Kuunganidza zvinopindwa zvinoshandiswa mune imwe shoma mujasi, asi dzinogona kuvandudza zvakanyanya mashandiro ematanho, uye ave chikamu chakakosha chejasi. Thickener erudzi rwekunyora kwetsika, izvo zvisingaregi kudzora kuunganidza uye kudzivirira kusekerera panguva yekuvaka, asi zvakare zvinoperekedza kuunganidza zvinhu zvakanakisa uye nekuchengetera zvinhu. Iyo yakakosha kirasi yekuzvipindwa nemvura-yakavakirwa pendi ine yakaderera viscosity.
1 Mhando dzeMvura-Yakavakirwa Pendi Thizizi
Parizvino, kune marudzi mazhinji evatambi anowanikwa mumusika, kunyanya kusanganisira inorganic thickeners, celluloses, polkacrylates uye kusonganirana polyurethane. Inorganic thickener rudzi rweGel mineral iyo inobata mvura uye inowedzera kuumba iyo thiskropy. Iko kune kunyanya Bentonite, Attapulgite, Aluminium Silte, etc., pakati peiyo Bentonite ndiyo inonyanya kushandiswa. Cellulossic thickens vane nhoroondo refu yekushandiswa uye kune marudzi mazhinji, kusanganisira methyl cellelose, hydroxyprosl methyl cellyl methelose, etc., iyo yaimbove iri huru yeiyo thickeners. Iyo inonyanya kushandiswa kweizvi ndeye hydroxyethyl cellulose. Polycrylate matsime anogona kukamurwa kuita marudzi maviri: Imwe ndeyekudzvinyirira mvura. Imwe yacho ndeye homopolymer kana coplymer emulsion thickener yeAcrylic acid naMethacrylic acid. Iri acidic roga roga, uye rinofanira kusimudzwa neAlkali kana ammonia mvura kusvika ph 8 ~ 9 kuzadzisa zvinokanganisa, anozivikanwa se acrylic acid alkali yekuzvimba zvakanyanya. Polyurethane Thickeyers ichangobva kugadzirwa-shamwaridzana mumakore apfuura.
2 maitiro ezvikamu zvakasiyana-siyana
2.1 Cellulose Thickener
Cellulossic thickeners ine yakakwira kuraswa, kunyanya kwekunyengedza kwechikamu chemvura; Ivo vane zvishoma zvinorambidzwa pamabatiro ekubatanidza uye anoshandiswa zvakanyanya; dzinogona kushandiswa mune dzakasiyana-siyana yePH. Nekudaro, pane zvakashata sekuremerwa kwakadai sekusanzwisisika, zvakanyanya kusimuka panguva ye roller coating, kusarongeka kugadzikana, uye kutapwa kusvibiswa kwemicrobial. Nekuti ine zvivharo zvakakwirira pasi pehomwe yepamusoro uye yakakwirira viscosity pasi pemitambo uye yakaderera shear Zvidzidzo zvakaratidza kuti semubatanidzwa wemubatanidzwa wemba anowedzera, kupururudza kwemapendi eLatex anowedzerawo. Cellucosic thickens inokonzeresa kupaza nekuda kwehama yavo yakakura yemulecular. Uye nekuti cellulose inonyanya hydrophilic, ichaderedza kudzikisira kwemvura yefirimu pendi.
2.2 acrylic thickener
Polwacrylic acid matiketi ane midziyo yakasimba uye yakasimba, uye yakagadzikana yakanaka yezvinhu, asi ine hanya naHH uye ine murombo wemvura kurwisa kwemvura.
2.3 Kubatana Polyurethane Thickener
Chimiro chekushamwaridzana cheSollative polyurethane Thickener zvinoparadzwa pasi pechiito cheShear, uye visikoka vanoderera. Kana iyo Simba Rokutsamwa rinonyangarika, iyo visikozi inogona kudzoreredzwa, iyo inogona kudzivirira chiitiko cheSag mune yekuvaka. Uye kupora kwaro kweViscosity kune imwe hysteresis, iyo inokodzera kusvika pakukwirisa kwefirimu rekuvhara. Huremu hwemanyorerwe. Polyurethane mamorekuru vane mapoka ehydrophilic uye hydrophobic mapoka, uye mapoka e hydrophobic ane hukama hwakasimba nemakiromita ekubatanidza, iyo inogona kusimudzira kudzikisira kwemvura yefirimu rekubatanidza. Sezvo zvimedu zvechishanu chinoshanda mumusangano, hakuzove nehurongwa, saka firimu rekuvandudza rinogona kuve rakanyorova uye riine gloss hombe. Zvakawanda Zvivakwa zvePolyurethane Thickeners zvakakwirira kune mamwe manhamba, izvo zvikamu zve micelle micelle Paunenge uchishandisa rudzi urwu rwekaviri, pesvedzero yezvakashata pane kuita kwakasiyana-siyana kunofanirwa kufungwa zvizere, uye emulsion, defoamer, inoparadzira rubatsiro, etc. inoshandiswa mukuvhara hazvifanirwe kutsiviwa zviri nyore.
2.4 Inorganic thickeners
Inorganic thickeners ine zvakanakira kurongeka kwakasimba, yakanaka, yakafara ph huwandu, uye kugadzikana kwakanaka. Nekudaro, sezvo Bentonite inzvimbo inormanic neakanaka mwenje wekunyora, inogona kuderedza zvakanyanya pasi peiyo floss yefirimu yekubatanidza uye kuita senge mumiririri wekutakura.
Kutumira Nguva: Dec-27-2022