tala fou

Ultraviolet absorber (UV absorber) o se moli faʻamautu e mafai ona mitiia le vaega ultraviolet o le susulu o le la ma faʻapogai malamalama e aunoa ma le suia o ia lava. Ultraviolet absorber o le tele o paʻepaʻe tioata paʻepaʻe, lelei mautu vevela, mautu kemisi lelei, colorless, le oona, odorless, masani ona faaaoga i polymers (plastics, ma isi), coatings ma isi.

O le tele o lanu, aemaise lava lanu lanu e le fa'aogaina, e mafai ona ta'alo se tikeri o le fa'amautuina o le malamalama pe'a fa'aoga na'o i oloa palasitika. Mo oloa palasitika lanu mo le faʻaaogaina umi i fafo, o le faʻamautuina o le malamalama o le oloa e le mafai ona faʻaleleia e le lanu na o ia. E na'o le fa'aogaina o le moli fa'amautu e mafai ona fa'agata pe fa'agesegese le fua o le matua o le palasitika lanu mo se taimi umi. Faʻaleleia lelei le faʻamautuina o le malamalama o oloa palasitika lanu. Amine fa'amautu malamalama fa'alavelave (HALS) o se vasega o mea fa'aola amine fa'atasi ai ma a'afiaga fa'alavelave. Ona o ana galuega tauave o le decomposing hydroperoxide, tineia radically okesene, mailei free radicals, ma toe faʻaaogaina o vaega lelei, HALS o le palasitika moli stabilizer ma le maualuga anti-photoaging lelei ma le aofaiga tele i le fale ma fafo. O faʻamatalaga o loʻo faʻaalia ai o le faʻamautu malamalama talafeagai poʻo le faʻaogaina o le faʻaogaina o le antioxidant ma le stabilizer malamalama e mafai ona faʻaleleia atili le malamalama ma le okesene o oloa palasitika lanu i fafo i le tele o taimi. Mo oloa palasitika lanu e photoactive ma photosensitive colorants (e pei o cadmium samasama, uncored rutile, ma isi), mafaufau i le catalytic aafiaga photoaging o le colorant, e tatau ona faateleina le aofaiga o le stabilizer malamalama e tusa ai.

Uv absorbers e masani ona fa'avasegaina e tusa ai ma le fausaga o vaila'au, vaega vaega o gaioiga ma le fa'aoga, lea o lo'o fa'amatalaina i lalo:

1.Classification e tusa ai ma le vailaʻau vailaʻau: ultraviolet absorbers e mafai ona vaevaeina i organic ultraviolet absorbers ma inorganic ultraviolet absorbers. O vailaʻau ultraviolet e masani ona aofia ai benzoates, benzotriazole, cyanoacrylate, ma isi, ae o mea faʻapipiʻi ultraviolet e aofia ai le zinc oxide, iron oxide, titanium dioxide ma isi.

2.Classification e tusa ai ma le faiga o le gaioiga: ultraviolet absorber e mafai ona vaevaeina i ituaiga talipupuni ma ituaiga absorption. E mafai ona fa'aamana'ia le malamalama UV ma puipuia ai mai le ulu atu i totonu o le tino, a'o fa'afefeteina UV e mafai ona mitiia le malamalama UV ma liua i le vevela po'o le malamalama va'aia.

3.Classification e tusa ai ma le faʻaaogaina: e mafai ona vaevaeina le ultraviolet absorbent i le cosmetic grade, food grade, pharmaceutical grade, etc. Cosmetic grade UV absorbers e masani ona faʻaaogaina i le sunscreen, paʻu tausiga oloa ma isi mea teuteu, meaʻai vailaʻau UV e masani ona faʻaaogaina i meaʻai. mea fa'apipi'i, ma vaila'au va'aiga UV absorbers e masani ona fa'aaogaina i vaila'au.

Unilong Industry o se tagata tomai faapitoagaosi UV, e mafai ona matou tuʻuina atu mea neiUV faasologao oloa, afai e te manaʻomia, faʻamolemole lagona le saoloto e faʻafesoʻotaʻi i matou