Ma cellulose a Hydroxyethyl (HEC) pomanga: Buku Lophatikiza

1. Mau oyamba a Hydroxyethyl Cellulose (HEC)

Hydroxyethyl cellulose(HEC) ndi polima yopanda ionic, yosungunuka m'madzi yochokera ku cellulose, polysaccharide yachilengedwe yomwe imapezeka m'makoma a cellulose. Kupyolera mu kusintha kwa mankhwala, magulu a hydroxyl mu cellulose amasinthidwa ndi magulu a hydroxyethyl, kupititsa patsogolo kusungunuka kwake ndi kukhazikika muzitsulo zamadzimadzi. Kusintha kumeneku kumapangitsa HEC kukhala chowonjezera chosunthika muzomangamanga, chopereka zinthu zapadera monga kusunga madzi, kukhuthala, komanso kugwira ntchito bwino.

1.1 Kapangidwe ka Mankhwala ndi Kupanga

HECamapangidwa pochiza cellulose ndi ethylene oxide pansi pamikhalidwe yamchere. Digiri ya m'malo (DS), yomwe nthawi zambiri imakhala pakati pa 1.5 ndi 2.5, imatsimikizira kuchuluka kwa magulu a hydroxyethyl pagawo la shuga, zomwe zimakhudza kusungunuka ndi kukhuthala. Kupanga kumaphatikizapo alkalization, etherification, neutralization, ndi kuyanika, zomwe zimapangitsa kuti pakhale ufa woyera kapena woyera.

2. Katundu wa HEC Wogwirizana ndi Zomangamanga

2.1 Kusunga Madzi

HEC imapanga yankho la colloidal m'madzi, ndikupanga filimu yoteteza kuzungulira tinthu tating'onoting'ono. Izi zimachepetsa kutuluka kwa madzi, zomwe ndizofunikira kuti simenti ikhale ndi mphamvu komanso kupewa kuyanika msanga mumatope ndi pulasitala.

2.2 Kukula ndi Viscosity Control

HEC imawonjezera kukhuthala kwa zosakaniza, kupereka kukana kwa sag mu ntchito zoyima ngati zomatira matailosi. Kachitidwe kake ka pseudoplastic kumapangitsa kuti ntchito yake ikhale yosavuta mukameta ubweya wa ubweya (mwachitsanzo, troweling).

2.3 Kugwirizana ndi Kukhazikika

Monga polima yopanda ionic, HEC imakhalabe yokhazikika m'malo a pH (mwachitsanzo, makina a simenti) ndipo imalekerera ma electrolyte, mosiyana ndi ma ionic thickeners monga Carboxymethyl Cellulose (CMC).

2.4 Kukhazikika kwa Matenthedwe

HEC imasunga magwiridwe antchito pamatenthedwe ambiri, ndikupangitsa kuti ikhale yoyenera ntchito zakunja zomwe zimawonekera kumadera osiyanasiyana.

3. Ntchito za HEC mu Zomangamanga

3.1 Zomatira za matailosi ndi ma Grouts

HEC (0.2-0.5% ndi kulemera kwake) imawonjezera nthawi yotseguka, kulola kusintha kwa matayala popanda kusokoneza kumamatira. Imawonjezera mphamvu ya mgwirizano pochepetsa kuyamwa kwamadzi kukhala ma porous substrates.

3.2 Mitondo Yopangira Simenti ndi Ma Renders

Popereka ndi kukonza matope, HEC (0.1-0.3%) imapangitsa kuti ntchito ikhale yogwira ntchito, imachepetsa kusweka, ndikuonetsetsa kuti machiritso amodzimodzi. Kusungidwa kwa madzi ndikofunikira pakugwiritsa ntchito pabedi laling'ono.

3.3 Zogulitsa za Gypsum

HEC (0.3-0.8%) mu gypsum plasters ndi ophatikizana ophatikizana amawongolera kukhazikitsa nthawi ndi kuchepetsa ming'alu ya shrinkage. Imawonjezera kufalikira komanso kumaliza kwapamwamba.

3.4 Paints ndi Zopaka

Mu utoto wakunja, HEC imagwira ntchito ngati thickener ndi rheology modifier, kuteteza kudontha ndikuwonetsetsa ngakhale kuphimba. Zimakhazikitsanso kufalikira kwa pigment.

3.5 Zodziyimira pawokha

HEC imapereka chiwongolero cha mamasukidwe akayendedwe, kupangitsa kuti pansi pawokha aziyenda bwino ndikuletsa kusungunuka kwa tinthu.

3.6 Kutsekera Kunja ndi Finish Systems (EIFS)

HEC imakulitsa kumamatira ndi kulimba kwa malaya opangidwa ndi polima osinthika mu EIFS, kukana nyengo ndi kupsinjika kwamakina.

4. Ubwino waHEC mu ConstructionZipangizo

• Kugwira ntchito:Imathandizira kusakanikirana kosavuta komanso kugwiritsa ntchito.
• Kumamatira:Kumawonjezera mphamvu ya mgwirizano mu zomatira ndi zokutira.
• Kukhalitsa:Amachepetsa kuchepa ndi kusweka.
• Sag Resistance:Zofunikira pamachitidwe oyimirira.
• Mtengo Mwachangu:Mlingo wochepa (0.1-1%) umapereka kusintha kwakukulu kwa magwiridwe antchito.

5. Kuyerekeza ndi Ma cellulose Ether Ena

• Methyl cellulose (MC):Zosakhazikika m'malo okhala ndi pH; gels pa kutentha okwera.
• Carboxymethyl cellulose (CMC):Chikhalidwe cha Ionic chimachepetsa kugwirizana ndi simenti. Kapangidwe ka HEC kopanda ionic kumapereka magwiridwe antchito ambiri.

6. Malingaliro aukadaulo

6.1 Mlingo ndi Kusakaniza

Mlingo woyenera kwambiri umasiyanasiyana malinga ndi ntchito (mwachitsanzo, 0.2% ya zomatira matailosi vs. 0.5% ya gypsum). Kusakaniza koyambirira kwa HEC ndi zowuma zowuma kumalepheretsa kugwa. Kusakaniza kometa ubweya wambiri kumatsimikizira kubalalitsidwa kofanana.

6.2 Zinthu Zachilengedwe

• Kutentha:Madzi ozizira amachepetsa kusungunuka; madzi ofunda (≤40 ° C) amafulumizitsa.
• pH:Wokhazikika mu pH 2-12, yabwino pazomangamanga zamchere.

6.3 Kusungirako

Sungani pamalo ozizira, owuma kuti musamayamwidwe ndi chinyontho.

7. Zovuta ndi Zolepheretsa

• Mtengo:Wapamwamba kuposa MC koma wolungamitsidwa ndi magwiridwe antchito.
• Kugwiritsa ntchito mopambanitsa:Kukhuthala kwakukulu kungalepheretse kugwiritsa ntchito.
• Kuchedwa:Itha kuchedwetsa kukhazikitsa ngati sikunali koyenera ndi ma accelerator.

8. Maphunziro a Nkhani

• Kuyika Matayilo Okwera Kwambiri:Zomatira zochokera ku HEC zidapangitsa kuti ogwira ntchito ku Burj Khalifa ku Dubai azikhala ndi nthawi yotalikirapo, ndikuwonetsetsa kuyika bwino pansi pa kutentha kwambiri.
• Kukonzanso Zakale:Madontho osinthidwa a HEC adasunga kukhulupirika pakukonzanso tchalitchi cha ku Europe pofananiza zinthu zakale.

9. Zochitika Zamtsogolo ndi Zatsopano

• Eco-Friendly HEC:Kupanga magiredi osinthika kuchokera ku magwero okhazikika a cellulose.
• Ma polima a Hybrid:Kuphatikiza HEC ndi ma polima opangira kuti apititse patsogolo kukana kwa ming'alu.
• Smart Rheology:Kutentha-kuyankha HEC kwa adaptive mamasukidwe akayendedwe mu nyengo kwambiri.

HEC's multifunctionality imapangitsa kuti ikhale yofunikira kwambiri pakumanga kwamakono, kusanja magwiridwe antchito, mtengo, ndi kukhazikika. Pamene luso likupitilirabe, HEC itenga gawo lofunikira kwambiri pakupititsa patsogolo zida zomangira zolimba komanso zogwira mtima.