Lefatše la likhomaretsi lea khahla, le tletse ka lisebelisoa tse ngata, liqapi le lisebelisoa.Har'a likarolo tse ngata tse etsang li-adhesive formulations, li-thickening agents li phetha karolo ea bohlokoa.Mahlahana ana a na le boikarabelo ba ho fana ka viscosity le botsitso ho sekhomaretsi, ho etsa bonnete ba hore se sebetsa hantle maemong a fapaneng 'me se khomarela ka katleho ho li-substrates tse fapaneng.
Kenyelletso ea ho Thickening Agents ka Likhomaretsi:
Li-thickening agents, tse tsejoang hape e le rheology modifiers kapa viscosity enhancers, ke lintho tse kenyellelitsoeng likhomaretsing ho eketsa viscosity kapa botenya ba tsona.Li etsa mesebetsi e mengata ea bohlokoa:
Taolo ea Viscosity: Liakhente tse teteaneng li laola litšobotsi tsa phallo ea likhomaretsi, li etsa hore ho be bonolo ho li sebelisa le ho thibela ho sisinyeha kapa ho matha kamora kopo.
Ho ntlafatsa ho khomarela: Ka ho eketsa viscosity, li-thiening agents li ka ntlafatsa kamano pakeng tsa sekhomaretsi le substrate, ho ntlafatsa thepa ea ho khomarela.
Ho Thibela ho Lula: Mahlahana ana a thusa ho thibela ho lokisoa ha lintho tse tiileng le ho netefatsa kabo e tšoanang ea likarolo ho pholletsa le sebopeho sa sekhomaretsi, ho matlafatsa botsitso le sethala sa bophelo.
Ntlafatso ea Ts'ebetso: Likhomaretsi tse teteaneng hangata li bonolo ho sebetsana le ho li laola nakong ea ts'ebeliso, li fana ka ts'ebetso e ntle ho basebelisi.
Mefuta ea li-agent tsa Thickening:
Lisebelisoa tse teteaneng tse sebelisoang ho li-adhesive li ka aroloa ka bongata ka mekhahlelo e mengata ho latela sebopeho sa bona sa lik'hemik'hale le mokhoa oa ts'ebetso:
Lipolima:
Li-Derivatives tsa Cellulose: Mehlala e kenyelletsa hydroxyethyl cellulose (HEC), methyl cellulose (MC), le carboxymethyl cellulose (CMC).Li-polymer tsena li qhibiliha ka metsing 'me li fana ka thepa e ntle ea ho teteana.
Acrylic Polymers: Li-acrylic thickeners, tse kang polyacrylates, li fana ka mefuta-futa le ho lumellana le mekhoa e fapaneng ea sekhomaretsi.
Polyurethanes: Li-thickeners tse thehiloeng ho polyurethane li fana ka matla a phahameng a ts'ebetso le taolo ea rheological ho li-adhesives tse thehiloeng ho solvent.
Li-Inorganic Thickeners:
Clays: Matsopa a tlhaho a kang bentonite le montmorillonite a atisa ho sebelisoa e le li-thickeners ho li-adhesives tse thehiloeng metsing.Li sebetsa ka ho etsa sebopeho sa marang-rang se eketsang viscosity.
Silika: Silika e nang le pula le silika ea colloidal li sebelisoa e le li-thickeners mefuteng ea sekhomaretsi, haholo-holo ka li-adhesives tse thehiloeng ho silicone.
Li-Thickeners tsa Organic:
Xanthan Gum: E tsoa ho fermentation ea likokoana-hloko, xanthan gum ke ntho e matla haholo e sebetsang hantle e loketseng mefuta e mengata ea metsoako ea sekhomaretsi.
Guar Gum: Ntho e 'ngoe e teteaneng ea tlhaho, guar gum, e nkiloe ho linaoa tsa guar' me e sebelisoa haholo-holo ho li-adhesives tse thehiloeng metsing.
Li-starch: Li-starch tse fetotsoeng, tse kang starch ea poone kapa starch ea litapole, li ka sebetsa e le li-thickeners tse sebetsang ka mokhoa o itseng oa ho khomarela.
Li-Asociative Thickeners:
Li-thickeners tsena li sebetsa ka ho theha maqhama le limolek'hule tse ling ka mokhoa oa ho khomarela, ho etsa marang-rang a eketsang viscosity.Mehlala e kenyelletsa li-polymers tsa hydrophobically modified (HMPs) le polyurethane thickeners tse nang le lihlopha tse kopanetsoeng.
Lintlha tse Susumetsang Khetho ea Li-agent tse Thickening:
Ho khetha sekhomaretsi se nepahetseng bakeng sa sebopeho se itseng sa sekhomaretsi ho kenyelletsa ho nahana ka lintlha tse fapaneng:
Ho lumellana: Thickener e tlameha ho lumellana le likarolo tse ling tsa motsoako oa sekhomaretsi, ho kenyelletsa le li-solvents, li-resin le li-additives.
Solubility: Ho itšetlehile ka mofuta oa sekhomaretsi (metsi a thehiloeng metsing, a thehiloeng ho solvent, kapa a chesang), motsoako o teteaneng o lokela ho qhibiliha kapa o qhalane ka har'a motsoako o khethiloeng kapa bohareng.
Rheological Properties: Boitšoaro bo lakatsehang ba rheological ea sekhomaretsi (ho kuta moriri, thixotropic, joalo-joalo) e tataisa khetho ea sekontiri le mahloriso a sona.
Mokhoa oa kopo: Mokhoa oa ho sebelisa (ho hlatsoa, ho fafatsa, joalo-joalo) le botenya ba kopo bo lakatsehang bo susumetsa khetho ea motenya le litšobotsi tsa eona tsa viscosity.
Melemo ea Tikoloho: Melao le menahano ea tikoloho e ka thibela ts'ebeliso ea lintho tse itseng tse teteaneng, joalo ka li-volatile organic compounds (VOCs) ho li-adhesives tse thehiloeng ho solvent.
Libaka tsa Kopo le Litlhokomelo:
Li-Thickening agents li fumana lits'ebetso ho pholletsa le liindasteri tse fapaneng le mefuta ea likhomaretsi:
Likhomaretsi tsa Kaho: Li-adhesives tse teteaneng li sebelisoa hangata ho lihokelo tsa kaho bakeng sa lisebelisoa tse tlamang joalo ka lehong, tšepe, konkreite le lirafshoa.Ba etsa bonnete ba hore ho tlatsoa lekhalo ka tsela e nepahetseng le bots'epehi ba sebopeho.
Li-Packaging Adhesives: Lits'ebetsong tsa ho paka, moo likhomaretsi li sebelisetsoang ho tiisa le ho kopanya khateboto, pampiri le lipolasetiki, li-adhesives tse teteaneng li fana ka taolo ea viscosity le ho thibela ho peperana nakong ea kopo.
Likhomaretsi tsa Likoloi: Likhomaretsi tsa likoloi li hloka taolo e nepahetseng ea rheological bakeng sa lits'ebetso tse joalo ka bonding ba 'mele, kopano ea ka hare ea trim, le ho kenya fenstere ea moea.
Likhomaretsi tsa Woodworking: Likhomaretsi tsa lehong le likhomaretsi tse sebelisoang ha ho etsoa mapolanka li rua molemo ho li-adhesives tse teteaneng ho fihlela maqhama a matla le ho thibela ho rotha kapa ho matha nakong ea kopo.
Likhomaretsi tsa Bongaka: Lits'ebetsong tsa bongaka tse kang ho roala maqeba, li-patches tsa transdermal, le li-adhesives tsa ho buoa, li-thickening agents li tiisa hore li khomarela hantle le ho lumellana le biocompatibility.
Li-thickening agents ke likarolo tsa bohlokoa tsa libopeho tsa sekhomaretsi, tse fanang ka taolo ea viscosity, botsitso, le ts'ebetso e ntlafalitsoeng lits'ebetsong tse fapaneng tse fapaneng.Ho khethoa ha motenya o nepahetseng ho itšetlehile ka lintlha tse kang ho lumellana, ho qhibiliha, thepa ea rheological, le litlhoko tsa kopo.Ka tsoelo-pele e tsoelang pele ea mahlale a thepa le theknoloji ea likhomaretsi, nts'etsopele ea li-agent tse matlafatsang tse ncha e ts'episa ho ntlafatsa ts'ebetso le ho feto-fetoha ha likhomaretsi liindastering tse fapaneng.Ha libopeho tsa sekhomaretsi li ntse li tsoela pele ho fetoha ho fihlela litlhoko tsa tlhahiso le kaho ea sejoale-joale, karolo ea li-ajenti tse teteaneng e ntse e le ea bohlokoa ho netefatsa katleho le ts'epahalo ea litharollo tsa sekhomaretsi.
Nako ea poso: Mar-29-2024