Uthini umahluko phakathi kwezinto ze-NBR kunye ne-EPDM?

Kwizicelo zamashishini, ukukhethwa kwezinto eziphathekayo kubalulekile ukuqinisekisa ukuhlala ixesha elide, ukusebenza, kunye neendleko ezifanelekileyo. Izinto ezimbini ezisetyenziswa ngokuqhelekileyo zerabha yokwenziwa yirabha ye-nitrile (NBR) kunye ne-ethylene propylene diene monomer (EPDM). Ngelixa zombini izixhobo zineempawu zazo ezizodwa kunye nokusetyenziswa, ukuqonda ukungafani kwazo kubalulekile ekukhetheni imathiriyeli efanelekileyo kwiimfuno ezithile.

Izithako kunye neempawu

I-NBR yi-copolymer eyenziwe kwi-acrylonitrile kunye ne-butadiene. Umxholo we-acrylonitrile kwi-NBR ngokuqhelekileyo phakathi kwe-18% kunye ne-50%, echaphazela ukuxhathisa kweoli kunye neempawu zemishini. I-NBR yaziwa ngokuxhathisa okugqwesileyo kwi-oyile, amafutha kunye nezinye iikhemikhali, iyenza ibe yimathiriyeli yokuzikhethela kwiimoto kunye nezicelo zemizi-mveliso ezihlala zidibana nezi zinto. I-NBR ikwanazo namandla okuzibamba afanelekileyo, ukuxhathisa kwe-abrasion kunye nokuguquguquka, okubaluleke kakhulu kumatywina, iigaskets kunye nemibhobho.

I-EPDM, ngakolunye uhlangothi, i-terpolymer eyenziwe kwi-ethylene, ipropylene, kunye ne-diene component. Olu qulunqo lukhethekileyo lunika i-EPDM ukuxhathisa kwemozulu okugqwesileyo, ukuzinza kwe-UV, kunye nokumelana ne-ozone. I-EPDM ifaneleka ngokukodwa kwizicelo zangaphandle ezifana ne-membrane yokuphahla, i-autostripping weatherstripping, kunye nezitywina ezifuna ukumelana neemeko zokusingqongileyo ezinzima. Ukongezelela, i-EPDM ihlala iguquguquka kumaqondo aphantsi, okwenza kube yinto efanelekileyo yokusetyenziswa kwemozulu ebandayo.

Ukumelana nobushushu

Ukumelana nobushushu obuphezulu ngomnye umahluko obalulekileyo phakathi kwe-NBR kunye ne-EPDM. I-NBR ngokuqhelekileyo yenza kakuhle kuluhlu lweqondo lokushisa -40 ° C ukuya kwi-100 ° C (-40 ° F ukuya ku-212 ° F), kuxhomekeke kulwakhiwo oluthile. Nangona kunjalo, ukuhlala ixesha elide kumaqondo obushushu aphezulu kunokubangela ukuthotywa. Ngokwahlukileyo, i-EPDM inokumelana nomgangatho obanzi wokushisa, ukusuka -50 ° C ukuya kwi-150 ° C (-58 ° F ukuya kwi-302 ° F), okwenza kube yinto efanelekileyo yokukhetha izicelo ezifuna ukuqina okuphezulu kwiimeko ezinzima.

Ukumelana nemichiza

Ngokubhekiselele kwimichiza yokumelana neekhemikhali, i-NBR isebenza kakuhle kwiindawo eziqulethe ioli kunye namafutha. Ngenxa yokukwazi ukumelana neemveliso ezisekelwe kwipetroleum, i-NBR isoloko isetyenziswa kushishino lweemoto kwimibhobho yamafutha, amakhonkco e-O, kunye namatywina. Nangona kunjalo, i-NBR inokunganyangeki kakuhle kwi-solvents ye-polar, i-acids, okanye iziseko, ezinokubangela ukuba zidumbe okanye zithobe.

I-EPDM, ngakolunye uhlangothi, ixhathisa ngokugqithiseleyo amanzi, umphunga, kunye noluhlu olubanzi lweekhemikhali, kuquka i-acids kunye neziseko. Oku kwenza ukuba ilungele imboni yokulungisa imichiza kunye nezicelo zangaphandle apho ihlala ibonakaliswe kumswakama. Nangona kunjalo, i-EPDM ayifanelekanga ukusetyenziswa ngamafutha kunye namafutha, njengoko idumba kwaye ilahlekelwa yimpahla yayo yomatshini.

isicelo

Ukusetyenziswa kwe-NBR kunye ne-EPDM kubonisa iimpawu zayo ezizodwa. I-NBR isetyenziswa ngokubanzi kwiinkqubo zamafutha, i-gaskets kunye nokutywinwa kwintsimi yeemoto, kunye nezicelo zoshishino ezifana ne-oil seals kunye ne-hoses. Ukunganyangeki kwayo kwe-oyile kuyenza ibe yimfuneko eyimfuneko kwiindawo ezivezwe kwiimveliso zepetroleum.

Ngokwahlukileyo, i-EPDM ifaneleka ngakumbi kwizicelo ezifuna ukuchasana kwemozulu, njengokufulela, ukutywinwa kweefestile, kunye nokuhluthwa kwemozulu yemoto. Ukuchasana kwayo ne-UV kunye ne-ozone kuyenza ilungele ukusetyenziswa ngaphandle, iqinisekisa ukuhlala kwayo ixesha elide kunye nokusebenza kwayo nakwiimeko ezinzima.

Isishwankathelo, ukukhethwa kwezinto ze-NBR kunye ne-EPDM kuxhomekeke kwiimfuno ezithile zesicelo. I-NBR iyona nto ikhethwa yi-oyile kunye nokuchasana kwamafutha, ngelixa i-EPDM igqwesa kwizicelo ezifuna imozulu kunye nokuchasana kwe-ozone. Ukuqonda ukungafani kokubunjwa, iipropati, ukumelana nokushisa okuphezulu, ukuchasana kweekhemikhali, kunye nezicelo kuya kunceda abavelisi kunye neenjineli ukuba benze izigqibo ezinolwazi xa bekhetha izinto ezifanelekileyo ukuhlangabezana neemfuno zabo.

I-Kingflex ineemveliso zombini ze-NBR kunye ne-EPDM.Ukuba unombuzo, nceda uzive ukhululekile ukuthumela umbuzo kwiqela le-Kingflex nangaliphi na ixesha.