1. cellulose ether - cellulose ether predecessor
Cellulose ether ndiye polysaccharide yochuluka kwambiri padziko lapansi masiku ano.Magwero akuluakulu a cellulose achilengedwe ndi thonje, mitengo, zomera zam'madzi, udzu ndi zina zotero.Thonje lili ndi mapadi 92-95%;Flax ili ndi pafupifupi 80% ya cellulose;Wood imakhala ndi pafupifupi 50% ya cellulose.
2, kapangidwe ka cellulose ether
Cellulose ether ndi polysaccharide yovuta yomwe ili ndi masauzande a mayunitsi a shuga mu molekyulu, formula ya mankhwala ndi (C6H10O5) N. Gulu la D-glucose limamangidwa ndi β - 1,4 glucoside bond.
Mavuto wamba ndi zifukwa zazikulu za kukana madzi putty pa khoma lamkati
Njira zodziwika zothetsera mavuto
Neutral putty:
Ufa: zinthu zosakwanira simenti, mapadi etere posungira madzi sikokwanira, kashiamu wolemera kashiamu ndi otsika.
Ntchito yomanga: kusinthidwa ndi bentonite ndi starch ether.
Ng'oma yopanda kanthu;Ndipo kumamatira khoma chifukwa chosakwanira.
Layering: mawonekedwe processing.
Mphamvu: Itha kusinthidwanso polemba ufa wa calcium.
Lime calcium putty:
Mavuto ndi ng'oma yopanda kanthu, chikasu cha depowder, chomanga sichili chabwino, depowder, stratification, cracking, pambuyo pakukula;
Depowder: zinthu za simenti zosakwanira, kusakwanira kwa cellulose kusungirako madzi kapena kusakwanira kowonjezera, laimu kashiamu siwoyera.
Kumanga kosakwanira: bentonite ndi starch ether kuti zitheke.
Ng'oma yopanda kanthu;Ndipo kusakwanira kwa khoma kumamatira chifukwa cha kuwonjezera koyenera kwa latex ufa.
Layering: mawonekedwe processing.
Yellow: kusankha kolakwika kwa cellulose ether.
Kung'amba: Kusweka kwapansi kapena kung'amba mwamphamvu, kukuta kwambiri.
Pambuyo thickening: katundu kashiamu madzi mayamwidwe mlingo ndi osiyana, Ndi bwino kusankha ziro madzi mayamwidwe kapena otsika kwambiri katundu kashiamu ufa;Gray calcium imakhala ndi GaO yosagawika.
Putty yopangidwa ndi simenti:
Mavuto a ng'oma yopanda kanthu, yomanga si yabwino, depowder, delamination, cracking, kusakwanira madzi kukana, coagulation zabodza;
Depowder: zinthu za simenti zosakwanira, cellulose ether yosakwanira kusunga madzi kapena kuonjeza kosakwanira.
Kumanga kosakwanira: bentonite ndi starch ether kuti zitheke.
Ngoma yopanda kanthu: ndi kumamatira pakhoma chifukwa chosakwanira, kuwonjezera koyenera kwa ufa wa latex.
Layering: mawonekedwe processing.
Yellow: Kusankha cellulose molakwika.
Kusakwanira kwa madzi kukana: ufa wosakwanira wa latex ndi zinthu zosakwanira za simenti.
Kung'amba: Kusweka kwapansi kapena kusweka kwamphamvu kwambiri, zokutira ndizokhuthala kwambiri, ndi putty kudzaza dzenje.
Kukhazikika kwabodza: sodium gluconate ikhoza kuwonjezeredwa kuti italikitse nthawi yogwira ntchito.
Nthawi yotumiza: Apr-28-2022