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 phofo ea latex le selulose, 'me e hlahloba ts'ebetso ea lihlahisoa tsa seretse tse omeletseng tse sebelisang li-admixtures.
Phofo ea latex e ka qhaloang hape
Phofo ea latex e ka qhaloang hapee sebetsoa ka ho omisoa ka ho fafatsa ka emulsion e khethehileng ea polymer. Phofo e omisitsoeng ea latex 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. phofo ea latex e sebelisoang ka seretse e ka ntlafatsa ho hanyetsa tšusumetso, ho tšoarella, ho hanyetsa ho apara, boiketlo ba ho haha, matla a tlamahano le momahano, ho hanyetsa boemo ba leholimo, ho hanyetsa leqhoa, ho leleka metsi, matla a ho kobeha 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-qhibilihang (joaloka hydroxyethyl selulose) le manyolo solvent-soluble (joaloka ethyl cellulose), joalo-joalo Dry-mixed seretse haholo-holo selulose metsi-qhibilihang, 'me selulose e qhibilihang ka metsing e arotsoe ka mofuta oa hang-hang le holim'a metsi a tšoaroang a lieha ho qhibiliha.
Mokhoa oa ts'ebetso ea cellulose ether ka seretse ke ka tsela e latelang:
(1) Ka mor'acellulose etherka seretse se qhibiliha ka metsing, kabo e sebetsang le e ts'oanang ea lisebelisoa tsa cementitious tsamaisong e tiisetsoa ka lebaka la ts'ebetso ea holim'a metsi, 'me cellulose ether, e le colloid e sireletsang, "e phuthela" likaroloana tse tiileng le ho thehoa ha filimi ea lubricating holim'a eona e ka ntle, e etsang hore tsamaiso ea seretse e be e tsitsitseng haholoanyane, hape e ntlafatsa ts'ebetso ea mokelikeli nakong ea ho hahoa ha metsi.
(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: Apr-25-2024