Iri bepa rinoongorora maitiro ekupisa anodzikamisa anokanganisa PVC zvigadzirwa, tichitarisakupisa kuramba, processability, uye pachena. Nekuongorora zvinyorwa uye data rekuyedza, tinoongorora kudyidzana pakati pezvigadzika nePVC resin, uye magadzirirwo azvinoita kugadzikana kwekupisa, nyore kugadzira, uye zvinhu zvemaziso.
1. Nhanganyaya
PVC inoshandiswa zvakanyanya thermoplastic, asi kusagadzikana kwayo kwekushisa kunomisa kugadzirisa.Heat stabilizerskudzikisira kudzikisira panguva yakakwira uye zvakare kukanganisa processability uye pachena-yakakosha kune maapplication akaita sekurongedza uye ekuvaka mafirimu.
2. Heat Resistance yeStabilizers muPVC
2.1 Kudzikamisa Mechanisms
Yakasiyana stabilizers (lead-based,calcium - zinc, organotin) shandisa nzira dzakasiyana:
Kutungamira - kwakavakirwa: React nelabile Cl maatomu mumaketani ePVC kuti aumbe akatsiga makomba, kudzivirira kudzikira.
Calcium - zingi: Sanganisa asidhi - kusunga uye radical - scavenging.
Organotin (methyl/butyl tin): Rongedza nemaketani epolymer kuti inhibit dehydrochlorination, zvinobudirira kudzvanyirira kudzikisira.
2.2 Kuongorora Kugadzikana Kwekupisa
Thermogravimetric analysis (TGA) bvunzo dzinoratidza organotin - yakagadzikana PVC ine yakakwira yekutanga degradation temps pane yechinyakare calcium - zinc masisitimu. Nepo lead-based stabilizers inopa kugadzikana kwenguva refu mune mamwe maitiro, zvakatipoteredza / hutano zvinonetsa zvinorambidza kushandiswa.
3. Processability Migumisiro
3.1 Melt Flow & Viscosity
Stabilizers inoshandura PVC's kunyungudika maitiro:
Calcium - zingi: Inogona kuwedzera kunyunguduka viscosity, ichitadzisa extrusion / jekiseni kuumba.
Organotin: Deredza viscosity yekutsvedzerera, yakaderera - temp processing-yakanakira yakakwirira-yekumhanyisa mitsetse.
Kutungamira - kwakavakirwa: Kuyerera kwepakati kunyungudika asi mahwindo akamanikana ekugadzirisa nekuda kweplate - kunze kwenjodzi.
3.2 Lubrication & Mold Release
Mamwe ma stabilizer anoshanda semafuta ekuzora:
Calcium - zinc formulations inowanzobatanidza mafuta emukati kuti avandudze kusunungurwa kwe mold mukuumba jekiseni.
Organotin stabilizers inosimudzira PVC - yekuwedzera kuenderana, zvisina kunanga kubatsira processability.
4. Impact paKujeka
4.1 Kudyidzana nePVC Chimiro
Kujeka kunoenderana nekudzikamisa kupararira muPVC:
Zvakanaka - zvakapararira, zviduku - particle calcium - zinc stabilizers inoderedza kupararira kwechiedza, kuchengetedza kujeka.
Organotin stabilizersbatanidza mumaketani ePVC, kuderedza kukanganiswa kwemaziso.
Lead - based stabilizers (yakakura, isina kugovaniswa zvimedu) inokonzera kupararira kwechiedza chinorema, kuderedza kujeka.
4.2 Stabilizer Types & Transparency
Zvidzidzo zvekuenzanisa zvinoratidza:
Organotin - yakagadzikana PVC mafirimu anosvika> 90% mwenje transmittance.
Calcium - zinc stabilizers goho ~ 85-88% transmittance.
Lead - based stabilizers inoita zvakanyanya.
Kukanganisa se "maziso ehove" (akasungirirwa ku stabilizer quality / kupararira) zvakare kuderedza kujekesa-yepamusoro-yemhando inodzikamisa inoderedza nyaya idzi.
5. Mhedziso
Heat stabilizers akakosha paPVC kugadzirisa, kuumba kupisa kuramba, processability, uye pachena:
Kutungamira - kwakavakirwa: Ipa kugadzikana asi kutarisana nemamiriro ekunze backlash.
Calcium - zingi: Eco - inoshamwaridzana asi inoda kuvandudzwa mukugadzirisa / pachena.
Organotin: Excel pane ese maficha asi anotarisana nemutengo / zvipingamupinyi zvekudzora mune mamwe matunhu.
Tsvagiridzo yenguva yemberi inofanirwa kuvandudza ma stabilizers kuenzanisa kusimba, kugadzirisa kushanda zvakanaka, uye mhando yemaziso kusangana nezvido zveindasitiri.
Nguva yekutumira: Jun-23-2025