Mphamvu Yaikulu ya Ufa wa Polima Wosungunukanso Pa Kuuma kwa Mtondo

Mu chemistry yamakono yomanga,Ufa wa Polima Wosungunukanso (RDP)hkukhala chimodzi mwa zowonjezera zomwe zimakhudza kwambiri ukadaulo wa matope osakaniza ndi dry-mix. Pamene miyezo yomanga ikukwera padziko lonse lapansi, makontrakitala ndi opanga amafunikira kwambiri matope omwe amapereka mphamvu yolumikizirana, kusinthasintha kwabwino, kukana madzi bwino, komanso kulimba kwambiri.

RDP imagwira ntchito yofunika kwambiri pokwaniritsa zolinga izi. Pa nthawi yolimbitsa matope, imasintha kwambiri kapangidwe ka mkati mwa makina opangidwa ndi simenti, kukonza kumatira, kuchepetsa kusweka, komanso kulimbitsa kukhazikika kwa makina kwa nthawi yayitali.

Nkhaniyi ikufotokoza momwe RDP imakhudzira kuuma kwa matope, momwe amagwirira ntchito, komanso chifukwa chake yakhala yofunika kwambiri mu zomatira za matailosi, putty ya pakhoma, zomatira zokonzanso, mankhwala odziyimira pawokha, ndi makina oteteza kunja.

Kodi ufa wa polima wosungunukanso ndi chiyani?

Ufa wa Polima Wosasinthika ndi ufa woyera wotuluka madzi, womwe umapangidwa ndi ma emulsion a polima opopera. Ukasakanizidwa ndi madzi, umabwereranso ku emulsion yokhazikika ya polima, zomwe zimapangitsa kuti igwirizane ndi makina osungira simenti.

Kapangidwe kake:

• Vinyl acetate ethylene (VAE)
• Kopolymer ya vinilu ya acetate
• Ma polima opangidwa ndi acrylic

Makhalidwe ofunikira:

• Kupanga mafilimu abwino kwambiri
• Kulimbitsa kumatirira mwamphamvu
• Kusinthasintha kwabwino
• Kukana madzi kwambiri
• Kuwongolera kukana kwa ming'alu

Momwe RDP Imagwirira Ntchito mu Mortar Systems

Ngati matope ouma okhala ndi RDP asakanizidwa ndi madzi:

1. Tinthu ta polima timafalikiranso mofanana
2. Kuthira madzi kwa simenti kumayamba
3. Filimu ya polymer imapangidwa pang'onopang'ono ikauma
4. Kapangidwe ka netiweki yolumikizana kamakula

Dongosolo losakanikirana ili lahydration ya simenti + mapangidwe a filimu ya polimandi zomwe zimapangitsa kuti ma mortars osinthidwa agwire bwino ntchito.

Udindo wa RDP mu Kuuma kwa Mkaka

Kulimbitsa matope sikuti ndi kungokhudza madzi a simenti okha—komanso kupanga ma microstructure. RDP imakhudza kwambiri njirayi m'njira zingapo.

1. Mphamvu Yolimbitsa Ubwenzi

Chimodzi mwa zotsatira zofunika kwambiri za RDP ndi kukulitsa kumatirira.

Pa nthawi yolimbitsa:

• Tinthu ta polima timasamukira ku malo olumikizirana
• Filimu yopitilira imapangidwa pakati pa substrate ndi matope

Zotsatira:

• Kulumikizana kwa makina kumawonjezeka
• Kugwirizana kwambiri ndi matailosi, konkriti, matabwa a EPS, ndi ma substrates
• Kuchepetsa chiopsezo cha kusweka kapena kuphulika kwa mabowo

2. Kusinthasintha Kowonjezereka ndi Kutanuka

Ma matope opangidwa ndi simenti amakhala opunduka mwachilengedwe. RDP imapangitsa kuti zinthu zisamavute.

Njira:

• Filimu ya polima imagwira ntchito ngati mlatho wosinthasintha
• Kugawa kwa kupsinjika maganizo kumakhala kofanana
• Kufalikira kwa ming'alu kumachedwa

Zotsatira:

• Kukana bwino kutentha
• Kuchepa kwa ming'alu yocheperako
• Kuchita bwino kwambiri pansi pa kugwedezeka kapena kuyenda

3. Kukonza Kukana Madzi

Pa nthawi yokonza, RDP imapanga maukonde a polymer a hydrophobic.

Ubwino:

• Kuchepa kwa kuyamwa kwa madzi m'mitsempha yamagazi
• Kutsika kwa mpweya woipa
• Kukana bwino kuzizira ndi kusungunuka

Izi ndizofunikira kwambiri pa:

• Makoma akunja
• Mabafa
• Maiwe osambira
• Mafelemu a pakhoma

4. Kulimbitsa Kukana kwa Ming'alu

Ming'alu ndi malo olephera kwambiri m'makina a simenti.

RDP imakulitsa kukana ming'alu mwa:

• Kuwonjezeka kwa kusinthasintha kwamkati
• Kuchepetsa kupsinjika kwa thupi
• Kulimbitsa mgwirizano wa kapangidwe ka zinthu zazing'ono

5. Kugwira Ntchito Bwino Musanayambe Kuimitsa

Musanayike, RDP imawongolera momwe matope amagwirira ntchito:

• Kugwiritsa ntchito bwino
• Kukonza bwino matayala
• Nthawi yotseguka yayitali (ndi mgwirizano wa cellulose ether)
• Kuchepetsa kulekanitsa

Kugwirizana Pakati pa RDP ndi Cellulose Ether

Mu mortars ambiri ogwira ntchito bwino, RDP imagwiritsidwa ntchito pamodzi ndi ma ether a cellulose monga:

• HPMC
• MHEC
• HEC

Zotsatira zophatikizika:

• HPMC → kusunga madzi + kugwira ntchito bwino
• RDP → kumatira + kusinthasintha + kulimba

Pamodzi, amapanga dongosolo lolinganizika lomwe limatsimikizira magwiridwe antchito atsopano komanso olimba.

Zotsatira za RDP pa Chitukuko cha Zing'onozing'ono

Pa nthawi yolimbitsa thupi,RDPamasintha kapangidwe ka mkati:

Popanda RDP:

• Makristalo a simenti amakula molimba mtima
• Ma pores akuluakulu atsala
• Mapangidwe a Brittle

Ndi RDP:

• Polima imadzaza ma micro-pores
• Makristalo a simenti olumikizana ndi filimu ya polima
• Mawonekedwe a matrix okhuthala komanso osinthasintha

Izi zimabweretsa:

• Kuchulukana kwakukulu
• Kutsika kwa porosity
• Mgwirizano wamphamvu wamkati

RDP mu Matailosi Omatira Omata

Ma glue a matailosi ndi amodzi mwa ntchito zazikulu za RDP.

Kusintha kwa magwiridwe antchito:

• Kugwirizana kwa matailosi kolimba
• Kugwira ntchito kosatsetsereka
• Kukhazikika kwa nthawi yayitali yotseguka
• Kukana madzi ndi kutentha

RDP imaonetsetsa kuti matailosi amakhalabe olimba ngakhale pakakhala zovuta zachilengedwe.

RDP mu Wall Putty ndi Skim Coat

Mu makina omalizitsa makoma, RDP imapereka:

• Mapeto osalala
• Khalidwe labwino lokonza mchenga
• Kuchepa kwa ming'alu
• Kumamatira bwino ku ma substrates

RDP mu Ma Compound Odziyimira Payokha

Mu mortars odzipangira okha, RDP imathandizira ku:

• Kukula kwa mphamvu pamwamba
• Kusinthasintha pambuyo pochira
• Kuchepa kwa ming'alu yocheperako
• Kulimba bwino mukanyamula katundu

RDP mu Kukonza Ma Mortars

Pa ntchito zokonzanso kapangidwe ka nyumba:

• Zimathandizira kulumikiza konkriti yakale
• Zimathandiza kusamutsa katundu
• Zimawonjezera kulimba kwa magawo okonzedwa

Ubwino Wachilengedwe ndi Kukhalitsa

Ma mortar osinthidwa ndi RDP amapereka:

• Moyo wautali wautumiki
• Kuchepetsa ndalama zokonzera
• Kukana bwino malo ovuta
• Kupititsa patsogolo kukhazikika kwa nyumba

Ubwino Wachuma

Ngakhale kuti RDP imawonjezera mtengo wa zinthu, imapereka:

• Kuchepa kwa kulephera
• Kuchepetsa kukonzanso
• Moyo wautali wa malonda
• Kugwiritsa ntchito bwino kwambiri pomanga

Mtengo wonse wa moyo wonse wachepetsedwa kwambiri.

Zinthu Zofunika Kwambiri Zokhudza Kugwira Ntchito kwa RDP

1. Mtundu wa polima

• VAE
• Akiliriki
• Styrene-acrylic

2. Mlingo wa Mlingo

Mlingo wochuluka umathandiza kusinthasintha koma ungachepetse mphamvu yopondereza.

3. Ubwino wa Simenti

Simenti yapamwamba kwambiri imathandizira kuyanjana kwa RDP.

4. Kuphatikizana Kowonjezera

Imagwira ntchito bwino kwambiri ndi ma ether a cellulose ndi ma mineral fillers.

Zochitika Zamtsogolo mu Ukadaulo wa RDP

Makampani omanga akupita patsogolo ku:

• Makina a polima otsika a VOC
• Ma matope osinthasintha ogwira ntchito bwino kwambiri
• Mafomula a RDP ochezeka ndi chilengedwe
• Ukadaulo wa polima wosakanizidwa
• Machitidwe osinthira opangidwa ndi nano-enhanced

RDP ipitilizabe kukhala chinthu chofunikira kwambiri pakupanga zinthu zobiriwira.

Ufa wa polima wosungunukansoZimakhudza kwambiri kuuma kwa matope mwa kusintha machitidwe achikhalidwe a simenti yofooka kukhala zipangizo zomangira zosinthasintha, zolimba, komanso zogwira ntchito bwino. Kudzera mu kupanga filimu, kumamatira bwino, kukana madzi, komanso kusintha kapangidwe kake kakang'ono, RDP imakweza kwambiri magwiridwe antchito a matope amakono ouma.

Kugwirizana kwake ndi ma cellulose ether ndi zina zowonjezera kwapangitsa kuti ikhale chinthu chofunikira kwambiri mu zomatira za matailosi, putty wall, mortars zokonzanso, ndi mankhwala odziyimira pawokha. Pamene zofuna zomangira zikupitilira kusintha, RDP idzakhalabe ukadaulo wofunikira pa zipangizo zomangira zapamwamba.