Ifu ya aluminiyumu ya hydroxide nziza cyane ifite imirimo myinshi nko kugabanya umuriro, gukuraho umwotsi no kuwuzuza, kandi ishobora gutanga ingaruka zo kugabanya umuriro hamwe na fosifore n'ibindi bintu. Ni ifu ikomeye yo kurengera ibidukikije mu nganda z'ikoranabuhanga, imiti, insinga, plastiki, kabutike n'izindi.
Hydroxide ya aluminiyumu ni umuti ugabanya umuriro mu buryo bw’umwimerere, kugira ngo ugere ku ngaruka nziza ku muti ugabanya umuriro, ingano y’umuti igomba kuba irenga 40% (ingano yose), imwe ikagera kuri 60%, ariko ingano y’umuti mwinshi ntigira ingaruka zikomeye ku miterere y’ibikoresho gusa, ahubwo inatuma imikorere yo gusohora no gutunganya ibintu irushaho kuba mibi.
Kubwibyo, kugira ngo ifu ya hydroxide ya aluminiyumu nziza cyane ikoreshwe cyane mu bikoresho bigabanya umuriro nka polyolefin, hagomba kuba hari ifu ya hydroxide ya aluminiyumu ihindura ubuso, kugira ngo hongerwe imiterere y’ubuso n’imiti, hongerwe ifu ya hydroxide ya aluminiyumu nziza cyane, uburinganire bwa polymer cyangwa resin mu bintu bifatika n’uburyo ikwirakwira mu bintu bishya, kugira ngo hongerwe imbaraga z’ibikoresho n’imikorere yabyo yose.
1. Uburyo bwo guhindura ubuso bukunze gukoreshwa mu gutunganya aluminium hidroksidi
(1) uburyo bwo guhuza silane
Hari ubwoko burenga ijana bw'ibikoresho byo guhuza silane, muri byo harimo ibikoresho byo guhuza silane by'ubwoko bumwe n'ubukorano ari byo bihamye cyane. Uburambe bw'ibikoresho byo guhuza silane by'ubwoko bumwe n'ubukorano buri hagati y'icyuma n'icyuma. Uretse kongera imiterere y'ibikoresho, ibikoresho byo guhuza silane by'ubwoko bumwe bishobora no kunoza imiterere y'amashanyarazi no kwirinda ubushuhe bw'ibicuruzwa.
(2) ikintu gihuza zirconium
Itsinda ry’ibikoresho byo guhuza zirconium birimo zirconium aluminate, ingano nto ya molekile ya polymer idakora mu ruhererekane rw’ingenzi rwa molekile, ifite ubwoko bubiri bw’uduce duto twa ligand, amenyo afite imiterere myiza ya hydroxyl, indi amenyo ahuza imiterere myiza ya organic, ifu ya aluminium hydroxide superfine aluminiyumu hydroxide ifite ingaruka nziza zahinduwe.
(3) aside iri hejuru y'ibinure n'imyunyu yazo
Mu miterere ya molekile ya aside irike nyinshi n'umunyu wazo, impera imwe ni itsinda rya alkyl rirerure, naho impera indi ni itsinda rya karboxyl n'umunyu wayo w'icyuma ushobora gukorana n'amatsinda y'imikorere ya aluminium hydroxide. Gukoresha ifu ya aluminium hydroxide ikoze neza cyane ukoresheje aside irike nyinshi n'umunyu wayo bishobora kunoza ubufatanye hagati y'ifu ya aluminium hydroxide ikozwe neza cyane na polymer molecule, no kunoza imikorere y'imashini n'uburyo itunganywa.
(4) aside organic zidafite uburumbuke
Aside organic zisanzwe zidafite aside nyinshi ni: aside acrylic, aside methacrylic, aside cinnamic, nibindi. Muri rusange, uko aside ikomeye, niko byoroha gukora ionic bond, bityo hitamo byinshi: aside acrylic na aside methacrylic.
Ubwoko butandukanye bwa aside organic bushobora gukoreshwa bwonyine, bushobora no gukoreshwa mu buryo buvanze, kuvura iyoni z'icyuma za alkali zirimo ifu ya aluminiyumu hydroxide ikoze mu buryo bwa ultrafine, ingaruka ziba nziza kurushaho.
(5) organosilicon
Organosilicon ya Macromolecule, izwi kandi nka amavuta ya silikoni, ni ubwoko bwa polymer ihuzwa n'itsinda ry'ibinyabuzima kuri atome ya silikoni hakoreshejwe uruhererekane rw'imiyoboro ya silikoni ya ogisijeni (si-o-si) nk'igikanka. Ibikunze gukoreshwa ni polymethylsiloxane irimo hydrogen, polydimethylsiloxane ya hydroxyl-terminated, nibindi.
2. Uburyo bwo guhindura ubuso bwa hydroxide ya aluminiyumu nziza cyane
Kugeza ubu, uburyo bwo guhindura ubuso bw'ifu ya aluminium hydroxide ikoze mu buryo bwa ultrafine ahanini ni ubwumye kandi butose.
(1) guhindura imiterere y'umukungugu
Muri ubu buryo, ifu ya hydroxide ya aluminiyumu yahinduwe ishyushywa kugeza ku bushyuhe runaka, hanyuma modifier igwa buhoro buhoro mu ifu ya hydroxide ya aluminiyumu yihuta cyane, kandi ibicuruzwa bihagarikwa ngo bipakishwe nyuma y’igihe runaka.
Ibyiza byo guhindura ibyuma byumye ni bike cyane ku bikoresho no koroshya imikorere. Ingorane ni uko imbaraga z'abakozi ari nyinshi, igipimo cyo gusiga ifu ya aluminiyumu hidroksidi kiri hasi.
(2) guhindura amazi
Guhindura amazi mu buryo butose ni mu gikorwa cyo gukora ifu ya aluminium hydroxide nziza cyane, gukora ururenda rwa aluminium hydroxide nyuma yo kuyungurura, gukaraba, gusya keke, mu bushyuhe runaka bw'ururenda nyuma yo kongeramo modifier, kuvanga igihe runaka, kuyungurura, kumisha no gusya ipaki.
Ibyiza byo guhindura amazi mu buryo butose ni imbaraga nke z'abakozi, nta mwanda uhumanya ikirere, umusaruro mwinshi, igipimo cyo gusiga ifu ya aluminiyumu hidroksidi, 20-30%, ingaruka zo guhindura ni nyinshi kandi zihamye. Ugereranyije no guhindura amazi mu buryo butose, guhindura amazi mu buryo butose bifite inzira ndende kandi bisaba ibikoresho byinshi. Bitewe n'ibyiza byo guhindura amazi mu buryo butose, bigenda bisimbura buhoro buhoro uburyo bwo gukora amazi mu buryo butose.
3. Uburyo bwo gusuzuma ingaruka zo guhindura ubuso bwa hydroxide ya aluminiyumu ikoze mu buryo bwa ultrafine
(1) ikizamini cy'igipimo cyo kwinjiza amavuta
Igipimo cyo kwinjiza amavuta gikoreshwa cyane cyane mu gupima ingano y'amavuta ya castor akenewe iyo ingano runaka y'ifu ya Al (OH) 3 igeze ku kwinjira mu buryo buhagije, kandi gikoreshwa mu kugena ingano y'umusemburo ukenewe iyo ingano runaka y'ifu ya Al (OH) 3 igeze ku kwinjira mu buryo buhagije.
Uburyo bwo kuvumbura ni ubu bukurikira: ifu ya alumina hydroxide nziza cyane irapimwa kandi icyitegererezo cyumye kingana na garama 10, gishyirwa mu gikombe, gishyirwamo amavuta ya castor hamwe na burette, hanyuma kikavangwa buhoro buhoro n'inkoni y'ikirahure kugira ngo hakorwe amavuta ya castor hanyuma icyitegererezo cyinjizwe mu mupira neza. Ingano y'amavuta ya castor yakuwe kuri garama 100 za hydroxide ya aluminiyumu yarabazwe, ni ukuvuga igipimo cyo kwinjiza amavuta ya aluminium hydroxide ikoze neza cyane.
Nyuma yo guhindura ubuso bw'ifu ya hydroxide ya aluminiyumu, igipimo cyo kwinjiza amavuta kizahinduka ku rugero runaka. Iyo ifu ya hydroxide ya aluminiyumu ikoze neza cyane ihinduwe hakoreshejwe silane coupling agent, igipimo cyo kwinjiza amavuta kizagabanukaho hafi 10%.
(2) Ikizamini cya SEM
Imiterere y'ifu ya aluminium hydroxide ikoze mu buryo bwa ultrafine mbere na nyuma yo kuyihindura yagaragaye hakoreshejwe mikorosikopi ya electron. Uburyo ifu yahinduwe ikwirakwira muri matrix bwari bwiza kuruta ubw'umusaruro utarahinduwe.
(3) Ikizamini cya FTIR
Ishusho ya Fourier infrared spectroscopy (ftir) yakoreshejwe mu gusesengura amatsinda ari ku buso bw'ibicuruzwa. Urugero, ingano ya vinyl - Vi na - Si ishobora kugaragazwa na spectra ya ir ya aluminiyumu hydroxide ifu hamwe n'ubuso butose bwa methyl vinyl silane.
(4) kumenya imiterere y'ibicuruzwa
Ifu ya aluminiyumu ya hydroxide yahinduwe kandi itahinduwe yakoreshejwe mu kugerageza index za cable nka index ya ogisijeni, imbaraga zo gukurura no kurekura igihe habaye ikibazo. Mu kugereranya, byagaragaye ko imiterere y’umuriro n’imikorere y’ibikoresho byahinduwe yarushijeho kuba myiza.
(5) igipimo cyo gukoresha
Igipimo cyo gukora ni igipimo cyo gusuzuma ingaruka zo guhindura ubuso hakoreshejwe gupima ijanisha ry'ingano ya hydroxide ya aluminiyumu ireremba hejuru y'amazi n'ingano yose ya hydroxide ya aluminiyumu nyuma yo kuyihindura. Bitewe n'ubwoko butandukanye bw'ibikoresho byo guhindura ubuso n'uburyo butandukanye bwo kuvura ifu ya hydroxide ya aluminiyumu nziza cyane, zimwe mu fu yahinduwe zizareremba hejuru y'amazi izindi zizarohama.
Nk'imashini ya sodium stearate, guhindura amazi ya titanate, guhindura amazi ya silane yumye nyuma y'ifu ya aluminiyumu ya ultrafine hydroxide, ikimenyetso cy'imikorere gishobora gukoreshwa mu gusuzuma ingaruka z'imikorere; Ariko, silane ikora amazi yahinduwe hakoreshejwe uburyo bw'isuku, naho ifu ya aluminiyumu ya ultrafine hydroxide yahinduwe hakoreshejwe uburyo bw'isuku ya silane yamanukaga mu mazi, bityo ingaruka z'imikorere ntizashoboraga gupimwa hakoreshejwe ikimenyetso cy'imikorere, kandi uburyo bwo gusuzuma neza bwari spectroscopy ya infrared.
Igihe cyo kohereza: 24 Mata-2020