Ngokuphathelele ingxaki yokuba umgubo we-putty kulula ukuwuguba, okanye amandla awonelanga. Njengoko sonke sisazi, i-cellulose ether kufuneka yongezwe ukwenza umgubo we-putty, i-HPMC isetyenziselwa i-wall putty, kwaye abasebenzisi abaninzi abayongezi umgubo we-latex ophinda uqhekeke. Abantu abaninzi abayongezi umgubo we-polymer ukuze bonge iindleko, kodwa oku kukwangundoqo wesizathu sokuba i-putty eqhelekileyo ibe ngumgubo kwaye inokuba neengxaki zomgangatho wemveliso!
I-putty eqhelekileyo (efana ne-821 putty) yenziwe kakhulu ngomgubo omhlophe, iglue encinci yesitatshi kunye ne-CMC (hydroxymethyl cellulose), kwaye ezinye zenziwe nge-methyl cellulose kunye nomgubo we-Shuangfei. Le putty ayinamatheli kwaye ayixhathisi manzi.
I-Cellulose inokufunxa amanzi ize idumbe emva kokuba inyibilikisiwe emanzini. Iimveliso ezivela kubavelisi abahlukeneyo zinezinga lokufunxa amanzi elahlukileyo. I-Cellulose idlala indima ekugcinweni kwamanzi kwi-putty. I-putty eyomileyo inamandla athile okwethutyana, kwaye iya kususwa kancinci emva kwexesha elide. Oku kunxulumene kakhulu nolwakhiwo lwe-molecular ye-cellulose ngokwayo. I-putty enjalo ikhululekile, inokufunxa amanzi amaninzi, kulula ukuyicola, ayinamandla, kwaye ayinakuthamba. Ukuba i-topcoat ifakwe phezulu, i-PVC ephantsi kulula ukuyiqhuma kwaye igrumbe; i-PVC ephezulu kulula ukuyicutha nokuqhekeka; ngenxa yokufunxa amanzi amaninzi, iya kuchaphazela ukwakheka kwefilimu kunye nesiphumo sokwakhiwa kwe-topcoat.
Ukuba ufuna ukuphucula iingxaki ze-putty ezingentla, ungayilungisa ifomula ye-putty, wongeze umgubo we-latex ophinda unyibilike ngokufanelekileyo ukuphucula amandla amva e-putty, kwaye ukhethe i-hydroxypropyl methylcellulose HPMC ekumgangatho ophezulu enomgangatho oqinisekisiweyo.
Kwinkqubo yokuvelisa i-putty, ukuba ubungakanani bomgubo we-latex ophinda uqhekeke ongezelelweyo awanelanga, okanye ukuba kusetyenziswa umgubo we-latex ongaphantsi kwe-putty, iya kuba naliphi ifuthe kumgubo we-putty?
Ubungakanani obungonelanga be-putty redispersible latex powder, eyona nto ibonakalayo kukuba umaleko we-putty ukhululekile, umphezulu uyacolwa, ubungakanani bepeyinti esetyenziselwa ukugquma bukhulu, ipropathi yokulinganisa ayilunganga, umphezulu urhabaxa emva kokwenziwa kwefilimu, kwaye kunzima ukwenza ifilimu yepeyinti exineneyo. Ezi ndonga ziyakwazi ukuxobuka, ukudumba, ukuxobuka, kunye nokuqhekeka kwefilimu yepeyinti. Ukuba ukhetha i-lower putty powder, kuyacaca ukuba iigesi ezinobungozi ezifana ne-formaldehyde eziveliswa eludongeni ziya kubangela ingozi kwabanye.
Ixesha lokuthumela: Juni-15-2023