PET lub raj mis yas thaum txhaj tshuaj tiv thaiv
PET lub raj mis yas yog ib hom ntim ntim fwj feem ntau siv hauv tshuaj pleev ib ce. Tus nqi ntawm lub raj mis ntawm cov khoom no tsis yog siab dhau, yog li PET lub raj mis yas rau ntau cov khoom siv tshuaj pleev ib ce, tus nqi zoo tseem yog siab heev, thiab tau nyiam los ntawm ntau cov tshuaj pleev ib ce cov neeg siv khoom hauv khw. Peb yuav tsum xyuam xim rau dab tsi thaum molding xws li lub raj mis nrov?
Vim tias PET macromolecules muaj cov lipid pawg, nrog rau qee yam hydrophilicity, cov nplej yog rhiab heev rau dej ntawm qhov kub thiab txias. Thaum cov dej noo ntau tshaj qhov txwv, qhov hnyav molecular ntawm PET raug txo hauv kev ua, thiab cov khoom tiav yog xim thiab nkig. Nrog rau qhov no, nws yog ib qho tsim nyog kom qhuav cov khoom ua ntej ua, nws qhov kub thiab txias yog 150 degree, ntau tshaj 4 teev, feem ntau 170 degree, 3-4 teev. Huab cua - hluav taws txoj kev siv tau los xyuas seb cov ntaub ntawv puas yog qhov tho txawv. Nqa rov qab cov ntaub ntawv feem ntau tsis pub tshaj 25 feem pua, thiab coj rov qab cov khoom tho txawv kiag li.
Vim tias PET muaj lub sijhawm luv luv tom qab melting point thiab lub siab melting point, nws yog ib qho tsim nyog yuav tau xaiv qhov kev txhaj tshuaj nrog ntau qhov ntsuas kub thiab qis dua cov cua sov tsim los ntawm nws tus kheej tsis sib haum xeeb thaum lub sij hawm plasticization. Tsis tas li ntawd, qhov ua tau zoo ntawm cov khoom tiav (cov khoom siv hauv lub qhov ncauj) ntawm lub tshuab ntim tshuaj pleev ib ce yuav tsum tsis pub tsawg dua 2/3 ntawm lub tshuab txhaj tshuaj.
PET yas lub raj mis embryo feem ntau yog molded nrog sov ndlwg pwm, thiab yuav tsum muaj ib tug tshav kub rwb thaiv tsev board ntawm cov pwm thiab txhaj molding tshuab template, lub thickness ntawm uas yog hais txog 12 hli, thiab lub tshav kub rwb thaiv tsev board yuav tsum tau txais kev kub siab. . Lub tso pa tawm yog tsim nyog txaus los tiv thaiv ib feem ntawm overheating los yog fragmentation, tab sis qhov tob ntawm qhov chaw nres nkoj yog feem ntau tsis ntau tshaj 0.03mm, txwv tsis pub nws tsuas tshwm sim ya ntug. Tus nqi txhaj tshuaj yuav tsum ceev ceev kom tiv thaiv kom tsis txhob ntxov ntxov thaum txhaj tshuaj. Txawm li cas los xij, ceev heev thiab siab shear tus nqi ua rau cov khoom nkig, feem ntau hauv 4 vib nas this.
