Zeolite molecular sieves zakopa chidwi kwambiri m'zaka zaposachedwa monga zokhazikika mumakampani apulasitiki, monga polyvinyl chloride (PVC) ndi polypropylene (PP). Nthawi zambiri amagwiritsidwa ntchito poletsa kuonongeka ndi kukulitsa kukhazikika kwa kutentha, potero kumawonjezera moyo wautumiki.
PVC Zeolite Stabilizer
PVC imakhudzidwa kwambiri ndi kutentha, kusakhazikika kwamafuta, komanso kutha kuwonongeka pakatentha kwambiri. Matenthedwe okhazikika amafunikira kuti ateteze kuwonongeka, kusinthika, ndi kuwonongeka kwamakina kwa zinthu za PVC.
PVC imatulutsa hydrogen chloride ikatenthedwa ndi kutentha, zomwe ndizomwe zimapangitsa kuti PVC ikhale mdima komanso kuti isagwire bwino ntchito. Chifukwa chake matenthedwe okhazikika amathandizira kusalowerera ndale kwa hydrogen chloride komanso kuletsa kuwonongeka kwa unyolo.
Masefa a molekyulu a Zeolite amatha kusungunula hydrogen chloride, ndipo amathanso kugwira ntchito limodzi ndi calcium kapena zinc stabilizers kuti apititse patsogolo kutentha kwa PVC, ndikuwongolera kusinthika koyambirira komanso{0}}mavuto okalamba a nthawi yayitali a PVC.
PP Zeolite Stabilizer
PP imakhudzidwa ndi okosijeni, kuphulika kwa kutentha, kapena kuwonongeka kwa zithunzi, motero kumafuna kuwonjezera kwa antioxidants ndi zolimbitsa thupi. Makamaka mu masterbatches odzazidwa ndi zida zobwezerezedwanso, zonyansa (madzi, ma acid) zimafulumizitsa njira yowononga.
Zeolite molekyulu sieves amamwa madzi otsalira mu PP dongosolo kukonza kukhazikika kwa processing, kuyamwa zosafunika acidic monga peroxides ndi organic zidulo kumapangitsanso antioxidant katundu, ndipo amathanso ntchito synergy ndi zina zowonjezera kuletsa kufala kwa kutentha ndi mpweya, potero kuwonjezera moyo utumiki wa PP.
Monga zolimbitsa thupi za PP kapena zodzaza ndi PP zophatikizika, masieve a maselo sasuntha kapena kusinthasintha, amakhala ndi kukhazikika kwamafuta, ndipo amatha kusakanikirana ndi zodzaza ndi organic kapena zowonjezera kuti apititse patsogolo magwiridwe antchito a zida za PP.
Zeolite Molecular Sieves Kwa PVC/PP Stabilizers
Zeolite molecular sieve zomwe zingagwiritsidwe ntchito pa PVC/PP stabilizers zimaphatikizapo mtundu A, P, X ndi Y. Komabe, mtundu wa A molecular sieve (monga. 4A zeolite powder) ndi woyenera kwambiri chifukwa chakugwiritsa ntchito kwake komanso mtengo wake{3}}mwachangu.
Lembani 3A zeolite molecular sieve: Nthawi zambiri amagwiritsidwa ntchito ngati desiccants kuti atenge chinyezi mu machitidwe a PVC kapena PP. Zimakhalanso ndi zotsatira zina pakugwira ma asidi aulere (monga trace acids opangidwa ndi kuwonongeka kwa okosijeni) mu machitidwe a PP.
Type 4A zeolite molecular sieve: Mu PVC stabilizers, imatenga mamolekyu ang'onoang'ono a hydrogen chloride, kuteteza kuwonongeka ndikuwongolera kusinthika kwamafuta. Mu PP stabilizers, imatenga chinyezi ndi zonyansa za acidic, kupititsa patsogolo kukhazikika kwa kukonza ndikuchepetsa ziwopsezo.
Type 5A zeolite molecular sieve: Imatenga ma hydrogen chloride ndi mamolekyu onyansa omwe amatulutsidwa panthawi ya PVC, ndipo amagwiritsidwa ntchito makamaka kupititsa patsogolo mphamvu ya adsorption ndi kukana kutentha.
Type 13X zeolite molecular sieve: Ili ndi mphamvu yokulirapo ndipo imatha kuyamwa hydrogen chloride, sulfure dioxide, ndi mpweya wina wa acidic. Nthawi zambiri amagwiritsidwa ntchito pamakina owonjezera a PVC kapena ngati chonyamulira chokhazikika.
