Kev cuam tshuam ntawm melt index ntawm cov ntaub ntawv yas

1. Lub melting Performance index yuav cuam tshuam rau kev ua haujlwm ntawm cov yas. Rau yas raw cov ntaub ntawv, feem ntau siab yaj Performance index, siab fluidity, yooj yim molding thiab ua, zoo rigidity thiab barrier zog; tsis muaj kev cuam tshuam tsis zoo, ib puag ncig kev ntxhov siab tawg ua haujlwm, cov khoom sab nraum zoov, thiab cov khoom siv tshuaj lom neeg; qhov me me qhov ntsuas qhov ntsuas, qhov tawg lub zog, hardness, toughness, aging stability thiab lwm yam khoom zoo tag nrho.

2. Kev ua haujlwm xws li spinning thiab txhaj tshuaj molding ntawm polyester yog ua nyob rau hauv lub xeev molten. Lub viscosity ntawm cov yaj yog ib qho tseem ceeb tshaj plaws nyob rau hauv nws cov khoom rheological, thiab nws tseem yog tus yuam sij kom ntseeg tau cov khoom zoo.

3. Lub melt index yog ib tug parameter uas characterizes tus ndlwg tus nqi ntawm raw khoom nyob rau hauv cov ntsia hlau. Tus nqi ntws ntawm cov polymer yog ntsuas raws li lub zog shear, uas cuam tshuam nrog lub zog shear thiab kub.

4. Cov kev sib txhuam coefficient ntawm cov khoom uas muaj siab yaj Performance index thiab cov ntsia hlau nyob rau hauv lub extruder yog me me, yog li cov zis kuj me me. Cov khoom uas muaj qhov siab melting Performance index feem ntau muaj ntau impurities, uas tso siab heev rau lub tshuab taub hau, uas yog ib qho yooj yim ua rau network blockage.

5. Txawm hais tias qhov fluidity ntawm cov khoom siv xeem tuaj yeem ua tau raws li qhov yuav tsum tau ua, yog tias qhov kev xeem tsis tsim nyog, nws tsis tuaj yeem siv los ua cov khoom siv raw.

Yog xav paub ntxiv txog melt flow index tester, txais tos mus saib peb lub vev xaib:

https://www.chinatestequipments.com/tests-on-plastic-raw-materials/melt-flow-index-tester/mfi-melt-flow-indexer-mfr-mvr-test-method.html