Intshayelelo
I-Cellulose ethers, ngakumbi i-Methyl Hydroxyethyl Cellulose (MHEC), isetyenziswa ngokubanzi kumashishini ahlukeneyo kwiipropati zabo eziphawulekayo. I-MHEC yi-derivative cellulose derivative ephucula ukusebenza kwe-adhesives kunye ne-sealants kakhulu. Le khompawundi inikeza uluhlu lweenzuzo, kubandakanywa i-viscosity ephuculweyo, ukugcinwa kwamanzi, ukusebenza, kunye nokuzinza. Ukuqonda iindlela ezithile apho i-MHEC iphucula i-adhesives kunye ne-sealants inokubonelela ngengqiqo ebalulekileyo kwizicelo zayo kunye neenzuzo kula mashishini.
Ukuphuculwa kweViscosity kunye neRheology
Enye yeendlela eziphambili ze-MHEC zokuphucula ukusebenza kwe-adhesives kunye ne-sealants yimpembelelo yayo kwi-viscosity kunye ne-rheology. Iimolekyuli ze-MHEC, xa zichithwa emanzini, zenza isisombululo esiphezulu. Oku kwanda kwe-viscosity kubalulekile kwi-adhesives kunye ne-sealants njengoko iqinisekisa isicelo esilawulwa ngakumbi, ukunciphisa ukuthambekela kwemveliso ukubaleka okanye i-sag. Le propati inenzuzo ngokukodwa kwizicelo ezithe nkqo apho ukugcina indawo yokubambelela okanye i-sealant ibalulekile.
Ukuziphatha kwe-rheological enikwe ngu-MHEC kunceda ekufezekiseni indalo ye-thixotropic kwi-adhesives kunye ne-sealants. Thixotropy ibhekisela kwipropati yeegels ezithile okanye ulwelo olungqingqwa (viscous) phantsi kweemeko ezimileyo kodwa zihamba (zibe zincinci) xa ziphazamisekile okanye zigxininisekile. Oku kuthetha ukuba i-adhesives kunye ne-sealants equkethe i-MHEC inokusetyenziswa ngokulula xa kuchetywa i-chear (umzekelo, ngexesha lokuxubha okanye ukuhluthwa) kodwa kuphinde kubuyiselwe i-viscosity yabo ngokukhawuleza emva kokuba kususwe amandla esicelo. Olu phawu lubalulekile ekuthinteleni ukudodobala kunye nokuthontsiza, ukuqinisekisa ukuba izinto zihlala endaweni yazo de zinyange.
Ukugcinwa kwaManzi okongeziweyo
I-MHEC iyaziwa ngamandla ayo okugcina amanzi. Kumxholo wokubambelela kunye ne-sealants, le propati ibaluleke kakhulu. Ugcino lwamanzi lubalulekile ekuqinisekiseni ukunyangwa ngokufanelekileyo kunye nokubekwa kwezi zixhobo. Umswakama owaneleyo uyimfuneko kwinkqubo ye-hydration kwi-adhesives-sement-adhesives, kunye nakwezinye iindidi zokubambelela, iqinisekisa ukuba i-adhesive ihlala isebenza ixesha elide ngaphambi kokumisela.
Ipropathi yokugcinwa kwamanzi ye-MHEC inceda ekugcineni i-adhesive's okanye i-sealant's hydration state, eyona nto ibalulekileyo ekufezekiseni amandla amakhulu ebhondi. Kwii-adhesives ezisekelwe kwi-cement, i-MHEC inqanda ukomisa kwangaphambi kwexesha, oku kunokukhokelela ekugqithiseni okungaphelelanga kunye nokunciphisa amandla. Kwii-sealants, ukugcina umswakama owaneleyo kuqinisekisa ukuthungwa okuhambelanayo kunye nokuguquguquka ngexesha lokufaka isicelo kunye nokunyanga.
Ukuphuculwa kokuSebenza kunye neePropati zeSicelo
Ukufakwa kwe-MHEC kwi-adhesives kunye ne-sealants kwandisa kakhulu ukusebenza kwabo kunye nokulula kwesicelo. Umphumo wokuthambisa we-MHEC uphucula ukusasazeka kwezi mveliso, okwenza kube lula ukuzisebenzisa ngezixhobo ezifana ne-trowels, iibrashi, okanye izitshizi. Le propati ibaluleke kakhulu kulwakhiwo kunye nezicelo ze-DIY apho ukusetyenziswa lula kunokuchaphazela kakhulu ukusebenza kunye nomgangatho womsebenzi.
Ukongezelela, i-MHEC inegalelo ekululameni kunye nokuhambelana kwe-adhesive okanye i-sealant. Oku kufana kuqinisekisa ukuba izinto eziphathekayo zingasetyenziswa kumgca omncinci, olinganayo, oyimfuneko ekufezekiseni ukudibanisa kunye nokutywinwa. Ukuphuculwa kokusebenza kwakhona kunciphisa inzame efunekayo ekufakeni isicelo, okwenza inkqubo ingabi nabasebenzi kakhulu kwaye isebenze ngakumbi.
Ukunyuswa kwexesha lokuVula kunye nexesha lokuSebenza
Enye inzuzo ebalulekileyo ye-MHEC kwi-adhesives kunye ne-sealants kukunyuka kwexesha elivulekileyo kunye nexesha lokusebenza. Ixesha elivulekileyo libhekisela kwixesha apho i-adhesive ihlala i-tacky kwaye inokwenza ibhondi kunye ne-substrate, ngelixa ixesha lomsebenzi libude bexesha apho i-adhesive okanye i-sealant ingasetyenziswa okanye ilungiswe emva kokusetyenziswa.
Ikhono le-MHEC lokugcina amanzi kunye nokugcina i-viscosity inceda ekwandiseni la maxesha, ukubonelela abasebenzisi ngokuguquguquka ngakumbi ngexesha lokufaka isicelo. Eli xesha livulekileyo landisiweyo liluncedo kakhulu kwiiprojekthi ezinzima apho ukubekwa okuchanekileyo kunye nohlengahlengiso luyimfuneko. Kwakhona kunciphisa umngcipheko wokumiselwa kwangaphambili, okunokuthi kuphazamise umgangatho webhondi.
UkuPhuculwa kokuBambana kunye nokuBambana
I-MHEC iphucula zombini i-adhesion kunye ne-cohesion properties of adhesives and sealants. Ukubambelela kubhekisela kwikhono lezinto zokunamathela kwi-substrate, ngelixa ukudibanisa kubhekisela kumandla angaphakathi ezinto ngokwazo. Ukugcinwa kwamanzi okuphuculweyo kunye neempawu ze-viscosity ze-MHEC zifaka isandla ekungeneni okungcono kwi-substrates ene-porous, ukuphucula i-adhesive bond.
Ukongezelela, isicelo esifanayo kunye nesilawulwayo esiququzelelwa yi-MHEC siqinisekisa ukuba i-adhesive okanye i-sealant yenza i-bond eqhubekayo kunye ne-substrate. Oku kufana kunceda ekwandiseni indawo yoqhagamshelwano kunye namandla okudibanisa okunamathelayo. Iipropati ezidibeneyo nazo ziphuculwe, njengoko izinto eziphathekayo zigcina ingqibelelo kwaye aziqhekezanga okanye zikhupha kwi-substrate.
Ukuchasana neMiba yokusiNgqongileyo
Izinto zokuncamathelisa kunye nezitywina zihlala zisesichengeni sezinto ezahlukeneyo zokusingqongileyo ezinje ngokuguquguquka kobushushu, ukufuma, kunye nokuvezwa kweekhemikhali. I-MHEC inegalelo ekuqina kunye nokuqina kwezi zinto phantsi kweemeko ezinjalo. Iimpawu zokugcina amanzi ze-MHEC zinceda ekugcineni ukuguquguquka kunye nokuqina kwama-sealants, okuyimfuneko ekuhlaliseni ukwanda kwe-thermal kunye nokunciphisa ngaphandle kokuqhekeka.
Ngaphezu koko, i-MHEC iphucula ukuchasana kwe-adhesives kunye ne-sealants ekuthotyweni okubangelwa ukukhanya kwe-ultraviolet (UV) kunye ne-oxidation. Oku kuqiniswa kokuqina kuqinisekisa ukuba ukusebenza kwe-adhesive okanye i-sealant ihlala ingaguquguquki ixesha elide, nakwiimeko ezibuhlungu zokusingqongileyo.
Ukuhambelana nezinye izongezo
I-MHEC iyahambelana noluhlu olubanzi lwezinye izongezo ezisetyenziswa kwi-adhesives kunye ne-sealants. Oku kuhambelana kuvumela abaqulunqi ukuba badibanise i-MHEC kunye nezinye izongezo ezisebenzayo ukufezekisa iimpawu ezithile zokusebenza. Ngokomzekelo, i-MHEC inokusetyenziswa ecaleni kweeplastiki, izihluzi, kunye nezizinzi zokuphucula ukuguquguquka, ukunciphisa ukucutheka, kunye nokuphucula ukusebenza ngokubanzi.
Oku kuguquguquka kwenza i-MHEC ibe yinto exabisekileyo ekuqulunqweni kwe-adhesives eziphambili kunye ne-sealants, eyenza ukuphuhliswa kweemveliso ezilungiselelwe izicelo ezithile kunye neemfuno zokusebenza.
I-Methyl Hydroxyethyl Cellulose (MHEC) iphakamisa kakhulu ukusebenza kwe-adhesives kunye ne-sealants ngokusebenzisa iimpawu zayo ezizodwa. Ngokuphucula i-viscosity, ukugcinwa kwamanzi, ukusebenza, ixesha elivulekileyo, ukunamathela, kunye nokuchasana nezinto ezisingqongileyo, i-MHEC iqinisekisa ukuba i-adhesives kunye ne-sealants yenza ngokufanelekileyo kwizicelo ezahlukeneyo. Ukuhambelana kwayo kunye nezinye izongezo kwandisa ngakumbi ukusetyenziswa kwayo, okwenza kube yinto ebalulekileyo ekuqulunqweni kwezinto ezincamathelayo eziphezulu kunye ne-sealants. Njengoko amashishini aqhubeka efuna izinto eziphathekayo kunye nokusebenza okuphezulu kunye nokuthembeka, indima ye-MHEC kwi-adhesives kunye ne-sealants inokuthi ibonakale ngakumbi.
Ixesha lokuposa: May-24-2024