Uruhare rw'ifu ya latex ishobora gusubirwamo mu gishishwa
Muri iki gihe, kubera ko ibikoresho bitandukanye byihariye by’ifu yumye bigenda byemerwa buhoro buhoro kandi bigakoreshwa cyane, abantu bo mu nganda bita ku ifu ya latex ishobora kongera gushonga nk'imwe mu nyongeramusaruro z'ingenzi za mortier yihariye yumye, bityo ibintu bitandukanye byagiye bigaragara buhoro buhoro: ifu ya latex, ifu ya latex ya multi-polymer, ifu ya latex ya resin, ifu ya latex ya resin ishingiye ku mazi n'ibindi.
Imiterere ya mikorosikopi n'imikorere ya macroscopike yaifu ya latex ishobora kongera gushongaMu gikoresho cyo mu bwoko bwa mortier bihujwe, kandi hari ibisubizo bimwe na bimwe by’ubushakashatsi bisesengurwa. Uburyo ifu ya latex ishobora kuvugururwa Ifu ya latex ishobora kuvugururwa ni ugutegura emulsion ya polymer mu ruvange rushobora gukoreshwa mu kumisha spray wongeyeho inyongera zitandukanye, hanyuma ukongeramo colloid irinda gufunga kugira ngo ikore polymer nyuma yo kumisha spray. Ifu itemba ishobora kuvugururwa mu mazi. Ifu ya latex ishobora kuvugururwa ikwirakwizwa mu gikoresho cyumye cyavanzwe neza. Nyuma y’uko igikoresho cyo mu bwoko bwa mortier kivanze n’amazi, ifu ya polymer isubira gukururwa mu gikoresho gishya kivanze hanyuma ikongera gukururwa; bitewe n’amazi menshi ya sima, ubushyuhe bw’ubuso n’uburyo urwego rw’ibanze rutangira, imyenge iri mu gikoresho cyo mu bwoko bwa mortier iba yoroheje. Gukomeza gukoresha amazi n’ibidukikije bikomeye bya alkaline bitangwa na sima bituma uduce twa latex twuma kugira ngo dukore firime idashonga mu mazi. Iyi firime ikomeza ikorwa no guhuzwa kw’uduce duto dutatanye muri emulsion mu mubiri umwe. Kuba hariho izi firime za latex zikwirakwizwa muri morti yahinduwe na polymer bituma morti yahinduwe na polymer ibona imiterere idashobora kugira muri morti ya sima ikomeye: bitewe n'uburyo firime ya latex yikora ubwayo, ishobora gushyirwa ku rufatiro cyangwa muri morti. Ku ruhande rw'urukuta rwahinduwe na polymer n'urukuta, iyi ngaruka ishobora kunoza imikorere y'urukuta n'ibice bitandukanye, nko gufatana kw'ibice byihariye nk'amatafari ya ceramic afite ubucucike bwinshi n'imbaho za polistirene; Iyi ngaruka imbere muri morti yahinduwe ishobora kuyigumana yose, mu yandi magambo, imbaraga z'urukuta ziyongera, kandi uko ingano y'ifu ya latex ishobora kongera gushonga yiyongera, imbaraga z'urukuta hagati ya morti n'urukuta rwa beto zirushaho kwiyongera cyane; Hejuru Kuba hari uturere twa polimeri tworoshye kandi dukomeye cyane byazamuye cyane imikorere y'urukuta n'ubucucike bw'urukuta, mu gihe modulus ya elastic ya morti ubwayo yagabanutse cyane, bigaragaza ko ubworoherane bwayo bwarushijeho kwiyongera. Urukuta rwa latex rwagaragaye imbere muri morti yahinduwe na polimeri mu myaka itandukanye. Filimi ikorwa na latex ikwirakwizwa mu myanya itandukanye muri mortika, harimo aho ihuza inkingi n'ibumba, hagati y'imyenge, hafi y'urukuta rw'imyenge, hagati y'ibikomoka ku mazi bya sima, hafi y'uduce twa sima, hafi y'ibumba, n'aho ihuza. Filimi zimwe na zimwe za latex zikwirakwizwa muri mortika zahinduwe n'ifu ya polymer ishobora guhindurwa zituma bishoboka kubona imiterere iyo mortika ikomeye ya sima idashobora kugira: firime ya latex ishobora guhuza imyenge yo gushonga ku gice cy'ibumba no gutuma imyenge yo gushonga ikira. Kongera ubushobozi bwo gufunga mortika. Kunoza imbaraga z'uruvange: Kuba hari uturere twa polymer tworoshye kandi tworoshye cyane binoza ubworoherane n'ubudahangarwa bw'uruvange, bigatanga uburyo bwo guhuza n'imikorere ihamye ku gitereko gikomeye. Iyo imbaraga zikoreshejwe, ikorwa rya microcrack riratinda kugeza igihe habayeho imbaraga nyinshi bitewe no kwiyongera no guhindagurika. Uduce twa polymer dufatanye kandi tubuza guhuza microcracks mu myenge yinjira. Kubwibyo, ifu ya latex ishobora gushonga yongera stress yo gutsindwa n'ubudahangarwa bw'ibikoresho. Guhindura polimeri ikayishyira mu gishishwa cya sima bituma byombi bigira ingaruka zuzuzanya, bityo igishishwa cyahinduwe na polimeri gishobora gukoreshwa mu bihe byinshi byihariye. Byongeye kandi, bitewe n'akamaro k'igishishwa cyumye mu kugenzura ubuziranenge, imirimo yo kubaka, kubika no kurengera ibidukikije, ifu ya latex ishobora gukurwamo itanga uburyo bwiza bwo gukora ibikoresho byihariye byumye.
Dushingiye ku buryo ifu ya polymer ishobora kongera gushonga mu gikoresho, twakoze ibizamini byo kugereranya kugira ngo tumenye neza imikorere y'ikindi gikoresho kiri ku isoko ubu, kizwi kandi nka ifu ya latex, mu gikoresho. 1. Ibikoresho fatizo n'ibisubizo by'ibizamini 1.1 Sima y'ibikoresho fatizo: Ikirango cya Conch 42.5 Umucanga usanzwe wa Portland Sima: Umucanga wo mu ruzi, Silicon 86%, Ubunona 50-100 Mesh Cellulose Ether: Ubunona bwo mu rugo 30000-35000mpas (Brookfield Viscometer, Spindle 6, Umuvuduko 20) Ifu ya kalisiyumu ikomeye: ifu ya kalisiyumu karubone ikomeye, ubunona ni 325 mesh Ifu ya latex: Ifu ya latex ikoreshwa muri VAE, agaciro ka Tg ni -7°C, aha hitwa: ifu ya latex ikoreshwa muri fibre y'ibiti: ZZC500 y'ikigo cya JS Ifu ya latex ikoreshwa mu bucuruzi: ifu ya latex ikoreshwa mu bucuruzi, yitwa hano: ifu ya latex ikoreshwa mu bucuruzi 97. Ifishi y'ibizamini bya mekanike ni: Imiterere y'ibizamini bisanzwe bya laboratwari: ubushyuhe (23±2)°C, ubushuhe (50±5)%, ikizamini Umuvuduko w'umuyaga uzenguruka mu gace uri munsi ya 0.2m/s. Ikibaho cya polystyrene cyakozwe mu buryo bwa "developed polystyrene", ubucucike bungana na 18kg/m3, cyaciwemo 400×400×5mm. 2． Ibisubizo by'ikizamini: 2.1 Ingufu zo gukurura mu gihe gitandukanye cyo gukurura: Ibipimo byakozwe hakurikijwe uburyo bwo gupima imbaraga zo gukurura muri JG149-2003. Sisitemu yo gukurura hano ni: nyuma yuko icyitegererezo kikozwe, gikira umunsi umwe hakurikijwe imiterere isanzwe ya laboratwari, hanyuma kigashyirwa mu itanura rya dogere 50. Icyumweru cya mbere cyo gupima ni: kugishyira mu itanura rya dogere 50 kugeza ku munsi wa gatandatu, kugikuramo, gushyira umutwe w'ikizamini cyo gukurura, Ku munsi wa 7, hageragejwe itsinda ry'imbaraga zo gukurura. Ikizamini mu cyumweru cya kabiri ni: kugishyira mu itanura rya dogere 50 kugeza ku munsi wa 13, kugikuramo, gushyira umutwe w'ikizamini cyo gukurura, hanyuma kugipima itsinda ry'imbaraga zo gukurura ku munsi wa 14. Icyumweru cya gatatu, icyumweru cya kane. . . n'ibindi.
Dukurikije ibyavuye mu bushakashatsi, dushobora kubona ko imbaraga zaifu ya latex ishobora kongera gushongaMuri mortiyo yiyongera kandi igakomeza uko igihe kiri mu bushyuhe bwinshi kiyongera, kimwe na firime ya latex ifu ya latex ishobora kongera gukurwaho izakorwa muri mortiyo. Inyigisho irahamye, uko igihe cyo kubika kigenda kirekire, firime ya latex y'ifu ya latex izagera ku bucucike runaka, bityo ikagenzura ko mortiyo ifatana n'ubuso bwihariye bw'ishingiro ry'ikibaho cya EPS. Ibinyuranye n'ibyo, ifu ya latex 97 igurishwa ku isoko ifite imbaraga nke kuko ibikwa ahantu hashyushye cyane igihe kirekire. Imbaraga zo gusenya z'ifu ya latex ijugunywa ku kibaho cya EPS ziguma ari zimwe, ariko imbaraga zo gusenya z'ifu ya latex 97 igurishwa ku kibaho cya EPS zigenda zirushaho kwiyongera.
Muri rusange, ifu ya latex igurishwa ku isoko n'ifu ya latex ishobora guhindurwa ifite uburyo butandukanye bwo gukora, naho ifu ya latex ishobora guhindurwa, ikora agace gatandukanye k'ibumba, ikora nk'igikoresho cya kabiri cyo kuvugurura imiterere y'ibumba. Uburyo ikoreshwa ry'imikorere ntirihuye.
Igihe cyo kohereza: 25 Mata 2024