Polyisobutylene (PIB)

Polyisobutylene (PIB)He mea ʻono ʻole, ʻono ʻole, mānoanoa a hapa paʻa paha ka Polyisobutylene, kūpaʻa wela, kūpaʻa oxygen, kūpaʻa ozone, kūpaʻa i ke aniau, kūpaʻa ultraviolet, kūpaʻa waikawa a me alkali a me nā kemika ʻē aʻe. He homopolymer isobutylene kala ʻole, ʻala ʻole, ʻaʻohe ʻona ka Polyisobutylene. Ma muli o nā ʻano hoʻomākaukau like ʻole a me nā kūlana ʻenehana, ʻokoʻa ka nui o ka polyisobutylene molekala ma kahi ākea. ʻO ka hapa nui o ke kaumaha molekala o ka huahana e hiki aku ma mua o 10,000 a 200,000 e hoʻololi ʻia mai kahi wai mānoanoa i kahi hapa paʻa, a laila e hoʻololi i kahi elastomer e like me ka rubber. Kūpaʻa ka Polyisobutylene i ka waikawa, alkali, paʻakai, wai, ozone a me ka ʻelemakule, a he paʻa ea maikaʻi loa a me ka insulation uila.

Nā waiwai kemika:ʻAʻohe kala a hiki i ka wai viscous melemele māmā a i ʻole ka semisolid rubbery elastic (ʻo ke kaumaha molekala haʻahaʻa he gelatinous palupalu, ʻo ke kaumaha molekala kiʻekiʻe he ductile a elastic). ʻAʻohe ʻala, ʻaʻohe ʻala a ʻala iki paha. ʻO ke kaumaha molekala awelika he 200,000 ~ 87 miliona. Hoʻoheheʻe ʻia i loko o ka benzene a me diisobutyl Chemicalbook, hiki ke hui pū ʻia me ka polyvinyl acetate, wax, a pēlā aku, ʻaʻole hoʻoheheʻe ʻia i ka wai, ka waiʻona a me nā mea hoʻoheheʻe polar ʻē aʻe. Hiki iā ia ke hana i ke kō gum i ka palupalu maikaʻi loa i ka mahana haʻahaʻa, a he plasticity kekahi i ka mahana kiʻekiʻe e hana ai no nā hemahema o ka polyvinyl acetate i ke anuanu, ke anuanu wela a me ka palupalu nui i ka wā e hālāwai ai me ka mahana waha.

Nā noi:Ua kaulana ʻo PIB no kona mau waiwai sila a me ka hoʻopili maikaʻi loa, kahi i hoʻohana pinepine ʻia i nā mea hoʻopili, nā uhi, a me nā mea hoʻopaʻa. ʻO nā waiwai like me ka laholio o PIB e lilo ia i koho maikaʻi loa no nā noi sila a me ka hoʻopaʻa ʻana, no ka mea, kōkua ia i ka hāʻawi ʻana i kahi pilina ikaika a paʻa i nā hoʻonohonoho he nui. Ma waho aʻe o kāna hoʻohana pono ʻana, hoʻohana pinepine ʻia ʻo PIB i nā mea hoʻonani a me nā mea mālama pilikino ma muli o kona mau waiwai solubility maikaʻi loa. Hoʻohui pinepine ʻia ka mea me nā mea ʻē aʻe e hana i nā huahana me kahi ʻano a me ka manaʻo kū hoʻokahi.

He nui nā ʻano hana o ka PIB i ka ʻoihana meaʻai. Hoʻohana pinepine ʻia ka mea ma ke ʻano he mea hoʻomānoanoa, mea hoʻopaʻa, a me ka emulsifier i nā meaʻai i hana ʻia. Hiki i ka PIB ke kōkua i ka hoʻomaikaʻi ʻana i ke ʻano a me ke kūlike o nā huahana e like me ka ice cream, ka chewing gum, a me nā mea i hoʻomoʻa ʻia. ʻO ka versatility o PIB e lilo ia i mea nui no nā mea hana i ka ʻoihana meaʻai.

Hoʻohana nui ʻia ka PIB i ka ʻoihana lapaʻau. ʻO nā waiwai ʻawaʻawa ʻole o ka mea e kūpono ai no ka hoʻohana ʻana i nā noi lapaʻau. Hoʻohana pinepine ʻia ka mea ma ke ʻano he mea hoʻopaʻa i nā lāʻau pale, a me kahi mea hoʻohui i nā lāʻau lapaʻau he nui. ʻO ke ʻano hydrophobic o ka PIB e kōkua iā ia e hoʻopili i ka ʻili, e lilo ia i mea pono i ka hana ʻana i nā mea hoʻopili lapaʻau.

Nā ʻano:Loaʻa iā Polyisobutylene nā ʻano kemika o nā hui hydrocarbon saturated, a ʻo ka hui methyl kaulahao ʻaoʻao he hoʻolaha symmetrical paʻa, he polymer kū hoʻokahi. ʻO ke kūlana hōʻuluʻulu a me nā ʻano o ka polyisobutylene e pili ana i kona kaumaha molekala a me ka hoʻolaha kaumaha molekala. Ke kau ka awelika o ke kaumaha molekala viscosity ma ka pae o 70000 ~ 90000, hoʻololi ka polyisobutylene mai kahi wai huli i kahi paʻa elastic. Ma keʻano laulā, e like me ka nui o ke kaumaha molekala o ka polyisobutylene ua māhele ʻia i loko o kēia mau moʻo: polyisobutylene kaumaha molekala haʻahaʻa (helu awelika kaumaha molekala =200-10000); polyisobutylene kaumaha molekala waena (helu awelika kaumaha molekala = 20000-45,000); polyisobutylene kaumaha molekala kiʻekiʻe (helu awelika kaumaha molekala = 75,000-600,000); polyisobutylene kaumaha molekala kiʻekiʻe loa (helu o ka awelika kaumaha molekala ʻoi aku ma mua o 760000).

1. Paʻa ʻana o ka ea

ʻO kekahi o nā ʻano koʻikoʻi o ka polyisobutylene ʻo ia kona paʻa ʻana i ka ea. Ma muli o ke alo o ʻelua mau hui methyl i pani ʻia, lohi ka neʻe ʻana o ke kaulahao molekala a liʻiliʻi ka nui manuahi. ʻO ka hopena kēia i kahi coefficient diffusion haʻahaʻa a me ka permeability kinoea.

2. Ka hiki ke hoʻoheheʻe ʻia

Hoʻoheheʻe ʻia ka Polyisobutylene i loko o ka hydrocarbon aliphatic, ka hydrocarbon ʻala, ka gasoline, ka naphthene, ka ʻaila mineral, ka hydrocarbon chlorinated a me ka carbon monosulfide. Hoʻoheheʻe hapa ʻia i loko o nā waiʻona kiʻekiʻe a me nā tīhi, a i ʻole pehu i loko o nā waiʻona, ethers, monomers, ketones a me nā mea hoʻoheheʻe ʻē aʻe a me nā aila holoholona a me nā mea kanu, piʻi ke kiʻekiʻe o ka pehu ʻana me ka hoʻonui ʻana o ka lōʻihi o ke kaulahao kalapona solvent; Hoʻoheheʻe ʻole ʻia i loko o nā waiʻona haʻahaʻa (e like me ka methanol, ethanol, isopropyl alcohol, ethylene glycol a me coethylene glycol), ketones (e like me ka acetone, methyl ethyl ketone) a me ka waikawa acetic glacial.

3. Ke kū'ē kemika

Kūpaʻa ka Polyisobutylene i ka waikawa a me ka alkali. E like me ka ammonia, ka waikawa hydrochloric, 60% waikawa hydrofluoric, ka hopena wai acetate kēpau, 85% waikawa phosphoric, 40% sodium hydroxide, ka wai paʻakai saturated, 800} waikawa sulfuric, 38% waikawa sulfuric + 14% ka erosion waikawa nitric. Eia naʻe, ʻaʻole hiki iā ia ke kūʻē i ka erosion o nā oxidants ikaika, nā oxidants nāwaliwali wela (e like me 60% potassium permanganate), kekahi mau waikawa organik i hoʻopaʻa ʻia me ka wela (e like me 373K acetic acid) a me nā halogens (fluorine, chlorine, wao nahele).

Hoʻopili ʻana: pahu 180KG

Ka mālama ʻana: E mālama i kahi maloʻo, ea, a me kahi anuanu me ka pale o ka lā i ka wā e lawe ʻia ai.

I ka hopena, he mea waiwai nui ka PIB me nā noi he nui i nā ʻoihana like ʻole. ʻO kona mau waiwai sila a me ka hoʻopili maikaʻi loa, a me kona solubility a me ka versatility, e kūpono ia no nā noi i loko o nā mea hoʻonani, mālama pilikino, meaʻai, a me nā ʻoihana lapaʻau. Ma ke ʻano he mea hoʻolako alakaʻi o PIB, ua hoʻolaʻa mākou i ka hāʻawi ʻana i kā mākou mea kūʻai aku me nā huahana a me nā lawelawe kiʻekiʻe loa e hoʻokō i kā lākou mau pono ʻoihana.