Umthelela we-latexr powder ne-cellulose ekusebenzeni kodaka oluxutshwe okomile

Ama-Admixtures adlala indima ebalulekile ekuthuthukiseni ukusebenza kokwakhiwa kodaka oluxutshwe okomile. Okulandelayo kuhlaziya futhi kuqhathanise izakhiwo eziyisisekelo ze-latexr powder ne-cellulose, futhi kuhlaziya ukusebenza kwemikhiqizo yodaka oluxutshwe okomile kusetshenziswa izixube.

Impushana ye-latex ehlakazeka kabusha

I-redispersible latexr powder icutshungulwa ngokumiswa kwesifutho se-emulsion ye-polymer ekhethekile. I-latexr powder eyomisiwe ezinye izinhlayiya eziyindilinga ezingama-80~100mm eziqoqwe ndawonye. Lezi zinhlayiya zincibilika emanzini futhi zakha ukuhlakazeka okuzinzile okukhulu kancane kunezinhlayiya ze-emulsion zangempela, ezakha ifilimu ngemva kokuphelelwa amandla kwamanzi nokomisa.

Izindlela ezihlukene zokuguqula zenza impushana ye-latex ehlakazeka kabusha ibe nezakhiwo ezihlukene njengokumelana namanzi, ukumelana ne-alkali, ukumelana nesimo sezulu kanye nokuguquguquka. I-latexr powder esetshenziselwa udaka ingathuthukisa ukumelana nomthelela, ukuqina, ukumelana nokugqoka, ukwakhiwa kalula, amandla okubopha nokuhlangana, ukumelana nesimo sezulu, ukumelana neqhwa, ukuxoshwa kwamanzi, amandla okugoba namandla okuguquguquka kodaka.

I-cellulose ether

I-Cellulose ether yitemu elivamile lochungechunge lwemikhiqizo ekhiqizwa ukusabela kwe-alkali cellulose kanye ne-etherifying agent ngaphansi kwezimo ezithile. I-alkali cellulose ithathelwa indawo ama-etherifying ahlukene ukuze kutholwe ama-cellulose ether ahlukene. Ngokwezakhiwo ze-ionization zama-substituents, ama-cellulose ether angahlukaniswa abe izigaba ezimbili: i-ionic (njenge-carboxymethyl cellulose) kanye ne-non-ionic (njenge-methyl cellulose). Ngokohlobo lwe-substituent, i-cellulose ether ingahlukaniswa ibe i-monoether (efana ne-methyl cellulose) ne-ether exutshiwe (njenge-hydroxypropyl methyl cellulose). Ngokuvumelana ne-solubility ehlukene, ingahlukaniswa ibe yi-soluble emanzini (njenge-hydroxyethyl cellulose) kanye ne-organic solvent-soluble (njenge-ethyl cellulose), njll. Udaka oluxutshwe okomile luyi-cellulose encibilika emanzini, futhi i-cellulose encibilika emanzini ihlukaniswa ngohlobo olusheshayo kanye nohlobo olulashwayo olulibazisekayo.

Indlela yokusebenza ye-cellulose ether odakeni imi kanje:

(1) Ngemuva kokuthi i-cellulose ether odakeni ichithekile emanzini, ukusatshalaliswa okusebenzayo nokufana okufanayo kwezinto zikasimende ohlelweni kuqinisekiswa ngenxa yomsebenzi ongaphezulu, futhi i-cellulose ether, njenge-colloid evikelayo, "igoqa" izinhlayiya eziqinile kanye nongqimba lwefilimu yokugcoba kwakheka endaweni yalo yangaphandle, okwenza uketshezi, uketshezi kanye nenqubo yokuxuba kuthuthukiswe. ubushelelezi bokwakha.

(2) Ngenxa yesakhiwo sawo samangqamuzana, isixazululo se-cellulose ether senza amanzi odaka angabi lula ukulahlekelwa, futhi kancane kancane siyawakhulula isikhathi eside, okwenza udaka lugcine amanzi kahle nokusebenza.

i-wood fiber

I-Wood fiber yenziwe ngezitshalo njengento eluhlaza eyinhloko futhi icutshungulwa uchungechunge lobuchwepheshe, futhi ukusebenza kwayo kuhlukile kulokho kwe-cellulose ether. Izici eziyinhloko yilezi:

(1) Ayincibiliki emanzini nasezincibilikisini, futhi ayincibiliki ku-asidi ebuthakathaka nasezixazululweni eziyisisekelo ezibuthakathaka

(2) Ifakwe odakeni, izodlulela esakhiweni esinezinhlangothi ezintathu esimweni esimile, ikhulise ukumelana ne-thixotropy kanye ne-sag yodaka, futhi ithuthukise ukwakheka.

(3) Ngenxa yokwakheka kwe-three-dimensional ye-wood fiber, inendawo "yokuvala amanzi" odakeni oluxubile, futhi amanzi odaka ngeke amunceke noma asuswe kalula. Kodwa ayinakho ukugcinwa kwamanzi okuphezulu kwe-cellulose ether.

(4) Umphumela omuhle we-capillary we-wood fiber unomsebenzi "wokuqhutshwa kwamanzi" odakeni, okwenza umswakama ongaphezulu kanye nomswakama wangaphakathi wodaka uvame ukuhambisana, ngaleyo ndlela unciphise imifantu ebangelwa ukuncipha kokungalingani.

(5) I-Wood fiber inganciphisa ukucindezeleka kwe-deformation yodaka oluqinile futhi inciphise ukuncipha nokuqhekeka kodaka.


Isikhathi sokuthumela: Mar-10-2023