Ƙa'idar canjin launi da tsarin canza launi na thermochromic:
Thermochromic pigment wani nau'in microcapsules ne wanda ke canza launi akai-akai tare da hawan zafi ko faɗuwa.
An shirya pigment ɗin thermochromic mai jujjuyawa daga tsarin mahaɗan kwayoyin halitta nau'in canja wurin lantarki.Nau'in canja wurin lantarki nau'in kwayoyin halitta wani nau'i ne na tsarin canza launin halitta tare da tsarin sinadarai na musamman.A wani takamaiman zafin jiki, tsarin kwayoyin halitta na kwayoyin halitta yana canzawa saboda canja wurin lantarki, don haka fahimtar canjin launi.Wannan abu mai canza launi ba kawai mai haske bane a launi, amma kuma yana iya gane canjin launi daga yanayin "launi === maras launi" da "marasa launi === masu launi".Wani nau'in hadadden gishirin ƙarfe ne mai nauyi da nau'in kristal na ruwa mai jujjuyawa yanayin zafi Abin da abun bai mallaka ba.
Ana kiran abin da ake iya juyar da ma'aunin thermochromic na microencapsulated mai juyawa thermochromic pigment (wanda aka fi sani da: thermochromic pigment, thermopowder ko thermochromic foda).Barbashi na wannan pigment suna da siffar zobe, tare da matsakaicin diamita na 2 zuwa 7 microns (micron ɗaya daidai yake da dubu ɗaya na millimita).Ciki abu ne mai canza launin, kuma waje shine harsashi mai haske game da kauri 0.2 ~ 0.5 microns wanda baya narkewa kuma baya narkewa.Ita ce ke ba da kariya ga abin da ke canza launin daga yazawar wasu sinadarai.Saboda haka, yana da matukar muhimmanci a guji lalata wannan harsashi yayin amfani.
Canjin launi zazzabi na thermochromic pigment
1. M zafin jiki canza launi zazzabi
A gaskiya ma, yanayin canjin launi na thermochromic pigments ba yanayin zafi ba ne, amma yanayin zafi, wato, yanayin zafin jiki (T0 ~ T1) wanda aka haɗa daga farkon canjin launi zuwa ƙarshen canjin launi.Fadin wannan zafinAture kewayon yawanci 4 ~ 6℃.Wasu nau'ikan da ke da daidaiton launi mai girma (ƙunƙuntattun nau'ikan kewayon, wanda aka nuna ta “N”) suna da kunkuntar yanayin yanayin canza launin, kawai 2 ~ 3℃.
Gabaɗaya, muna ayyana yanayin zafin jiki na T1 wanda ya dace da kammala canjin launi yayin tsarin dumama zafin jiki akai-akai azaman canjin canjin launi na pigment na thermochromic.
2. Lokacin zagayowar yanayin zafi yana canza launi:
Ɗauki ɗan ƙaramin adadin da aka gwada mai canza launi, haɗa shi da manne epoxy 504, goge samfurin (kauri 0.05-0.08 mm) akan farar takarda kuma bar shi ya tsaya a dakin da zafin jiki sama da 20 ° C na kwana ɗaya.Yanke ƙirar takarda 10 × 30 mm.Zuba 600 ml guda biyurs kuma cika su da ruwa.Ruwan zafin jiki shine 5 ~ 20℃sama da babba iyaka (T1) na kewayon canjin canjin launi na samfurin da aka gwada kuma bai gaza 5 ba℃ƙasa da ƙananan iyaka (T0).(Don jerin tawada na RF-65, an saita zafin ruwa azaman T0=35℃, T1=70℃.), da kuma kiyaye zafin ruwa.Ana nutsar da samfurin a cikin beaker biyu bi da bi, kuma lokacin kammala kowane zagayowar shine 3 zuwa 4 seconds.Lura da canjin launi kuma yi rikodin lambar sake zagayowar launi (yawanci, yanayin canjin launi number na thermal decolorization jerin ya fi 4000-8000 sau).
Yanayin amfani da thermochromic pigments:
The reversible thermochromic pigment kanta ne m tsarin (kwantar da hankali da wuya a canza), don haka haske juriya, zafi juriya, tsufa juriya da sauran kaddarorin ne nisa kasa da talakawa pigments, da hankali ya kamata a biya a cikin amfani.
1. Juriya mai haske:
Alamun thermochromic suna da ƙarancin juriya na haske kuma da sauri za su shuɗe kuma su zama marasa aiki a ƙarƙashin hasken rana mai ƙarfi, don haka sun dace da amfani na cikin gida kawai.Ka guje wa hasken rana mai ƙarfi da hasken ultraviolet, wanda zai taimaka tsawanta rayuwar launi mai canza launi.
2. Juriyar zafi:
Thermochromic pigment iya jure high zafin jiki na 230℃a cikin ɗan gajeren lokaci (kimanin minti 10), kuma ana iya amfani dashi don gyaran allura da kuma maganin zafin jiki.Koyaya, kwanciyar hankali na thermal na pigments masu canza launi ya bambanta a cikin launi.yanayi mai tasowa da yanayin achromatic, da kwanciyar hankali na farko ya fi na baya.Bugu da ƙari, lokacin da zafin jiki ya fi 80 ° C, kwayoyin halitta da ke kunshe da tsarin canza launin za su fara raguwa.Don haka, masu canza launi ya kamata su guje wa aiki na dogon lokaci a yanayin zafi sama da 75 ° C.
Ajiya na thermochromic pigments:
Ya kamata a adana wannan samfurin a cikin sanyi, bushe da yanayin duhu gaba ɗaya.Tun da kwanciyar hankali na launi mai canza launin launi a cikin yanayin haɓaka launi ya fi girma fiye da yadda yake a cikin yanayin achromatic, nau'in da ke da ƙananan canjin launi ya kamata a adana shi a cikin injin daskarewa.A ƙarƙashin sharuɗɗan da ke sama, aikin yawancin nau'ikan launuka masu canza launi ba su ragu sosai ba bayan shekaru 5 na ajiya.
Lokacin aikawa: Afrilu-08-2021