Zouma zokhala ndi madzi ndi zowonjezera zomwe sizisungunuka m'madzi, koma zimakhala ndi zinthu zina zowumitsa (palibe ma ionic kapena ma molekyulu atali mpaka 2 ~ 3, malo akuluakulu enieni). Ndi gulu la stiffener yochokera kumadzi, yomwe imagwiritsidwa ntchito makamaka mu utoto, pulasitiki, mphira, utoto ndi zokutira zina zakuthupi, zomatira ndi mafakitale ena. Stiffener ndi gulu la mankhwala opangidwa ndi hydrogenation a ester magulu mu mawonekedwe a emulsions (onani Zowonjezera A), stiffener imapangidwa makamaka ndi stearic acid (ester), magulu a hydroxyl (makamaka magulu a ester), hydrogen bond, hydroxyl, carboxyl ndi magulu amide. Kulumikizana kwa haidrojeni pakati pa magulu a ester kumabweretsa kuyamwa kapena kutupa kwa ouma. Choncho, stiffener akhoza bwino kugonjetsa zofooka za ❖ kuyanika ndi zomatira monga makwinya, kuswa kapena peeling wosanjikiza zomatira chifukwa cha kukula kwa kutentha, ndipo ali kwambiri kukana ukalamba ndi asidi ndi alkali kukana, komanso katundu makina abwino, nyengo ndi kutentha kukana ndi kukana kuzizira.
Olimba amatha kugawidwa m'magulu awiri, osungunuka mafuta ndi osungunuka m'madzi, malinga ndi kapangidwe kawo. Mafuta osungunula mafuta amagwiritsidwa ntchito makamaka mu zokutira zakuthupi monga utoto, mapulasitiki ndi mphira pofuna kupewa zolakwika monga matuza, kusweka ndi kuphulika kwa zinthu chifukwa cha kutentha kwakukulu. Chowumitsa chosungunuka m'madzi chimakhala ndi mphamvu yochepetsetsa pazitsulo zonse za mafuta ndi madzi ndipo sichisokoneza utoto, koma sichimakhudzidwa kwathunthu ndi kusakaniza kwa pigment kapena kumapangitsa mitambo ndi zolakwika zina. Chifukwa cha udindo wa kuumitsa si kubala ndi mankhwala (monga akiliriki kapena sulphonate mtundu) kapena palibe ndi mankhwala, motero kuwongolera kubalalitsidwa kwa woumitsa wothandizila ndi kuonjezera kuumitsa luso kwambiri kusintha kutentha kukana, kukana nyengo, kukana kuzizira ndi ntchito otsika kutentha. Amachepetsanso kuchuluka kwa zosungunulira zomwe zimagwiritsidwa ntchito popaka ndikuwonjezera nthawi yofunikira pakuyanika kwamadzi owumitsa, kuchepetsa ndalama zopangira.
Basic mankhwala kapangidwe
Ma stiffener nthawi zambiri amakhala ndi acetate, mafuta acid esters, hydroxy acid ester compounds kapena alkyl lipid compounds. Ambiri stiffeners ndi madzi absorbent ndipo motero kuchepetsa mamasukidwe akayendedwe a stiffener dongosolo bwino dispersing organic solvents mu emulsion. Itha kugwiritsidwanso ntchito ngati stabilizer kapena emulsifier. Ma Stiffeners amapezekanso mumitundu yamachitidwe apadera. Monga: zosungunulira ozikidwa hardener ntchito mapulasitiki, mphira, zokutira, zomatira ndi mafakitale ena; zosungunulira-based hardener ntchito utoto ndi zokutira zabwino kuumitsa zotsatira; madzi ntchito makampani chakudya kukhalabe processability wabwino; osasungunuka m'madzi, osungunuka mu ma acrylates ndi zosungunulira zina organic; akhoza kukhala synergistic ndi zosungunulira zambiri organic; imatha kupanga mgwirizano wa haidrojeni ndi ma acid ndi maziko; wamphamvu chelating mphamvu asidi anhydride ionic mphamvu; angagwiritsidwe ntchito ndi mitundu yosiyanasiyana polymerization; nyengo yabwino; kuuma kwakukulu ndi kukana dzimbiri.
Njira yogwiritsira ntchito Stiffener
1, oyambitsa: Stiffener mu osakaniza adzaoneka kwambiri anasonkhana, mu kusanganikirana ndi oyambitsa ndondomeko kubala chodabwitsa thovu, ndi kwambiri inaimitsidwa nkhani, zidzachititsa mapangidwe emulsion filimu padziko utoto ndi chifukwa osauka stiffening zotsatira ndi mavuto ena. Choncho, chidwi chiyenera kuperekedwa kwa kuchuluka kwa stiffener, kuchuluka kwa kuwonjezera kuyenera kukhala koyenera, kusakaniza kuyenera kukhala kochuluka kwambiri, kuti musabalalitse mosagwirizana chifukwa cha matuza, okhudza kugwiritsa ntchito zotsatira.
2, oyambitsa: ntchito otsika-liwiro yogwira mtima zida kuti stiffener hydration ndi mapangidwe yunifolomu kusasinthasintha yunifolomu osakaniza madzi, njira ali zotsatirazi: (1) choyamba kuwonjezera otsika ndende ya asidi stearic (ester), hydroxyl, hydrogen kugwirizana ndi hydroxyl, ndiyeno wothira asidi stearic kapena ester kupanga magulu stiffe, etc. Kapena ziwirizo pamodzi kukhala osakaniza oumitsa; mutatha kuwonjezera madzi okwanira ndi kutentha kuti musinthe.
3, zosungunulira-zochokera: mtundu wa stiffener ndi gulu la mankhwala organic kapena ma polima zochokera carboxyl (kapena hydroxyl); kusungunuka m'madzi ndikupanga copolymer (nthawi zambiri ester-based) kapangidwe; kapena ma polymerization ake kuti apeze unyolo wautali wa maselo, malo okulirapo enieni, kukhuthala kwapamwamba komanso kufalikira kwabwino komanso m'madzi opangira madzi. Stiffeners ndi emulsion-ngati zakumwa zomwe zimatengedwa kutentha kwa firiji ndikupanga maukonde pambuyo pa zochitika zingapo (onani zowonjezera A ndi B). Zowumitsa nthawi zambiri zimakhala ndi zowonjezera pang'ono monga mchere, ma carboxylic acid (monga ma hydroxyl amines, phosphate esters kapena disodium sulphonates) kapena ma ayoni ochepa achitsulo.
Mitundu yake yogwiritsira ntchito ndi yotakata kwambiri, kuphatikizapo zokutira zokhala ndi madzi, mafilimu apulasitiki, zomatira ndi ma polima okhala ndi zowumitsa angagwiritsidwenso ntchito ngati maziko a zokutira kapena zinthu zapulasitiki.
1, opangidwa ndi madzi kapena opangira mafuta: oyenera mitundu yonse ya zokutira, zambiri zapakatikati; 2. sanali madzi sungunuka: akhoza kusungunuka m'madzi ndiyeno pang'onopang'ono omwazika mu emulsion wogawana omwazika.
3, olimba-gawo kusanganikirana: emulsion madzi akhoza kuwonjezeredwa zosiyanasiyana zomatira organic pamodzi ndi zinthu Zolimba ndi wothira bwino (ndi organic fillers) kwa kusakaniza; kuwonjezera kuchuluka kwa stiffener kumapangitsa kuti stiffener ikhale ndi kuuma kwina kwake kuti ipititse patsogolo makina ake komanso kukana kukalamba (onani Zowonjezera B).
- Zopaka zomangira zamadzi ndi
Olimba mu zokutira organic, mapulasitiki, mphira ndi mafakitale ena
Stiffener mu zokutira madzi ofotokoza makamaka ntchito kusintha unsaturated polyesters, copolymer emulsions, etc. Ikhoza kupanga kupanga utomoni ntchito bwino. The polima pambuyo kuumitsa osati mkulu khalidwe kuuma, komanso ali bwino madzi kukana ndi kukana kukalamba. Angagwiritsidwe ntchito ndi choyamba diluting ndi stiffener mu njira ndi ndende ya 20-40%, ndiye kuwonjezera kwa riyakitala kwa emulsification anachita ndi kuwonjezera yoyenera kuchuluka kwa dilution kupanga mkulu stiffening emulsion. Pamene emulsion lili oposa ena peresenti ya zosungunulira organic, chodabwitsa cha polymerization ndi kuwonongeka zidzachitika, amene osati amachepetsa ntchito ya utomoni komanso zimayambitsa kukalamba zida kapena mankhwala. Choncho pakupanga zokutira ndi polima machitidwe kuwonjezera mlingo woyenera wa stiffener akhoza kusintha ntchito zotsatira zake, kotero kuti mankhwala kukhala bwino kusinthasintha ndi mkulu kutentha kukana.
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