Li-admixtures li phetha karolo ea bohlokoa ho ntlafatsa ts'ebetso ea ho haha seretse se omileng. Lintlha tse latelang li hlahloba le ho bapisa thepa ea motheo ea latexr powder le cellulose, le ho hlahloba ts'ebetso ea lihlahisoa tsa seretse tse omeletseng tse sebelisang li-admixtures.
Phofo ea latex e ka qhaloang hape
Redispersible latexr powder e sebetsoa ka ho omisoa ka spray ea emulsion e khethehileng ea polymer. Phofo e omisitsoeng ea latexr ke likaroloana tse chitja tsa 80 ~ 100mm tse bokaneng hammoho. Likaroloana tsena li qhibiliha ka metsing 'me li etsa phallo e tsitsitseng e nyenyane ho feta likaroloana tsa pele tsa emulsion, tse etsang filimi ka mor'a ho felloa ke metsi le ho omisa.
Mehato e fapaneng ea phetoho e etsa hore phofo ea latex e khonehe hape e be le thepa e fapaneng e kang ho hanyetsa metsi, ho hanyetsa alkali, ho hanyetsa boemo ba leholimo le ho fetoha ha maemo. latexr phofo e sebelisoang ka seretse se ka ntlafatsa ho hanyetsa tšusumetso, ho tšoarella, ho hanyetsa ho apara, boiketlo ba ho haha, matla a tlamahano le bonngoe, ho hanyetsa boemo ba leholimo, ho hanyetsa leqhoa, ho thibela metsi, matla a ho khumama le matla a flexural a seretse.
Cellulose ether
Cellulose ether ke lentsoe le akaretsang bakeng sa letoto la lihlahisoa tse hlahisoang ke karabelo ea alkali cellulose le etherifying agent tlasa maemo a itseng. Alkali cellulose e nkeloa sebaka ke lisebelisoa tse fapaneng tsa etherifying ho fumana li-ether tse fapaneng tsa cellulose. Ho latela thepa ea ionization ea li-substituent, cellulose ethers e ka aroloa ka mekhahlelo e 'meli: ionic (joalo ka carboxymethyl cellulose) le non-ionic (joalo ka methyl cellulose). Ho latela mofuta oa substituent, cellulose ether e ka aroloa ka monoether (joalo ka methyl cellulose) le ether e tsoakiloeng (joalo ka hydroxypropyl methyl cellulose). Ho ea ka solubility e fapaneng, e ka aroloa ka metsi a qhibilihang (joalo ka hydroxyethyl cellulose) le organic solvent-soluble (joalo ka ethyl cellulose), joalo-joalo. e arotsoe ka mofuta oa hang-hang le mofuta o tšoaroang ka holim'a nako e liehang ho qhibiliha.
Mokhoa oa ts'ebetso ea cellulose ether ka seretse ke ka tsela e latelang:
(1) Ka mor'a hore cellulose ether ka seretse e qhibilihe ka metsing, kabo e sebetsang le e ts'oanang ea thepa ea samente tsamaisong e tiisitsoe ka lebaka la mosebetsi oa holim'a metsi, 'me cellulose ether, e le colloid e sireletsang, "e phuthela" e tiileng. likaroloana le Lera la filimi e tlotsang e thehoa holim'a eona ka ntle, e leng se etsang hore tsamaiso ea seretse e be e tsitsitseng, hape e ntlafatsa ho phalla ha seretse nakong ea ho kopanya le boreledi ba kaho.
(2) Ka lebaka la sebopeho sa eona sa limolek'hule, tharollo ea cellulose ether e etsa hore metsi a seretse a se ke a lahleheloa ke bonolo, 'me butle-butle a e lokolla ka nako e telele, e leng se etsang hore seretse se boloke metsi hantle le ho sebetsa hantle.
fiber ea lehong
Wood fiber e entsoe ka limela e le eona ntho e ka sehloohong e tala 'me e sebetsoa ke letoto la theknoloji,' me tshebetso ea eona e fapane le ea cellulose ether. Thepa e kholo ke:
(1) Ha e kenelle ka metsing le ka lihlapolli, hape ha e qhibilihe ka har'a asiti e fokolang le litharollo tsa motheo tse fokolang
(2) E sebelisoa ka seretse, e tla kopana ka sebopeho sa mahlakore a mararo sebakeng se tsitsitseng, ho eketsa thixotropy le sag resistance ea seretse, le ho ntlafatsa ho hahoa.
(3) Ka lebaka la sebopeho sa mahlakore a mararo sa fiber ea lehong, e na le thepa ea "ho koala metsi" ka har'a seretse se tsoakiloeng, 'me metsi a seretse a ke ke a monngoa kapa a tlosoa habonolo. Empa ha e na ho boloka metsi a mangata a cellulose ether.
(4) Phello e ntle ea capillary ea fiber ea lehong e na le mosebetsi oa "conduction ea metsi" ka har'a seretse, e leng se etsang hore metsi a ka holimo le a ka hare a seretse a be a tsitsitseng, kahoo a fokotsa mapetsong a bakoang ke ho fokotseha ho sa tšoaneng.
(5) Fiber ea lehong e ka fokotsa khatello ea deformation ea seretse se thata le ho fokotsa ho fokotseha le ho phunyeha ha seretse.
Nako ea poso: Mar-10-2023