Ma nā noi ʻoihana, he mea koʻikoʻi ke koho ʻana i nā mea e hōʻoia ai i ka lōʻihi, ka hana, a me ka uku-pono. ʻElua mau mea hoʻohana maʻamau ʻo ka nitrile rubber (NBR) a me ka ethylene propylene diene monomer (EPDM). ʻOiai ua loaʻa i nā mea ʻelua ko lākou mau waiwai ponoʻī a me nā noi, pono ka hoʻomaopopo ʻana i ko lākou ʻokoʻa i ke koho ʻana i nā mea kūpono no nā pono kikoʻī.
Nā mea a me nā waiwai
ʻO ka NBR he copolymer i hana ʻia mai ka acrylonitrile a me ka butadiene. ʻO ka maʻiʻo acrylonitrile ma NBR ma waena o 18% a me 50%, e pili ana i kona kūpaʻa aila a me nā waiwai mechanical. ʻIke ʻia ʻo NBR no kona kūpaʻa maikaʻi ʻana i ka aila, nā wahie a me nā mea kemika ʻē aʻe, e lilo ia i mea koho no nā ʻoihana kaʻa a me nā ʻoihana ʻoihana e pili pinepine me kēia mau mea. Loaʻa i ka NBR ka ikaika tensile maikaʻi, ke kūpaʻa abrasion a me ka maʻalahi, he mea koʻikoʻi no nā sila, gaskets a me nā hoses.
ʻO EPDM, ma kekahi ʻaoʻao, he terpolymer i hana ʻia mai ka ethylene, propylene, a me kahi mea diene. Hāʻawi kēia ʻano hana ʻokoʻa iā EPDM maikaʻi loa i ka wā kūʻē, UV kūpaʻa, a me ka pale ozone. He kūpono loa ʻo EPDM no nā noi waho e like me nā membrane o ka hale, ka hoʻokaʻawale ʻana i nā kaʻa, a me nā sila e pono ai ke kū i nā kūlana kūlohelohe koʻikoʻi. Eia kekahi, hiki ke maʻalahi ka EPDM i nā haʻahaʻa haʻahaʻa, e lilo ia i koho kūpono no nā noi anuanu.
Kūleʻa wela
ʻO ka pale wela kiʻekiʻe kekahi ʻokoʻa nui ma waena o NBR a me EPDM. Hana maikaʻi ʻo NBR ma kahi ākea o -40°C a hiki i 100°C (-40°F a hiki i 212°F), ma muli o ke ʻano kikoʻī. Eia naʻe, hiki i ka loaʻa ʻana i nā mahana kiʻekiʻe ke hoʻohaʻahaʻa. ʻO ka ʻokoʻa, hiki i ka EPDM ke kū i kahi ākea ākea ākea, mai -50 ° C a i 150 ° C (-58 ° F a 302 ° F), e hana ana i kahi koho kūpono no nā noi e koi ana i ka elasticity kiʻekiʻe i nā kūlana koʻikoʻi.
Ke kūʻē kemika
Ma ke ʻano o ke kūpaʻa kemika, hana maikaʻi ʻo NBR i nā kaiapuni i loaʻa nā aila a me nā wahie. Ma muli o kona hiki ke kū'ē i nā huahana i hoʻokumuʻia i kaʻaila, hoʻohana pinepineʻia ka NBR i kaʻoihana kaʻa no nā hoses wahie, O-rings, a me nā sila. Eia nō naʻe, ʻaʻole maikaʻi ke kūʻē ʻana o NBR i nā mea hoʻoheheʻe polar, nā ʻakika, a i ʻole nā kumu, hiki ke hoʻohū a hoʻohaʻahaʻa paha.
ʻO ka EPDM, ma ka ʻaoʻao ʻē aʻe, kūpaʻa loa i ka wai, ka mahu, a me nā ʻano kemika nui, me nā waikawa a me nā kumu. ʻO kēia ka mea kūpono no ka ʻoihana hana kemika a no nā noi waho kahi e ʻike pinepine ʻia ai i ka makū. Eia naʻe, ʻaʻole kūpono ʻo EPDM no ka hoʻohana ʻana me nā aila a me nā wahie, no ka mea, pehu a nalowale kona ʻano mechanical.
palapala noi
Hōʻike ka noi o NBR a me EPDM i kāna mau waiwai kūʻokoʻa. Hoʻohana nui ʻia ʻo NBR i nā ʻōnaehana wahie, gaskets a me nā sila i ke kahua kaʻa, a me nā noi ʻoihana e like me nā sila hinu a me nā hoses. ʻO kona pale ʻana i ka aila he mea nui ia i nā wahi i ʻike ʻia i nā huahana petroleum.
ʻO ka hoʻohālikelike, ʻoi aku ka maikaʻi o ka EPDM no nā noi e koi ana i ka pale ʻana i ke aniau, e like me ka uhi ʻana, nā sila puka makani, a me ka wehe ʻana i ka wā kaʻa. ʻO kona kūpaʻa ʻana i ka UV a me ka ozone ka mea kūpono no ka hoʻohana ʻana i waho, e hōʻoiaʻiʻo ana i kona lōʻihi a me ka hana ʻana i nā kūlana paʻakikī.
I ka hōʻuluʻulu manaʻo, pili ka koho o nā mea NBR a me EPDM i nā pono noi kikoʻī. ʻO ka NBR ka mea i koho ʻia no ka ʻaila a me ka pale ʻana i ka wahie, ʻoiai ʻoi aku ka maikaʻi o ka EPDM i nā noi e koi ana i ke kū ʻana o ka wā a me ka ozone. ʻO ka hoʻomaopopo ʻana i nā ʻokoʻa o ka haku mele ʻana, nā waiwai, ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa kemika, a me nā noi e kōkua i nā mea hana a me nā mea ʻenekinia e hoʻoholo i ka ʻike i ke koho ʻana i ka mea kūpono e hoʻokō i kā lākou pono.
Loaʻa iā Kingflex nā huahana insulation NBR a me EPDM. Inā he nīnau kāu, e ʻoluʻolu e hoʻouna i ka nīnau i ka hui Kingflex i kēlā me kēia manawa.
Ka manawa hoʻouna: Mei-15-2025
