Iingubo zangaphandle zidlala indima ephambili ekukhuseleni izakhiwo kwizinto ezisingqongileyo, ukubonelela ngobuhle kunye nokuqinisekisa ukuhlala ixesha elide. Siphengulula kwiipropathi ze-cellulose ethers, indima yazo njengezinto ezityebileyo kunye nezilungisi zerheology, kunye nefuthe lezongezo kwiipropathi ezinje ngokuncamathela, ubume bemozulu, kunye nokuqina kokutyabeka kukonke. Kubenzi bamayeza kunye nabavelisi abajolise ekuphuhliseni umgangatho ophezulu wokugquma wangaphandle, ukuqonda okupheleleyo kwezi zithako kubalulekile.
Yazisa:
Iingubo zangaphandle zibalulekile ekukhuseleni izakhiwo kwiimeko zemozulu ezinzima, imitha ye-UV, ukungcola kunye nezinye izinto zokusingqongileyo. I-cellulose ethers ephuma kwimithombo yendalo ye-cellulose kunye noluhlu lwezongezo lunegalelo elikhulu ekuphuculweni kwezi zitya.
Iellulosi ethers kwiingubo zodonga zangaphandle:
2.1. Isishwankathelo se-cellulose ethers:
I-cellulose ethers ibandakanya i-methylcellulose (MC), i-hydroxyethylcellulose (HEC), i-hydroxypropylcellulose (HPC), i-carboxymethylcellulose (CMC), njl., ezisetyenziswa ngokubanzi kwizicelo zangaphandle ngenxa yeempawu zabo ezizodwa. Kwipeyinti eludongeni. Ezi polymers zisebenza njengama-thickeners, binders, kunye ne-rheology modifiers, zinika iingubo zabo iimpawu ezibalulekileyo.
2.2. Iimpawu zokujiya:
I-cellulose ethers zi-thickeners ezisebenzayo ezandisa i-viscosity yeengubo, ukukhuthaza ukusetyenziswa okungcono kunye nokunciphisa ukugoba. Isakhiwo se-molecular of cellulose ethers sigcina amanzi, siqinisekisa i-viscosity efanelekileyo kunye nokuhambelana kwesicelo.
2.3. Ukuguqulwa kweRheological:
Ukulawula ukuziphatha kwe-rheological yeengubo zangaphandle kubalulekile ekufezekiseni iipropati ezifunwayo zesicelo. I-cellulose ethers idlala indima ephambili ekutshintsheni i-rheology yeengubo, ukuphucula ukuhamba kwazo kunye neempawu zokulinganisa. Oku kwandisa ukusetyenziswa lula kwaye kubangela ukutyeba okufanayo kokwambathisa.
Izongezo zokuphucula ipeyinti yangaphandle:
3.1. Umxhasi wokuncamathela:
Ukubambelela yinto ephambili echaphazela ukusebenza kweengubo zangaphandle zodonga. Izongezo ezahlukeneyo, ezinje nge-silanes kunye neepolima ze-acrylic, ziphucula ukuncamathela ngokukhuthaza umanyano olomeleleyo phakathi kokutyabeka kunye ne-substrate. Oku kuqinisekisa ukuqina kwexesha elide kunye nokuchasana nokuxobuka okanye ukudumba.
3.2. Izongezo zemozulu:
Ipeyinti yangaphandle ibonakala kwiimeko ezahlukeneyo zemozulu, kuquka ukukhanya kwelanga, imvula, kunye nokuguquguquka kobushushu. I-UV stabilizers, ukuthintela ukukhanya kwe-amine stabilizers (HALS), kunye nezinye izongezo zemozulu zikhusela iingubo ekuthotyweni okubangelwa yimitha ye-UV kunye neenkqubo ze-oxidation, ngaloo ndlela zandisa ubomi babo benkonzo.
3.3. I-Antifungal kunye ne-antimicrobial agents:
Imiphezulu yangaphandle ichaphazeleka kukukhula kwebhayoloji, kubandakanya ukungunda kunye ne-algae. Ukongezwa kwe-antifungal kunye ne-antibacterial agents (ezifana ne-biocides) kuthintela ukukhula kwe-microorganisms kunye nokugcina ukubonakala kunye nokuqina kwengubo.
3.4. Iarhente yokuthintela amanzi:
Ii-agent zokukhusela amanzi ziyimfuneko kwiipende zangaphandle zokuthintela ukungena kwamanzi, oku kunokukhokelela ekuthotyweni komsebenzi kunye nokulahlekelwa. I-Silicones, i-silanes kunye ne-fluorinated compounds zisetyenziswa ngokuqhelekileyo ukugxotha amanzi okwenza umqobo we-hydrophobic kunye nokwandisa ukuchasana kwengubo kumonakalo wamanzi.
3.5. Isixhasi sokuxhathisa impembelelo:
Umphezulu wangaphandle usesichengeni somonakalo osuka kwimithombo eyahlukeneyo, kuquka isichotho okanye ukudibana komzimba. Ukongezwa kwezixhasi zokuchasa impembelelo, ezifana neepolymers ze-elastomeric okanye i-microspheres, kunokuphucula ukukwazi ukugubungela ukunyanzeliswa komatshini kunye nokugcina iimpawu zayo zokukhusela.
Intsebenziswano phakathi kwe-cellulose ethers kunye nezongezo:
Indibaniselwano ye-cellulose ethers kunye nezongezo kwiipeyinti zangaphandle zihlala zenza umphumo we-synergistic ophucula ukusebenza ngokubanzi. Ubume be-thixotropic be-cellulose ethers buncedisa ukusabalalisa kunye nokuzinzisa iimpawu zezongezo ezithile, ukuphucula ukusetyenziswa kunye nokwakheka kwefilimu.
Imizekelo kunye nemizekelo:
Eli candelo libonelela ngemizekelo yehlabathi yokwenyani yokwenziwa kwepeyinti eyimpumelelo yangaphandle edibanisa i-cellulose ethers kunye nezongezo ezahlukeneyo. Izifundo zophando ziqaqambisa imingeni ethile ejongiwe, uphuculo oluphunyeziweyo, kunye nempumelelo iyonke yoyilo phantsi kweemeko ezahlukeneyo zokusingqongileyo.
Iintsingiselo zexesha elizayo kunye nezinto ezintsha:
Njengoko imfuno yokwaleka kwangaphandle yokusebenza okuphezulu iqhubeka nokukhula, ishishini lingqina uphando oluqhubekayo kunye nophuhliso. Iindlela zexesha elizayo zingabandakanya ukuhlanganiswa kwee-coatings ezihlakaniphile, i-nanomaterials eziphambili kunye nezongezo ezizinzileyo zokuphucula ngakumbi ukuqina, ubuhlobo bendalo kunye nokusebenza kakuhle kwamandla.
ukuququmbela:
I-cellulose ethers kunye nezongezo zidlala indima ebalulekileyo ekuphuculeni ukusebenza kweengubo zangaphandle. Ukuqondwa ngokucokisekileyo kweepropathi zabo kunye nokunxibelelana kubalulekile kubavelisi kunye nabavelisi abafuna ukuphuhlisa iingubo ezinokuqina okuphuculweyo, ukunamathela, ubume bemozulu kunye nomgangatho uwonke. Uphuhliso oluqhubekayo lwemathiriyeli kunye nobuchwepheshe kule ndawo lunika ithemba kwinkqubela phambili eqhubekayo kwiingubo zangaphandle kushishino lokwakha.
Ixesha lokuposa: Dec-18-2023