Polyisobutylene (PIB)he kala ʻole, ʻono ʻole, non-toxic mānoanoa a semi-solid mea, pale wela, pale ʻana o ka oxygen, pale ʻana o ka ozone, pale ʻana i ka wā, pale ʻana o ultraviolet, kaʻakika a me ke kūpaʻa alkali a me nā kemika ʻē aʻe ka hana maikaʻi.ʻO ka polyisobutylene kahi homopolymer isobutylene kala ʻole, ʻala ʻole, ʻaʻohe mea make.Ma muli o nā ʻano hoʻomākaukau like ʻole a me nā kūlana ʻenehana, ʻokoʻa ka nui o ka molecular Chemicalbook o polyisobutylene ma kahi ākea.ʻO ka hapa nui o ka paona molekala o ka huahana i ʻoi aku ma mua o 10,000 a 200,000 e hoʻohuli ʻia mai kahi wai mānoanoa i semi-paʻa, a laila hoʻololi i kahi elastomer like me ka lāʻau.He kūpaʻa ka Polyisobutylene i ka waika, alkali, paʻakai, wai, ozone a me ka ʻelemakule, a maikaʻi loa ka paʻa ʻana o ka ea a me ka insulation uila.
Nā waiwai kemika:ʻaʻole waihoʻoluʻu a ʻulaʻula melemele wai viscous a i ʻole elastic rubbery semisolid (ʻo ke kaumaha molekala haʻahaʻa he gelatinous palupalu, ʻo ke kaumaha molekala kiʻekiʻe he ductile a elastic).ʻO nā mea ʻala ʻole, ʻala ʻole a ʻala iki paha.ʻO ka awelika molecular kaumaha he 200,000 ~ 87 miliona.Hiki ke hoʻoheheʻe ʻia i loko o ka benzene a me ka diisobutyl Chemicalbook, hiki ke hoʻopili ʻia me ka polyvinyl acetate, wax, etc., insoluble in water, alcohol and other polar solvents.Hiki iā ia ke hana i ka ʻoluʻolu maikaʻi loa o ke kōpaʻa ma ka wela haʻahaʻa, a loaʻa iā ia kekahi plasticity i ka wela kiʻekiʻe e hoʻoponopono ai i nā hemahema o ka polyvinyl acetate i ke anuanu, wela a me ka palupalu nui ke hālāwai me ka wela o ka waha.
Nā noi:ʻIke ʻia ʻo PIB no kāna mau mea hoʻopaʻa maikaʻi a me nā mea hoʻopili, i hoʻohana pinepine ʻia i nā adhesives, coatings, a me sealants.He koho maikaʻi loa ka PIB no ka hoʻopaʻa ʻana a me ka hoʻopaʻa ʻana, no ka mea, kōkua ia i ka hāʻawi ʻana i kahi paʻa ikaika a paʻa i nā hoʻonohonoho lehulehu.Ma kahi o kona hoʻohana pono ʻana, hoʻohana maʻamau ʻia ʻo PIB i nā mea hoʻonaninani a me nā mea mālama pilikino ma muli o kāna mau waiwai solubility maikaʻi loa.Hoʻohui pinepineʻia ka waiwai me nā mea'ē aʻe e hana i nā huahana me kahiʻano kūikawā a me ka manaʻo.
He nui nā noi a PIB i ka ʻoihana meaʻai pū kekahi.Hoʻohana maʻamau ʻia ka mea ma ke ʻano he mānoanoa, stabilizer, a me ka emulsifier i nā meaʻai i hana ʻia.Hiki nō hoʻi iā PIB ke kōkua i ka hoʻomaikaʻi ʻana i ke ʻano a me ka paʻa ʻana o nā huahana e like me ka ice cream, chewing gum, a me nā mea i kālua ʻia.ʻO ka versatility o PIB he mea nui ia no nā mea hana i ka ʻoihana meaʻai.
Hoʻohana nui ʻia ka PIB i ka ʻoihana lapaʻau.ʻO nā waiwai ʻawaʻawa ʻole o ia mea he mea kūpono ia no ka hoʻohana ʻana i nā lāʻau lapaʻau.Hoʻohana pinepine ʻia ka mea ma ke ʻano he stabilizer i nā lāʻau lapaʻau, a me kahi mea hoʻohui i nā lāʻau lapaʻau he nui.ʻO ke ʻano hydrophobic o PIB e kōkua iā ia e pili i ka ʻili, e pono ai i ka hana ʻana i nā lāʻau lapaʻau.
Nā hiʻohiʻona:Loaʻa i ka Polyisobutylene nā waiwai kemika o nā pūhui hydrocarbon saturated, a ʻo ka hui methyl kaulahao ʻaoʻao he paʻa like symmetrical mahele, he polymer kūʻokoʻa.ʻO ke kūlana aggregation a me nā waiwai o ka polyisobutylene e pili ana i kona kaumaha molekala a me ka puunaue kaumaha mole.I ka wā o ka viscosity awelika molecular kaumaha i loko o ka laulā o 70000 ~ 90000, polyisobutylene e hoʻololi mai ka wai hoʻololi i kahi paʻa elastic.ʻO ka mea maʻamau, e like me ka nui o ke kaumaha mole o ka polyisobutylene ua māhele ʻia i kēia moʻo: haʻahaʻa molecular kaumaha polyisobutylene (helu awelika molecular kaumaha = 200-10000);ʻO ka polyisobutylene kaumaha molekala (helu awelika kaumaha mole = 20000-45,000);Polyisobutylene kaumaha mole kiʻekiʻe (helu awelika kaumaha mole = 75,000-600,000);ʻO ka polyisobutylene kaumaha kiʻekiʻe kiʻekiʻe (ka helu o ke kaumaha molekala ma mua o 760000).
1. Paʻa ea
ʻO kekahi o nā hiʻohiʻona koʻikoʻi o ka polyisobutylene ʻo kona paʻa maikaʻi loa.Ma muli o ka loaʻa ʻana o ʻelua pūʻulu methyl i hoʻololi ʻia, ua lohi ka neʻe ʻana o ke kaulahao molekala a liʻiliʻi ka leo manuahi.ʻO kēia ka hopena i kahi coefficient diffusion haʻahaʻa a me ka permeability kinoea.
2. Hoʻoheheʻe
Hiki ke hoʻoheheʻe ʻia ka Polyisobutylene i loko o ka aliphatic hydrocarbon, aromatic hydrocarbon, gasoline, naphthene, mineral oil, chlorinated hydrocarbon a me carbon monosulfide.Hoʻoheheʻe hapa ʻia i loko o nā waiʻona kiʻekiʻe a me nā paʻakai, a i ʻole i pehu ʻia i loko o nā ʻawaʻawa, ethers, monomers, ketones a me nā mea hoʻoheheʻe ʻē aʻe a me nā aila holoholona a me nā mea kanu, piʻi ke degere o ka pehu me ka hoʻonui ʻana o ka lōʻihi o ke kaulahao kalapona solvent;ʻAʻole hiki ke hoʻoheheʻe ʻia i loko o nā waiʻona haʻahaʻa (e like me ka methanol, ethanol, isopropyl alcohol, ethylene glycol a me coethylene glycol), nā ketones (e like me ka acetone, methyl ethyl ketone) a me ka glacial acetic acid.
3. Ke kū'ē kemika
Kūleʻa ka Polyisobutylene i ka waikawa a me ka alkali.E like me ka amonia, ka waikawa hydrochloric, 60% hydrofluoric acid, ke alakaʻi acetate aqueous solution, 85% phosphoric acid, 40% sodium hydroxide, saturated paʻakai wai, 800} sulfuric acid, 38% sulfuric acid + 14% nitric acid erosion, Eia naʻe, ia ʻAʻole hiki ke pale aku i ka hoʻoneʻe ʻana o nā mea hoʻomake ikaika, nā mea hoʻonāwaliwali wela (e like me ka 60% potassium permanganate), kekahi mau mea ʻakika wela (e like me 373K acetic acid) a me nā halogens (fluorine, chlorine, wao nahele).
Hoʻopili: 180KG pahu
Ka mālama ʻana: E kūʻai ma kahi ʻoluʻolu, ea, maloʻo me ka pale o ka lā i ka wā o ka lawe ʻana.
I ka hopena, he waiwai waiwai ka PIB me ka nui o nā noi i nā ʻoihana like ʻole.ʻO kāna mau mea hoʻopaʻa maikaʻi a me nā mea hoʻopili, a me kona solubility a me ka versatility, e kūpono ia no nā noi i loko o nā mea hoʻonaninani, mālama pilikino, meaʻai, a me nā ʻoihana olakino.Ma keʻano he alakaʻi alakaʻi o PIB, ua hoʻolaʻa mākou i ka hāʻawiʻana i kā mākou mau mea kūʻai i nā huahana a me nā lawelawe kiʻekiʻe loa e hoʻokō i kā lākou mau pono o kaʻoihana.
Ka manawa hoʻouna: Iune-19-2023