Iimpawu ezibonakalayo kunye nemisebenzi ephambili yezixhobo zokulungisa i-PVC

Uncedo lokucubungula i-PVC yi-polymer ye-thermoplastic graft efunyenwe kwi-polymerization ye-methyl methacrylate kunye ne-acrylate nge-seed lotion. Isetyenziswa kakhulu ekucubunguleni nasekuveliseni izixhobo ze-PVC. Inefuthe elihle ekuphuculeni ukumelana nempembelelo yezinto ze-PVC. Ingalungiselela indlela ye-polymerization enamanyathelo amaninzi isebenzisa i-seed lotion polymerization, kubandakanya i-lotion polymerization yendabuko kunye ne-core shell lotion polymerization. Inzuzo yayo ikukwazi ukulawula ukwakheka, ubungakanani, ubukhulu begobolondo, umlinganiselo wegobolondo kwi-core radius, iimpawu zomsebenzi womphezulu, njl.njl. wamasuntswana ngokweemfuno ezahlukeneyo ngexesha lenkqubo yokusabela kokwenziwa, kwaye ukusasazwa kobungakanani besuntswana okubangelwayo kuyafana.

Izinto eziphambili ezisetyenziswa ekulungiseni i-PVC zi-acrylic esters kunye ne-methyl methacrylate. Kwimveliso yokwenyani, i-acrylate idla ngokwenziwa i-polymer kunye nezinye ii-monomers (ezifana ne-styrene, i-acrylonitrile, njl.njl.) nge-lotion ukuze kwenziwe i-polymer enobushushu obuphantsi bokutshintsha kweglasi, oko kukuthi, i-core eneempawu ze-elastomer, ize emva koko i-graft copolymerized ene-methyl methacrylate, i-styrene, njl.njl. ukuze kwenziwe i-polymer enesakhiwo se-core shell. Umxholo oqinileyo wale lotion polymerized lotion ngokubanzi umalunga ne-45% ± 3%, kwaye i-lotion iyomiswa kwaye ikhutshwe amanzi ukuze kwenziwe umxholo wamanzi wemveliso ungaphantsi kwe-1% (inxalenye yobunzima) ukuze kufunyanwe iimveliso zomgubo omhlophe.

I-core shell lotion polymerization yeyona nto iphambili kwitekhnoloji yokuvelisa i-resin ye-ACR. Ulwakhiwo lwe-core shell ye-ACR lunokwahlulwa lube ziintlobo ezintathu: ulwakhiwo lwe-hard core soft shell, ulwakhiwo lwe-soft core hard shell, kunye nolwakhiwo lwe-hard soft hard-layer ezintathu. Nangona kunjalo, uhlobo oluphambili oluthengiswayo ngoku kwimarike "lulwakhiwo lwe-soft core hard shell". Ii-ACR resin ezinesi sakhiwo zisebenza kakuhle kwaye zisetyenziswa kakhulu. I-core shell lotion polymerization ye-"soft core hard shell structure" yinkqubo apho i-hard monomer ifakelwa kwimbewu yamasuntswana e-latex athambileyo enziwe linyathelo lokuqala le-lotion polymerization. Uhlobo kunye nomthamo wee-emulsifiers, umlinganiselo we-core-shell, indlela yokutya ye-shell monomer, inqanaba lokudibanisa amasuntswana e-latex embewu (i-rubber core), ubungakanani bamasuntswana embewu, kunye nohlobo kunye nomthamo we-agent yokudibanisa zonke zinempembelelo enkulu kwisakhiwo se-core-shell samasuntswana e-latex e-ACR kunye nokusebenza kwemveliso yokugqibela ye-ACR.