Lub luag haujlwm ntawm redispersible yas hmoov nyob rau hauv cug
Tam sim no, raws li kev siv cov hmoov nplej qhuav xim ntub dej yog maj mam muab cov tshuaj sib xyaw ua ke ntawm cov khoom sib xyaw tshwj xeeb ntawm cov hmoov sib xyaw kom yooj yim. Yog li ntau tus Thawj Coj tau tshwm sim. Cov hmoov yas latx, cov hmoov ntau cov hmoov nplej alymer looj hmoov, cob cov hmoov yas looj dej looj dej looj hmoov thiab lwm yam.
Lub tshuab tsom iav microscopic thiab macroscopic ua tau ntawm redispersible latterx hmoov hauv cug yog kev sib xyaw ua ke yog tshuaj ntsuam. Qhov kev txiav txim mechanism ntawm redispersible latUx hmoov redispersible looj roj hmab thiab anti-cog tus neeg sawv cev los ua cov ntawv polymer tom qab tshuaj pleev kom qhuav. Dawb-ntws cov hmoov rescispersible hauv dej. Redispersible looj hmoov tau muab faib rau hauv lub puab hwj huam ua kom qhuav. Tom qab lub cug ua paug nrog dej, cov hmoov polymer yog redispersed rau hauv freshly sib xyaw slurry thiab emulsified dua; Vim yog cov dej cawv ntawm cov cement, qhov chaw nqus dej thiab nqus ntawm lub hauv paus txheej, cov pores sab hauv cug cug yog pub dawb. Kev siv cov dej txuas ntxiv ntawm cov dej thiab ib puag ncig muaj zog uas tau muab los ntawm cov kua txiv hmab txiv ntoo kom qhuav los ua cov yeeb yaj kiab-insoluble txuas ntxiv ua yeeb yaj kiab hauv lub cug. Qhov kev ua yeeb yaj kiab txuas ntxiv yog tsim los ntawm kev fusion ntawm ib qho yuam kev ntawm ib qho hauv cov emulsion rau hauv homogeneous lub cev. Nws yog lub hav zoov ntawm cov kua txiv hmab txiv ntoo hloov kho tshiab uas ua rau lub hauv paus yus tus kheej, nws tuaj yeem tsim kho tus kheej ntawm cov kab cug, xws li cov nplaum ntawm cov pob tawb tshwj xeeb xws li High-densas cov vuas luaj ceramic thiab polystyrene; Qhov xwm txheej no tuaj yeem ua rau nws tag nrho, hauv lwm cov lus, lub zog ntawm redispersible looj tes thiab cov pob zeb ua haujlwm tau zoo dua; Muaj siab lub xub ntiag ntawm kev hloov tau thiab yooj yim elastic polymer tseem zoo dua ntawm cov tshuaj khib nyiab, thaum lub sijhawm txhim kho nws tus kheej qis dua, qhia tau tias nws yooj yim tau txhim kho. Latex zaj duab xis pom nyob rau hauv culture hauv polymer hloov tshiab cug kab cug ntawm cov hnub nyoog sib txawv. Zaj duab xis tsim los ntawm LASTX tau faib rau hauv cov haujlwm sib piv, suav nrog lub hauv paus huab tais, nyob ib ncig ntawm kev sib sau ua ke, thiab cov kab sib sau ua ke-cug interface. Qee cov tshuaj yeeb latex faib tawm hauv cov tshuaj khib nyiab uas tsis muaj peev xwm ua kom tau txais cov tshuaj tsw qab ntawm cov khoom sib xyaw ua ke Txhim kho lub foob ntim ntawm cug. Kev txhim kho ntawm cov cohesive zog ntawm lub cug tshuaj tua hluav taws xob ntawm lub cugre hloov tau thiab elastic polymer sib txuas thiab kev coj ua kom sib xyaw ua ke rau cov pob txha tsis sib xws. Thaum quab yuam yog siv, microcack tsim tau qeeb kom txog thaum muaj kev ntxhov siab ntau dua vim yog kev txhim kho kom zoo thiab elasticity. Lub interwov polymer domains kuj tseem ceeb rau coalescence ntawm microcacks rau hauv kev tawg. Yog li ntawd, cov refispersible looj hmoov nce ntxiv qhov tsis txaus siab thiab tsis ua tiav hom ntawm cov khoom siv. Kev hloov kho ntawm cov polymer rau txoj kev ywj pheej cem ua rau ob qho kev hloov kho capifulingary yuav siv tau ntau lub sijhawm tshwj xeeb. Ntxiv rau, vim qhov zoo ntawm cug cug ua haujlwm zoo, chaw tsim khoom, recispersible latterx hmoov muab cov khoom siv tshwj xeeb rau cov khoom lag luam tshwj xeeb.
Raws li cov tshuab ntawm kev ua ntawm refispersible polymer hmoov hauv lwm cov ntaub ntawv los xyuas cov kev ua tau zoo ntawm lwm cov khoom siv los xyuas cov khoom ua haujlwm ntawm kev ua lag luam, tseem hu ua cov hmoov looj. 1. Cov ntaub ntawv raw thiab kuaj cov khoom siv 1.1 raw khoom Mentshis (Spndfield Cellcometer, Sprindle Conscometer, Sprinderg Hmoov, TG tus nqi yog -7 ° C, ntawm no yog hu ua cov hmoov av cov hmoov av (50 ± muaj cov cua tshuab hluav taws xob: 0.2m / s. Moulded nthuav dav polystyrene Board, Qiv Qiv yog 18kg / m3, txiav rau hauv 400 × 5 hli. 2. Cov Lus Kuaj Xyuas: 2.1 tensile lub zog nyob rau hauv kev kho lub sijhawm sib txawv: Cov hnoos qeev yog tau ua raws li kev ntsuas cug tensile nyiaj zog hauv JG149-2003. Cov txheej txheem kho ntawm no yog: Tom qab cov qauv yog tsim rau ib hnub nyob rau hauv tus qauv ntawm chav kuaj, thiab tom qab ntawd muab tso rau hauv 50-degree cub. Thawj lub lim tiam ntawm kev sim yog: Muab nws tso rau hauv ib hnub thib rau, coj nws mus kuaj lub taub hau, nyob rau hnub 7, lub sijhawm rub lub zog. Qhov kev xeem nyob rau hauv lub lim tiam thib ob yog: muab nws tso rau hauv 50-degree qhov cub kom txog rau thaum muaj hnub nyoog 13 xyoos, muab ib lub sijhawm rub tawm ntawm lub zog 14. Lub lim tiam thib peb, lub lim tiam plaub. Cov. Cov. Thiab yog li ntawd.
Los ntawm cov txiaj ntsig, peb tuaj yeem pom tau tias lub zog ntawm redispersible looj cov kev sib xyaw ua ke, yog li ua kom muaj zog ntawm cov khoom siv hluav taws xob rau lub hauv paus tshwj xeeb ntawm EPS Board. Ntawm qhov tsis sib xws, cov khoom lag luam muaj txiaj ntsig zoo 97 muaj lub zog qis dua li nws khaws cia rau hauv ib puag ncig muaj zog ntev. Lub zog ua kom muaj kev puas tsuaj ntawm cov dispersible looj hmoov rau EPS Board tseem zoo li qub, tab sis tus neeg ua kom muaj zog ntawm kev lag luam tau muaj ... rau Eps Board tau txais kev phem thiab zuj zus.
Feem ntau hais lus, kev lag luam muaj hmoov zoo thiab rov ua cov hmoov zoo li ntawm cov khoom sib txawv, ua ib qho khoom siv sib txawv los txhim kho cov khoom siv lub cev ntawm lub cug. Lub tshuab ntawm kev ua ntawm kev ua tau zoo yog tsis sib xws.
Lub sij hawm ncua: Mar-31-2023