PP granulation yog dab tsi? Txoj kev granulation hmoov?

Granulation yog rhuav cov khoom yas pov tseg thiab tom qab ntawd cua sov thiab yaj lawv ua tej daim me me, qhov loj thiab cov taum pauv zoo ib yam, yog li koj tuaj yeem siv cov yas me me no los ua cov khoom yas tshiab, qhov no hu ua granulation. PP granulation yog dab tsi? Txoj kev granulation hmoov?

PP yog cov lej lus Askiv ntawm polypropylene, PP granulation hais txog cov khoom yas polypropylene pov tseg (feem ntau yog cov hnab yas pov tseg) tom qab rov ua dua tshiab, ntxuav,yas extrudercov khoom yas polypropylene rov ua dua tshiab, tuaj yeem sib xyaw rau hauv cov ntaub ntawv tshiab polypropylene rau kev siv lossis siv ncaj qha ib leeg.

Tam sim no, cov txheej txheem kho hmoov tau muab faib ua cov granulation ntub, cov granulation npau, cov pwm siab, tshuaj tsuag thiab disperse pa phem, cov pwm kub yaj thiab lwm yam.

1. Txoj kev ua kom cov granulation ntub
Kev ua kom cov hmoov ntub yog kom nkag mus rau hauv qee cov kua lossis cov khoom sib txuas rau hauv cov hmoov zoo thiab do kom zoo, kom cov kua thiab cov hmoov zoo sib ze ua ke, tsim cov zog sib koom ua ke thiab tsim cov khoom sib sau ua ke.

2. Txoj kev ua kom cov granulation npau
Txoj kev ua kom cov hmoov granulation npau yog siv cua los ntawm hauv qab ntawm cov khoom siv los ntab cov hmoov me me thiab rab phom txau sab saud tawm ntawm cov slurry tom qab sib cuag tag nrho thiab ua ke ua cov khoom me me.

3. Txoj kev molding siab
Txoj kev tsim cov khoom siv siab yog txwv cov khoom siv hmoov av hauv ib qho chaw tshwj xeeb, thiab nias nws mus rau hauv lub xeev ntom ntom los ntawm kev siv lub zog sab nraud. Raws li lub cev lub zog sab nraud siv, txoj kev molding siab tuaj yeem faib ua ob pawg, uas yog, txoj kev molding thiab txoj kev extrusion.

4. Tshuaj tsuag thiab faib cov pos huab
Cov tshuaj tsuag thiab cov pa dej tawg yog siv los ua cov kua lossis cov khoom siv ib nrab-kua uas nyob hauv lub xeev tawg heev dhau los ua cov khoom khov ncaj qha rau hauv cov khoom siv tshwj xeeb.

5. Txoj kev ua kom kub yaj
Txoj kev siv cov txheej txheem kub yaj yog siv cov yam ntxwv qis melting ntawm cov khoom (feem ntau tsawg dua 300 ℃), cov khoom siv yaj, los ntawm kev sib xyaw tshwj xeeb, kom nws cov condensation crystallization mus rau hauv cov duab xav tau ntawm daim ntawv, strip, block, hemispherical thiab lwm yam.

Kev ua hmoov granule yog ib qho txheej txheem cuam tshuam los ntawm ntau yam; kev xaiv cov thev naus laus zis granule hmoov tsim nyog yuav tsum xav txog ntau yam:

1. Cov yam ntxwv ntawm cov khoom siv raw

2. Cov kev cai ntawm lub peev xwm ua tiav
Lub peev xwm ua haujlwm ntawm cov txheej txheem granulation sib txawv heev, yog li ntawd, kev nqis peev ntawm cov khoom siv thiab cov nqi ua haujlwm yuav tsum tau xav txog.

3. Kev faib tawm qhov loj ntawm cov khoom me me
Qhov loj me ntawm cov khoom tau los ntawm ntau txoj kev granulation sib txawv heev, xws li qhov loj me me ntawm cov tshuaj tsuag granulation, thaum qhov loj me ntawm cov khoom siv granulation compressed tuaj yeem loj, yog li txoj kev granulation yuav tsum tau xaiv raws li txoj kev granulation xav tau.

4. Cov khoom me me zoo li cas
Cov khoom tau los ntawm kev sib xyaw granulation thiab fluidization granulation yog cov khoom me me uas muaj cov duab tsis sib xws. Dov rau hauv lub pob tuaj yeem tau txais lub pob du; Rau cov khoom me me uas muaj cov duab tshwj xeeb, nws yog qhov tsim nyog siv compression thiab extrusion granulation. Kev xaiv cov khoom tsim cov khoom me me yuav tsum xav txog qhov xav tau thiab yooj yim ntawm cov txheej txheem tom ntej.

5. Lub zog ntawm cov khoom me me
Cov txheej txheem qhuav yuav ua rau muaj hmoov av thiab yog li ntawd tsis haum rau kev ua cov hmoov tshuaj lom lossis lwm yam hmoov phom sij. Cov txheej txheem ntub, ntawm qhov tod tes, yuav tsum tau ziab tom qab ua cov hmoov tshuaj thiab pov tseg qee cov kuab tshuaj. Qee cov tshuaj tsis sib cuag nrog dej, lossis rov ua dua los ua lwm cov qauv thaum lub sijhawm ziab, uas tsis haum rau cov txheej txheem ntub.

6. Kev xaiv qhuav/ntub

7. Qhov porosity thiab qhov ceev ntawm cov khoom me me
Qhov porosity thiab qhov ceev ntawm cov khoom me me hauv ob qho ntsuas no kuj cuam tshuam ncaj qha rau lub zog ntawm cov khoom, xws li siv rau hauv kev tsim cov khoom me me ntawm cov catalyst, porosity thiab lub zog tib lub sijhawm txhim kho yog ob qho kev tsis sib haum xeeb. Qhov loj ntawm porosity thiab qhov ceev tuaj yeem hloov kho los ntawm cov txheej txheem ua haujlwm.