UHMWPE vs. Aramid: Ni iyihe fibre ifite imikorere myiza ukeneye mu by'ukuri?

Mu isi y'ibikoresho bigezweho, amazina abiri ni yo agaragara mu biganiro igihe cyose hakenewe imbaraga, kuramba, no kurindwa:Polyethylene ifite uburemere bwa molekile nyinshi (UHMWPE)naAramid (ikunze kumenyekana n'amazina y'ibirango nka Kevlar® cyangwa Twaron®)Byombi ni ibikorwa by'ubuhanga bitangaje, ariko ntibishobora guhindurwa. Guhitamo ikintu kitari cyo kuri porogaramu yawe bwite bishobora gutuma habaho guhomba vuba cyangwa ikiguzi kitari ngombwa.

At Huidun UHMWPE, twibanda ku kuzamura imipaka y'ikoranabuhanga rya polyethylene. Ariko, twizera guha abakiriya bacu isura isobanutse y'uburyo ibi bikoresho bihuzwa. Muri iyi nyandiko, tuzareba mu buryo bwimbitse ibintu bishya, ibyiza n'imbogamizi bya fibre zombi kugira ngo bigufashe gufata icyemezo cyo kugura ibintu neza.

Kugira ngo dusobanukirwe imikorere yazo, tugomba kureba ADN yazo ya molekile. UHMWPE ni polyolefini ikozwe mu minyururu miremire cyane ya polyethylene. Iyi minyururu ihurira mu cyerekezo kimwe, ikora ibikoresho aho imbaraga za molekile ziyongera cyane, bigatuma habaho fibre ikomeye cyane ariko yoroheje bihagije kugira ngo ireremba hejuru y'amazi.

Ku rundi ruhande, Aramid ni polyamide ikora aromatike. Imiterere yayo ya molekile irimo impeta zikomeye zihujwe n'imigozi ikomeye ya hydrogen. Ibi bituma Aramid irwanya ubushyuhe n'imiti cyane, ariko ikayiha ubucucike bwinshi kurusha polyethylene.

Niba umushinga wawe ukeneye imbaraga nyinshi zishoboka hamwe n'uburemere buke bushoboka,UHMWPE niyo yatsinze neza.Ifatwa cyane nk'umunyu ukomeye cyane ku isi ukurikije uburemere—ifite imbaraga zikubye hafi 15 kurusha icyuma kandi ikagira imbaraga nyinshi kurusha iminyururu ya Aramid.

Kubera ko UHMWPE ifite ubucucike buri munsi ya 1.0 g/cm³, irareremba. Ibi bituma iba icyitegererezo cya zahabu mu bikorwa byo mu mazi, nko gukurura imigozi yo mu nyanja nini n'imigozi yo gukurura. Nubwo Aramid ikomeye, iremereye hafi 40% kandi izarohama mu mazi. Ku nganda nk'indege cyangwa intwaro zo mu bwoko bwa Personal Aid aho buri garama ibarwa, kuzigama uburemere butangwa n'imigozi ya UHMWPE ikomoka kuri Huidun bishobora guhindura byinshi.

Agatsinsino ka UHMWPE gashingiye ku bushyuhe bwayo. Kubera ko ari thermoplastic, UHMWPE itangira koroha hagati ya 80°C na 100°C ikanashonga hagati ya 144°C na 152°C. Ibi bigabanya ikoreshwa ryayo ahantu ubushyuhe bwinshi buba buri gihe, nko mu bikoresho byo kuzimya umuriro cyangwa imikandara y’inganda ikora cyane.

Aramid ni yo mwami udashidikanywaho wo kurwanya ubushyuhe. Ntishonga; ahubwo ihinduka karuboni ku bushyuhe burenga 400°C. Niba ukoresha umuriro utaziguye, ubushyuhe bwinshi, cyangwa ahantu hashyushye cyane, Aramid ni yo mahitamo meza. Ariko, ku bintu byinshi byo hanze, mu buryo bwa tekiniki, no mu nganda aho ubushyuhe buguma mu rugero rusanzwe, imikorere ya UHMWPE ikomeza kuba myiza.

Mu miterere y'isi isanzwe, ibintu bifitanye isano n'ibidukikije akenshi ni byo bigena igihe cyo kubaho cy'ibikoresho. Aha nihoUHMWPE irabyitwaramo nezacyane kurusha Aramid:

Ku bijyanye no kurinda umupira no gukoresha ibikoresho bidashobora gucibwa, ibikoresho byombi bikoreshwa cyane, ariko bitanga "amarangamutima" atandukanye n'imikorere itandukanye. UHMWPE ifite ubushobozi bwo gukururana buke cyane, ibi bigatuma irushaho "guhindagurika". Ibi bituma igira imikorere myiza cyane mu kunyerera ku buso busanzwe, bigatuma imigozi n'amaboko y'inganda bidashobora kwangirika cyane.

Mu ikoreshwa rya ballistic (nk'amakoti adapfa gutwikirwa n'amasasu), UHMWPE ikunze gukundwa kubera ubushobozi bwayo bwo gukwirakwiza ingufu vuba mu muyoboro wa fibre, ikaba irinda cyane ibice by'umuvuduko mwinshi mu gihe kandi yoroshye cyane ku uyambaye. Aramid iracyahabwa agaciro kubera gukomera kwayo no kudapfumuka kwayo, ariko icyerekezo cy'inganda kirimo kwerekeza ku bikoresho bya UHMWPE bigezweho kandi byoroheje.