Hydroxyethylcellulose (HEC) isiri-ionic, inonyungudika nemvura polima inotorwa kubva muselulosi. Inowanzoshandiswa mumaindasitiri akasiyana akadai semishonga, zvizorwa, chikafu, uye zvigadzirwa zvekuchengeta munhu nekuda kwekukora, kudzikamisa, uye gelling zvivakwa.
Kemikari Kuumbwa kweHydroxyethylcellulose
HEC ndeye yakagadziridzwa cellulose polymer, uko hydroxyethyl mapoka anounzwa pane cellulose musana. Kugadziridzwa uku kunowedzera kunyungudika kwemvura uye zvimwe zvinhu zve cellulose. Mapoka ehydroxyethyl (-CH2CH2OH) akabatanidzwa zvakabatana kune hydroxyl (-OH) mapoka e cellulose molecule. Ichi chigadziriso chinoshandura chimiro chemuviri uye chemakemikari zvimiro zve cellulose, zvichiita kuti ive yakakodzera kune dzakasiyana siyana dzekushandisa.
Flammability Characteristics
1. Kupisa
Pure cellulose chinhu chinopisa nekuti chine hydroxyl mapoka, anogona kupfuta. Nekudaro, kuunzwa kwemapoka e-hydroxyethyl pane cellulose musana unoshandura maitiro ayo ekupisa. Kuvapo kwemapoka e-hydroxyethyl kunogona kukanganisa maitiro ekupisa kweHEC kana ichienzaniswa neselulosi isina kuchinjwa.
2. Flammability Testing
Kuedza kupisa kwakakosha kuti uone njodzi dzemoto dzine chekuita nechinhu. Yakasiyana-siyana yakamisikidzwa bvunzo, senge ASTM E84 (Yakajairwa Yekuyedza Nzira Yepamusoro Inopisa Hunhu hweZvivako zvekuvaka) uye UL 94 (Yakajairika Yekuchengetedza Kupisa kwePlastiki Zvishandiso zveZvikamu mumidziyo nemidziyo), inoshandiswa kuongorora kupisa kwezvinhu. Aya maedzo anoongorora maparamita senge kupararira kwemurazvo, kukura kweutsi, uye hunhu hwekubatidza.
Zvinhu Zvinokonzera Kupisa
1. Hunyoro Mukati
Kuvapo kwehunyoro kunogona kukanganisa kupisa kwezvinhu. Cellulosic zvinhu zvinoita kunge zvisingabatike kana zviine hunyoro hwepamusoro nekuda kwekupisa uye kutonhora kwemvura. Hydroxyethylcellulose, kuve-inonyungudika mumvura, inogona kunge iine huwandu hwakasiyana hwehunyoro zvichienderana nemamiriro ekunze.
2. Particle Kukura uye Density
Iyo particle size uye density yechinhu chinogona kukanganisa kupisa kwayo. Zvinhu zvakakamurwa zvakanaka kazhinji zvine nzvimbo yepamusoro, iyo inosimudzira kupisa nekukurumidza. Nekudaro, HEC inowanzo shandiswa muhupfu kana granulated fomu ine controlled particle sizes kusangana nezvinodiwa zvekushandisa.
3. Kuvapo kweZviwedzerwa
Mumashandisirwo anoshanda, hydroxyethylcellulose maumbirwo anogona kunge aine zvekuwedzera senge plasticizers, stabilizers, kana flame retardants. Izvi zvinowedzera zvinogona kuchinja maitiro ekupisa eHEC-based products. Semuenzaniso, zvinodzosa moto zvinogona kudzvanya kana kunonoka kubatidza uye kupararira kwemurazvo.
Njodzi dzeMoto uye Dziviriro Kufunga
1. Kuchengeta uye Kubata
Kuchengetedza kwakakodzera uye kubata maitiro kwakakosha kuderedza njodzi yezviitiko zvemoto. Hydroxyethylcellulose inofanira kuchengetwa munzvimbo yakaoma, inofefetera zvakanaka kure nezvinobvira zvinobatidza moto. Kuchengetedza kunofanira kutorwa kudzivirira kuratidzwa kupisa kwakanyanya kana zuva rakananga, izvo zvinogona kukonzera kuora kana kupisa.
2. Regulatory Compliance
Vagadziri uye vashandisi vezvigadzirwa zvine hydroxyethylcellulose vanofanirwa kutevedzera yakakodzera mitemo yekuchengetedza uye zviyero. Masangano anodzora akadai seOccupational Safety and Health Administration (OSHA) muUnited States neEuropean Chemicals Agency (ECHA) muEuropean Union anopa nhungamiro yekubata nekushandiswa kwakachengeteka kwemakemikari.
3. Moto Kudzvinyirira Matanho
Muchiitiko chemoto unosanganisira hydroxyethylcellulose kana zvigadzirwa zvine HEC, matanho akakodzera ekudzvinyirira moto anofanirwa kuitwa. Izvi zvingasanganisira kushandisa mvura, kabhoni dhaikisaidhi, zvekudzimisa makemikari akaoma, kana furo, zvichienderana nerudzi rwemoto uye nzvimbo yakapoteredza.
hydroxyethylcellulose imodified cellulose polymer inowanzoshandiswa mumaindasitiri akasiyana siyana pakukora uye kudzikamisa zvivakwa. Kunyange zvazvo cellulose yakachena ichibvira, kuiswa kwemapoka e-hydroxyethyl kunoshandura maitiro ekupisa kweHEC. Zvinhu zvakaita sehunyoro hwemukati, saizi yechikamu, density, uye kuvapo kwezvinowedzera zvinogona kukanganisa kupisa kwezvigadzirwa zvine hydroxyethylcellulose. Kuchengetedza kwakakodzera, kubata, uye kutevedzera mitemo yekuchengetedza zvakakosha kuderedza njodzi dzemoto dzine chekuita neHEC. Kuwedzera kutsvagisa uye kuyedzwa kungave kuri madikanwa kuti unzwisise zvizere maitiro ekupisa kwehydroxyethylcellulose pasi pemamiriro akasiyana uye magadzirirwo.
Nguva yekutumira: Kubvumbi-09-2024