Kwangaxeshanye, inokuphucula ngokufanelekileyo amandla oxinzelelo kunye namandla okuchebaHPMC hydroxypropyl methyl cellulose, ukuphucula ngakumbi umphumo wokwenene wokwakha ubunjineli, ukuphucula ukusebenza kakuhle. I-HPMC i-hydroxypropyl methyl cellulose inokuphucula amandla okubambelela kwi-putty powder, ukunciphisa imeko yokumiswa, ukuqinisekisa ukuphumelela kokwakhiwa kobunjineli. I-Hydroxypropyl methyl cellulose inokunyusa ixesha lokuhamba kwaye ijongane nengxaki yokungafumani mandla kunye nokungonelanga kwamandla oqobo kwinkqubo yokwakha yobunjineli.
Ukusebenza kokutshixa kwamanzi okuphezulu kodaka lolwakhiwo lobunjineli kunye nodaka lwe-putty lunokwenza ikhonkrithi ixutywe ngokwaneleyo, kwaye ngokuqinisekileyo inokuphucula amandla okuqinisa udaka. Kwangaxeshanye, amandla acinezelayo kunye namandla okucheba e-hydroxypropyl methyl cellulose anokuphuculwa ngokufanelekileyo ukuze kuphuculwe ngakumbi isiphumo esiyinyani sokwakhiwa kobunjineli kunye nokuphucula ukusebenza kakuhle.
Unyana wokumelana nokufuma,HPMCi-hydroxypropyl methyl cellulose, umphumo we-hydroxypropyl methyl cellulose kwi-putty powder, ukukhusela ukomisa kunye nokoma okubangelwa ukuphuma kwamanzi ngokukhawuleza. I-Hydroxypropyl methyl cellulose inokuphucula i-adhesive force of putty powder, ukunciphisa imeko yokumiswa, ukuqinisekisa ukuphumelela kokwakhiwa kobunjineli.
Isitshixo se-HPMC hydroxypropyl methyl cellulose ngokutshixa amanzi, ukujiya, ukumanzisa kunye nezinye iziphumo, ukujiya, ukumanzisa kunye nezinye iziphumo zinesiphumo sokuqala sokumisela. I-Hydroxypropyl methyl cellulose inokunyusa ixesha lokuhamba kwaye ijongane nengxaki yokungafumani mandla kunye nokungonelanga kwamandla oqobo kwinkqubo yokwakha yobunjineli.
I-HPMC hydroxypropyl methyl cellulose kudaka lokugquma eludongeni idlala indima ephambili kwisiphumo sebhondi, kwaye yonyusa amandla oxinzelelo lwemathiriyeli ekrwada. Umdaka kulula kakhulu ukugubungela, ukuphucula ukusebenza kakuhle, kunye nomsebenzi osisiseko wokumiswa kokuchasana nokuhamba kunye nesiphumo esisebenzayo. Ukusebenza kokuvalwa kwamanzi kwe-hydroxypropyl methyl cellulose kunokunyusa ixesha lokuhamba kodaka, ukuphucula ukuchasana nokuqiniswa kunye ne-anchoring, ukuphucula umgangatho womhlaba, kunye nokuphucula amandla okudibanisa.
I-binder ye-tile e-soluble kakhulu yamanzi isusa imfuno ye-tale efakwe ngaphambili okanye emanzi phantsi kunye neziseko, ngakumbi ukuphucula amandla oxinzelelo okudibanisa. Ixesha lolwakhiwo lobunjineli oluludaka lide, licokisekile, linolungelelwaniso, ulwakhiwo olufanelekileyo lobunjineli, olunokumelana nokufuma okuhle.
Kwintsimi yeengubo zendalo zokwakha i-latex, i-hydroxypropyl methyl cellulose ingasetyenziselwa i-agent ye-filmming agent, i-tackifier, i-demulsifier kunye ne-thickener, ukwenzela ukuba ifilimu yeplastiki inokumelana nokugqoka okungcono, ukukhupha kunye nokunamathela. I-pH esetyenziselwa ukuphucula i-interfacial tension ichazwe kakuhle, kwaye umxube onesisombululo se-organic ulungile kwaye unokuguda okuhle.
Uphuhliso loQoqosho Iingubo zoKwakha zinamandla alungileyo, ukugqithiswa kwamanzi okugqwesileyo kunye nokumelana nokuguga okulungileyo. Iskimu soyilo lwefomula yokwaleka ilitye lokwenyani singundoqo. Itoni yomgangatho ophezulu we-lacquer iqulunqwe malunga ne-300KG i-emulsion ecocekileyo ye-styrene-acrylic, i-650KG ecocekileyo yendalo yesisombululo samanzi kunye namanye amacandelo. Iilacquers zokwenyani ezisemgangathweni zibonakaliswa ngamayeza amaninzi okuthambisa. Xa ukubunjwa kolwelo lwe-emulsion yi-50%, umthamo we-emulsion ye-300KG yokuthambisa emva kokumisa malunga ne-150 ilitha, kwaye umthamo we-650KG isanti enzima malunga ne-228 ilitha. Oko kukuthi, kule meko, ipeyinti yamatye yangempela (ixabiso lokugxininisa umbala we-paste) ngu-60%. Ngenxa yobukhulu beqhekeza elikhulu kunye nembonakalo engaqhelekanga yesanti ecocekileyo, phantsi kwesiseko sokuhlalutya ubungakanani bamasuntswana athile, isambatho sodonga sangaphandle esomileyo sinokuthi sibe malunga nexabiso loxinzelelo lweCPVC).
Kwi-viscosifier, ukuba i-viscosity ye-cellulose efanelekileyo ikhethiwe, i-coating yangaphandle yodonga inokuvelisa iinkcukacha ezithe kratya, umaleko wepeyinti ogxininisiweyo, ukuze kuphunyezwe izibonelelo ezintathu zokugquma eludongeni lwangaphandle. Imimiselo emithathu yokwakha iingubo. Enyanisweni, ukusetyenziswa kwelitye lezoqoqosho kunye ne-qi, i-toni ye-recipe eyimfihlo ye-solvent 100-160kg, i-750kg yesanti yepleyiti enemibala, i-20kg (kubandakanywa izongezo zokugquma, izibulala-zinambuzane, i-fungicides, i-adhesives, njl. amanzi kunye neemveliso zokunakekelwa kwesikhumba. Olu hlobo ngenene ngenene ipeyinti yamatye PVC ngokubanzi phakathi 75%? Phakathi kwe-85%, kwinkqubo yokusebenza yomisiwe, ngokwenene ipeyinti yepeyinti yokwenyani kunzima ukuseka umaleko wepeyinti oneenkcukacha kunye noluqilima. Ke ngoko, usetyenziso olupheleleyo lwe-emulsion eyimfihlo yokuthambisa iresiphi yesiphumo sokwenziwa kwe-emulsion, ukuze i-coating ilingane kangangoko kunokwenzeka.
Iingubo zezakhiwo zamatye zangempela zineempawu ze-viscosity ephantsi (ubunzima obuphezulu be-molecular). Ngenxa yokunyuka kwexabiso lempahla ye-cellulose, i-viscosity ye-cellulose esetyenzisiweyo itshintshile ukusuka kwi-30000 ukuya kwi-50000,80000,100000, nokuba inyuswe ngo-200000, injongo kukunciphisa inani elipheleleyo le-cellulose kwi-methyl cellulose (HEC). ) kwi-hydroxyl acrylic cellulose (HPMC); Ukusetyenziswa kwe-methyl methyl cellulose HPMC kuya kunciphisa kakhulu ukugxothwa kwamanzi kwipeyinti yokwakhiwa kwelitye lokwenene, kwaye emva koko kuphuculwe i-viscosity ye-cellulose (ubunzima be-molecular mass) iya kuba yipeyinti yokwenene yepeyinti yepeyinti yemveliso? Impendulo kukuba ukusebenza komgangatho wepeyinti yamatye kuya kuba kubi ngakumbi!
I-HPMC inokohlulwa ibe ziintlobo ezinyibilikayo ngoko nangoko kunye nobushushu. Xa amanzi abandayo esasazeka ngokukhawuleza kwaye ehla emanzini, i-HPMC inokohlulwa ibe ziindidi ezinyibilikayo ngoko nangoko kunye nobushushu. Ngeli xesha, ulwelo alunayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini, kwaye akukho mvakalelo yokwenene yokunyibilika. Emva kwe-2min, i-viscosity yolwelo ikhula ngokucothayo, ivelisa isisombululo esicacileyo se-viscous colloid. Xa izinto ezishushu ze-solvent zendalo ziqokelelana emanzini abandayo, zinokusasazeka ngokukhawuleza emanzini ashushu kwaye zichithe emanzini ashushu. Xa ubushushu be-ambient buncitshiswe kwiqondo elithile lobushushu, i-viscosity iya kwenzeka ngokuthe ngcembe de iveliswe isisombululo se-viscous colloidal esicacileyo. Uhlobo lwe-thermal organic solvent lusetyenziswa kuphela ngaphakathi eludongeni lwe-putty powder kunye nodaka. Kwiglue elulwelo kunye neengubo, kukho inani labantu elingenakusetyenziswa. Ukukhawuleza - uhlobo lwe-solubility lunecandelo lesicelo ngokubanzi. Ingasetyenziswa njengodonga lwangaphakathi lwe-putty powder kunye nodaka, kunye neglue yayo yolwelo kunye nokwaleka. Akukho taboo.
Ukunyibilika kwamanzi ashushu: kuba i-HPMC emanzini ashushu ayinyibiliki, ngoko ke i-HPMC kwikhonkco loqobo inokusasazwa ngokulinganayo kumanzi ashushu, ize inyibilike ngokukhawuleza xa ipholisa. Iindlela ezimbini zakudala zichazwa ngolu hlobo lulandelayo:
1) Beka amanzi ashushu owafunayo kwisitya kwaye uwafudumeze malunga ne-70 ℃. Xuba kancinane, kancinane wongeza i-hydroxypropyl methyl cellulose, ngokuthe ngcembe i-HPMC idada phezu komlambo, emva koko ivelise udaka lwe-sludge efrijini ngokucothayo ekuxubeni.
2) Yongeza i-1/3 okanye i-2/3 yamanzi kwisitya, uyifudumeze kwi-70 ℃, uyifudumeze kwi-70 ℃ ukusasaza i-HPMC, kwaye ulungiselele i-sludge yamanzi ashushu; Emva koko, amanzi abandayo asele afakwe kwi-sludge eshushu kwaye axutywe kunye nomxube wokupholisa emva kokupholisa.
Indlela yokuxuba umgubo: I-HPMC yomgubo kunye ne-blender kunye nezinye izithako ezininzi zemichiza yomgubo umxube owaneleyo, uze udibanise amanzi ukunyibilika. Ngeli xesha, HPMC inokunyibilika kwimeko akukho agglomeration, kuba ikona nganye encinane umgubo kancinane HPMC, xa amanzi ngoko nangoko ukunyibilika - olu hlobo lwendlela isicelo nje udonga lwangaphakathi putty umgubo kunye nabavelisi udaka. [HPMC] njenge arhente yokuxhwitha kunye nearhente yokufuma kudaka lweputty eludongeni lwangaphakathi.
Le yinto eqhelekileyo ye-hydroxypropyl methyl cellulose (HMPC) yokukrazula okwenziweyo, ekufutshane ne-viscoelastic substance (ingakumbi i-mucin) kwiinyembezi. Ibambelela kumphezulu weliso nge-adsorption ye-polymer, kwaye ilinganisa indima ye-conjunctival mucin, ukwenzela ukuba kuphuculwe imeko yokunciphisa i-mucin esweni kunye nokwandisa umphumo wokumanzisa kwe-cornea.
Kwiputty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwemisebenzi emithathu. Ukutyeba, i-cellulose inokugqithwa ukunqunyanyiswa, ukuze isisombululo sihlale sifana phezulu nasezantsi indima yokuxhoma okuchasayo. Ukugcinwa kwamanzi: yenza iputty powder yome kancinci, i-calcium encedisayo engwevu kwisenzo sokusabela kwamanzi. Ukwakhiwa: i-cellulose lubrication, inokwenza i-putty powder inokwakhiwa okulungileyo. I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, kodwa idlala indima exhasayo kuphela.
Ipeyinti yokuthungwa iguquguquka ngakumbi ekukhethweni kombala, kwaye inokufikelela kwisiphumo esifanelekileyo soyilo lobugcisa, kunye nepeyinti yamatye yokwenene ekulandeleni ubomi bendalo, ingcono kunepeyinti yokuthungwa, nganye inamandla ayo. Ipeyinti yokuthungwa kunye ne-lacquer kwinkqubo yokuvelisa, ukwenzela ukugcina ngokusisigxina umbala wokuqala, ngokubanzi kwinkqubo yokugqibela, kufuneka sisebenzise i-varnish (ioli ekhanyayo) ukutshiza ukukhusela umphumo wabo wobugcisa okanye umphumo wamatye.
I-Lacquer, i-texture yepeyinti luhlobo lwepeyinti, olusetyenziselwa ukuhlobisa udonga. Iwebhusayithi esemthethweni ye-diatom yodaka ishwankathela umahluko phakathi kwepeyinti yokuthungwa kunye ne-lacquer, i-texture yepeyinti kunye ne-lacquer yokuhlukanisa indlela, oku kulandelayo ukubona umehluko phakathi kwe-lacquer kunye nepeyinti yokuthungwa.
Amaxabiso aphezulu e-latex aphezulu, abavelisi ukuze kugcinwe iindleko, yongeza nje inani elincinci lomlinganiselo we-emulsion, emva kokwenza ipeyinti yamatye ngokwenene ifilimu eyomileyo ikhululekile, ingxinano eyaneleyo, ifilimu yepeyinti yizinga elibi kakhulu, amandla oxinzelelo ayancipha, kanye xa udibana nemozulu yemvula ixesha elide, imvula iya kungena kwifilimu yepeyinti, ngenene ipeyinti yamatye emhlophe.
Abanye abavelisi ekuveliseni i-lacquer, bahlala befaka i-carboxymethyl cellulose eninzi, i-hydroxyethyl cellulose njenge-thickener, ezi zinto zi-soluble emanzini okanye i-hydrophilic, ifilimu yokugqoka eshiywe kuluhlu, inciphisa kakhulu ukuxhathisa kwamanzi kwi-coating.
Ixesha lokuposa: Jun-09-2022