Zeolite molecule sieves atwetwe adwene kɛse wɔ nnansa yi mfe mu sɛ nneɛma a ɛma nneɛma gyina pintinn wɔ plastic adwumayɛ mu, te sɛ polyvinyl chloride (PVC) ne polypropylene (PP). Wɔtaa de siw nneɛma a ɛsɛe ade ano na ɛma ɔhyew a ɛyɛ den no yɛ kɛse, na wɔnam saayɛ so ma ɔsom nkwa nna tenten.
PVC Zeolite a ɛma nneɛma yɛ den
PVC fi awosu mu tumi te ɔhyew nka, entumi nnyina pintinn yiye wɔ ɔhyew mu, na ɛtaa sɛe wɔ ɔhyew a ɛkɔ soro mu. Ɛho hia sɛ wɔde thermal stabilizers siw PVC nneɛma a ɛporɔw, kɔla a ɛbɛsakra, ne mfiridwuma mu nneɛma a ɛyera ano.
PVC ma hydrogen chloride fi adi bere a ɛwɔ ɔhyew mu, na ɛno ne ade tẽẽ a ɛma PVC kɔla yɛ tuntum na sɛe wɔ adwumayɛ mu. Enti nneɛma a ɛma ɔhyew no gyina hɔ ma no na ɛma hydrogen chloride ntumi nyɛ hwee na esiw nkɔnsɔnkɔnsɔn a ɛsɛe no ano.
Zeolite molecule sieves wɔ tumi a ɛtwetwe hydrogen chloride, na ɛtumi nso ne calcium anaa zinc stabilizers yɛ adwuma bom de ma PVC hyeɛ a ɛtumi gyina pintinn nyinaa yɛ kɛseɛ, na ɛma PVC kɔla a ɛsakra mfitiaseɛ ne ɔhaw a ɛkyɛ{0}}bere tenten no atu mpɔn.
PP Zeolite a ɛma nneɛma gyina hɔ pintinn
PP yɛ nea ɛyɛ mmerɛw sɛ ɛbɛyɛ oxidation, ɔhyew mu mpaapaemu, anaasɛ photodegradation, na enti ɛhwehwɛ sɛ wɔde nnuru a ekum ɔyare mmoawa ne nneɛma a ɛma ɔhyew gyina ka ho. Titiriw wɔ masterbatches a wɔahyɛ no ma ne nneɛma a wɔasan de adi dwuma mu no, efĩ (nsu, acid) bɛma nneɛma a ɛsɛe no ayɛ ntɛmntɛm.
Zeolite molecule sieves twetwe nsuo a aka wɔ PP nhyehyɛeɛ mu ma ɛma dwumadie no gyina pintinn, ɛtwetwe acidic efĩ te sɛ peroxides ne organic acids ma ɛma antioxidant ahoɔden yɛ kɛseɛ, na ɛtumi nso ne nneɛma foforɔ a wɔde ka ho yɛ adwuma de siw ɔhyew ne oxygen a ɛkɔ so no kwan, na ɛnam so ma PP dwumadie nkwa nna trɛw.
Sɛ́ PP stabilizers anaasɛ fillers of PP composite no, molecule sieves ntu anaasɛ ɛnsɛe, ɛwɔ thermal stability pa, na wobetumi de afra inorganic fillers anaa additives mu de ama PP nneɛma no adwumayɛ atu mpɔn.
Zeolite Molekyule Sieves Ma PVC / PP Stabilizers
Zeolite molecule sieves a wobetumi de adi dwuma ama PVC/PP stabilizers no bi ne type A, P, X ne Y. Nanso, type A molecular sieve (sɛ nhwɛso no. 4A zeolite powder) fata kɛse esiane sɛnea wɔde di dwuma ne ɛka-a etu mpɔn nti.
Type 3A zeolite molecular sieve: Wɔtaa de di dwuma sɛ desiccants de twetwe nsu a ɛwɔ PVC anaa PP nhyehyɛe mu. Ɛsan nso wɔ nkɛntɛnso bi wɔ acid a ɛnyɛ hwee (te sɛ trace acid a ɛnam oxidative degradation so na ɛba) a ɛkyere wɔ PP nhyehyɛe ahorow mu no so.
Type 4A zeolite molecular sieve: Wɔ PVC stabilizers mu no, ɛtwetwe hydrogen chloride molecule nketenkete, na esiw ɔsɛe a ɛba no ano na ɛma ɔhyew mu kɔla a ɛsakra no tu mpɔn. Wɔ PP stabilizers mu no, ɛtwetwe nsuo ne acidic efĩ, na ɛma dwumadie no gyina pintinn na ɛtew ɔsɛeɛ dodoɔ so.
Type 5A zeolite molecule sieve: Ɛtwe hydrogen chloride ne efĩ molecules a ɛba bere a wɔreyɛ PVC adwuma no, na wɔde di dwuma titiriw de ma adsorption tumi ne ɔhyew a ɛko tia no tu mpɔn.
Type 13X zeolite molecular sieve: Ɛwɔ tumi a ɛtwetwe nsuo kɛseɛ na ɛtumi twetwe hydrogen chloride, sulphur dioxide, ne mframa foforɔ a ɛwɔ acid. Wɔtaa de di dwuma wɔ PVC additive nhyehyɛe pɔtee bi mu anaasɛ sɛ composite stabilizer carrier.