Kwihlabathi lanamhlanje elikhawulezayo, imfuneko yezincamathelisi ezisebenzayo nezithembekileyo ibaluleke kakhulu. Amashishini aqala ekupakisheni ukuya kwiimoto axhomekeke kakhulu kwizincamathelisi ukuze anike iibhondi ezihlala ixesha elide nezihlala ixesha elide. Isithako esiphambili esidlala indima ebalulekileyo ekwenziweni kwezincamathelisi ezikumgangatho ophezulu yi-hydrocarbon resin. Ii-hydrocarbon resins ziye zaba lukhetho oludumileyo phakathi kwabavelisi bezincamathelisi ngenxa yeempawu zazo zokubopha ezigqwesileyo kunye nokuguquguquka kwazo.
Iiresin zehydrocarbon ziipolymers ezithathwe kwi-petroleum eziye zabonakala zizithako ezixabisekileyo kwishishini le-adhesives. Yi-resin ye-thermoplastic eyenzelwe ngokukodwa ukuphucula ukusebenza ngokubanzi kwe-adhesives ngokuphucula i-tack, i-cohesion kunye ne-compatibility. Le resin iguquguqukayo isetyenziswa kwiindidi ezahlukeneyo ze-adhesive ezifana ne-hot melt, i-pressure sensitive kunye ne-solvent-based adhesives.
Iimpawu ezibalaseleyo zokuncamathelisa ze-hydrocarbon resins zibangelwa kakhulu bulwakhiwo lwazo lweemolekyuli kunye neempawu zazo ezikhethekileyo. Ii-hydrocarbon resins zinamathela kakuhle kwiintlobo ngeentlobo ze-substrates. Olu buchule bokubopha obuphezulu luqinisekisa ukuba ii-adhesives ezenziwe ngee-hydrocarbon resins zibonelela ngezibopho eziqinileyo nezithembekileyo nakwiindawo ezinzima.
Iingenelo zokusebenzisa ii-resin ze-hydrocarbon kwimixube yokuncamathelisa zininzi. Okokuqala, isebenza njenge-tackifier, iphucula iipropati zokuncamathelisa ze-adhesive ngokwandisa i-tack yayo. Oku kubaluleke kakhulu kwizicelo ezinoxinzelelo ezifana neeteyiphu zokupakisha okanye iileyibhile, apho i-bond yokuqala eqinileyo ibalulekile. Ii-resin ze-hydrocarbon ziyayonyusa i-tack ye-adhesive kwaye ziphucula amandla ayo okunamathela ngokukhawuleza emva kokudibana ne-substrate.
Okwesibini, ii-hydrocarbon resins ziqinisa umanyano lwe-adhesives, zizenza zikwazi ukumelana noxinzelelo kwaye zigcine ukuthembeka kwazo ngokuhamba kwexesha. Oku kuluncedo ngakumbi xa kusetyenziswa i-adhesive apho kufuneka imelane namaqondo obushushu ahlukeneyo, ukufuma okanye ezinye iimeko zokusingqongileyo. Ngokufaka ii-hydrocarbon resins kwimixube yabo, abavelisi be-adhesive banokuqinisekisa ukuba iimveliso zabo ziyakwazi ukumelana neemeko ezinzima ngaphandle kokubeka emngciphekweni amandla azo okubopha.
Enye inzuzo ebalulekileyo yee-hydrocarbon resins kukuhambelana kwazo nezinye izinto ezincamathelayo. Ingaxutywa lula neendidi ezahlukeneyo zeepolymers, ii-tackifiers kunye nezongezo, nto leyo evumela abavelisi be-adhesive ukuba balungelelanise iifomyula ngokweemfuno ezithile. Oku kuguquguquka kwenza ii-hydrocarbon resins zibe lukhetho oluhle kakhulu lokwenza ii-adhesive ezineempawu ezifunwayo ezifana ne-viscosity, i-elasticity kunye nokuqina.
Kubalulekile ukuqaphela ukuba ukukhetha i-hydrocarbon resin efanelekileyo yokwenza i-adhesive kubalulekile ukuze ufumane iziphumo ezilungileyo. Amanqanaba ahlukeneyo e-hydrocarbon resins anamanqanaba ahlukeneyo okuthamba, ubunzima be-molecular kunye nokwakheka kweekhemikhali. Izinto ezifana nohlobo lwe-adhesive olufunekayo, indlela yokusebenzisa, kunye neemfuno zokusebenza kufuneka ziqwalaselwe ngononophelo ngaphambi kokukhetha i-hydrocarbon resin efanelekileyo.
Ngenxa yokwanda kwemfuno yezincamathelisi ezisebenza kakuhle, ukubaluleka kwee-hydrocarbon resins kweli shishini akunakugxininiswa kakhulu. Iimpawu zayo ezintle zokubopha, ukuhambelana kwayo kunye nokuguquguquka kwayo kwenza ukuba ibe lolona khetho luphambili lwabavelisi bezincamathelisi kwihlabathi liphela. Nokuba zizinto zokubopha kwindibano yeemoto, ukuphucula izisombululo zokupakisha, okanye ukuphucula ukuqina kwezinto zokwakha, ii-hydrocarbon resins ziyaqhubeka nokudlala indima ebalulekileyo kwishishini lezincamathelisi.
Ukuqukumbela, ii-hydrocarbon resins zisisombululo esinamandla sokuncamathelisa. Ngenxa yeempawu zayo zokuncamathelisa ezingenakuthelekiswa nanto, ukuhambelana nezinye izithako kunye nokuguquguquka kwefomyula, iqinisekisa ukuveliswa kwee-adhesives ezikumgangatho ophezulu kwiintlobo ngeentlobo zezicelo. Njengoko ishishini liqhubeka nokukhangela izisombululo zokuncamathelisa ezinokuthenjwa, ukufaka ii-hydrocarbon resins kwiifomyula zokuncamathelisa kuhlala kuyindlela elungileyo yokuqinisekisa iibhondi ezihlala ixesha elide nezisebenzayo.
Ixesha lokuthumela: Juni-19-2023