Hydroxyethylcellulose (HEC) ke polima e sa ionic, e qhibilihang ka metsing e tsoang ho selulose. E sebelisoa hangata liindastering tse fapaneng tse kang tsa meriana, litlolo, lijo, le lihlahisoa tsa tlhokomelo ea motho ka lebaka la ho teteana ha eona, ho tsitsisa le thepa ea gelling.
Sebopeho sa lik'hemik'hale tsa Hydroxyethylcellulose
HEC ke polymer e fetotsoeng ea cellulose, moo lihlopha tsa hydroxyethyl li hlahisoang mokokotlong oa cellulose. Phetoho ena e ntlafatsa ho qhibiliha ha metsi le lisebelisoa tse ling tsa cellulose. Lihlopha tsa hydroxyethyl (-CH2CH2OH) li hokahane ka kopanelo ho lihlopha tsa hydroxyl (-OH) tsa molek'hule ea cellulose. Phetoho ena e fetola thepa ea 'mele le ea lik'hemik'hale ea cellulose, e etsa hore e tšoanelehe bakeng sa mefuta e mengata ea likopo.
Likarolo tsa ho chesa
1. Ho cha
Selulose e hloekileng ke thepa e tukang hobane e na le lihlopha tsa hydroxyl, tse ka kenang mollong. Leha ho le joalo, ho kenngoa ha lihlopha tsa hydroxyethyl mokokotlong oa cellulose ho fetola litšobotsi tsa eona tsa ho tuka. Ho ba teng ha lihlopha tsa hydroxyethyl ho ka ama boitšoaro ba ho tuka ha HEC ha bo bapisoa le selulose e sa fetotsoeng.
2. Flammability Testing
Teko ea ho chesa ke ea bohlokoa ho fumana likotsi tsa mollo tse amanang le thepa. Liteko tse fapaneng tse emeng, joalo ka ASTM E84 (Mokhoa o Tloaelehileng oa Teko oa Litšobotsi tsa ho Chesa Bokaholimo ba Lisebelisuoa tsa Moaho) le UL 94 (E Tloaelehileng bakeng sa Tšireletseho ea ho Chesa ha Lintho tsa Plastiki bakeng sa Likarolo tsa Lisebelisoa le Lisebelisoa), li sebelisoa ho lekola ho chesa ha thepa. Liteko tsena li lekola likarolo tse kang ho ata ha lelakabe, nts'etsopele ea mosi, le litšobotsi tsa ho tima.
Lintlha Tse Amang ho Chesa
1. Mongobo
Ho ba teng ha mongobo ho ka susumetsa ho chesa ha thepa. Lisebelisoa tsa cellulosic ha li che ha li na le mongobo o phahameng ka lebaka la ho monya mocheso le ho pholisa ha metsi. Hydroxyethyl cellulose, kaha e qhibiliha ka metsing, e ka ba le mefuta e fapaneng ea mongobo ho latela maemo a tikoloho.
2. Particle Size le Density
Bongata ba phatsa le boima ba thepa bo ka ama ho cha ha eona. Lisebelisoa tse arohaneng hantle ka kakaretso li na le sebaka se phahameng, se khothalletsang ho tuka ka potlako. Leha ho le joalo, HEC e atisa ho sebelisoa ka foromo e phofshoana kapa e nang le granulated e nang le boholo ba likaroloana tse laoloang ho finyella litlhoko tse khethehileng tsa kopo.
3. Ho ba teng ha Li-additives
Lits'ebetsong tse sebetsang, hydroxyethylcellulose formulations e kanna ea ba le li-additives tse kang plasticizers, stabilizers, kapa flame retardants. Li-additives tsena li ka fetola litšobotsi tse tukang tsa lihlahisoa tse thehiloeng ho HEC. Ka mohlala, li-retardants tsa malakabe li ka thibela kapa tsa liehisa ho tuka le ho ata ha malakabe.
Likotsi Tsa Mollo le Menahano ea Tšireletseho
1. Ho boloka le ho Tšoara
Mekhoa e nepahetseng ea ho boloka le ho sebetsana le eona e bohlokoa ho fokotsa kotsi ea liketsahalo tsa mollo. Hydroxyethyl cellulose e lokela ho bolokoa sebakeng se omeletseng, se nang le moea o motle hole le mehloli e ka bang teng ea ho hotetsa. Tlhokomelo e lokela ho nkoa ho thibela ho pepesehela mocheso o feteletseng kapa mahlaseli a letsatsi a tobileng, a ka lebisang ho bola kapa ho tuka.
2. Tumellano ea Taolo
Baetsi le basebelisi ba lihlahisoa tse nang le hydroxyethylcellulose ba tlameha ho latela melao le litekanyetso tse nepahetseng tsa polokeho. Mekhatlo e laolang e kang Occupational Safety and Health Administration (OSHA) United States le European Chemicals Agency (ECHA) e European Union e fana ka litataiso bakeng sa ho tšoara le ho sebelisa lik'hemik'hale ka mokhoa o sireletsehileng.
3. Mehato ea Khatello ea Mollo
Tabeng ea mollo o kenyelletsang hydroxyethylcellulose kapa lihlahisoa tse nang le HEC, mehato e loketseng ea ho thibela mollo e lokela ho sebelisoa. Sena se ka ’na sa akarelletsa ho sebelisa metsi, carbon dioxide, litima-mollo tsa lik’hemik’hale tse omeletseng, kapa foam, ho itšetlehile ka sebōpeho sa mollo le tikoloho e potolohileng.
hydroxyethylcellulose ke polymer e fetotsoeng ea cellulose e sebelisoang hangata liindastering tse fapaneng bakeng sa thepa ea eona ea ho tenya le ho tsitsisa. Le hoja selulose e hloekileng e ka tuka, ho kenngoa ha lihlopha tsa hydroxyethyl ho fetola litšobotsi tse tukang tsa HEC. Lintho tse kang mongobo, boholo ba likaroloana, boima ba 'mele, le boteng ba li-additives li ka susumetsa ho chesa ha lihlahisoa tse nang le hydroxyethylcellulose. Ho boloka hantle, ho tšoara, le ho khomarela melao ea tšireletso ke tsa bohlokoa ho fokotsa likotsi tsa mollo tse amanang le HEC. Lipatlisiso le liteko tse ling li ka 'na tsa hlokahala ho utloisisa ka botlalo boitšoaro ba ho chesa ha hydroxyethylcellulose tlas'a maemo le libopeho tse fapaneng.
Nako ea poso: Apr-09-2024