Nyika yezvinonamira inonakidza, izere nezvakawanda zvezvinhu, magadzirirwo, uye mashandisirwo.Pakati pezvakawanda zvinoumba maumbirwo ekunamatira, thickening agents vanoita basa rakakosha.Aya maajenti ane basa rekupa viscosity uye kugadzikana kune inonamira, kuve nechokwadi kuti inoita zvakanaka mumamiriro akasiyana uye inonamatira zvinobudirira kune akasiyana substrates.
Nhanganyaya kune Thickening Agents mune Adhesives:
Makobvu maajenti, anonziwo rheology modifiers kana viscosity enhancers, zvinhu zvinowedzerwa kune zvinonamira kuwedzera viscosity yavo kana ukobvu.Ivo vanoshanda akati wandei akakosha mabasa:
Viscosity Kudzora: Makumbo maajenti anodzora kuyerera kwezvinonamira, zvichiita kuti zvive nyore kuisa uye kudzivirira kudonha kana kumhanya mushure mekushandisa.
Kuvandudza Adhesion: Nekuwedzera viscosity, thickening agents anogona kusimudzira kusangana pakati pekunamatira uye substrate, kuvandudza adhesion zvivakwa.
Kudzivirira Kugadzika: Aya maajenti anobatsira kudzivirira kugadzika kwezvakaoma uye kuve nechokwadi chekugovera yunifomu yezvikamu mukati mekugadzirisa kwekunamatira, kusimbisa kugadzikana uye pasherufu-hupenyu.
Kuvandudza Kushanda Kwekushanda: Zvinamira zvakakoshwa zvinowanzo kuve nyore kubata uye kushandura panguva yekushandisa, zvichipa kushanda kuri nani kune vashandisi.
Mhando dzeThickening Agents:
Makumbo anoshandiswa mukunamira anogona kuve akaiswa muzvikamu zvakati wandei zvichienderana nekuumbwa kwavo kwemakemikari uye maitiro ekuita:
Polymers:
Cellulose Derivatives: Mienzaniso inosanganisira hydroxyethyl cellulose (HEC), methyl cellulose (MC), uye carboxymethyl cellulose (CMC).Aya mapolymer anonyungudika mumvura uye anopa zvakanakisa kukora zvivakwa.
Acrylic Polymers: Acrylic thickeners, senge polyacrylates, inopa kuita kwakasiyana-siyana uye kuenderana neakasiyana anonamira maumbirwo.
Polyurethanes: Polyurethane-based thickeners inopa yakakwirira-performance thickening uye rheological control mune solvent-based adhesives.
Inorganic Thickeners:
Clays: Ivhu remusikirwo senge bentonite uye montmorillonite rinowanzo shandiswa semakobvu mune zvinonamirwa nemvura.Vanoshanda nekugadzira network network inowedzera viscosity.
Silika: Precipitated silica uye colloidal silica zvinoshandiswa sezvikobvu mukunamira maumbirwo, kunyanya mune silicone-based adhesives.
Organic Thickeners:
Xanthan Gum: Yakatorwa kubva kune microbial fermentation, xanthan chingamu inonyatso nyatsoita gobvu mumiriri wakakodzera kwakasiyana siyana yekunamira maumbirwo.
Guar Gum: Imwezve yakasikwa thickener, guar gum, inotorwa kubva kuguar bhinzi uye inoshandiswa zvakanyanya mumvura-based adhesives.
Starches: Yakagadziridzwa masitachi, senge chibage starch kana mbatatisi starch, anogona kuita seanoshanda makobvu mune mamwe anonamira maumbirwo.
Associative Thickeners:
Aya makobvu anoshanda nekugadzira hukama nemamwe mamorekuru mune inonamira kugadzirwa, kugadzira network inowedzera viscosity.Mienzaniso inosanganisira hydrophobically modified polymers (HMPs) uye polyurethane thickeners ane asociative mapoka.
Zvinhu Zvinokonzera Kusarudzwa Kwemaajenti Anokora:
Kusarudza iyo yakaringana yekukora mumiriri kune imwe adhesive maumbirwo kunosanganisira kufunga zvakasiyana siyana:
Kugarisana: Iyo thickener inofanirwa kuenderana nezvimwe zvikamu zvekunamira kuumbwa, zvinosanganisira zvinonyungudutsa, resins, uye zvinowedzera.
Solubility: Zvichienderana nemhando yeadhesive (mvura-based, solvent-based, kana inopisa kunyunguduka), iyo thickening agent inofanira kunyungudika kana kuparara mune yakasarudzwa solvent kana yepakati.
Rheological Properties: Iyo inodiwa rheological maitiro eanonamira (shear kuonda, thixotropic, nezvimwewo) inotungamira kusarudzwa kweiyo thickening agent uye kusungirirwa kwayo.
Maitiro Okushandisa: Nzira yekushandisa (kubhurasha, kupfapfaidza, zvichingodaro) uye ukobvu hwekushandisa hunodiwa hunokanganisa sarudzo yehupfu uye hunhu hwayo hwe viscosity.
Mafungiro Ezvakatipoteredza: Mitemo yezvakatipoteredza uye kufunga zvinogona kurambidza kushandiswa kwemamwe maajenti ekukora, senge volatile organic compounds (VOCs) mune zvinonyungudutsa-based adhesives.
Nzvimbo dzekushandisa uye Zvinotarisirwa:
Thickening agents vanowana zvikumbiro mumaindasitiri akasiyana siyana nemhando dzekunamatira:
Zvokunamira Zvokuvaka: Zvishongo zvinonamira zvinowanzoshandiswa mukuvaka zvinonamira zvekubatanidza zvinhu zvakaita sehuni, simbi, kongiri, uye ceramics.Vanovimbisa kuzadza gaka rakakodzera uye kuvimbika kwechimiro.
Packaging Adhesives: Mukurongedza maapplication, uko zvinonamira zvinoshandiswa kuvharisa nekubatanidza makadhibhodi, pepa, uye mapurasitiki, thickening agents anopa viscosity control uye kudzivirira kusvinwa-kunze panguva yekushandisa.
Zvinamira zveMotokari: Zvekunamira zveMotokari zvinoda kunyatso kudzora rheological yezvishandiso senge body panel bonding, yemukati trim musangano, uye kuisirwa windshield.
Woodworking Adhesives: Woodworking glues uye adhesives anoshandiswa mukugadzira huni zvinobatsira kubva kune thickening agents kuti awane mabhondi akasimba uye kudzivirira kudonha kana kumhanya panguva yekushandiswa.
Medical Adhesives: Muzvishandiso zvekurapa senge maronda ekupfeka, transdermal zvigamba, uye zvekuvhiya zvinonamira, thickening agents vanovimbisa kunamatira kwakakodzera uye biocompatibility.
Makobvu maajenti zvinhu zvakakosha zvekunamira maumbirwo, zvinopa viscosity control, kugadzikana, uye kukwidziridzwa mashandiro pane akasiyana siyana ekushandisa.Kusarudzwa kweiyo gobvu chaiyo kunoenderana nezvinhu zvakaita sekuenderana, solubility, rheological properties, uye zvinodiwa zvekushandisa.Nekuenderera mberi nekuenderera mberi kwesainzi yezvigadzirwa uye tekinoroji yekunamira, kuvandudzwa kwemanovel thickening agents anovimbisa kuwedzera mashandiro uye kuita zvakasiyana-siyana zvekunamira mumaindasitiri akasiyana.Sezvo maumbirwo ekunamira achiramba achishanduka kuti asangane nezvinodiwa zvekugadzira nekuvaka zvemazuva ano, basa remaamendi ekukora rinoramba rakakosha mukuona budiriro uye kuvimbika kweadhesive bonding mhinduro.
Nguva yekutumira: Mar-29-2024