Ungayikhetha kanjani i-UV Absorber?

Ungayikhetha kanjani i-UV Absorber?

Kulesi sihloko, sikhuluma ngamaphuzu asemqoka wokukhethwa kwe-polymer anti-UV, ngethemba lokukukhuthaza. Izithombe ze-polymer empeleni zifana nendlela yokuguga okushisayo, womabili amandla angaphandle ahlasela uchungechunge lwama-molecular, kanti ama-radicals amahhala akhiqize ukulungiswa kokonakala kwama-polymar, futhi ukuvezwa kwangaphandle kuyinkinga yokushintsha kombala we-polymer, ukwehla kombala we-polymer, nokuphelelwa obala.

I-polymer anti-UV ngokuvamile iqala kusuka ezicini ezimbili: eyodwa ukugqoka izingubo ze-sunscreen ze-polymer, bese uguqula amandla e-ultraviolet ibe yimisebe yokushisa ngokusebenzisa imisebe yokushisa ngokushisa, ngaleyo ndlela ukuvikela i-polymer. Okwesibili ukufuza i-polymer, amanye amaqembu e-polymer ajabule nge-UV, ephumela kuma-radicals wamahhala (umlilo), ngokuvimbela ukusabela okukhanyayo okubangelwa ama-radicals wamahhala, ngaleyo ndlela ugweme ukulimala okukhulu kwe-polymer.

Sekukonke, izithasiselo zokuguga kwe-anti-UV zidinga ukucubungula izici eziyi-7, njengoba kuchaziwe ngezansi:

1)Ukusebenza - Ukuqina:

Ngemuva kokuthi i-UVA ivezwa ukukhanya isikhathi eside, isakhiwo sayo samakhemikhali sizoshintsha unomphela, silahlekelwe amandla okudonsa imisebe ye-ultraviolet, ebizwa ngokuthi i-PhotoLife ye-UVA. Phakathi kwazo, i-Triazine Uva (efana ne-Yih1064 / 1577, njll.) Uhlobo lwempilo ende kunazo zonke kunazo zonke, ngakho-ke ilungele ezinye izinhlelo ezidinga ukumelana kwesimo sezulu eside. Vele, ukusetshenziswa kwe-benzotriazoles evamile (efana ne-yihoo UV234 / 531, njll.) Noma iBenzophenone yokusetshenziswa okujwayelekile kwanele.

2)Ukusebenza - Umbala kanye nezindawo ezibonakalayo ziyagcinwa

Uma ugxila ekuvikelweni okuluhlaza komkhiqizo, umphumela wama-hales asobala (ama-hales awadingi ukucubungula ukuqina komphumela), uma kugxilwe kakhulu (ngaphansi kwesisekelo sokuba ngumkhiqizo okungcono, futhi isilinganiso salababili singashintshwa njengoba kudingeka.

3)Ukubukeka - umbala wokuqala

UVa umunca ukukhanya kwe-ultraviolet, kepha futhi umunca ukukhanya okufushane okufushane, okuholela kumbala wokuqala womkhiqizo ophuzi. Ngezicelo ezinezidingo zombala eziphezulu eziphezulu, ezisuselwa ku-UV ezisuselwa ku-UV ziyindlela engcono.

4)Ubukhulu bomkhiqizo:

UVA udinga ukushuba okuthile emsebenzini (umthetho kaBill Ranbier), nama-hales akudingeki acubungule le nkinga, ngakho-ke ama-70% ama-hales asetshenziswa emikhiqizweni emincane efana nefilimu, usilika, nopende. Sidinga futhi ukubheka lolu daba lapho siklama ukwakheka okuvimbela i-UV. Ngasikhathi sinye, ukushuba kuzothinta nokukhethwa kwesisindo kwamangqamuzana, futhi ngokuvamile khetha izinkundla ezincane zamangqamuzana emikhiqizo emincane.

5)Ukuvumelana kwe-Resin:

Izithasiselo azihambelani ne-resin, futhi izulu lizoholela ekubukekeni okungatheni njengokuqaqamba komhlaba, kanye nokulahlekelwa yizakhiwo ezivikelayo.

Ku-TPU, okuyinto engahambelani ikakhulukazi nezengezo, i-YiHoo Polymer ithuthukise i-Ultraviolet Absorber esebenzayo, i-diol eneqembu elingenayo le-ultraviolet, elingezwa ngengxenye ye-polymetane chain futhi iba yingxenye ye-polymer chain, ngokuxazulula ukuxazulula inkinga ye-polymer.

6)Ukuvumelana nefomula ephelele:

Uma kukhulunywa ngokuhambisana, into yokuqala yi-acidity ne-alkalinity. Njenge-Amine Evinjelwe, ama-Hales azokhombisa i-acidity ehlukile ne-alkalinity, kanye ne-acidity evamile ye-acidity kanye ne-alkalinity kanjena (PKB incane ne-alkaline):

Amanye ama-resins noma izengezo yi-acidic, ngakho-ke gwema ukwengeza izengezo ze-alkaline, okujwayelekile njenge-PVC (ukukhishwa kwe-acidic hcl ngesikhathi sokuhlanza i-PC), ama-polycarbonate asebeni kalula ama-additives ama-thieasters nawo anezelamani (ukungqubuzana nama-alkaline hals).

7)Izidingo ezikhethekile zesigcawu: Ukusobala, ukukhishwa kwe-solvent ukumelana:

Ekugcineni, sikhuluma ngezinkinga ezimbalwa ezikhethekile ezivimbela ukumelana ne-UV ngokuvimbela, ezinye iziphuzo ezisebenzayo ziqukethe i-carotene, imisebe ye-caragamaolet izodala ukuwohloka komkhiqizo, kuvinjelwe imikhiqizo yokuthola umkhiqizo, izibuko, imikhiqizo ye-elekthronikhi nezinye zisetshenziswa futhi zinazo izinhlelo zokusebenza.

Okwesibili ukukhishwa okuvimbela ukumelana nokwamanzi, ukukhishwa okuvimbela amanzi kuvame kakhulu kuma-hales (njengopende wemoto), ngakho-ke sekuvele kukhona imikhiqizo eminingi emakethe ukuhambelana. Kodwa-ke, ezinye izimbotshana noma imikhiqizo yepulasitiki edinga ukumelana kwesimo sezulu kuzoxhumana nezikhathi ze-oily isikhathi eside, futhi akulula ukumelana nokukhishwa kwe-solvent, futhi i-YOHOO LS119 iyi-alkali esebenzayo, ethola ukugeza iziqubu ngaphandle kokukhishwa. Lokhu okungenhla kungamaphuzu ethu ayi-7 okukhethwa kwezithasiselo ezivinjelwe i-UV, uhlelo lokusebenza olusebenzayo luzoba lunkimbinkimbi ngokwengeziwe, kwesinye isikhathi udinga ukwenza ukuhweba, kwesinye isikhathi udinga ukubheka ukuthi "kutholakale umkhiqizo" futhi nginethemba lokuhlangana.

Qingdao yihoo polymer technology Co, Ltd.uzibophezele ekunikezeni amandla asezingeni eliphakeme le-ultraviolet, ama-antioxidants, amalangabi ama-retaardants neminye imikhiqizo, wamukelekile ukuxhumana nganoma yisiphi isikhathi:yihoo@yihoopolymer.com