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Zotsatira za kuwonjezera ufa wa latex ku simenti / gypsum-based ufa wouma wokonzeka wosakaniza

Redispersible latex ufa ali wabwino redispersibility, redisperses mu emulsion pamene anakumana ndi madzi, ndi mankhwala katundu pafupifupi ofanana ndi koyamba emulsion. Kuwonjezera dispersible emulsion latex ufa kwa simenti kapena gypsum ofotokoza youma ufa wokonzeka wothira matope akhoza kusintha zosiyanasiyana katundu matope, monga: kupititsa patsogolo mgwirizano ndi kugwirizana kwa zinthu; kuchepetsa kuyamwa kwa madzi ndi zotanuka modulus zinthu; kukulitsa mphamvu ya Flexural yazinthu, kukana kwamphamvu, kukana kuvala ndi kulimba; kupititsa patsogolo ntchito yomanga ya zipangizo, etc.

Kuonjezera ufa wa latex ku matope a simenti kumapanga filimu yosinthika kwambiri komanso yotanuka ya polima, yomwe idzawongolere bwino ntchito ya matope, makamaka mphamvu yolimba ya matope idzakhala bwino kwambiri. Pamene mphamvu yakunja ikugwiritsidwa ntchito, chifukwa cha kusinthika kwa mgwirizano wonse wa matope ndi kusungunuka kofewa kwa polima, kuchitika kwa ming'alu yaying'ono kumachepetsedwa kapena kuchepetsedwa. Kupyolera mu chikoka cha latex ufa wokhutira pa mphamvu ya matope otsekemera otenthetsera, amapezeka kuti mphamvu zomangira zomangira zowonongeka zimawonjezeka ndi kuwonjezeka kwa ufa wa latex; mphamvu ya flexural ndi mphamvu yopondereza imakhala ndi digiri inayake ndi kuwonjezeka kwa ufa wa latex. Mlingo wa kuchepa, komabe kukwaniritsa zofunika za khoma kunja kumaliza.

Mtondo wa simenti wosakanikirana ndi ufa wa latex, mphamvu zake zomangira 28d zimawonjezeka ndi kuwonjezeka kwa ufa wa latex. Ndi kuchuluka kwa ufa wa latex, kuthekera komangiriza matope a simenti ndi konkriti yakale ya simenti kumakhala bwino, zomwe zimatsimikizira ubwino wake wapadera wokonza miyala ya simenti ya simenti ndi zina. Kuphatikiza apo, chiŵerengero chopinda chamatope chimawonjezeka ndi kuwonjezeka kwa ufa wa latex, ndipo kusinthasintha kwa matope a pamwamba kumapita bwino. Panthawi imodzimodziyo, ndi kuwonjezeka kwa latex ufa wokhutira, zotanuka modulus matope amachepetsa poyamba ndiyeno amawonjezeka. Pazonse, pakuwonjezeka kwa chiŵerengero cha phulusa, zotanuka modulus ndi deformation modulus ya matope ndizotsika kuposa zamatope wamba.

Kafukufukuyu adapeza kuti pakuwonjezeka kwa ufa wa latex, mgwirizano ndi kusungirako madzi kwa matope kunali bwino kwambiri, ndipo ntchito yogwira ntchito inakonzedwa bwino. Pamene kuchuluka kwa ufa wa latex kufika 2.5%, ntchito yogwira ntchito yamatope imatha kukwaniritsa zofunikira zomanga. Kuchuluka kwa ufa wa latex sikuyenera kukhala wochuluka kwambiri, zomwe sizimangopanga matope a EPS otsekemera kwambiri komanso amakhala ndi madzi otsika, omwe sangagwirizane ndi zomangamanga, komanso amawonjezera mtengo wamatope.


Nthawi yotumiza: Mar-09-2023
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