Yintoni ukwakheka kweekhemikhali zomgubo welatex ophinda uhlakazwe?

I-redispersible polymer powders (RDP) yimixube eyinkimbinkimbi yeepolymers kunye nezongezo ezisetyenziswa ngokubanzi kwizinto zokwakha, ngakumbi kwimveliso yodaka oluxubileyo. Ezi powders zidlala indima ebalulekileyo ekuphuculeni ukusebenza kunye neempawu zezixhobo zokwakha ezahlukeneyo ezifana ne-tile adhesives, i-grouts, i-self-leveling compounds kunye ne-cementitious plasters.

Amalungu aphambili:

Isiseko sepolymer:

I-Ethylene vinyl acetate (EVA): I-copolymer ye-EVA isetyenziswa ngokuqhelekileyo kwi-RDP ngenxa yeempawu zayo ezibalaseleyo zokwenza ifilimu, ukunamathela, kunye nokuguquguquka. Umxholo we-vinyl acetate kwi-copolymer unokutshintshwa ukuze utshintshe iimpawu zepolymer.

I-Vinyl Acetate vs. Ethylene Carbonate: Ngokuxhomekeke kwiimfuno ezithile zesicelo, abavelisi banokusebenzisa i-ethylene carbonate endaweni ye-vinyl acetate. I-ethylene carbonate iye yaphucula ukumelana namanzi kunye nokubambelela kwiimeko ezimanzi.

I-Acrylics: I-Acrylic polymers, kuquka i-acrylics ecocekileyo okanye i-copolymers, isetyenziselwa ukuxhathisa imozulu, ukuqina, kunye nokuguquguquka. Baziwa ngokubonelela ngokunamathela ngokugqwesileyo kwiintlobo ezahlukeneyo ze-substrates.

I-colloid ekhuselayo:

I-Hydroxypropyl methylcellulose (HPMC): I-HPMC yi-colloid ekhuselayo esetyenziswa ngokuqhelekileyo kwi-RDP. Iphucula i-dispersibility ye-polymer particles kunye nokwandisa iipropati ezipheleleyo zomgubo.

I-Polyvinyl alcohol (PVA): I-PVA yenye i-colloid ekhuselayo encedisa ukuzinza kunye nokusabalalisa iinqununu ze-polymer. Ikwadlala indima ekulawuleni i-viscosity ye powder.

Iplastiki:

I-Dibutyl Phthalate (DBP): I-DBP ngumzekelo we-plasticizer ehlala yongezwa kwi-RDP ukuphucula ukuguquguquka kunye nokusebenza. Inceda ukuthoba iqondo lobushushu beglasi yepolymer, iyenze ilastiki ngakumbi.

isigcwalisi:

I-Calcium Carbonate: Iifayili ezifana ne-calcium carbonate zinokudibaniswa ukuze kuphuculwe ubuninzi beepowder kunye nokubonelela ngendlela engabizi kakhulu yokulungelelanisa iimpawu ezifana nokuthungwa, i-porosity kunye ne-opacity.

Izinza kunye ne-antioxidants:

Izinzisi: Ezi zisetyenziselwa ukuthintela ukuthotywa kwepolymer ngexesha lokugcinwa kunye nokucubungula.

I-Antioxidants: I-Antioxidants ikhusela i-polymer ekuthotyweni kwe-oxidative, iqinisekisa ubomi obude be-RDP.

Imisebenzi yecandelo ngalinye:

Isiseko sePolymer: Ibonelela ngeempawu zokwenza ifilimu, ukunamathela, ukuguquguquka kunye namandla omatshini kwimveliso yokugqibela.

I-colloid ekhuselayo: Ukuphucula ukuchithwa kwakhona, ukuzinza kunye nokusabalalisa amaqhekeza e-polymer.

I-Plasticizer: Iphucula ukuguquguquka kunye nokuqhubekeka.

Izigcwalisi: Lungisa iipropathi ezifana nokuthungwa, i-porosity, kunye ne-opacity.

I-Stabilizers kunye ne-antioxidants: Thintela ukuthotywa kwepolymer ngexesha lokugcinwa kunye nokusebenza.

ukuququmbela:

Redispersible polymer powder (RDP) yinto eguquguqukayo kwaye ibalulekileyo kwizinto zokwakha zanamhlanje. Ukubunjwa kwayo kweekhemikhali, kubandakanywa iipolymers ezifana ne-EVA okanye i-acrylic resins, i-colloids yokukhusela, i-plasticizers, i-fillers, i-stabilizers kunye ne-antioxidants, iqulunqwe ngokucophelela ukuhlangabezana neemfuno ezithile zesicelo ngasinye. Ukudibanisa la macandelo kunceda ukuphucula i-powder redispersibility, amandla ebhondi, ukuguquguquka kunye nokusebenza ngokubanzi kwimixube eyomileyo yodaka.