3,3′,4,4′-Biphenyltetracarboxylic dianhydride CAS: 2420-87-3 3

Hoʻohana

3,3',4,4'-Biphenyltetracarboxylic dianhydride (BPDA)he mea koʻikoʻi ia i ka synthesis organik a he nui nā noi:

Hana ʻana o ka polyimide

• Nā kiʻiʻoniʻoni hana kiʻekiʻe: Hiki iā ia ke hana i kahi hopena polycondensation me nā hui diamine e hana i nā kiʻiʻoniʻoni polyimide. Loaʻa i kēia mau kiʻiʻoniʻoni ke kūpaʻa wela kiʻekiʻe. ʻOiai i loko o kahi ʻano wela kiʻekiʻe ma luna o 200 °C, hiki nō iā lākou ke mālama i nā waiwai mechanical maikaʻi a me ka insulation uila. No laila, hoʻohana pinepine ʻia lākou ma ke kahua aerospace no ka pale ʻana i ka insulation o nā motika a me nā mīkini uila a i ʻole ma ke ʻano he mea kumu no nā papa kaapuni paʻi maʻalahi.
• Nā palakiko ʻenekinia: Loaʻa i nā palakiko ʻenekinia polyimide i hana ʻia ka ikaika kiʻekiʻe, ka paʻakikī maikaʻi, a he kūpaʻa hoʻi i ke komo ʻana. Hiki ke hoʻoheheʻe ʻia lākou e hana i kekahi mau ʻāpana kikoʻī me nā koi koʻikoʻi no nā waiwai mechanical, e like me nā pale liʻiliʻi a puni nā ʻenekini mokulele a me nā ʻāpana hoʻoili i loko o nā uaki mechanical kiʻekiʻe.
• Kahua uhi: ʻO nā uhi polyimide i hana ʻia ma muli o ka BPDA he kūpaʻa koʻikoʻi i ka pala kemika. Ke hoʻopili ʻia i nā paia o loko o nā pahu mālama kemika a me nā reactors, hiki iā lākou ke pale aku i ka ʻino ʻana o nā ʻano waikawa, nā kumu, a me nā mea hoʻoheheʻe organik no ka manawa lōʻihi, e hōʻoiaʻiʻo ana i ke ola lawelawe o nā lako. I ka manawa like, loaʻa iā lākou ke kūpaʻa wela maikaʻi. Ke uhi ʻia ma nā paipu hoʻopau wela kiʻekiʻe a me nā pahu mīkini, ʻaʻole lākou e ʻili maʻalahi ma muli o nā mahana kiʻekiʻe.
• Nā mea fiber: Hoʻohana ʻia ia no ka hana ʻana i nā fiber hana kiʻekiʻe. Loaʻa i nā fiber polyimide i hana ʻia ka ikaika kiʻekiʻe, ka modulus kiʻekiʻe, a me ke kūpaʻa wela maikaʻi loa. Hoʻohana pinepine ʻia lākou e hana i nā lole pale ahi, nā kaula kūikawā no ka aerospace, a me nā mea ʻē aʻe, e hāʻawi ana i ka palekana hilinaʻi no nā limahana a me nā lako i nā kūlana wela kiʻekiʻe a me nā kūlana pilikia kiʻekiʻe.

ʻŌpala a me ka Hoʻouna ʻana

20KG/Drum a i ʻole e like me nā koi a ka mea kūʻai aku.
No nā waiwai maʻamau a hiki ke hāʻawi ma ke kai a me ka lewa

Mālama a me ka mālama ʻana

Ola papa: 24 mahina mai ka lā i hana ʻia ai i loko o ka pahu i wehe ʻole ʻia mua i mālama ʻia i kahi maloʻo a me kahi anuanu, mai ka lā pololei, ka wai.
Hale kūʻai ea, hoʻomaloʻo wela haʻahaʻa, hoʻokaʻawale ʻia mai nā mea hoʻomake a me nā waikawa.