Heat stabilizer ndechimwe chezvinhu zvinonyanya kukosha zvekuwedzera muPVC kugadzirisa.PVC heat stabilizer inoshandiswa mune diki nhamba, asi basa rayo rakakura.Kushandiswa kwekudziya kwekushisa muPVC kugadzirisa kunogona kuve nechokwadi kuti PVC haisi nyore kudzikisa uye kugadzikana.Thewakisi ye polyethyleneinoshandiswa muPVC stabilizer ichawana lubrication balance effect.Muchigadzirwa chekugadzirwa kwechigadzirwa, inobatsira kupurasitiki, kupararira uye kusanganiswa, kuumba chitarisiko uye kuenzana kwekuyerera;Uye kuwana kupisa conduction uye kuenzanisa pasina kunamatira uye kuchengetedza;Kazhinji, inofunga nezvemaitiro ePE wax (lubricant) uye yekutanga, yepakati uye yekupedzisira nhanho.Panguva imwecheteyo, kutsetseka kweiyo stabilizer kuchataridzirwa, tichifunga nezvemukati uye kunze kutsetseka.

Heat stabilizers anowanzo shandiswa muPVC kugadzirisa anosanganisira basic lead salt stabilizers, metal sipo stabilizers, organotin stabilizers, zvisingawanzo pasi stabilizers, epoxy compounds, nezvimwe.
Kutungamira munyu stabilizer
Lead munyu ndiyo inonyanya kushandiswa kupisa stabilizer yePVC, uye dosage yayo inogona kuverengera inopfuura hafu yePVC heat stabilizer.
Zvakanakira zve lead salt stabilizer: yakanakisa kugadzikana kwemafuta, kugadzikana kwehurefu hwekupisa, kuvharisa kwemagetsi kwakanyanya uye kunaka kwemamiriro ekunze.
Kuipa kwe lead salt stabilizer: kusaparadzika kwakashata, kuchetura kwakanyanya, kutanga kwemavara, kunetsa kuwana zvinhu zvinoonekera uye zvigadzirwa zvine mavara akajeka, kushaikwa kwekuzora, kuitira kuti ibudise sarufa uye inoparadzanisa kusvibiswa.
Iwo anowanzo shandiswa lead salt stabilizers ndeaya:
Tribasic lead sulfate, molecular formula: 3PbO · PbSO4 · H2O, code TLS, white powder, density 6.4g / cm3.Tribasic lead sulfate inowanzoshandiswa stabilizer.Inowanzo shandiswa pamwe chete ne dibasic lead phosphite.Lubricant inoda kuwedzerwa nekuti haina lubricity.Inonyanya kushandiswa muPVC yakaoma opaque zvigadzirwa, uye dosi yacho inowanzo 2 ~ 7 zvikamu.
Dibasic lead phosphite, molecular formula: 2PbO · pbhpo3 · 1 / 2H2O, code DL, white powder, density 6.1g/cm3.Kugadzikana kwekupisa kwe dibasic lead phosphite kwakadzikira zvishoma pane iyo ye tribasic lead sulfate, asi kuramba kwemamiriro ekunze kuri nani pane iyo ye tribasic lead sulfate.Dibasic lead phosphite inowanzoshandiswa pamwe chete netribasic lead sulfate, uye dosi yacho inowanzoita hafu yeiyo tribasic lead sulfate.
Dibasic lead stearate, kodhi inonzi DLS, haina kujairika se tribasic lead sulfate uye dibasic lead phosphite uye ine lubricity.Inowanzoshandiswa pamwe chete ne tribasic lead sulfate uye dibasic lead phosphite muhuwandu hwe 0.5 ~ 1.5 phr.
Kuti udzivise chepfu yehupfu inotungamira munyu inodzikamisa kubva kubhururuka ichienda, kusvibisa zvakanyanya nharaunda yekugadzira uye kugadzirisa kupararira kweiyo stabilizer, isina huruva-isina composite lead salt heat stabilizer yakagadziridzwa uye inoshandiswa kumba nekune dzimwe nyika.Nzira yekugadzira ndeiyi:
Pasi pekupisa uye kusanganisa mamiriro, akasiyana-siyana anotungamira munyu stabilizers uye anobatsira kupisa stabilizers ane synergistic mhedzisiro anoparadzirwa zvakazara uye anosanganiswa nemukati uye ekunze lubricant kuita granular kana flake lead salt composite stabilizers.Inogona kusangana nezvinodiwa zvehunyanzvi zvekugadzikana kwekudziya uye mukati nekunze lubrication nekuiwedzera kuPVC resin zvinoenderana nenhamba yakati yezvikamu (pasina kuwedzera mamwe ma stabilizer uye lubricant).
Zvinonzi inotungamira munyu stabilizer inoshandiswa mukugadzira guruva-isina lead salt composite stabilizer ine yakanaka particles, iyo inowedzera nzvimbo yekutarisana nehydrogen chloride.Nekuti inosanganisirwa nemafuta emukati nekunze, ine yakanakisa kupararira, yakagadziridza zvakanyanya kugadzikana kwekupisa uye kuderedzwa dosi.

Sipo dzesimbi
Huwandu hwe main stabilizer ndiyo yechipiri yakakura chikamu mushure me lead munyu.Kunyangwe kugadzikana kwayo kwekupisa kusina kunaka semunyu we lead, inewo lubricity.Haina chepfu kunze kweCD nePb, inoonekera kunze kwePb neCa, uye haina kusvibiswa kwemhepo.Nokudaro, inoshandiswa zvakanyanya muPVC yakapfava, yakadai seisina-chepfu uye yakajeka.
Sipo dzesimbi dzinogona kuva simbi (lead, barium, cadmium, zinc, calcium, etc.) munyu wemafuta acids (lauric acid, stearic acid, naphthenic acid, nezvimwewo), pakati peiyo stearate ndiyo inonyanya kushandiswa.Kurongeka kwekugadzikana kwekupisa ndiko: zinc munyu > cadmium munyu > lead salt > calcium salt / barium salt.
Sipo dzesimbi kazhinji hadzishandiswe dzoga.Anowanzo shandiswa pakati pesipo dzesimbi kana musanganiswa nesauti yemutobvu uye organic tin.
Zinc stearate (znst), isiri-chepfu uye yakajeka, iri nyore kukonzera "zinc kupisa", iyo inowanzoshandiswa pamwe chete neBA uye Ca sipo.
Calcium stearate (CAST), ine good processability, isina sulfide kusvibiswa uye pachena, inowanzoshandiswa pamwe chete neZn sipo.
Cadmium stearate (cdst), seyakajeka inodzikamisa, ine muchetura mukuru uye haimirire kusvibiswa kwesulfide.Inowanzoshandiswa pamwe chete neBA sipo.
Lead stearate (PBST), ine kugadzikana kwakanaka kwekupisa, inogona kushandiswawo semafuta.Izvo zvisingabatsiri zviri nyore kudonha, kusajeka kwakashata, chepfu uye yakakomba sulfide kusvibiswa.Inowanzoshandiswa pamwe chete neBA uye CD sipo.
Barium stearate (BST), isiri-chepfu, anti sulfide kusvibiswa, yakajeka, inowanzoshandiswa nePb uye Ca sipo.
Mhedzisiro yekutsvagisa uye maitiro anoratidza kuti sipo yesimbi kupisa stabilizer kazhinji haina kukodzera kushandiswa yega, uye yakanaka synergistic mhedzisiro inogona kuwanikwa nekushandiswa kwekomboni.Nekuda kwekusiyana kweanionic chikamu, synergist, solvent kana kupararira kwesimbi sipo kupisa stabilizer, composite simbi sipo kupisa stabilizer inogona kukamurwa kuita yakasimba uye mvura.
Calcium stearate uye zinc hazvisi-chepfu kupisa stabilizers nemutengo wakaderera, izvo zvakakodzerwa nePVC zvigadzirwa zvekurongedza chikafu.Mhedzisiro yacho inoratidza kuti zinc sipo stabilizer ine yakakwira ionization simba rinogona kuita, rinosangana ne allyl chloride paPVC molecule, inogona kudzikamisa PVC uye inhibit iyo yekutanga coloring maitiro.Zvakadaro, ZnCl2 inogadzirwa nemaitiro inokurudzira kubvisa HCl uye inogona kukurudzira kuderedzwa kwePVC.Sipo yakasanganiswa yecalcium haigone kuita neHCl chete, asiwo inopindirana neZnCl2 kuumba CaCl2 uye kugadzirazve zinc sipo.CaCl2 haina catalytic effect pakubviswa kweHCl, uye kuomeswa kweZnCl2 ine calcium derivatives inogona kuderedza kugona kwayo kwekubvisa HCl.Iko kusanganiswa kwe epoxy compounds ne calcium uye zinc sipo kune yakanaka synergistic effect.Kazhinji, iyo isiri-chepfu inosanganiswa kupisa inodzikamisa inonyanya kuumbwa necalcium stearate, zinc stearate uye epoxy soybean oleate.Zvakakosha kuziva kuti, β- Kusanganiswa kwe diketone itsva yekubatsira kupisa stabilizer uye calcium uye zinc soap stabilizer inokurudzira kuwedzera kwekushandiswa kwe-non-chepfu calcium uye zinc composite stabilizer.Inoshandiswa mune zvimwe zvinhu zvekurongedza chikafu senge mabhodhoro ePVC nemashiti.
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