Dab tsi yog qhov kub thiab txias ntawm cov yas txhaj tshuaj molding?
Qhov chaw ntawm cov yas txhaj tshuaj molding kub yog suav tias yog "lifeline" ntawm kev txhaj tshuaj molding txheej txheem tswj. Nws qhov tseeb ncaj qha cuam tshuam rau qhov seem stability, txhua yam muaj zog, thiab nto tiav ntawm cov khoom.
Feem ntau, kev ua haujlwm kub yuav tsum nrhiav qhov sib npaug ntawm cov khoom siv melting kub (Tm) thiab decomposition kub (Td). Ua ib qho piv txwv ntawm ABS, nws qhov kub thiab txias yog kwv yees li 105 degree, thiab nws qhov kub thiab txias yog siab tshaj 250 degree. Yog li ntawd, lub chim kub yuav tsum tau teem ntawm 210-240 degree, yuav tsum tau tswj meej zoo li taug kev ib tug tightrope.
Cov ntaub ntawv yas sib txawv muaj qhov sib txawv ntawm qhov kub thiab txias: cov ntaub ntawv crystalline xws li PP (polypropylene) yuav tsum tshaj lawv qhov sib txawv ntawm qhov sib txawv (160-}}170 degree), thiab lub thoob kub feem ntau siv cov gradient nce los ntawm sab nraub qaum mus rau pem hauv ntej, feem ntau 180-230℃; thaum cov ntaub ntawv tsis-crystalline xws li PS (polystyrene) tuaj yeem hloov kho tau yooj yim nyob rau hauv ntau qhov dav (180-280 degree), zoo li symphony conductor kho qhov "kub symphony" raws li cov khoom tuab.
Kev txhaj tshuaj pwm kub kuj tseem ceeb heev. High-gloss cov khoom yuav tsum muaj qhov kub ntawm 80-100℃kom tshem tawm cov kab vuam, thaum cov khoom zoo tib yam tuaj yeem txaus siab rau 40-60℃.
Kev tswj kub yuav tsum xav txog cov khoom fluidity. Qhov kub qis dhau yuav ua rau muaj qhov nce sai sai ntawm cov viscosity, uas ua rau muaj qhov tsis zoo los yog ripple; thaum kub heev yuav ua rau cov khoom degradation, ua npuas los yog hlawv cov cim. Qhov ntsuas kub tsis zoo tuaj yeem ua tau zoo -tu los ntawm kev soj ntsuam qhov kev txhaj tshuaj thiab cov khoom zoo li.
Niaj hnub nimno txhaj tshuaj molding tshuab tau nruab nrog PID ntse tswj qhov kub thiab txias, uas tuaj yeem tswj qhov kub thiab txias hloov hauv qhov tsim nyog, muab "qhov kub thiab txias" rau kev txhaj tshuaj molding.