Kev Cai Roj Hmab Extrusions

Thawj cov khoom siv raw rau cov khoom roj hmab yog cov roj hmab raw, lub ntuj lub ntuj fab sib xyaw ua los ntawm cov tawv ntoo thiab huab cog ntoo. Ntau yam ntxiv kuj tseem ntxiv rau cov khoom lag luam zoo.

Txhawm rau txhim kho kev siv zog thiab txwv tsis pub muaj cov paj rwb, ntaub pua chaw, thiab xaim xaim, kuj tau siv ua cov qauv txheej txheem.

Thaum lub sij hawm npaj npaj, ntau cov ntaub ntawv khaws cia yuav tsum tau hnyav raws li daim ntawv qhia. Roj hmab nyoos yuav tsum tau ua cov txheej txheem xws li kev muag khoom xws li ua kom tawg, thiab tawg, xws li kev ua haujlwm tsim nyog raws li lawv cov ntawv, ntsuas, thiab yaj. Txhua cov ntaub ntawv raw yuav tsum tau ceev cia kom ntseeg tau cov kev sib cais thaum ua tiav, yog li zam cov khoom lag luam zoo teeb meem.

Vim tias roj hmab nyoos nws tus kheej yog heev elastic tab sis tsis muaj plasticity, ncaj qha ua yog nyuaj. Yog li ntawd, plastication yog tsim nyog los txhim kho nws cov plastonity. Cov kauj ruam no yog qhov tseem ceeb rau kev sib xyaw ua ke, calendering, thiab moulding. Plastication degrades nyob ntev- saw molecules hauv roj hmab nyoos, kev sib sau cov roj hmab yas yas. Qhov no tso cai rau cov khoom xyaw sib xyaw ua ke kom tau ntau dua cov roj hmab, txhim kho lub permeability thiab moulding ntawm cov roj hmab.

Roj hmab plastication yog cov kauj ruam tseem ceeb hauv kev tsim cov khoom siv roj hmab. Nws feem ntau yog ob txoj kev: cov tshuab plastation thiab thermal plastication. Neeg kho tshuab plastication cuam tshuam nrog kev siv lub tshuab nqus dej thiab kev sib txhuam ntawm cov roj hmab tsis tshua muaj siab, hloov cov roj hmab los ntawm lub xeev muaj txiaj ntsig rau lub xeev yas. Thermal yas, ntawm qhov tod tes, siv cov cua sov thiab cov pa tawm kom loj hlob ntev thiab ua tiav qhov xav tau.

Tom qab yas, cov roj hmab nyoos yuav tsum tau sib xyaw nrog ntau yam cov khoom xyaw hauv cov txheej txheem hu ua kev sib xyaw. Nyob rau hauv cov roj hmab tov khoom, kev sib xyaw ua ke sib xyaw ua kom muaj kev ntseeg tau tias cov khoom xyaw ua ke yog covyees dispersed thoob plaws cov roj hmab nyoos, ua cov roj hmab sib tov. Cov roj hmab sib tov yog ib semi- Cov khoom tiav rau kev tsim cov khoom lag luam roj hmab khoom, thiab cov khoom lag luam zoo ncaj qha rau cov kev ua haujlwm ntawm cov khoom kawg.

Tom ntej no los ua cov kauj ruam sib, uas cuam tshuam nrog kev siv calender lossis extruder los ua cov roj hmab sib tov rau hauv cov khoom thiab ntau thiab tsawg. Txoj kev sib sau suav nrog calendering thiab extrusion. Calendering yog qhov tsim nyog rau kev tsim cov ntawv lossis phaj- Cov khoom zoo, yog qhov tsim nyog rau kev tsim cov tubular lossis tshwj xeeb} cov khoom lag luam. Thaum lub sijhawm ua cov txheej txheem no, cov ntaub ntawv fiber ntau xws li cov ntaub ntawv paj rwb, cov ntaub qhwv, thiab cov ntaub hlau liab, thiab cov ntaub hlau liab, thiab cov hlau ua ke kom txhawb nqa cov khoom siv hluav taws xob ntxiv thiab ruaj khov.

Cim npe nrov: Kev Cai Roj Hmab Extrusions, Tuam Tshoj Cov Cai Roj Hmab Extrusions Cov Chaw Tsim Tshuaj, Chaw muag khoom, Hoobkas