He aha ka carboxyl-terminated butadiene nitrile?

ʻO Carboxyl-terminated butadiene nitrile (CTBN) polymer he elastomer me ke kūpaʻa mechanical, wela a me ke kemika. ʻO kēia mau mea kūʻokoʻa e hana i ka CTBN i mea hoʻohana nui i nā ʻoihana like ʻole. Ma kēia ʻatikala, e ʻimi mākou i ke ʻano o ka carboxyl-terminated butadiene nitrile a me kāna mau hoʻohana ʻana i nā ʻano hana like ʻole.

 Butadiene nitrile i hoʻopau ʻia ka Carboxyl he copolymer o ka butadiene a me ka acrylonitrile e hana ana i ke kaʻina hana carboxylation i ka wā hana. Hoʻokomo kēia kaʻina hana i nā pūʻulu hana carboxyl i loko o ke kaulahao polymer, e hoʻonui ana i kāna mau mea elastic. ʻO ka copolymer ka hopena he paona molekala kiʻekiʻe, haʻahaʻa polydispersity index, a me ka solubility maikaʻi i nā mea hoʻoheheʻe organik.

ʻIke ʻia nā polymers butadiene nitrile i hoʻopau ʻia ʻo Carboxyl no ko lākou kūʻē maikaʻi ʻana i ka wela, nā aila, nā wahie, nā wai hydraulic a me nā mea ʻē aʻe he nui. ʻO kona hiki ke pale aku i nā wela wela mai -40 ° C a 150 ° C, i hui pū ʻia me kāna ozone maikaʻi a me ke kū ʻana o ka wā, e lilo ia i mea kūpono no nā noi koi.

ʻO kekahi o ka hoʻohana nui ʻana o ka carboxyl-terminated butadiene nitrile i loko o ka ʻoihana aerospace. Hoʻohana maʻamau ia ma ke ʻano he mea hoʻoikaika paʻakikī no nā resins epoxy i hoʻohana ʻia i ka hana ʻana i nā hale hoʻokūkū mokulele. ʻO ka hoʻohui ʻana oCTBN  hoʻomaikaʻi i ka pale ʻana i ka hopena, ka paʻakikī haʻihaʻi a me ka lōʻihi holoʻokoʻa o kēia mau composites. ʻO kona kūpaʻa wela e hiki ai iā ia ke mālama i kāna mau waiwai mechanical a hiki i nā kiʻekiʻe kiʻekiʻe a i ka wā e hoʻololi wikiwiki ai ka mahana.

ʻO kekahi noi koʻikoʻi o ka carboxyl-terminated butadiene nitrile aia ma ka ʻoihana kaʻa. Hoʻohana maʻamau ʻia ʻo CTBN ma ke ʻano he kī nui i nā uhi, nā mea hoʻopili a me nā mea hoʻopaʻa no nā ʻāpana kaʻa. ʻO kāna ʻaila maikaʻi loa, wahie a me ka pale kemika, i hui pū ʻia me kona maʻalahi a me ka lōʻihi, e lilo ia i mea kūpono no nā gaskets, O-rings, sila a me nā diaphragms. Kōkua ia e hōʻoia i ka hana kūpono a me ka lōʻihi o nā mea i loko o nā mīkini, nā hoʻoili a me nā ʻōnaehana hydraulic.

Hoʻomaikaʻi pū ka ʻoihana uila mai nā waiwai kūʻokoʻa o ka carboxyl-terminated butadiene nitriles. Hoʻohana nui ʻia kēia elastomer i ka hana ʻana i ka insulation cable a me nā mea sheathing. Hāʻawi ka CTBN polymers i ke kūpaʻa maikaʻi i ka makū, ka aila a me nā kemika, a me ka ikaika dielectric kiʻekiʻe a me ke kūpaʻa wela. Hana kēia mau waiwai 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.carboxyl-terminated butadiene nitrile hoʻohana ʻia i ka hana ʻana i nā pena, nā mea hoʻopili a me nā mea hoʻopaʻa, kahi e ʻoi aku ka maikaʻi o kona kūlike me nā ʻano mea hoʻoheheʻe organik. Hoʻohana pū ʻia ia i ka hoʻokumu ʻana i nā mea hoʻohui kino kiʻekiʻe, e hāʻawi ana i ka hoʻonui ʻana i ka hopena a me ka elasticity.

I ka hōʻuluʻulu ʻana, ʻo carboxybutadiene nitrile he elastomer multifunctional me ke kūpaʻa mechanical, thermal a me kemika. ʻO kāna ākea ākea o nā noi i ka aerospace, automotive, uila a me nā ʻoihana ʻē aʻe i hōʻoia i kona hilinaʻi a me ka pono. Ke piʻi nei ka ʻenehana a me ka ʻoihana e koi ana i nā mea hana kiʻekiʻe, ke hoʻomau nei ʻo CTBN i ka ulu a kōkua i nā ʻoihana like ʻole, e lilo ia i mea waiwai no nā noi he nui.