Yiziphi Izakhiwo Zomzimba Zerabha

Okulandelayo izici ezibonakalayo zerabha:

· Amandla adonsela phansi athize

· Ukumelana nemihuzuko

· Ukumelana nezinyembezi

· Isethi yokucindezela

· Ukuqina

· Elongation

· I-tensile modulus

· Amandla aqinile

· Ubulukhuni

Ukuqina

Isakhiwo samakhemikhali sama-elastomers siwahlinzeka ngobulukhuni bemvelo obungashintshwa. Ubulukhuni obuguquliwe bube sebulinganiswa nge-durometer (duro) esikalini sase-Shore. I-Shore A isetshenziselwa irabha eqinile ethambile kuya kwemaphakathi. Irabha eqinile, ehambisana nokusula kwepensela, inobunzima obungama-duro angu-40. Ngokuphambene, irabha eqinile, efana naleyo esetshenziswa kuma-hockey pucks, inobunzima be-duro obungu-90.

Amandla Okuqina

Amandla aqinile yinani lamandla adingekayo ukuze ahlukanise isifanekiso senjoloba size siphuka. Kwaziwa nangokuthi amandla okuqina okugcina, futhi kukalwa ngokwama-megapascals noma amaphawundi nge-intshi yesikwele (psi) ngokusho kwe-ASTM D412. Amandla aqinile ayisici esibalulekile kubaklami nabathengi njengoba kubonisa iphuzu lokwehluleka okubangelwa ukwelulwa kwerabha.

I-Tensile Modulus

I-tensile modulus ingcindezi noma amandla adingekayo ukuze kukhiqizwe ubunzima noma iphesenti lokwelula kusampula yenjoloba. Nakuba kuzwakala kufana namandla aqinile, izakhiwo zihlukile. Irabha eqinile ivamise ukuba nemodulus ephezulu eqinile, iyenze ikwazi ukuqina. Iphinde imelane kakhulu ne-extrusion, okuyinqubo yokukhiqiza izinto zesitoko ezisetshenziswa ekwenziweni ngokwezifiso.

Ukwelula

Ukwelulwa kuchazwa njengokukhuphuka kwephesenti, noma ubunzima, kubude bangempela besampula yerabha ngokusetshenziswa kwamandla aqinile, noma ingcindezi. Amanye ama-elastomer ajwayele ukwelula kakhulu uma kuqhathaniswa namanye. Irabha yemvelo, ngokwesibonelo, inganwebeka ifike ku-700% ngaphambi kokufinyelela ubude bayo bokugcina, okubangela ukuba iphuke. Kodwa-ke, ama-fluoroelastomers angakwazi ukumelana nobude obungama-300%.

Ukuqina

Ukuqina, okwaziwa nangokuthi i-rebound, ikhono lerabha lokubuyela kusayizi wayo wangempela kanye nokuma okulandela ukuwohloka kwesikhashana, njengokuthinta indawo yensimbi. Ukuqina kubalulekile ezimpawini eziguquguqukayo ezisebenza njengesithiyo phakathi kwezindawo ezimile nezinyakazayo. Kudingekile ukucabangela ukuqina kwezinhlelo zokusebenza ezidinga isimo sezulu phakathi kohlaka lomnyango nomnyango.

Isethi Yokucindezela

Isethi yokuminyanisa izinga lapho i-elastomer ehluleka ngayo ukubuyela ekujimeni kwayo kwasekuqaleni lapho ikhulula umthwalo ocindezelayo. Ukucindezelwa okuphindaphindiwe kwe-rubber seal ngokuhamba kwesikhathi kubangela ukukhululeka kwengcindezi okuqhubekayo. Isethi yokuminyanisa ingumphumela wokugcina wokwehla okuqhubekayo kwamandla okuvala.

Ukumelana Nezinyembezi

Ukumelana nezinyembezi ukumelana kwe-elastomer ekuthuthukisweni kokusikwa noma i-nick lapho kusetshenziswa ingcindezi. Lesi sakhiwo, esibizwa nangokuthi amandla ezinyembezi, silinganiswa ngama-kilonewton imitha (kN/m) noma amandla ephawundi iyintshi (lbf/in). Kufanele kucatshangelwe lapho kukhethwa inhlanganisela yokunquma onqenqemeni okuzobe kuthintana nezinto ezicijile noma imiphetho yensimbi emagebhugebhu.

Ukumelana ne-Abrasion

Ukumelana ne-abrasion ukumelana nerabha ekuhutsheni ngokukhuhla noma ukuyihlikihla. Irabha emelana nemihuzuko isetshenziswa ezimbonini ezihlanganisa amabhande okuthutha ahambisa amalahle, namaphampu aphatha ama-slurries.

I-Gravity ethize

Amandla adonsela phansi aqondile isilinganiso sesisindo sento ethile nesisindo somthamo olinganayo wamanzi ezingeni lokushisa elithile. Lesi sakhiwo senza osokhemisi bakwazi ukuhlonza izinhlanganisela. Kubalulekile ukuthi abaklami bengxenye kanye nabathengi bezobuchwepheshe baqaphele ukuthi irabha enamandla adonsela phansi akhethekile inikeza amayintshi ayisikwele engeziwe ngephawundi ngalinye lesitoko. Ngokuphambene, lawo ane-gravity ethile ephakeme anezinzuzo ekubumbeni ukungaguquguquki.