Izixube zidlala indima ebalulekileyo ekuphuculeni ukusebenza kokwakha i-dry-mixed mortar. Oku kulandelayo kuhlalutya kwaye kuthelekise iimpawu ezisisiseko ze-latexr powder kunye ne-cellulose, kwaye kuhlalutya ukusebenza kweemveliso ze-dry-mixed mortar kusetyenziswa izixube.
Umgubo welatex ophinda unyibilike
Umgubo we-latexr ophinda ucocwe ucutshungulwa ngokutshiza nge-emulsion ekhethekileyo ye-polymer. Umgubo we-latexr owomileyo ngamasuntswana athile angqukuva angama-80 ~ 100mm aqokelelwe ndawonye. La masuntswana ayanyibilika emanzini kwaye enza ukusasazwa okuzinzileyo okukhulu kancinci kuneesuntswana ze-emulsion zokuqala, ezenza ifilimu emva kokuphelelwa ngamanzi kunye nokomiswa.
Amanyathelo ahlukeneyo okuguqula enza ukuba umgubo we-latex ophinda uqhekeke ube neepropati ezahlukeneyo ezifana nokumelana namanzi, ukumelana ne-alkali, ukumelana nemozulu kunye nokuguquguquka. Umgubo we-latexr osetyenziswa kwi-mortar unokuphucula ukumelana nempembelelo, ukuqina, ukumelana nokuguguleka, ukulula kokwakhiwa, amandla okubopha kunye nokudibana, ukumelana nemozulu, ukumelana nokuqandusela, ukungafuni manzi, amandla okugoba kunye namandla okuguquguquka kwe-mortar.
I-ether yeseli
I-Cellulose ether ligama eliqhelekileyo loluhlu lweemveliso eziveliswa yi-reaction ye-alkali cellulose kunye ne-etherifying agent phantsi kweemeko ezithile. I-alkali cellulose ithathelwa indawo zii-ethers ezahlukeneyo ze-ether ukuze kufunyanwe ii-ethers ezahlukeneyo ze-cellulose. Ngokweempawu ze-ionization zezinto ezithatha indawo, ii-ethers ze-cellulose zinokwahlulwa zibe ziindidi ezimbini: i-ionic (njenge-carboxymethyl cellulose) kunye ne-non-ionic (njenge-methyl cellulose). Ngokweentlobo ze-substituent, i-cellulose ether inokwahlulwa ibe yi-monoether (njenge-methyl cellulose) kunye ne-ether exutyiweyo (njenge-hydroxypropyl methyl cellulose). Ngokweendlela ezahlukeneyo zokunyibilika, inokwahlulwa ibe yi-water-soluble (njenge-hydroxyethyl cellulose) kunye ne-organic solvent-soluble (njenge-ethyl cellulose), njl. I-dry-mixed mortar yi-cellulose enyibilikayo emanzini ikakhulu, kwaye i-water-soluble cellulose yahlulwe ibe yi-instant type kunye ne-surface treated delayed dissolve type.
Indlela yokusebenza kwe-cellulose ether kwi-mortar yile ilandelayo:
(1) Emva kokuba i-cellulose ether kwi-mortar inyibilikisiwe emanzini, ukusasazwa okusebenzayo nokulinganayo kwezinto ezisimende kwinkqubo kuyaqinisekiswa ngenxa yomsebenzi womphezulu, kwaye i-cellulose ether, njenge-colloid ekhuselayo, "isonga" amasuntswana aqinileyo kwaye Umaleko wefilimu yokuthambisa uyenziwa kumphezulu wayo wangaphandle, okwenza inkqubo ye-mortar izinze ngakumbi, kwaye iphucula ukutyibilika kwe-mortar ngexesha lenkqubo yokuxuba kunye nokuthamba kolwakhiwo.
(2) Ngenxa yesakhiwo saso se-molecular, isisombululo se-cellulose ether senza amanzi akumotha angabi lula ukuwalahla, kwaye siyawakhupha kancinci kancinci ixesha elide, nto leyo enika umotha amandla okugcina amanzi kunye nokusebenza kakuhle.
ifayibha yomthi
I-fiber yomthi yenziwe ngezityalo njengezinto eziphambili kwaye icutshungulwa ngoluhlu lweetekhnoloji, kwaye ukusebenza kwayo kwahlukile kuleyo ye-cellulose ether. Iimpawu eziphambili zezi:
(1) Ayinyibiliki emanzini nakwizinyibilikisi, kwaye ayinyibiliki nakwizisombululo ze-asidi ebuthathaka kunye neziseko ezibuthathaka
(2) Xa isetyenziswa kwi-mortar, iya kudibana ibe yisakhiwo esinemilinganiselo emithathu kwimeko engaguqukiyo, yonyuse ukumelana kwe-thixotropy kunye nokuwa kwe-mortar, kwaye iphucule ukwakheka kwayo.
(3) Ngenxa yesakhiwo sefayibha yomthi esinobukhulu obuthathu, ineempawu "zokuvala amanzi" kwi-mortar exutyiweyo, kwaye amanzi kwi-mortar akayi kutsalwa okanye asuswe lula. Kodwa ayinayo i-cellulose ether yokugcina amanzi amaninzi.
(4) Isiphumo esihle se-capillary se-wood fiber sinomsebenzi "wokuhambisa amanzi" kwi-mortar, okwenza umphezulu kunye nomxholo wokufuma wangaphakathi kwi-mortar uhlale uhambelana, ngaloo ndlela kunciphisa iintanda ezibangelwa kukushwabana okungalinganiyo.
(5) Ifayibha yomthi inokunciphisa uxinzelelo lokuguqulwa kwesamente esiqinileyo kwaye inciphise ukushwabana nokuqhekeka kwesamente.
Ixesha lokuthumela: Matshi-10-2023