Indasteri ea kaho ea lefats'e e ntse e fetoha ka potlako, e susumetsoang ke litlhoko tse ntseng li eketseha tsathepa e sebetsang hantle, mekhoa e potlakileng ea kaho, botsitso bo ntlafetseng, le bokhoni bo ntlafalitsoeng ba ho sebetsaHar'a thepa ea sejoale-joale ea kaho,lithako tse entsoeng ka gypsumli se li le bohlokoa haholo ka lebaka la litšobotsi tsa tsona tse bobebe, ho hanyetsa mollo, qetello e boreleli, le bonolo ba ho li sebelisa.
Ha mmaraka oa li-plaster tsa gypsum, metsoako e kopaneng, litsamaiso tsa ho ikamahanya le maemo le li-mortar tse khabisitsoeng o ntse o hola, bahlahisi ba shebane le ho ntlafatsa mekhoa ka li-additives tse tsoetseng pele. Har'a li-additives tsena,ether ea starche hlahile e le karolo ea bohlokoa ka lebaka la thepa ea eona e ikhethang ea rheological le taolo ea metsi.
Ha e kopantsoe le li-ether tsa cellulose tse kang HPMCleMHEC, starch ether e hlahisa ntho e ikhethangliphello tsa tšebelisano-'moho, e ntlafatsang haholo tshebetso ya di-mortar tse thehilweng ho gypsum.
Sengoloa sena se hlahloba k'hemistri, mekhoa, lits'ebetso le litebello tsa bokamoso tsa ether ea starch lits'ebetsong tsa seretse se thehiloeng ho gypsum.
1. Ho Utloisisa Li-mortar tse Thehiloeng ho Gypsum
Li-mortar tse entsoeng ka gypsum ke thepa ea kaho e kopantsoeng ka omileng e entsoeng haholo-holo ka:
- Calcium sulfate hemihydrate
- Li-filler
- Lihlopha tse bobebe
- Lisebelisoa tse sebetsang
Li-mortar tsena li sebelisoa haholo ho:
- Ho plaster maboteng ka hare
- Qetello ea mekhabiso
- Ho tlatsa manonyeletso
- Fatše e ikamahanyang le maemo
- Mekhoa ea ho lokisa
Melemo ea Bohlokoa
- E bobebe
- Setaele se potlakileng
- Qetello e boreleli ea bokaholimo
- Khanyetso ea mollo
- Ho fokotseha ho tlase
Leha ho le jwalo, di-mortar tsa gypsum le tsona di hlahisa diphephetso tsa ho etsa:
- Nako e lekanyelitsoeng ea ho bula
- Kutloelo-bohloko ea metsi
- Likotsi tsa ho oa
- Tshebetso e mpe ea ho thibela ho thella
- Mathata a taolo ea bokhoni ba ho sebetsa
Mona ke moo starch ether e bang ea bohlokoa.
2. Ether ea Starch ke Eng?
Starch ether ke motsoako oa starch o fetotsoeng ka lik'hemik'hale o hlahisoang ka ho fetola mehlodi ea tlhaho ea starch joalo ka:
- Setache sa poone
- Setache sa litapole
- Setache sa Tapioca
Phetoho ena e hlahisa lihlopha tsa ether tse ntlafatsang:
- Ho qhibiliha ha metsi
- Botsitso
- Tshebetso ea ho teteana
- Ho tsamaellana le litsamaiso tsa diminerale
Starch ether e tsebahala haholo e lemohlophisi oa rheologye etselitsoeng ka ho khetheha litsamaiso tsa seretse se kopantsoeng ka ommeng.
3. Hobaneng Ether ea Starch e le ea Bohlokoa Li-mortar tsa Gypsum
Ho fapana le di-ether tsa cellulose, tse shebaneng haholo le ho boloka metsi, ether ya starch e fana ka melemo e ikgethang ya tshebetso.
Menehelo ea eona e meholo e kenyelletsa:
- Tshebetso e khahlanong le ho oa
- Ho tsitsa ho ntlafetseng
- Boitšoaro bo ntlafetseng ba ho thibela ho thella
- Taolo e betere ea ts'ebeliso
- Phetoho ea rheology ea synergistic
4. Khopolo ea Litlamorao tsa Kopano
Kotaraphello ea tšebelisano-'mohoe bolela tshebetso e kopaneng e fetang kakaretso ya menehelo ya motho ka mong.
Ka har'a lithako tsa gypsum:
Cellulose Ether e Fana ka
- Ho boloka metsi
- Katoloso ea nako e bulehileng
- Sebopeho sa filimi
Ether ea Starch e Fana ka
- Ho teteana ha sebopeho
- Taolo e khahlanong le ho oa
- thixotropy e ntlafalitsoeng
Ha li sebelisoa hammoho, li hlahisa mekhoa e ntlafalitsoeng.
5. Rheology e Ntlafetseng le Bokhoni ba ho Sebetsa
E 'ngoe ea melemo ea bohlokoa ka ho fetisisa ea tšebelisano-'moho kentlafatso ea rheology.
Ntle le Starch Ether
Li-mortar tsa gypsum li ka ba:
- Metsi haholo
- Ho thata ho laola
- E sekametse ho thella
Ka Ether ea Starch
Seretse sea atleha:
- Ho teteana ho hoholo ha sebopeho
- Ho boloka sebopeho hamolemo
- Ho ata ho ntlafetseng
Sena se nolofalletsa ho sebelisoa habonolo holim'a libaka tse otlolohileng.
6. Ntlafatso ea Tshebetso e Khahlanong le ho Sag
Ho hanyetsa ho sag ho bohlokoa haholo ho plaster ea gypsum.
Ntle le taolo e lekaneng ea ho thibela ho oa:
- Thepa e thella tlase
- Botenya bo fetoha bo sa tsitsang
- Liphoso tsa bokaholimo lia hlaha
Ether ea starch e ntlafatsa haholo boits'oaro bo khahlanong le ho fela ha matla ka ho eketsa khatello ea chai.
Ha e kopantsoe le ether ea cellulose, sena se hlahisa botsitso bo phahameng.
7. Tšebelisano-'moho ea ho Boloka Metsi
Leha starch ether ka boeona e fana ka ho boloka metsi ka tekanyo e itekanetseng, tšebelisano ea eona le cellulose ether e ntlafatsa taolo eohle ea metsi.
Melemo e kenyelletsa:
- Metsi a mangata
- Ho fokotseha ha ho oma pele ho nako
- Ntlafatso e betere ea matla
Sena se bohlokoa haholo ho:
- Maemo a leholimo a chesang
- Li-substrate tse nang le masoba
- Lisebelisoa tse tšesaane
8. Boleng bo Ntlafetseng ba Sebaka
Qetello ea bokaholimo e bohlokoa haholo ho li-motartara tsa gypsum.
Starch ether e tlatsetsa ho:
- Libaka tse boreleli
- Ho fokotseha ha ho petsoha
- Ho batalatsa ho ntlafetseng
Ha e kopantsoe le ether ea cellulose, sephetho ke botle bo botle bo phahameng.
9. Ntlafatso ea Nako e Bulehileng
Nako ea ho buloa e bolela nako e sebetsang ka mor'a ho kopanya.
Ether ea starch e thusa ho tsitsisa botsitso nakong ena.
Melemo:
- Ho tenyetseha haholoanyane ha kopo
- Litšila tse fokotsehileng
- Bokgoni bo betere ba kaho
10. Khomarelo e Ntlafalitsoeng
Sistimi ea tšebelisano-'moho e ntlafatsa kamano ka ho ntlafatsa:
- Boitšoaro ba ho kolobisa
- Ho kopana pakeng tsa seretse le substrate
- Matla a kutlwano
Sena se ntlafatsa ts'epo lits'ebetsong tsa lebota.
11. Khanyetso ea Mapetso le ho Tšoarella
Hangata ho phatloha ha microcracking ho bakoa ke:
- Tahlehelo e potlakileng ea metsi
- Sebaka se sa lekanang
- Khatello ea maikutlo ea ka hare
Motsoako oa ether ea starch ether-cellulose o fokotsa likotsi tsena.
Sephetho:
- Ho tšoarella ho ntlafetseng
- Tshebetso e betere ea nako e telele
12. Litšebeliso Mekhoeng e Fapaneng ea Gypsum
12.1 Liplaster tsa Gypsum
E ntlafatsa:
- Bokhoni ba ho sebetsa
- Khahlanong le ho oa
- Boreleli ba bokaholimo
12.2 Metswako e Kopantsoeng
Lintlafatso:
- Ho ata ha tsona
- Khanyetso ea mapetso
12.3 Mekhabiso ea Gypsum
E fana ka:
- Taolo ea sebopeho
- Ho nepahala ha kopo
12.4 Gypsum e Itekanetseng
E ntlafatsa:
- Tekanyo ea phallo
- Botsitso
13. Melemo ea Moruo
Ho sebelisa starch ether ho ntlafatsa katleho ka:
- Ho fokotsa litlhoko tsa tekanyo ea tlatsetso
- Ho fokotsa litšila
- Ho ntlafatsa tlhahiso
Sena se fokotsa litšenyehelo tsa tlhahiso ka kakaretso.
14. Melemo ea ho Tšoarella
Ether ea starch e fana ka melemo ea tikoloho:
- Mohloli oa thepa e tala e ka nchafatsoang
- E ka bola
- Tšusumetso e tlase ea khabone ho feta li-polymer tsa maiketsetso
Sena se tsamaisana le mekhoa ea kaho e tala.
15. Mehopolo ea ho Lokisa
Tšebeliso e atlehileng e itšetlehile ka:
Tekanyo
Mefuta e tloaelehileng:
0.02%–0.10%
Ho lumellana
E lokela ho leka-lekana le:
- Ether ea selulose
- Barekisi
- Li-filler
16. Liphephetso Ts'ebelisong
Liphephetso tse ka bang teng li kenyelletsa:
- Ho teteana ho feta tekano
- Phallo e fokotsehile haeba e fetile tekanyo e tloaelehileng
- Kutloisiso ea tšebelisano-'moho le limaraka tse ling tsa gypsum
Ho ntlafatsa mokhoa o nepahetseng oa ho etsa tlhahiso hoa hlokahala.
17. Mekhoa ea 'Maraka oa Lefatše
Tlhokeho ea starch ether e ntse e eketseha ka lebaka la:
- Mekhoa e ntseng e hola ea kaho ea gypsum
- Keketseho ea tlhahiso ea motsoako o omileng
- Tlhokeho ea thepa ea kaho e bobebe
18. Lintlafatso tsa Nakong e Tlang
Patlisiso e shebane le:
- Li-ether tsa starch tse sebetsang ka bongata
- Taolo ea metsi ka potlako
- Mekhoa e ntlafalitsoeng ea ho lumellana
19. Hobaneng ha Kopano e le ea Bohlokoa
Motsoako oa starch ether le cellulose ether o hlahisa:
- Rheology e betere
- Ho sebetsa hantle ho ntlafetseng
- E khahlanong le ho fela ha boleng bo holimo
- Ho tšoarella ho matlafetseng
Tšebelisano ena e hlalosa ts'ebetso ea seretse sa gypsum sa moloko o latelang.
Litlamorao tsa tšebelisano-'moho tsa ether ea starch ka har'a li-mortar tse thehiloeng ho gypsum li emela tsoelo-pele e kholo k'hemistri ea kaho.
Ka ho sebetsa mmoho le di-ether tsa cellulose, starch ether e fana ka:
- Ho sebetsa hantle ho ntlafetseng
- Ho tsitsa botsitso
- Tshebetso e betere khahlanong le ho salla morao
- Boleng bo holimo ba bokaholimo
- Ho tšoarella ho eketsehileng
Ha litsamaiso tsa kaho tse thehiloeng ho gypsum li ntse li tsoela pele ho atoloha lefatšeng ka bophara, starch ether e tla lula e le tlatsetso ea bohlokoa bakeng sa ho thehathepa ea kaho e sebetsang hantle, e tšoarellang, le e sebetsang hantle.
Nako ea poso: Mmesa-30-2026