Ka polymerization naoh

Polymers - hui a i ke kiʻekiʻe hakakino kaumaha a hiki i kekahi mau tausani o nā huahelu. Ke polymerization naoh o ke kumu o kēia mea okoa hana a me ka waiwai loaa. Ka mea, eia ma ka haʻahaʻa nuʻa mea nui mau nō, hiki ke hoopalupalu mai ka wā wela, a hiki wawe ka Rose i ka mōlina, e leie aku e loaa huahana o kekahi mau manao a me ka nui like 'ole. Nā polymers i inert i corrosive hana kūpono, e komo uila hō'īpale ka waiwai a ka mea i corrode. Manawa i kona kūlana waiwai, i hiki ke like eaaei ma ke kahua o ka hoʻololi kemikala, ka hoʻohana 'ana i kēia polymeric mea ua mau hoʻonui.

I ka hahana maoli nō kēia a me ka huʻihuʻiʻana o nā huahana o Nine Inch? Iecaianoaaiiuo hele ma nāʻaoʻao.

Kekahi hoopalupalu no au i ka wā wela, a hoopaakiki ka wā ho'ēmi hou. Ia mau mea nā huahana ma muli e hoomakaukau ai i ka wahaheʻe, no ka mea hoike, i ka polymerization naoh o alkenes, a laila, polyethylene a me ka polypropylene. Ka mea, i kapaʻia thermoplastic mea. He mea i 'ano like waiwai like Tewetewe koloriside a me ka polystyrene.

Polymers o kekahi 'ano i mau eʻenaʻena ai wale kekahi manawa, no ka mea, hoopaakiki ma hope o ka huʻihuʻiʻana, a hou mai i hoopalupalu ma lalo o paio hahana maoli nō. Kēia mau mea i kapaia thermosetting, e nā phenol-formaldehyde a urea-formaldehyde kēpau. Thermoplastics a me thermosets i kā lākou mau pono. First hua mai la i ka granular palapala. No ia, ma hope o paio hahana maoli nō, a e hoopalupalu ana i hoomakaukau ikamu o kekahi kinona, akā, ka mea hiki ole e enaena i hana. Ka hope i hua mai la i ka gummy nuipa a.

'etolina polymerization naoh hiki ke kākau 'ia penei: CH2 = CH2 → (-CH2-CH2-) n. Ma lalo o kekahi rula, ma ke alo o ka initiator (ka mea, i ka lokomaikaiia, oxygen ma kinoea a me ka pāʻoihana o ke aloha peroxide i loko o ka aila) i wahi ma waena o kalapona nā'ātoma π-Ka Hawai i nahā i (i ole ia he kaulua, hoopaa) a me ka huina ma waena o N-Nogo helu o ka hana noa radicals. Ke polymerization naoh puka mai ma ka'ano'ē kaulaʻano papa hana. Ke hakakino kaumaha o ka pīlali nā mea pololei e kaukaʻi ma ka helu n, a me kona mahuahua mea ulu. Ma ka hōʻoiaʻana i nā kūlana o ka polymerization naoh, ka hoʻololi kemikala o polyethylene Aʻole loaʻa iā ia nā loaa i kekahi mea me ka makemake ka waiwai: fluidity (a maule inideka), ikaika, nuʻa, dielectric poino tangent, dielectric ikaika, a me na mea e ae.

Hoʻololi kemikala o kiʻekiʻe-puʻe polyethylene a me ka polymerization naoh ua lawe mai i loko o autoclave paha omo reactors ma mahana i ka 300 ° C a me ka manaʻo koikoi o ka 1000 a hiki i 3000 atm. Kēia ke hookuu aku oia i ka weliweli nui o ka wela. Ua Ua wehe 'me ka wela o ka wai i ua lako ai i ka mīkini'ātoma lākeke. Ke degere o ka pololei a pau loa, e hoʻa'ā i ka wai pōpilikia 'ana hilinaʻi nui pili kēia ma luna o ka mea e like ai o ka polymeric mea a me ka kaʻina maluhia. Inā ka wai ua poorly ua holoiʻia, a he nui impurities (e laʻa me, paakiki paʻakai me kalipuna a me ka makanekiuma cations, anions silicicʻakika, chlorine, etc.), ka mīkini'ātoma lākeke hanaia hoʻokomo kālā a me ka mea hiki ke hooheheeia hoʻomaka e corrode. Ma muli o ka loli ma ka mīkini'ātoma paia mānoanoa o ka wela dissipation ma kona ili i haoʻa, a me ka mahana o ka polymerization kūlana i lilo unmanageable. Me ka mea hana keaka ulu o ka'okesaside mahana o ka pīlali i hoʻomaka ai 'ole decomposition me ka luku ana o ka mīkini'ātoma.

Ke polymerization naoh, like me ka hopena o a ka i hana polyethylene, hiki ke lawe wahi i haʻahaʻa ka mahana a me ka puʻe. Akā, i kēia pono o ka hōʻeleu. I loaʻa ka unreacted'etolina, i ua laila hoʻokaʻawaleʻia, a me ka pīlali i pelletized, ka polyethylene hua mai ma lalo o haʻahaʻa puʻe, Haʻalele i ka ka mīkini'ātoma me he lepo lā, a he oiaio, i ka wehe i loko o ka hydrocarbon'ūheheʻe ina ke kiʻekiʻe puʻe polyethylene mai ka mīkini'ātoma like me ka mahele heheʻe i ka Haʻalele i ka. Ka pauka Ua hoʻokaʻawale, mai ka'ūheheʻe, a me nā impurities holoi, mai ka hōʻeleu, a laila, granulated a kuikawā lako a kapa extruder.

Pela, ke polymerization naoh o'etolina i loko o ka hana hoʻohana no ka hoʻololi kemikala o polyethylene. GOST 16338-85 paka haʻahaʻa-puʻe polyethylene slurry a me ka kinoea pae kaha, e like me GOST 16337-77 hookuu me ke kiʻekiʻe-puʻe polyethylene autoclave a omo A hehi ihola au.