Dambudziko rekutsiva munyu we lead ne calcium zinc stabilizers rinofanira kugadziriswa

Zvigadziko zvecalcium zinc stabilizers zvinoumbwa zvakanyanya nesipo yestearic acid, zvichiteverwa nesipo yelauric acid nesipo yeoleic acid. Chigadzirwa ichi chine mafuta akanaka uye hachideredzi kunyorova kwezvigadzirwa zvePVC zvakaoma, zvichiita kuti zvikwanise kugadziriswa mapaipi ePVC akaomarara uye ma profiles.
Zvigadzirwa zvinogadzirwa uchishandisa tekinoroji ye microemulsification zvinokunda matambudziko ataurwa pamusoro apa. Vanhu vanotarisa pazvinhu zviviri zvekuvandudza: kuvandudza ruvara rwekutanga, sipo ye zinc yakakwana inowedzerwa, uye chelating agents inoshandiswa kuita kuti zinc chloride isakuvadze. Izvi zvinozivikanwa se high zinc coordinate: kuderedza huwandu hwesipo ye zinc inowedzerwa kudzvinyirira kupisa zinc, uye kushandisa zvinowedzera kuchinja ruvara rwekutanga. Nzira iyi inozivikanwa se low zinc coordinate., Haingoshandiswi zvakanyanya muzvigadzirwa zvakapfava chete, mhedzisiro yayo yekugadzikana kwekupisa uye kujeka kwayo zvakaonekwa, asiwo zvinobudirira kushandiswa mukugadzirisa zvigadzirwa zvakaoma. Kuti kuchengetedza ruvara rwekutanga kushoma uye kudzvinyirira kupisa zinc mu calcium/zinc system
Kazhinji, munyu we lead unongonamira pamusoro pezvidimbu zvePVC, izvo zvinokanganisa kusangana pakati pezvidimbu zvePVC, zvichinonotsa zvikuru kubatanidzwa kwepurasitiki, zvichideredza kukweshana pakati pezvidimbu zvePVC, uye zvichideredza kuchekwa kwePVC. Midziyo yekugadzirisa inogona kutsungirira mitoro yakaderera. Munyu we lead unoshandiswa wakawanda, zvidimbu zvemunyu we lead zvinova zvishoma, uye mhedzisiro yacho inooneka zvakanyanya.
Zvigadzirwa zvechinyakare zvisingakuvadzi nharaunda zvakaita secalcium zinc stabilizers, nekuda kwehukuru hwazvo hwe electronegativity, zvine hukama hwakati pakati pemapoka e polar uye acute nodes ye PVC resin panguva ye plasticization process, zvichigadzira strong bond energy complexes, nokudaro zvichideredza kana kubvisa kukwezvana kwe ion bonds muzvikamu zvakasiyana zve PVC. Izvi zvinoita kuti zvikamu zve chain zve PVC zvakabatana zvive nyore kupararira, uye miganhu iri pakati pemapoka ema molecular ive nyore kutetepa, zvichikurudzira plasticization ye PVC resin. Izvi zvinokonzera kuwedzera nekukurumidza kwekumanikidzwa kwekunyunguduka, kudzikira kwe melt viscosity, kuwedzera kwekupisa, uye kudzikira kwe plasticization tembiricha mushure mekunge resin yaiswa plasticized zvishoma muchikamu chekudyisa. Resin transition plasticization yakaitika zvakare.
Nekuda kwekuti michina yekugadzira PVC yechinyakare yakagadzirirwa kugadziriswa ne lead salt stabilizers, kunyangwe kuwedzera mafuta akawanda hakugoni kudzivirira kuwedzera kwepurasitiki ye resin munguva yakakwana, uye zvakare kukanganisa kuenzana kwekunyorovesa kwekutanga. Kushandiswa kwePVC melt muchikamu che homogenization kunodya huwandu hwakawanda hwe heat stabilizer, asi hakugone kuwana viscosity yakakwana uye elasticity kuti isangane nezvinodiwa zvekugadzirwa kwePVC yakaoma. Iri idambudziko rinofanira kugadziriswa ne calcium zinc stabilizers pakutsiva lead salts.