Ndezvipi zvakanakira nezvakaipa zvekuwedzera hydrotalcite mu calcium zinc stabilizers?

Hydrotalc chinhu chakakosha pakugadzira calcium zinc stabilizers. Hydrotalc ine chimiro chayo chakakosha, uye hunhu hwayo hwepamusoro ialkalinity uye multi porosity, ine mashandiro akasiyana uye akanaka kwazvo uye inoshanda. Inogona kunwisa hydrogen chloride inoburitswa panguva yekuora kwePVC, kunonoka hydrogen chloride inoburitsa hydrogen chloride paPVC resin, uye inoshanda semushonga unonyungudutsa acid, inozivikanwawo se thermal stabilizer. Inowanzoshandiswa se thermal stabilizer.
Hydrotalc inewo zvakanakira zvekujekesa zvakanaka, kudzivirira kupisa, kuramba mamiriro ekunze, uye kugona kugadzikisa zvinhu. Haina kusvibiswa nesulfides, haina chepfu, uye inogona kushanda pamwe chete nezvinodzivirira kupisa zvakaita sesipo yezinc uye organic tin. Imhando yechinhu chinosimbisa kupisa chisina chepfu.
Maumbirwo ehydrotalcite akarongwa nepakati pezvikamu zve0.76-0.79nm, uye ine nzvimbo yakakura chaiyo, izvo zvinoita kuti mapoka ayo ehydroxyl pamusoro agone kuita zvizere nehydrogen chloride uye ane mhedzisiro yakanaka pakugadzirisa zvinhu.
Zvikanganiso zve hydrotalcite ndezvi:
1. Kana tichitarisa kuchena kwekutanga, hydrotalcite haina zvainoita pakuvandudza ruvara rwekutanga rwePVC kungave kuri kwega kana kuti pamwe chete necalcium zinc system. Mushure mekucheneswa muovheni inopisa ye180 ℃, ruvara rwemuenzaniso runowanzova rutsvuku.
2. Pakugadzikana kweCongo red heat, kushanda kamwe chete kwehydrotalcite kunogona kuvandudza nguva yekugadzikana kwekupisa kwePVC, uye nekuwedzera kwehuwandu hwekuwedzera, nguva yekugadzikana kwekupisa kwePVC inoratidza mafambiro ari kuwedzera, asi kuwedzera hakuna kukosha.
3. Kana musanganiswa wehydrotalcite necalcium zinc system ukashandiswa sechinosimbisa kupisa, nguva yekugadzikana kwekupisa yePVC inovandudzika zvakanyanya, uye maitiro ekuwedzera nguva yekugadzikana kwekupisa nekuwedzera huwandu hwekuwedzera anogutswawo. Nokudaro, dihydroxy metal hydroxides inofanira kuverengerwa sezvinotsigira kupisa kwenguva refu, izvo zvinogona kuwedzera nguva yekugadzikana kwekupisa kwenguva refu yePVC. Saka, kana ichiwedzera zvinotsigira calcium zinc, hydrotalcite ndeimwe yezvinhu zvakakosha.