Antibacterial Action
Bactericidal Mechanism: Thaum zinc oxide antibacterial agents tuaj rau hauv kev sib cuag nrog cov kab mob, zinc ions maj mam tso tawm. Vim lawv cov khoom siv redox thiab lawv lub peev xwm los ua haujlwm nrog cov organic ua haujlwm (xws li sulfhydryl, carboxyl, thiab hydroxyl pawg), cov zinc ions khi rau cov kab mob cell membranes thiab membrane proteins, yog li cuam tshuam lawv cov qauv. Thaum nkag mus rau hauv lub cell, lawv puas enzymes nyob rau hauv lub electron thauj system thiab reacts nrog DNA, yog li ua tau ib tug bactericidal nyhuv.
Cov nyhuv Photocatalytic: Tus naj npawb ntawm cov atoms saum npoo hauv nano- cov zinc oxide me me yog qhov ntau dua li cov khoom siv ib txwm muaj. Vim tias tsis muaj kev sib koom ua ke ntawm cov atoms, cov atoms saum npoo no muaj lub zog siab, uas txhim kho kev sib raug zoo ntawm zinc oxide thiab cov kab mob, yog li txhim kho cov kab mob bactericidal. Nyob rau hauv lub teeb irradiation, nano-zinc oxide raug hloov hluav taws xob thiab hloov hluav taws xob, tsim hluav taws xob- qhov sib txuas ntawm qhov chaw particle. Thaum sib cuag nrog ambient dej thiab oxygen, cov khub no tsim superoxide anions thiab hydroxyl radicals (OH⁻). Superoxide anions muaj peev xwm tua cov kab mob muaj zog, thaum hydroxyl radicals tuaj yeem hnov mob nrog feem ntau cov organic tshuaj - txhawb nqa lawv cov decomposition - yog li ntxiv txhim kho tag nrho cov kab mob bactericidal.
Daim Ntawv Thov: Kev sib xyaw zinc oxide antibacterial agents rau hauv cov khoom ntim yas pab tiv thaiv cov khoom noj los ntawm cov kab mob thiab lwm yam kab mob. Ntxiv cov tshuaj no rau cov khoom siv yas kho mob pab txo qis kev pheej hmoo ntawm kab mob. Tsis tas li ntawd, kev koom ua ke rau hauv cov menyuam yaus cov khoom ua si yas pab txo qis kev noj qab haus huv rau cov menyuam yaus uas tshwm sim los ntawm cov kab mob loj.
Txhim kho Mechanical Properties
Kev siv lub cev muaj zog: Lub nanoscale qhov ntev ntawm nano-zinc oxide tso cai rau nws los sau cov chaw nruab nrab ntawm cov yas molecular chains, yog li muab lub cev muaj zog ntxiv. Piv txwv li, ntxiv tus nqi tsim nyog ntawm nano-zinc oxide rau polypropylene (PP) plastics tsim muaj kev sib cuam tshuam ntawm cov nanoparticles thiab PP matrix. Qhov no ua rau muaj kev hloov pauv kev ntxhov siab, ua rau muaj kev txhim kho tseem ceeb hauv lub zog tensile thiab flexural modulus ntawm PP yas.
Txhim kho Toughness: Qhov sib ntxiv ntawm nano-zinc oxide kuj tseem ua haujlwm los txhim kho cov tawv tawv ntawm cov yas, txo lawv qhov cuam tshuam rau cov pob txha tawg thaum raug kev nyuaj siab.
Resistance rau UV Aging
UV Shielding: Nano-zinc oxide ua raws li kev ua haujlwm zoo ntawm ultraviolet (UV) absorber thiab shielding agent, muaj peev xwm ntawm ob qho tib si cuam tshuam thiab tawg hluav taws xob UV. Kev hloov hluav taws xob hauv nws cov qauv siv lead ua ua kom nws nqus tau UV lub zog, muab kev tiv thaiv zoo tiv thaiv UV hluav taws xob hauv 300-400 nm wavelength range (tshwj xeeb UV-B thiab ib feem ntawm UV-A). Daim Ntawv Thov: Kev koom ua ke ntawm nano-zinc oxide rau hauv cov khoom xws li sab nraum zoov PVC piping thiab yas siv profiles (piv txwv li, yas qhov rais thav duab) zoo retards cov txheej txheem ntawm cov yas, yog li ncua nws cov kev pab cuam lub neej.
Kev tsim cov khoom siv ua haujlwm:
Conductive Plastics: Nano-zinc oxide inherently muaj qee qhov kev ntsuas hluav taws xob. Los ntawm cov txheej txheem ua kom tsim nyog-xws li kev sib xyaw nrog cov khoom siv hluav taws xob lossis siv cov txheej txheem tshwj xeeb doping- nws tuaj yeem siv los tsim cov yas conductive. Hauv kev lag luam hluav taws xob, cov khoom siv hluav taws xob ua haujlwm ua cov khoom siv los tiv thaiv- ntim khoom zoo li qub rau cov khoom siv hluav taws xob, cov khoom siv hluav taws xob tiv thaiv hluav taws xob, thiab cov ntawv siv zoo sib xws.
Tus kheej-Plastics ntxuav: Los ntawm kev siv cov khoom siv photocatalytic ntawm nano-zinc oxide, cov ntaub ntawv yas photocatalytic uas muaj peev xwm tsim tau tus kheej- ntxuav thiab deodorizing muaj peev xwm tsim tau. Thaum raug lub teeb, nano-zinc oxide catalyzes decomposition ntawm organic paug-xws li roj thiab hmoov av-tam sim no ntawm cov yas nto. Cov ntaub ntawv no pom cov ntawv thov hauv cov haujlwm xws li cov khoom siv hauv tsheb hauv tsheb mus rau cov khoom siv yas hauv tsev, pab tswj kev huv ntawm qhov chaw thiab txo qhov zaus ntawm kev ntxuav phau ntawv.
