I-cellulose ethers luhlobo lwekhompawundi ye-polymer eveliswa ngokuguqulwa kweekhemikhali zeselulosi yendalo. Zineempawu ezikhethekileyo zomzimba kunye neekhemikhali kwaye zisetyenziswa ngokubanzi kwizinto ezahlukeneyo zokuncamathelisa. Ngenxa yeepropathi ezigqwesileyo ze-cellulose ether, ukusetyenziswa kwayo kwi-adhesives ayiphuculi nje kuphela ukusebenza kwe-bonding yemveliso, kodwa kuzisa uthotho lophuculo olunjengozinzo, ukutyeba, ukugcinwa kwamanzi, kunye nokuthambisa.
1. Ukuqina kwesiphumo
Omnye weyona misebenzi iphambili ye-cellulose ethers kukutyeba, okubenza baxabiseke kakhulu kwiinkqubo zokuncamathelisa ezisekwe emanzini. I-viscosity ye-adhesive ibalulekile ekusebenzeni kwayo kwesicelo, kwaye i-cellulose ethers inokunyusa kakhulu i-viscosity ye-adhesive ngokwenza i-uniform ye-molecular network structure. I-cellulose ethers efana ne-hydroxypropyl methylcellulose (HPMC) kunye ne-hydroxyethyl cellulose (HEC) inemiphumo emihle yokuqina, kunye neempawu zabo zokuqina zinokulungelelaniswa notshintsho kwi-molecular weight, degree of substitution kunye nezinye izinto. Isincamathelisi esityebileyo asincedi kuphela ukugquma, kodwa sikwanyusa amandla okubopha, okwenza ukuba isetyenziswe ngokubanzi kwizinto zokuncamathelisa zokwakha, izinto zokuncamathelisa imveliso yephepha, njl.
2. Ukubonelela ngogcino lwamanzi
Ukugcinwa kwamanzi ngomnye umsebenzi obalulekileyo we-cellulose ethers kwi-adhesives. I-cellulose ethers ifaneleke ngokukodwa kwi-adhesives yamanzi, enokugcina ngokufanelekileyo umswakama kwaye ithintele i-colloid ukuba yome ngokukhawuleza. Oku kubaluleke kakhulu kwiindawo apho ukufuma kuphuphuma ngokukhawuleza. Ngokomzekelo, kwi-samente-based based okanye i-gypsum-based adhesives kwi-industry yezokwakha, i-cellulose ethers inokuthatha amanzi, yandise kwaye yenze ifilimu ye-hydration, ukwandisa ixesha lokusebenza lokunamathela kunye nokuqinisekisa ukhuseleko ngexesha lemisebenzi yokwakha. Iipropati ze-Bonding azithotywanga ngokomiswa kwangaphambi kwexesha. Olu phawu lukwasebenza kwiindawo ezifana nokupeyinta eludongeni kunye nokunamathiswa kweetayile ezifuna ukulawula ukukhuphuka kwamanzi.
3. Ukuphucula ukudibanisa kunye neempawu zokubambelela
Ukongezwa kwe-ether ye-cellulose ayikwazi nje ukujiya kunye nokugcina amanzi, kodwa kunye nokuphucula ngokufanelekileyo amandla okubambelela kwi-adhesive. Amaqela asebenzayo afana ne-hydroxyl kunye neebhondi ze-ether kwisakhiwo sayo se-molecular angenza iibhondi ze-hydrogen kunye nokunye ukusebenzisana komzimba kunye neekhemikhali kunye nomphezulu wokubambelela, ngaloo ndlela kuphuculwe ukunamathela kwe-adhesive. Oku kwenza i-cellulose ethers igqwesileyo kwi-bonding paper, imithi, i-ceramics kunye nezinye izinto. Ukuguquguquka kwee-ether ze-cellulose kunika i-adhesive engcono kunye nolwakhiwo olulula, oluvumela ukuba lusebenzise iimpawu ezibalaseleyo zokudibanisa kuluhlu olubanzi lwee-substrates.
4. Ukuphucula ukuzinza kunye nokumelana nokutyibilika
Kwiiglues zokwakha okanye ezinye izinto zokuncamathelisa i-viscosity ephezulu, i-cellulose ethers inokuphucula ukuchasana kwe-slip kwenkqubo. I-ether ye-cellulose inokwenza ulwakhiwo lwenethiwekhi kwi-binder, ukunciphisa umbane we-binder, ukwenzela ukuba i-coated binder igcine ifom ezinzileyo kwaye ayiyi kutyibilika ngenxa yobunzima okanye izinto zangaphandle, ngokukodwa Kubaluleke kakhulu kwiindawo zokwakha ezifana nokubeka i-tile. . Ukongeza, i-cellulose ether inokunika i-adhesive good anti-setting properties, igweme i-delamination ngexesha lokugcinwa kunye nokusetyenziswa, kunye nokuqinisekisa ukufana kunye nokusebenza kwexesha elide le-adhesive.
5. Ukuphucula ukusebenza kolwakhiwo
I-ether ye-cellulose ine-lubricity egqwesileyo kunye ne-dispersibility, ephucula kakhulu ukusebenza kwayo kwi-adhesives. I-Adhesives esebenzisa i-cellulose ether ayilula nje ukuyifaka, kodwa inokwenza i-adhesive layer egudileyo kunye nefanayo ngaphandle kokunyusa ubukhulu, ukunciphisa umtya ngexesha lokwakha kunye nokuphucula amava omsebenzisi. Ngelo xesha, ukusetyenziswa kwe-cellulose ether kunokunciphisa ngokufanelekileyo ukucutha kwe-adhesive, ukunciphisa iingxaki zokuqhawula okanye ukuxobula emva kokugubungela, kunye nokuphucula ukuzinza kunye nokuqina komgangatho wokudibanisa.
6. Yandisa ukuxhathisa kwimijikelo yokunyibilika komkhenkce
Kwezinye iimeko zesicelo esikhethekileyo, izinto zokuncamathelisa kufuneka zingene kwimijikelo emininzi yokunyibilikisa yokukhenkceza, njengolwakhiwo lwangaphandle, uthutho kunye namanye amasimi. I-ether ye-cellulose inokumelana ne-freeze-nyibiliki egqwesileyo, enokugcina ukuzinza kwe-adhesive phantsi kweemeko zokushisa eziphantsi kunye nokuthintela i-adhesive ekonakalisweni ngexesha lomjikelo wokuqhaqhazela. Ngokusebenzisa i-molecular structure ezinzileyo, i-cellulose ether inokugcina iimpawu zokubambelela kwi-adhesive naphezu kokutshintsha kweqondo lokushisa, iyenze ithembeke phantsi kweemeko zemozulu ezinzima. Oku kubaluleke kakhulu kwiinkqubo zokuncamathelisa ezifuna ukuvezwa kwangaphandle ixesha elide.
7. Ukubonelela ngokhuseleko lokusingqongileyo
Njengento ephuma kwi-cellulose yendalo, ii-cellulose ethers zinokonakala okugqwesileyo kwe-biodegradability kunye nokukhuselwa kwendalo. Ngokungafaniyo neepolymers zokwenziwa, ii-cellulose ethers zithathwe kwizixhobo ezivuselelekayo kwaye aziyi kubangela ungcoliseko olukhulu kwindalo emva kokusetyenziswa. Ukongezelela, i-cellulose ethers ine-emissions ephantsi ye-volatile organic compounds (VOC) ngexesha lokuvelisa kunye nokusetyenziswa, kwaye ihambelana neemfuno zemimiselo yendalo yendalo yanamhlanje. Ke ngoko, kuyilo lokuncamathelisa oluhambelana nokusingqongileyo, i-cellulose ethers ngokuthe ngcembe ibe zii-thickeners ezifanelekileyo kunye ne-adhesives. Binder imathiriyeli ekrwada.
8. Uluhlu olubanzi lwezicelo
Ngenxa yokuguquguquka kwazo, ii-cellulose ethers zidlala indima ephambili kwi-adhesive applications kumashishini amaninzi. Okokuqala, kwintsimi yolwakhiwo, i-cellulose ethers isetyenziswa ngokubanzi kwi-samente-based based adhesives kunye ne-gypsum-based adhesives ukubonelela ngokusebenza okugqwesileyo kokwakhiwa kunye namandla okudibanisa. Ukongezelela, i-cellulose ethers nayo isetyenziselwa ukupakisha kunye neeglues zemveliso yephepha. Ukugcinwa kwamanzi abo kunye neempawu zokuqina ngokufanelekileyo ziphucula umphumo wokubambisana kunye nokuqina kwephepha. I-cellulose ethers nayo isetyenziselwa iglue yonyango, iglue yokutya kunye nezinye iindawo. Ngenxa yezakhiwo zabo ezingenayo ityhefu, ezingenavumba kwaye zizinzile, zihlangabezana neemfuno eziqinileyo zokuncamathela kule mihlaba.
Njengesixhobo se-polymer esebenzayo, i-cellulose ether inethuba elibanzi lokusetyenziswa kwi-adhesives. Iphucula kakhulu ukusebenza kwe-adhesives kwaye ihlangabezana nemfuno ye-adhesives esemgangathweni ophezulu kumashishini anamhlanje kunye neendawo zokwakha ngokusebenzisa uluhlu lwemisebenzi efana nokutyeba, ukugcinwa kwamanzi, ukuphucula ukubambelela, ukuqinisa ukuzinza, kunye nokuphucula ukusebenza. Ngenkqubela phambili eqhubekayo yesayensi kunye nobuchwepheshe kunye neemfuno ezikhulayo zabantu zokukhusela indalo, indima ye-cellulose ethers kwi-adhesives iya kuba yinto ebaluleke ngakumbi nangakumbi, kwaye ithemba lesicelo elizayo liya kuba libanzi.
Ixesha lokuposa: Sep-24-2024