Ndezvipi zvakanakira uye kuipa kwekuwedzera hydrotalcite kune calcium zinc stabilizers?

Hydrotalc chinhu chakakosha mbishi zvinhu zve calcium zinc stabilizers. Hydrotalc ine yakasarudzika chimiro uye zvivakwa, uye yayo yakakosha zvimiro ndeye alkalinity uye yakawanda porosity, ine yakasarudzika uye yakanakisa kuita uye kushanda nesimba. Inogona kunyatso tora iyo hydrogen chloride yakaburitswa panguva yekushatiswa kwePVC, inonoke iyo pachayo inokonzeresa mhedzisiro yehydrogen chloride paPVC resin, uye kuita seanomwisa asidhi, inozivikanwawo sekugadzikana kwekupisa. Inowanzoshandiswa se thermal stabilizer.
Hydrotalc zvakare ine zvakanakira kubuda pachena, insulation, kuramba mamiriro ekunze, uye processability. Haina kusvibiswa ne sulfides, isiri-chepfu, uye inogona kushanda pamwe chete nekupisa zvinomisa senge zinc sipo uye organic tin. Iyo imhando inovimbisa kwazvo yeasina-chepfu yekubatsira kupisa stabilizer.
Chimiro che hydrotalcite chakaturikidzwa neyakakura interlayer spacing ye 0.76-0.79nm, uye ine hombe yakananga nzvimbo, iyo inobvumira ayo epamusoro hydroxyl mapoka kuti aite zvizere nehydrogen chloride uye ine mhedzisiro yakanaka pane inodzikamisa.
Izvo zvisingabatsiri zve hydrotalcite ndezvi:
1. Panyaya yekuchena kwekutanga, hydrotalcite haina mhedzisiro pakuvandudzwa kwePVC yekutanga coloring ingave yega kana mukubatana ne calcium zinc system. Mushure mekuchembera muovheni inopisa ye180 ℃, ruvara rwemuenzaniso runoita rutsvuku.
2. Pakugadzikana kweCongo tsvuku inopisa, chiito chimwe chete che hydrotalcite chinogona kuvandudza nguva yekupisa kwePVC, uye nekuwedzera kwekuwedzera kwekuwedzera, nguva yekupisa kwePVC inoratidza kuwedzera kwemaitiro, asi kuwedzera hakuna kukosha.
3. Apo kusanganiswa kwe hydrotalcite uye calcium zinc system inoshandiswa sechigadziridzo chekushisa, nguva yekudzikama kwePVC inovandudzwa zvakanyanya, uye maitiro ekuwedzera kwekushisa kwekushisa nguva nekuwedzera kwekuwedzera mari inogutsikana zvakare. Naizvozvo, dihydroxy metal hydroxides inofanirwa kuverengerwa seyakareba-yakarebesa thermal stabilizers, iyo inogona zvinobudirira kuwedzera kwenguva yakareba yekudziya kugadzikana nguva yePVC. Saka, kana uchibatanidza calcium zinc stabilizers, hydrotalcite ndeimwe yezvinhu zvakakosha zvekushandisa.