Nā hiʻohiʻona a me ka papa hana o ka Nitrile Rubber

ʻO ka wehewehe kikoʻī o nā ʻano o ka nitrile rubber

He copolymer o ka butadiene a me ka acrylonitrile ka nitrile rubber, a he hopena koʻikoʻi kona maʻiʻo acrylonitrile i hoʻohui ʻia i kona mau waiwai mechanical, nā waiwai adhesive, a me ka pale wela. Ma ke ʻano o nā ʻano o ka butadiene a me ka acrylonitrile monomers, ʻoi aku ka nāwaliwali o ka polarity o ka butadiene, ʻoiai ʻoi aku ka ikaika o ka polarity acrylonitrile. No laila, ʻoi aku ka nui o ka acrylonitrile ma ke kaulahao nui o ka nitrile rubber, ʻoi aku ka maikaʻi o ka maʻalahi o ke kaulahao nui. ʻO ke kiʻekiʻe o ka wela haʻahaʻa haʻahaʻa haʻahaʻa, ʻoi aku ka maikaʻi o ka hana kūʻē haʻahaʻa haʻahaʻa; Ma ka ʻaoʻao ʻē aʻe, hiki i ka acrylonitrile ke kūpaʻa wela maikaʻi no ka mea i ka wā o ka hoʻomehana ʻana, hiki i ka acrylonitrile i loko o ka nitrile rubber ke hana i nā mea hiki ke hoʻoheheʻe ʻia i ka waiʻona e pale ai i ka hoʻohaʻahaʻa ʻana i ka thermal oxidative degradation. No laila, hoʻonui ka pale wela o ka nitrile rubber me ka piʻi ʻana o ka ʻike acrylonitrile; I kēia manawa, ma muli o ke kumu polarity o ka acrylonitrile, hoʻonui i ka ʻike o ka acrylonitrile hiki ke hoʻomaikaʻi i ka ikaika adhesive o ka nitrile rubber. No laila, he mea nui e hoʻāʻo i ka ʻike o ka acrylonitrile paʻa i loko o ka nitrile rubber.

He hopena koʻikoʻi ka ʻike o ka acrylonitrile i ka hana o NBR. ʻO ka maʻiʻo acrylonitrile o ka acrylonitrile nitrile rubber maʻamau ma waena o 15% a me 50%. Inā piʻi ka ʻike acrylonitrile ma luna o 60%, e paʻakikī, e like me ka ʻili, a ʻaʻohe ona waiwai.

1. 'Aila kū'ē a me ka'ūhehe'e kū'ē: Nitrile rubber i aila kū'ē i ka maʻamau. ʻOi aku ke kūpaʻa o ka lāʻau Nitrile i ka aila ma muli o ka aila, benzene, a me nā mea hoʻoheheʻe non-polar ʻē aʻe ma mua o ka lāʻau maoli, styrene butadiene rubber, butyl rubber, a me nā mea ʻē aʻe non-polar rubbers, akā ʻoi aku ka maikaʻi ma mua o ka polar chlorinated rubber. Eia nō naʻe, ʻaʻole maikaʻi ke kūʻē ʻana o ka lāʻau nitrile i nā aila polar a me nā mea hoʻoheheʻe (e like me ka ethanol), akā maikaʻi ʻole ke kūʻē ʻana i ka ʻaila polar ʻole.

2. Nā hiʻohiʻona hana kino: ʻO ka nitrile rubber kahi ʻano hana maʻamau o nā copolymers nitrile ʻaʻole i hoʻoheheʻe ʻia ma lalo o ka haʻalulu. No laila, ua like ka waiwai kino a me ka mechanical o ka nitrile rubber vulcanized rubber me ka styrene nitrile rubber, haʻahaʻa loa ma mua o ka lāʻau maoli. Ma hope o ka hoʻohui ʻana i nā mea hoʻopihapiha e like me ke kalapona ʻeleʻele a me ka resin phenolic, hiki i ka ikaika tensile o ka nitrile vulcanized rubber ke piʻi i ke kiʻekiʻe o ka lāʻau kūlohelohe, maʻamau ma kahi o 24.50mpa. I ka piʻi ʻana o ka polarity maʻiʻo o ka NBR, hoʻemi ka maʻalahi o ke kaulahao macromolecular, piʻi ka ikaika atomi ma waena o nā molekala, hoʻemi ʻia nā paʻa pālua, a ʻaʻole i hoʻopiha ʻia ke kaulahao macromolecular, ka hopena o nā loli hana. Aia ka ʻike ACN ma waena o 35% a me 40%, ʻo ia ka wahi koʻikoʻi no ka hoʻololi ʻana o ka hoʻoemi, elasticity, a me ka paʻakikī ma 75 ℃. Inā hoʻokō ka pale ʻaila i nā koi, pono e hoʻohana ʻia nā ʻano me ACN ma lalo o 40% e like me ka hiki. ʻOi aku ka liʻiliʻi o ka elasticity o ka rubber nitrile ma mua o ka rubber maoli a me ka styrene butadiene rubber. Pili loa ka elasticity o NBR i ka mahana. Ke hoʻohālikelike ʻia me NBR, ʻoi aku ka nui o ka piʻi ʻana o ka mahana a me ka elasticity. No laila, kūpono loa ka nitrile rubber no ka hana ʻana i nā mea haʻalulu me ke kūpaʻa ʻaila kiʻekiʻe. ʻO nā hiʻohiʻona o ka elasticity o ka nitrile rubber e hoʻololi me ka paʻa ʻana o ka acrylonitrile

3. Breathability: ʻOi aku ka maikaʻi o ka ea Nitrile rubber ma mua o ka lāʻau maoli a me ka styrene butadiene rubber, akā ʻaʻole maikaʻi e like me ka polysulfide rubber, e like me ka butyl rubber.

4. Haʻahaʻa wela hana: Nitrile rubber i ilihune haʻahaʻa-mahana hana ma ka laulā. ʻO ka hana haʻahaʻa haʻahaʻa e pili ana i ka ʻike o ka acrylonitrile, a piʻi ka mahana hoʻololi aniani me ka piʻi ʻana o ka ʻike acrylonitrile. Hiki iā ia ke hoʻemi i ka mahana hoʻololi aniani o ka nitrile rubber a hoʻomaikaʻi i kāna hana haʻahaʻa haʻahaʻa.

5. Ke kū'ē i ka wela: 'Oi aku ka maika'i o ka pale wela ma mua o ka lā'au maoli a me ka styrene butadiene rubber. Ma ke koho ʻana i ke ʻano kūpono, hiki ke hoʻohana mau ʻia nā huahana nitrile rubber ma 120 ℃; Hiki ke pale i ka aila wela ma 150 ℃; Ma hope o ka hoʻomoʻa ʻana i ka ʻaila ma 191 ℃ no 70 mau hola, hiki nō iā ia ke kūlou. 6. Ke kū'ē o ka ozone: He maika'i ke kū'ē ozone i ka nitrile rubber a ho'omaika'i 'ia ma ka ho'ohui 'ana i nā mea kū'ai ozone. Eia nō naʻe, ʻo nā huahana i hui pū ʻia me ka aila i ka wā e hoʻohana ai, hiki ke hoʻoneʻe i ka mea kūʻē ozone a nalowale kona kūʻē ozone. Hoʻohuiʻia me PVC, he mea nui ka hopena.

7. Ke kū'ē i ka wai: Ua'oi aku ka maika'i o ka wai kū'ē i ka nitrile rubber. ʻOi aku ka kiʻekiʻe o ka acrylonitrile, ʻoi aku ka maikaʻi o kona kūpaʻa wai.

8. Uila insulation hana: Nitrile rubber i ilihune uila hana insulation ma muli o kona polarity. No ka semiconductor rubber a ʻaʻole pono e hoʻohana ʻia ma ke ʻano he mea insulation.

9. Ke kū'ē kū'ē: NBR me kaʻole o nā mea kū'ē kū'ē i kaʻelemakule maikaʻi loa,ʻoiaiʻo NBR me nā mea kū'ē kū'ē iʻoi aku ka maikaʻi o kaʻelemakule a me ka pale wela ma mua o ka'ōpala maoli. Ma hope o ka ʻelemakule thermal oxidative, e emi nui ana ka ikaika tensile o ka ʻōpala maoli, akā ʻo ka emi ʻana o ka nitrile rubber he liʻiliʻi loa.

ʻO ke kūpaʻa wela o ka nitrile rubber e like me kona kūpaʻa kahiko. I ka makahiki L0000H ma 100 ℃, hiki i kona elongation ke ʻoi aku ma mua o 100%. Hiki ke hoʻohana ʻia nā huahana nitrile rubber no kahi manawa pōkole ma 130 ° C a hiki ke hoʻohana ʻia i nā mahana kiʻekiʻe me ka ʻole o ka oxygen. No laila, ʻoi aku ka maikaʻi o ka pale wela o ka nitrile ma mua o ka lāʻau maoli a me ka styrene butadiene rubber. ʻOi aku ma mua o ka chloroprene rubber. ʻO ka lāʻau Nitrile ka like o ka wā a me ka pale ozone e like me ka lāʻau maoli, akā haʻahaʻa iki ma mua o ka lāʻau maoli. ʻO ka hoʻohui ʻana i ka polyvinyl chloride i ka nitrile rubber hiki ke hoʻomaikaʻi i kona kū ʻana i ka wā a me ka pale ozone.

10. Ke kū'ē i ka hoʻoheheʻe ʻana:

Hiki ke hoʻopōʻino ʻia ka lāʻau nitrile ma lalo o ka radiation nuklea, e alakaʻi ana i ka piʻi ʻana o ka paʻakikī a me ka emi ʻana o ka elongation. Eia nō naʻe, ke hoʻohālikelike ʻia me nā ʻāpana synthetic ʻē aʻe, ʻoi aku ka liʻiliʻi o ka NBR e ka radiation, a me ka NBR me kahi acrylonitrile maʻiʻo o 33% -38% maikaʻi ka pale ʻana i ka radiation. Ma hope o ka radiation nuklea, hiki ke hoʻonui ʻia ka ikaika tensile o NBR me ka acrylonitrile kiʻekiʻe e 140%. ʻO kēia no ka mea e hoʻohaʻahaʻa ʻia ka NBR me ka haʻahaʻa acrylonitrile ma lalo o ka radiation, ʻoiai ʻo NBR me ka ʻike acrylonitrile kiʻekiʻe e hana i ka hopena crosslinking ma lalo o ka radiation nuklea.

Papa Hana o ka Nitrile Rubber

Nā waiwai waiwai o ka lāʻau synthetic maʻamau