Nucleating agent ikwiranye na plastiki zuzuye za kristaline nka polyethylene na polypropilene. Muguhindura imyitwarire ya kristu ya resin, irashobora kwihutisha igipimo cya kristu, ikongera ubwinshi bwa kirisiti kandi igateza imbere miniaturizasi yubunini bwa kristu, kugirango bigabanye uruziga kandi bitezimbere umucyo nubuso Ibintu byongera imikorere kumubiri no mubukanishi imitungo nkuburabyo, imbaraga zingana, gukomera, ubushyuhe bwo kugoreka ubushyuhe, kurwanya ingaruka, hamwe no guhangana n’ibikurura.
ongeramo agent nucleating irashobora kongera umuvuduko wa kristalisation hamwe nurwego rwo korohereza ibicuruzwa bya polymer kristaline, ntibishobora kongera umuvuduko wo gutunganya no kubumba, ariko kandi bigabanya cyane ibintu byo gutondekanya ibintu bya kabiri, bityo bikazamura uburinganire bwibicuruzwa .
Ingaruka ya nucleating agent kumikorere yibicuruzwa
Kwiyongera kwa nucleating agent bitezimbere ibintu bya kristalline yibikoresho bya polymer, bigira ingaruka kumubiri no gutunganya ibintu bya polymer.
01 Ingaruka ku mbaraga zingana no gukomera
Kuri kristu ya kirisiti cyangwa igice cya kristaline, kongeramo agent nucleating ningirakamaro mu kongera kristu ya polymer, kandi akenshi bigira ingaruka zishimangira, byongera ubukana bwa polymer, imbaraga zingutu nimbaraga zunama, hamwe na modulus , ariko kurambura kuruhuka muri rusange bigabanuka.
02 Kurwanya imbaraga
Muri rusange, uko imbaraga zingana cyangwa zigoramye ibintu, imbaraga zingaruka zikunda kubura. Ariko, kongeramo agent nucleating bizagabanya ubunini bwa spherulite ya polymer, kugirango polymer igaragaze ingaruka nziza. Kurugero, kongeramo ibikoresho bya nucleating bibereye muri PP cyangwa PA ibikoresho fatizo birashobora kongera imbaraga zingaruka zibintu 10-30%.
03 Ingaruka kumikorere ya optique
Polimeri gakondo ibonerana nka PC cyangwa PMMA muri rusange ni polimeri ya amorphous, mugihe kristaline cyangwa igice cya kirisiti ya kirisiti isanzwe itagaragara. Kwiyongera kwa nucleating agent birashobora kugabanya ingano yintete za polymer kandi bikagira ibiranga imiterere ya microcrystalline. Irashobora gutuma ibicuruzwa byerekana ibiranga ibintu bisobanutse cyangwa bisobanutse neza, kandi mugihe kimwe birashobora kunoza ubuso bwibicuruzwa.
04 Ingaruka kumikorere yo gutunganya polymer
Muburyo bwo kubumba bwa polymer, kubera ko gushonga kwa polymer bifite umuvuduko ukonje byihuse, kandi urunigi rwa polymer ntirwigeze rusakara rwose, bitera kugabanuka no guhindura ibintu mugihe cyo gukonjesha, kandi polymer ituzuye ituzuye ifite umutekano muke. Biroroshye kandi kugabanuka mubunini mugihe cyibikorwa. ongeramo agent nucleating irashobora kwihutisha igipimo cyo gutegera, kugabanya igihe cyo kubumba, kunoza imikorere no kugabanya urwego rwo kugabanuka nyuma yibicuruzwa.
Ubwoko bwa nucleating agent
01 α kristal nucleating agent
Itezimbere cyane cyane gukorera mu mucyo, kurabagirana hejuru, gukomera, ubushyuhe bwo kugoreka ubushyuhe, nibindi bicuruzwa. Yitwa kandi agent ikora mucyo, iyongerekana rya transmitance, hamwe na rigidizer. Ahanini ushizemo dibenzyl sorbitol (dbs) nibiyikomokaho, umunyu wa fosifate ester umunyu, benzoate yasimbuwe, nibindi, cyane cyane dbs nucleating agent transparent nikintu gikunze gukoreshwa. Alpha kristal nucleating agent irashobora kugabanywamo organic organique, organic na macromolecules ukurikije imiterere yabyo.
02 Ntibisanzwe
Ibikoresho bya nucleaux organique birimo talc, calcium oxyde, karubone yumukara, calcium karubone, mika, pigment organic organique, kaolin hamwe n ibisigazwa bya catalizator. Nibintu byambere bihendutse kandi bifatika bya nucleating agent byatejwe imbere, kandi ubushakashatsi bwakozwe kandi bukoreshwa cyane ni talc, mika, nibindi.
03 Organic
Umunyu wa Carboxylic acide: nka sodium succinate, sodium glutarate, sodium caproate, sodium 4-methylvalerate, acide adipic, aluminium adipate, aluminium tert-butyl benzoate (Al-PTB-BA), Aluminium benzoate, potasiyumu benzoate, lithium benzoate, sodium cinnamate, sodium β-naphthoate, nibindi. Muri byo, icyuma cya alkali cyangwa umunyu wa aluminium ya acide ya benzoic, hamwe nu munyu wa aluminium ya tert-butyl benzoate bigira ingaruka nziza kandi bifite amateka maremare yo gukoresha, ariko gukorera mu mucyo ni bibi.
Umunyu w'icyuma cya fosifori: Fosifike kama irimo imyunyu ngugu ya fosifate hamwe na fosifate y'ibanze yibanze hamwe nibigo byayo. Nka 2,2'-methylene bis (4,6-tert-butylphenol) fosifine ya aluminium umunyu (NA-21). Ubu bwoko bwa nucleating agent burangwa no gukorera mu mucyo, gukomera, kwihuta kwihuta, nibindi, ariko bidatandukanye.
Ibikomoka kuri Sorbitol benzylidene: Ifite ingaruka zikomeye zo kunoza imikorere, mucyo, hejuru yubuso, gukomera nibindi bintu bya termodinamike yibicuruzwa, kandi bifite aho bihurira na PP. Nubwoko buboneye burimo gukorwa ubushakashatsi bwimbitse. Nucleating agent. Hamwe nimikorere myiza nigiciro gito, yahindutse cyane cyane nucleating agent hamwe nubwoko bunini hamwe n’umusaruro munini n’igurisha mu gihugu no hanze yacyo. Hariho ahanini dibenzylidene sorbitol (DBS), bibiri (p-methylbenzylidene) sorbitol (P-M-DBS), bibiri (p-chloro byasimbuwe na benzal) sorbitol (P-Cl-DBS) nibindi.
Umuyoboro mwinshi wa polymer nucleating agent: Kugeza ubu, hariho cyane cyane polyvinyl cyclohexane, polyethylene pentane, Ethylene / acrylate copolymer, nibindi. Ifite imiterere mibi yo kuvanga hamwe na resine ya polyolefine kandi ikwirakwizwa neza.
agent intungamubiri za kirisiti:
Ikigamijwe ni ukubona ibicuruzwa bya polypropilene hamwe nibintu byinshi bya kirisiti. Ibyiza ni ukunoza ingaruka ziterwa nibicuruzwa, ariko ntibigabanya cyangwa ngo byongere ubushyuhe bwumuriro wubushyuhe bwibicuruzwa, kuburyo ibintu bibiri bivuguruzanya byo kurwanya ingaruka no kurwanya ubushyuhe bitabwaho.
Ubwoko bumwe nuburyo buke bwahujwe nimpeta ya quasi-planar.
Ibindi bigizwe na oxyde, hydroxide nu munyu wa acide dicarboxylic acide hamwe nicyuma cyitsinda IIA ryameza yigihe. Irashobora guhindura igipimo cyimiterere itandukanye ya kristu muri polymer kugirango ihindure PP.
