Cholimba chochokera m'madzi sichisungunuka m'madzi, koma chili ndi mphamvu inayake yolimba (sichili ndi unyolo wa ionic kapena molecular wa milingo 2 ~ 3, malo akuluakulu apadera) a zowonjezera zachilengedwe. Ndi gulu la cholimba chochokera m'madzi , chomwe chimagwiritsidwa ntchito kwambiri mu zophimba, mapulasitiki, rabala, utoto ndi zophimba zina zachilengedwe, zomatira ndi mafakitale ena. Stiffener ndi gulu la mankhwala achilengedwe omwe amapangidwa ndi hydrogen kuti apange emulsion ya magulu a ester (onani Appendix A), cholimba chimapangidwa makamaka ndi stearic acid (ester), hydroxyl (makamaka gulu la ester), hydrogen bonding, hydroxyl, carboxyl, ndi magulu a amide. Kugwirizana kwa haidrojeni pakati pa magulu a ester kumapereka mphamvu yoyamwa madzi kapena kutupa. Chifukwa chake, cholimbacho chimatha kuthana bwino ndi utoto, guluu chifukwa cha kukula kwa kutentha kwa guluu wokwinya, wosweka kapena wosweka ndi zolakwika zina. Chili ndi kukana bwino kukalamba, kukana asidi ndi alkali, komanso mphamvu zabwino zamakanika, kukana nyengo, kukana kutentha ndi kukana kuzizira.
- mwachidule
Malinga ndi kapangidwe kake, stiffener imatha kugawidwa m'magulu awiri: osungunuka mafuta komanso osungunuka m'madzi. Mafuta osasunthika owumitsa mafuta amagwiritsidwa ntchito makamaka popaka, mapulasitiki ndi mphira ndi zokutira zina zakuthupi kuti zinthu zisawonongeke, kuphulika, kupukuta ndi zolakwika zina chifukwa cha kutentha kwakukulu. Madzi osungunuka amadzimadzi amakhala ndi mphamvu yochepetsera mafuta ndi madzi, zomwe sizingapangitse utoto kusweka, koma kusakaniza kwa pigment sikungatheke mokwanira kapena kumapangitsa kuti zikhale zovuta komanso zolakwika zina. Chifukwa cha kuumitsa si kubala ndi mankhwala (monga akiliriki asidi mtundu kapena sulfonate ester mtundu) kapena sabala ndi mankhwala, motero kuwongolera dispersibility wa hardener ndi kuonjezera kuumitsa luso kwambiri kusintha kutentha kukana, nyengo, kukana kuzizira ndi ntchito otsika kutentha. Pa nthawi yomweyo akhoza kuchepetsa chiwerengero cha zosungunulira mu ❖ kuyanika ndi kukulitsa stiffener madzi ofotokoza mu kuyanika ndondomeko nthawi zofunika kuchepetsa mtengo kupanga.
- II. The zofunika mankhwala kapangidwe
Ma stiffener nthawi zambiri amakhala ndi acetate esters, fatty acid esters, hydroxy acid esters kapena alkyl lipids. Ambiri a stiffener ali ndi madzi mayamwidwe, kotero organic solvents akhoza bwino omwazika mu emulsion ndi kuchepetsa mamasukidwe akayendedwe a stiffener dongosolo, angagwiritsidwenso ntchito monga stabilizer kapena emulsifier. Stiffener imakhalanso ndi zinthu zapadera za mtunduwo, monga: zosungunulira zochokera kuzitsulo zomwe zimagwiritsidwa ntchito mu mapulasitiki, mphira, zokutira, zomatira ndi mafakitale ena. Zodzikongoletsera zopangidwa ndi zosungunulira zimagwiritsidwa ntchito mu utoto ndi zokutira zokhala ndi zowumitsa bwino. Zamadzimadzi zimagwiritsidwa ntchito m'makampani azakudya kuti zisungidwe bwino. Insoluble m'madzi, sungunuka mu zosungunulira organic monga acrylates, akhoza synergize ndi zambiri organic solvents. Ikhoza kupanga kugwirizana kwa haidrojeni ndi asidi ndi alkali, imakhala ndi mphamvu ya chelating ya anhydride ndi mphamvu zina za ayoni, ndipo imatha kupangidwa ndi ma polima amitundu yosiyanasiyana. Ili ndi kukana kwanyengo yabwino, kuuma kwakukulu komanso kukana dzimbiri.
III. Kugwiritsa ntchito stiffener
Kusakaniza: stiffener mu osakaniza adzaoneka zambiri aggregation, mu kusakaniza ndi yoyambitsa ndondomeko kutulutsa chodabwitsa thovu, ndi kuyimitsidwa kwambiri. Zidzatsogolera mapangidwe a emulsion filimu pamwamba pa utoto ndi kuchititsa osauka stiffening zotsatira ndi mavuto ena. Choncho, chisamaliro chiyenera kulipidwa pa mlingo wa hardener, kuchuluka kwake kuyenera kukhala koyenera, ndipo kusakaniza kuyenera kukhala wandiweyani kwambiri, kuti musabalalitse mosagwirizana chifukwa cha matuza, zomwe zimakhudza kugwiritsa ntchito zotsatira.
Kusakaniza kwapang'onopang'ono: zida zosakanikirana zochepetsetsa zimagwiritsidwa ntchito kuti zisasunthike ndi stiffener ndikupanga madzi osakaniza a yunifolomu. Njirayi ili ndi mitundu iyi: choyamba onjezani otsika ndende ya stearic acid (ester), hydroxyl, hydrogen bonding ndi hydroxyl, ndiyeno osakaniza ndi stearic acid kapena gulu la ester kuti apange stiffener; kapena awiriwo ndi stiffener osakaniza pambuyo kuwonjezera mlingo woyenera wa madzi kupanga denatured ndi Kutentha.
Mtundu wa zosungunulira: Mtundu uwu wa choumitsira umachokera ku carboxyl (kapena hydroxyl) monga gulu la mankhwala achilengedwe kapena ma polima, omwe amasungunuka m'madzi ndikupanga kapangidwe ka copolymer (kawirikawiri kochokera ku ester). Kapena polymerization yake kuti ipeze unyolo wautali wa mamolekyulu, malo akuluakulu pamwamba, kukhuthala kwakukulu ndipo ili ndi mphamvu zabwino zofalikira komanso kukanikizana kwina mu dongosolo lopaka madzi (makamaka kumadalira kuchuluka kwa dongosolo la resin mu choumitsira) cha polima ya kapangidwe kolumikizidwa kwa chinthucho. Stiffener ndi madzi a emulsion, omwe amayamwa kutentha kwa chipinda ndipo amakumana ndi zochitika zingapo kuti apange kapangidwe ka netiweki. Stiffener nthawi zambiri amakhala ndi mchere wochepa, ma carboxylic acid (monga hydroxylamine, phosphate esters, kapena disodium sulfonate), kapena ma ayoni achitsulo ochepa ngati zowonjezera. Kugwiritsa ntchito kwake ndi kwakukulu kwambiri, kuphatikiza zopaka zochokera m'madzi , mafilimu apulasitiki, zomatira ndi ma polima okhala ndi choumitsira angagwiritsidwenso ntchito ngati maziko a zopaka kapena zinthu zapulasitiki.
- Zopangira madzi kapena zopangira mafuta: zimagwiritsidwa ntchito pamitundu yonse ya zokutira, nthawi zambiri zopangidwa zapakati;
- sanali madzi sungunuka: akhoza kusungunuka m'madzi ndiyeno pang'onopang'ono omwazika mu emulsion uniformly omwazika;
- Kusakaniza kolimba gawo: emulsion madzi akhoza kuwonjezeredwa ku zinthu zolimba ndi zomatira zosiyanasiyana organic ndi kusonkhezera bwino (munali organic fillers) chifukwa moti zinkamveka; kuwonjezera kuchuluka koyenera kwa stiffener kumapangitsa kuti stiffener ikhale yolimba kwambiri kuti ipititse patsogolo makina ake komanso kukana kukalamba;
- Madzi owumitsa zokutira.
- IV. Kugwiritsa ntchito stiffening agent mu zokutira organic, mapulasitiki, labala ndi mafakitale ena
Kugwiritsa ntchito zinthu zomatira m'zokutira zochokera m'madzi makamaka kumasintha ma polyester osakhuta, ma copolymer emulsions, ndi zina zotero, zomwe zingathandize kukonza magwiridwe antchito a ma resin opangidwa. Polima womatira sikuti ali ndi kuuma kwapamwamba kokha, komanso ali ndi kukana bwino madzi komanso kukana ukalamba. Akagwiritsidwa ntchito, chinthu chomatira chimatha kuchepetsedwa kukhala yankho lokhala ndi kuchuluka kwa 20-40%, kenako nkuwonjezeredwa ku ketulo yochitira zinthu kuti chikhale ndi emulsification reaction, ndipo emulsion yomatira imatha kupezeka mutawonjezera kuchuluka koyenera kwa kuchepetsedwa. Pamene emulsion ili ndi zosungunulira zachilengedwe zoposa gawo lina, polymerization ndi kuwonongeka zidzachitika, zomwe sizidzangochepetsa magwiridwe antchito a resin komanso zimayambitsa kukalamba kwa zida kapena zinthu. Chifukwa chake, kuwonjezera kuchuluka koyenera kwa chinthu chomatira pakupanga ndi dongosolo la polima kumatha kusintha momwe chimagwiritsidwira ntchito ndikupangitsa kuti chinthucho chikhale chosinthasintha komanso chokana kutentha kwambiri.
- V. Chenjezo
- Chowumitsacho chidzawola kukhala zinthu za polar pansi pa kutentha kwakukulu ndi chinyezi chambiri, choncho chiyenera kusindikizidwa ndikusungidwa kuti chiteteze kutulutsa ndi kuipitsidwa kwa mankhwala.
- The yosungirako ayenera mpweya wokwanira ndi youma, kusunga chipinda youma.
- Pewani kuwonetsedwa ndi dzuwa.
- Onjezani ndikugwiritsa ntchito pang'onopang'ono mukamagwiritsa ntchito.
- Osasakaniza kapena kusungunula mankhwala ndi madzi, kapena kusakaniza ndi mankhwala ena, fillers, inki, fillers kapena inki ngati ntchito.
- Ndizoletsedwa kusakaniza ndi lead, mercury ndi zina zowonjezera zitsulo zolemera.
Zambiri zokhudza SINOYQX modified melamine formaldehyde resin, chonde titumizireni imelo: [email protected] , kapena titumizireni uthenga pa: +86-28-8411-1861.
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