Ibyiza byo gukoresha uburyo bwiza bwo gupima ingano y'amazi ashongeshejwe (MFR) (MFI)

Uburyo bwo gupima uburemere bumwe (uburyo bwo gupima uburemere buhoraho) ni bumwe mu buryo bukoreshwa cyane mu gupima ibikoresho bipima umuvuduko w'amazi ashongeshejwe (MFR) –YYP-400E;

 

Ishingiro ry'ubu buryo ni ugushyira umutwaro uhoraho kuri pulasitiki ishongeshejwe hakoreshejwe uburemere buhamye, hanyuma ugapima uburemere bw'ibikoresho bishongeshejwe binyura mu gikoresho gisanzwe ku bushyuhe n'igihe runaka kugira ngo ubare umuvuduko w'amazi. Ibyiza byabyo bigaragarira ahanini mu bintu byinshi nko gukora, gukora neza, gukoresha neza, n'igiciro. Ibisobanuro birambuye ni ibi bikurikira:

1. Uburyo bwo gukora ni bworoshye kandi bworoshye, bufite uburyo buhamye bwo kugorora. Uburyo bumwe bwo gukora busaba gusa imiterere y'uburemere buhamye kandi ntibukenera ibikoresho bigoye byo guhindura imizigo. Mu gihe cyo gukora ikizamini, shyushya icyitegererezo kugira ngo gishonge, shyiramo uburemere buhamye, ugishyire ku gihe, hanyuma ukusanye ibikoresho bishongeshejwe. Intambwe ni nke kandi uburyo bwo gukora ikizamini ni bwinshi, bufite ubumenyi buke ku bakoresha, kandi bushobora kwigishwa vuba kandi bugasubirwamo. Ugereranyije n'uburyo bwo gukora ikizamini gihindagurika (nk'ikizamini cy'uburemere bwinshi ku gipimo cy'umuvuduko w'amazi ashongeshejwe), bikuraho gukenera gusimbuza uburemere no gupima imizigo, bigabanya cyane igihe cyo gutegura ikizamini kimwe.

2. Amakuru y’ikizamini arahamye cyane kandi ikosa riragenzurwa. Mu gihe cy’umutwaro uhoraho, imbaraga zo gukata ku bikoresho bishongeshejwe zirahamye, umuvuduko w’amazi urangana, kandi ihindagurika ry’uburemere bw’ibikoresho bishongeshejwe ni rito, bigatuma agaciro ka MFR gasubiramo neza. Ubuziranenge bw’uburemere bushobora kugenzurwa neza binyuze mu gupima (kuringaniza neza kwa ± 0.1g), hirindwa amakosa y’inyongera aterwa no guhuza uburemere n’uburyo bwo kohereza ibintu mu buryo buhindagurika. Ibi birakwiriye cyane cyane mu igeragezwa ry’ipulasitiki idafite amazi menshi (nka PC, PA) cyangwa ipulasitiki ifite amazi menshi (nka PE, PP).

3. Imiterere y'ibikoresho yoroshye, ikiguzi kiri hasi, kandi kubungabunga biroroshye. Igikoresho cya MFR gikoresha uburyo bumwe bwo gupima uburemere ntigisaba sisitemu igoye yo guhindura imizigo (nk'amashanyarazi, kubika ibiro), kandi ibikoresho ni bito mu bunini, bifite ibice bike, bigatuma ikiguzi cyo kugura kigabanukaho 20% kugeza kuri 40% ugereranije n'ibikoresho bifite uburemere bwinshi. Gusana buri munsi bisaba gusa gupima uburemere bw'ibiremereye, gusukura icyuma n'umuyoboro, kandi nta kubungabunga sisitemu yo kohereza cyangwa kugenzura bikenewe. Igipimo cyo gutsindwa ni gito, ukwezi kwacyo ni kure, kandi kibereye igenzura ry'ubuziranenge mu bigo bito n'ibiciriritse cyangwa muri laboratwari.

4. Yujuje ibisabwa bisanzwe kandi ikwiranye n’igenzura ry’ubuziranenge risanzwe. Uburyo bumwe bw’uburemere bwujuje ibisabwa by’amahame rusange nka ISO 1133-1 na ASTM D1238, kandi ni uburyo busanzwe bwo kugenzura ibikoresho fatizo bya pulasitiki no kugenzura ubuziranenge bw’uburyo ikorwa. Ku igenzura ry’imashini nyinshi zisanzwe (nka PE, PP, PS), ni umutwaro usanzwe gusa (nka 2.16kg, 5kg) ugomba kurangizwa kugira ngo ikizamini kirangire, nta gukenera guhindurwa kw’inyongera, kandi bukwiranye n’ibikenewe mu igenzura ry’ubuziranenge ry’inganda nini.

5. Ibisubizo by'amakuru ni ibintu byoroshye kandi bigamije isesengura rigereranya. Ibisubizo by'ibizamini bigaragazwa mu buryo butaziguye mu bice bya "g/10min", kandi ingano y'imibare igaragaza neza uko ibintu bishongeshejwe bigenda, bigatuma byoroha gukora igereranya ritambitse hagati y'amatsinda atandukanye n'abakora ibikoresho fatizo bitandukanye. Urugero: ku bwoko bumwe bw'ibikoresho fatizo bya PP, niba MFR y'itsinda A ari 2.5g/10min naho iya B ikaba 2.3g/10min, bishobora gufatwa mu buryo butaziguye ko itsinda A rifite ubushobozi bwo gukora neza, hatabayeho guhindura amakuru mu buryo bugoye cyangwa kuyatunganya.

Icyitonderwa ni uko imbogamizi y’uburyo bumwe bwo gukora ubuziranenge ishingiye ku kudashobora gupima uburyo bwo gupima ingano y’ingufu zishongeshejwe. Niba umuntu akeneye kwiga imiterere ya rheological ya pulasitiki iri mu buremere butandukanye, igikoresho cya MVR cyo mu bwoko bwa multi-load cyangwa capillary rheometer kigomba gukoreshwa hamwe.