Ibikoresho bya EPS byerekana ko ari ibikoresho byoroheje byifashishwa mu kuvanga imvange zidasanzwe, guhuza ibinyabuzima, ibivanze, inyongeramusaruro hamwe n’urumuri mu rugero runaka. Muri minisiteri ya EPS ya insulasiyo yize kandi ikoreshwa, ifu ya redxersible latex ifasha cyane kumikorere ya minisiteri, ibara igice kinini cyibiciro, kandi yamye yibandwaho. Imikorere yo guhuza ibice bya EPS ibice byimyororokere yububiko bwa sisitemu yo hanze yinkuta ahanini biva muri polymer binder, igizwe ahanini na vinyl acetate / Ethylene copolymers. Gusasira kumisha ubu bwoko bwa polymer emulsion irashobora kubyara ifu ya redxersible. Ifu ya redispersible latex yahindutse inzira yiterambere mubwubatsi bitewe nuburyo bwateguwe neza, ubwikorezi bworoshye nububiko bworoshye. Imikorere ya EPS ibice byokwirinda biterwa ahanini nubwoko nubunini bwa polymer yakoreshejwe. Ifu ya Ethylene-vinyl acetate (EVA) ifite vitamine nyinshi hamwe na Tg (ubushyuhe bwikirahure bwikirahure) ifite imikorere myiza mumbaraga zingaruka, guhuza imbaraga no kurwanya amazi.
Ifu ya polymer isubirwamo ni umweru, ifite amazi meza, ifite ubunini buke nyuma yo gusubiranamo, kandi ifite itandukaniro ryiza. Nyuma yo kuvanga namazi, uduce twa porojeri ya latx irashobora gusubira muburyo bwambere bwa emulsiya kandi igakomeza ibiranga nimirimo nkibikoresho kama. Uruhare rwimyunyu ngugu ya polymer mumashanyarazi ya minisiteri igenzurwa nuburyo bubiri: hydrata ya sima hamwe na polymer ifu ya firime. Sisitemu yo gukora sisitemu yo gutunganya sima hamwe na polymer yifu ya firime irangizwa nintambwe enye zikurikira:
.
. ivangwa rya sima.
. Mugihe sima ikomeza kugenda neza, amazi yo muri capillaries aragabanuka hanyuma uduce twa polymer tugaterana hejuru ya sima gel / idafite amazi ya sima ivanze hamwe nuruvange rwumucyo, bigakora urwego rukomeza kandi rwuzuye. Kuri iyi ngingo, imyenge minini yuzuyemo ibice bya polymer bifatanye cyangwa byifata.
. , hamwe na polymer icyiciro kivanze muri sima hydration slurry.
Amazi ya sima hamwe na porojeri ya firime ya firime ikora sisitemu nshya, kandi ingaruka zazo zitezimbere kandi zitezimbere imikorere yimyunyu ngugu.
Ingaruka yifu ya polymer yongewe kumashanyarazi yumuriro
Imiterere ihindagurika cyane kandi yoroheje cyane ya polymer mesh membrane ikozwe nifu ya latex itezimbere cyane imikorere ya minisiteri yubushyuhe bwumuriro, cyane cyane imbaraga za tensile zateye imbere cyane. Iyo imbaraga zo hanze zashyizwe mu bikorwa, ibibaho bya micro-crack bizacika cyangwa bigabanuke bitewe no kunoza ubumwe rusange bwa minisiteri hamwe na elastique ya polymer.
Imbaraga zingana za minisiteri yubushyuhe bwiyongera hamwe no kwiyongera kwifu ya polymer; imbaraga za flexural n'imbaraga zo kwikuramo bigabanuka kurwego runaka hamwe no kwiyongera kwifu ya latex, ariko irashobora kuzuza ibisabwa kugirango imitako yo hanze ikorwe. Ihindagurika rya compression ni ntoya, ibyo bikaba byerekana ko minisiteri yubushyuhe bwumuriro ifite imikorere ihindagurika kandi ikora neza.
Impamvu nyamukuru zituma ifu ya polymer itezimbere imbaraga zingutu ni: mugihe coagulation no gukomera kwa minisiteri, polymer izaza hanyuma ikore firime mukarere kinzibacyuho hagati ya EPS nuduce twa sima, bigatuma intera iri hagati ya denser zombi kandi zikomeye; igice cya polymer gikwirakwizwa muri paste ya sima hanyuma igashyirwa muri firime hejuru ya sima hydrat gel kugirango ikore umuyoboro wa polymer. Uru rusobe ruto rwa modulus polymer rutezimbere ubukana bwa sima ikomeye; amatsinda amwe ya polar muri molekile ya polymer arashobora kandi kwitwara muburyo bwa chimique hamwe nibicuruzwa bitanga amazi ya sima kugirango bigire ingaruka zidasanzwe, bityo bitezimbere imiterere yumubiri wibikorwa bya hydrata ya sima no kugabanya imihangayiko yimbere, bityo bigabanye kubyara microcrake muri paste ya sima.
Ingaruka za dosiye isubirwamo ya polymer ifu kumikorere ya EPS yumuriro wa minisiteri
Hamwe no kwiyongera kwa dosiye yifu ya latex, guhuriza hamwe no gufata amazi biratera imbere cyane, kandi imikorere ikora neza. Iyo dosiye igeze kuri 2,5%, irashobora guhaza byimazeyo ibikenewe byubwubatsi. Niba ibipimo ari byinshi, ubwiza bwa EPS yumuriro wa EPS yubushyuhe buri hejuru cyane kandi amazi ari make, ibyo bikaba bitajyanye nubwubatsi, nigiciro cya minisiteri kiriyongera.
Impamvu ituma ifu ya polymer ihindura imikorere yimikorere ya minisiteri nuko ifu ya polymer ari polymer ndende ya polymer hamwe nitsinda rya polar. Iyo ifu ya polymer ivanze nuduce twa EPS, ibice bitari polarike murwego runini rwifu ya polymer bizahuza nibice bya EPS. Adorption yumubiri ibaho hejuru ya polar ya EPS. Amatsinda ya polar muri polymer yerekejwe hanze hejuru yubuso bwa EPS, bigatuma ibice bya EPS bihinduka biva kuri hydrophobique bigahinduka hydrophilique. Bitewe ningaruka zo guhindura ifu ya latex hejuru yubutaka bwa EPS, ikibazo cyuko EPS ihura namazi byoroshye. Ikibazo cyo kureremba kandi binini bya minisiteri. Iyo sima yongeyeho kandi ikavangwa muriki gihe, amatsinda ya polar yamamajwe hejuru yubutaka bwa EPS akorana na sima kandi bigahuzwa cyane, bityo bikazamura cyane imikorere yimikorere ya minisiteri ya EPS. Ibi bigaragarira mubyukuri ko ibice bya EPS bihindurwamo byoroshye na sima, kandi imbaraga zihuza zombi zateye imbere cyane.
Isubirwamo rya polymer ifu nigice cyingenzi cyingirakamaro ya EPS ikora cyane. Uburyo bwibikorwa byabwo ahanini ni uko ibice bya polymer muri sisitemu byegeranya muri firime ikomeza, igahuza ibicuruzwa biva muri sima hamwe kugirango bigire imiterere yuzuye y'urusobekerane kandi bihuze neza nuduce twa EPS. Sisitemu igizwe na polymer isubirwamo ifu nizindi binders bifite ingaruka nziza yoroshye ya elastique, itezimbere cyane imbaraga zihuza imbaraga hamwe nubwubatsi bwimyubakire ya EPS.
Igihe cyo kohereza: Ukuboza-30-2024