Iipropati zomzimba kunye nemisebenzi ephambili ye-PVC processing aids

I-PVC processing aid yi-polymer yokufakelwa kwe-thermoplastic efunyenwe kwi-polymerization ye-methyl methacrylate kunye ne-acrylate nge-lotion yembewu. Isetyenziselwa ikakhulu ukusetyenzwa kunye nokuveliswa kwezinto zePVC. Unefuthe elihle ekuphuculeni ukuchasana kwempembelelo yezinto zePVC. Inokulungiselela indlela yokwenza i-polymerization enamanyathelo amaninzi isebenzisa imbewu ye-polymerization ye-polymerization, kuquka i-polymerization yendabuko kunye ne-core shell lotion polymerization. Inzuzo yayo ilele kumandla okulawula ukubunjwa, ubungakanani, ubukhulu beqokobhe, umlinganiselo weqokobhe ukuya kwiradiyasi engundoqo, iimpawu zokusebenza komphezulu, njl. njl .

Eyona mathiriyeli ikrwada yePVC yokuncedisa ekusetyenzweni yi-acrylic esters kunye ne-methyl methacrylate. Kwimveliso yokwenyani, i-acrylate idla ngokuba yipolymer yokuqala kunye nezinye iimonomers (ezifana ne-styrene, i-acrylonitrile, njl.njl.) ngokusebenzisa i-lotion ukwenza i-polymer enobushushu obuphantsi beglasi yokutshintsha, oko kukuthi, undoqo oneempawu ze-elastomer, kwaye emva koko igrafti i-copolymerized nge-methyl methacrylate. , i-styrene, njl. ukwenza i-polymer kunye nesakhiwo esingundoqo seqokobhe. Isiqulatho esiqinileyo sale loshini eyenziwe ngepolymerized ngokubanzi malunga ne-45% ± 3%, kwaye iloshini yomiswa kwaye iphelelwe ngamanzi ukwenza umthamo wamanzi wemveliso ube ngaphantsi kwe-1% (iqhezu lobunzima) ukufumana iimveliso zomgubo omhlophe.

I-Core shell lotion polymerization ngundoqo we-ACR yeteknoloji yokuvelisa intlaka. Ulwakhiwo lweqokobhe olungundoqo lwe-ACR lunokwahlulwa lube ziindidi ezintathu: ulwakhiwo lweqokobhe oluthambileyo olungundoqo oluthambileyo, nolwakhiwo oluthambileyo oluqinileyo olunemigangatho emithathu. Nangona kunjalo, olona didi luphambili luthengiswayo ngoku kwimarike “lulwakhiwo lweqokobhe oluthambileyo olusisiseko”. Iirensi ze-ACR ezinesi sakhiwo zisebenza kakuhle kwaye zisetyenziswa ngokubanzi. I-core shell lotion polymerization ye "soft core hard shell structure" yinkqubo apho imonoma eqinile ihlonyelwa kwimbewu yamasuntswana e-latex athambileyo enziwe linyathelo lokuqala le-lotion polymerization. Uhlobo kunye nedosi ye-emulsifiers, i-core-shell ratio, i-shell monomer feeding method, i-crosslinking degree yembewu ye-latex particles (i-rubber core), ubungakanani bamasuntswana embewu, kunye nohlobo kunye ne-dosage ye-agent ye-crosslinking zonke zinempembelelo ebalulekileyo kwisakhiwo se-core-shell. ye-ACR i-latex particles kunye nokusebenza kokugqibela kwemveliso ye-ACR.