeg hlau, qhov cua kub tso cai qhib.
Cov ntaub thaiv nrawm molding yog xa mus rau ib qho kev sib sau apparatus uas ua tiav cov txheej txheem BMC los yog SMC thiab, yog hais tias yuav tsum ua ntxiv, nkag mus rau lwm cov txheej txheem.
