ʻO ka polymer Carboxyl-terminated butadiene nitrile (CTBN) he elastomer me ke kūpaʻa mechanical, thermal a me ke kemika maikaʻi loa. ʻO kēia mau waiwai kūikawā e hoʻolilo iā CTBN i mea hoʻohana nui ʻia ma nā ʻoihana like ʻole. Ma kēia ʻatikala, e ʻimi mākou i ke ʻano o ka carboxyl-terminated butadiene nitrile a me kāna mau noi ma nā ʻano like ʻole.
ʻO ka butadiene nitrile i hoʻopau ʻia me ka carboxylhe copolymer ia o ka butadiene a me ka acrylonitrile e hana ana i kahi kaʻina hana carboxylation i ka wā o ke kaʻina hana. Hoʻokomo kēia kaʻina hana i nā hui hana carboxyl i loko o ke kaulahao polymer, e hoʻonui ana i kona mau waiwai elastic. Loaʻa i ka copolymer hopena ke kaumaha molekala kiʻekiʻe, ka helu polydispersity haʻahaʻa, a me ka solubility maikaʻi i nā mea hoʻoheheʻe organik like ʻole.
Ua ʻike ʻia nā polymers butadiene nitrile i hoʻopaʻa ʻia me ka carboxyl no ko lākou kūpaʻa maikaʻi loa i ka wela, nā aila, nā wahie, nā wai hydraulic a me nā kemika ʻē aʻe he nui. ʻO kona hiki ke kū i nā mahana koʻikoʻi mai -40°C a i 150°C, me kona kūpaʻa maikaʻi loa i ka ozone a me ke aniau, e lilo ia i mea kūpono no nā noi koi.
ʻO kekahi o nā hoʻohana nui o ka carboxyl-terminated butadiene nitrile ma ka ʻoihana aerospace. Hoʻohana pinepine ʻia ia ma ke ʻano he mea hoʻoikaika no nā resins epoxy i hoʻohana ʻia i ka hana ʻana o nā ʻōnaehana composite mokulele. ʻO ka hoʻohui ʻana o CTBN hoʻomaikaʻi i ke kūpaʻa hopena, ka paʻakikī haki a me ke kūpaʻa holoʻokoʻa o kēia mau composites. ʻO kona kūpaʻa wela e hiki ai iā ia ke mālama i kona mau waiwai mechanical a hiki i nā kiʻekiʻe kiʻekiʻe a i ka wā o nā loli wela wikiwiki.
ʻO kekahi hoʻohana koʻikoʻi o ka carboxyl-terminated butadiene nitrile i loko o ka ʻoihana kaʻa. Hoʻohana pinepine ʻia ʻo CTBN ma ke ʻano he mea nui i nā uhi, nā mea hoʻopili a me nā mea hoʻopaʻa no nā ʻāpana kaʻa. ʻO kona kūpaʻa maikaʻi loa i ka ʻaila, ka wahie a me ke kemika, i hui pū ʻia me kona maʻalahi a me ke kūpaʻa, e lilo ia i mea kūpono no nā gaskets, O-rings, sila a me nā diaphragms. Kōkua ia i ka hōʻoia ʻana i ka hana kūpono a me ka lōʻihi o nā ʻāpana i nā ʻenekini, nā hoʻoili a me nā ʻōnaehana hydraulic.
Loaʻa pū ka pōmaikaʻi o ka ʻoihana uila mai nā waiwai kūikawā o nā carboxyl-terminated butadiene nitriles. Hoʻohana nui ʻia kēia elastomer i ka hana ʻana i nā mea hoʻopaʻa uwea a me nā mea uhi. Hāʻawi nā polymers CTBN i ke kūpaʻa maikaʻi loa i ka makū, ka ʻaila a me nā kemika, a me ka ikaika dielectric kiʻekiʻe a me ke kūpaʻa wela. ʻO kēia mau waiwai e lilo ia i mea kūpono no ka hōʻoia ʻana i ka palekana a me ka hilinaʻi o nā ʻōnaehana uila.
Ma waho aʻe o nā ʻoihana i ʻōlelo ʻia ma luna, ka nitrile butadiene i hoʻopau ʻia me ka carboxylhoʻohana ʻia hoʻi i ka hana ʻana o nā pena, nā mea hoʻopili a me nā mea hoʻopaʻa, kahi e pono ai kona kūlike me nā ʻano mea hoʻoheheʻe organik like ʻole. Hoʻohana ʻia hoʻi i ka hoʻokumu ʻana o nā hui rubber hana kiʻekiʻe, e hāʻawi ana i ka hoʻonui ʻana i ke kūpaʻa hopena a me ka elasticity.
I ka hōʻuluʻulu manaʻo, he elastomer multifunctional ʻo carboxybutadiene nitrile me ke kūpaʻa mechanical, thermal a me ke kemika maikaʻi loa. Ua hōʻoia ʻia kona ʻano laulā o nā noi ma ka aerospace, automotive, uila a me nā ʻoihana ʻē aʻe i kona hilinaʻi a me ka pono. I ka holomua ʻana o ka ʻenehana a me ke koi ʻana o ka ʻoihana i nā mea hana kiʻekiʻe, ke hoʻomau nei ʻo CTBN i ka ulu a hāʻawi i nā ʻoihana like ʻole, e lilo ia i mea waiwai nui no nā noi he nui.
Ka manawa hoʻouna: ʻOkakopa-20-2023