Hauv kev tsim khoom niaj hnub, cov nplaum thiab txheej txheej ua cov haujlwm tseem ceeb. Lawv tsis tsuas yog muab cov adhesion muaj zog rau ntau cov ntaub ntawv, tab sis kuj muab cov khoom lag luam tshwj xeeb thiab ua kom pom. Niaj hnub no, cia txoj kev sib sib zog nqus ntawm cov txheej txheem moulding ntawm cov ob yam khoom no.
Cov txheej txheem moulding ntawm cov nplaum muaj ob peb qhov txuas tseem ceeb. Ua ntej, cov khoom lag luam raw yog lub hauv paus, uas yuav tsum muaj qhov hnyav thiab sib xyaw ntawm ntau cov monomers, cov ntxiv thiab cov kuab tshuaj. Tom ntej no, cov tshuaj tiv thaiv theem yog qhov tseem ceeb, thiab ib qho cuab yeej sib tw nrog polymerization thiab sib txuas ua ke, muab cov nplaum sib txuas ua haujlwm thiab ua kom muaj txiaj ntsig. Tom qab ntawd, cov theem sib tov tusyees sib xyaw cov tshuaj polymer nrog lwm cov khoom xyaw kom ntseeg tau cov khoom lag luam ruaj khov.
Nyob rau hauv cov nqe lus ntawm molding, extrusion molding yog ib txoj kev sib txawv. Cov nplaum sib xyaw ua tiav tau ua tiav rau hauv cov duab uas xav tau thiab qhov loj me, xws li tubular, granular, etc. los ntawm kev rho tawm cov khoom siv. Qhov txuas no yuav tsum xaiv cov pwm tsim nyog thiab cov txheej txheem tsim nyog raws li cov khoom siv thiab ntim khoom uas yuav tsum tau ua.
Cov txheej txheem moulding ntawm cov khoom siv txheej suav nrog cov kauj ruam xws li txheej, kho thiab kuaj. Nyob rau hauv theem txheej txheej, cov sib xyaw txheej tawv yog cov kuj tau siv cov kua nplaum, tshuaj tsuag, thiab lwm yam los kho cov khoom siv kom zoo rau cov khoom kawg. Qhov kev saws me nyuam ntawm cov txheej txheem txuag xws li infrared yuav cov cuab yeej tau zoo heev txhim kho kev ua tau zoo.
Ib qho ntxiv, kev xaiv ntawm cov txheej txheem molding tseem yuav tsum xav txog cov yam ntxwv xws li cov khoom yuav tsum tau ua, cov nqi tsim nyog thiab kev lag luam nce qib. Cov cuab yeej tsim nyog thiab cov cuab yeej tsim ua tsim nyog kuj tseem yog tus yuam sij los xyuas kom muaj kev vam meej ntawm cov txheej txheem moulding.
Hauv ntej, cov txheej txheem moulding ntawm cov nplaum thiab cov khoom siv txheej tseem ceeb hauv kev tsim khoom lag luam, thiab nws txoj kev siv thev naus laus zis yuav txhawb nqa kev txhim kho kev lag luam ntsig txog kev lag luam.
