aikace-aikace

PE busa gyare-gyaren fim samar da tsari

Hopper ciyar - abu plasticizing extrusion - hurawa gogayya - iska zobe sanyaya - herring splint - gogayya abin nadi gogayya - corona magani - fim winding, amma yana da daraja nuna cewa wasan kwaikwayon na hura fim yana da babban dangantaka da samar da sigogi sigogi, sabili da haka. , a cikin aikin busa fim, dole ne a karfafa ikon sarrafa sigogi na tsari, daidaitaccen aiki na tsari, don tabbatar da samar da santsi, Kuma samun samfuran fina-finai masu inganci.

Sarrafawa da manyan abubuwan da ke cikin fim ɗin noma

Fim ɗin noma an yi shi da babban polymer azaman babban jiki, yana ƙara adadin abubuwan da suka dace na kayan aiki, bayan sarrafa gyare-gyaren busa.Abubuwan da suka dace don fim ɗin da aka zubar shine polyolefin, irin su polyethylene (PE), polyvinyl chloride (PVC), ethylene - vinyl acetate copolymer (EVA) da sauran thermoplastics.

Thermoplastics ba su da wurin narkewa kamar ƙananan mahadi na ƙwayoyin cuta, amma suna narke a wani tazarar zafin jiki, a cikin abin da suke viscoelastic.Yin amfani da wannan kadarorin, ana iya mai da shi cikin yanayin narkewa mai kama da sukarin ɗanɗano, busa kumfa, sanyaya, warkarwa, siffatawa, jan hankali don samun takamaiman girman fim ɗin da aka zubar.

Rarraba fim din noma

1, Fim ɗin juriya na tsufa (fim ɗin zubar da tsawon rai).Ƙara ƴan dubbai na ingantacciyar mai daidaita haske zuwa babban ɗanyen abu.Fim ɗin da aka zubar a cikin yanayin oxygen ta hanyar haske (musamman ultraviolet), za a sami canje-canje iri-iri, irin su canza launi, fashewar ƙasa, lalacewar injiniya.Rayuwar sabis na fim ɗin zubar da polyolefin na yau da kullun shine kawai 4 zuwa watanni 5, yayin da yawan amfanin gona na hunturu na yau da kullun yana buƙatar rayuwar fim ɗin zubar shine watanni 9 zuwa 10.Ci gaba da rayuwar sabis na yankuna ko nau'in amfanin gona na kowane mutum yana buƙatar fim ɗin da aka zubar ya zama fiye da shekaru 2, kuma rayuwar fim ɗin fure da fim ɗin ginseng ya fi shekaru 3.Ana iya cimma manufar da ke sama ta hanyar ƙara 'yan dubbai na kyakkyawan ma'aunin daidaitawar haske don shirya fim ɗin da aka zubar da tsawon rai.

2, ba a sauke fim ba.Fim ɗin da aka zubar wanda aka ƙara wasu abubuwan surfactants zuwa babban kayan don kada saman na ciki na fim ɗin baya bayyana (ko da wuya ya bayyana na ɗan lokaci) ɗigon ruwa yayin amfani da sutura.A cikin hunturu sanyi, yawan zafin jiki a cikin greenhouse ya fi na waje, kuma zafi yana da girma, greenhouse yana kama da fim mai girma da kofin ruwan zafi.Tushen ruwa yana da sauƙi don isa wurin raɓa bayan haɗuwa da fim ɗin, samar da ɗigon ruwa a saman ciki na fim ɗin.Digon ruwa yana kama da ruwan tabarau, lokacin da hasken daga waje zuwa zubar, saman ruwa zai sa hasken refraction sabon abu, hasken ba zai iya shiga cikin zubar ba, yana rage yawan watsa haske na fim ɗin da aka zubar, ba mai tasiri ba. zuwa photosynthesis na amfanin gona.Idan an mayar da haske ta hanyar "ruwan tabarau" kuma ya buga shuka, zai ƙone shuka kuma ya cutar da shi.Manyan digon ruwa akan amfanin gona na iya sa su rube.Bayan an ƙara wasu abubuwan da ke sama, an canza fuskar fim ɗin ba tare da drip ba zuwa hydrophobic zuwa hydrophilic, kuma ɗigon ruwa za su samar da fim ɗin ruwa mai haske tare da saman ciki na fim ɗin da aka zubar, kuma hasken watsawar fim din ba zai yiwu ba. abin ya shafa.

3, babu digo, aikin kawar da hazo ya zubar da fim.Fluoride da silicon antifogging an ƙara su bisa tushen fim ɗin da ba ya ɗigo.Winter hasken rana greenhouse ta yin amfani da cikakken fim cover, sau da yawa samar da nauyi hazo, greenhouse haske tsanani rage, shafi ci gaban amfanin gona, amma kuma sauki sa cuta.Dangane da fim ɗin ba tare da drip ba, ƙara fluorine da wakili na siliki, don haka tururin ruwa a cikin yanayin da ke cikin zubar zai iya yin sauri da sauri a saman fim ɗin da aka zubar, kuma a ƙarƙashin aikin drip-free. wakili, da ruwa droplets tare da surface na greenhouse film hanzari m yada yada da gudana zuwa ƙasa, wannan shi ne drip free, fogging aikin zubar da fim.

4, Fim mai haskaka haske (fim ɗin juyawa haske).Ana ƙara wakili na juyawa na gani zuwa babban kayan albarkatun ƙasa.A cikin 'yan shekarun nan, bisa ga ka'idar ilimin halittu na haske, ana amfani da fasahar canza makamashin hasken rana zuwa fim ɗin noma, wato, ana ƙara mai canza haske zuwa fim ɗin da aka zubar, makamashin hasken rana a cikin photosynthesis na shuka yana da ƙananan sosai zuwa ja. orange haske m shuka girma, inganta photosynthesis na shuke-shuke a cikin filastik zubar fim, inganta amfani kudi na haske makamashi na filastik greenhouse, domin inganta ingancin shuke-shuke.Irin su inganta zaƙi na 'ya'yan itace, farkon balaga, haɓaka samarwa, ƙara yawan kudin shiga, ƙawata launin furanni da bishiyoyi.

5, babban fim mai rufe fuska.Yin amfani da watsawar haske mai girma, tasirin toshe infrared na babban polymer kuma ƙara abin sha na infrared, wanda aka yi da fim ɗin rufin zafin jiki.Babban fim ɗin rufewa zai iya ɗaukar zafi mai haske kamar yadda zai yiwu a lokacin rana kuma ya rage zafi mai zafi kamar yadda zai yiwu a cikin dare.A cikin rana, hasken rana ya fi haskakawa a cikin fim ɗin tare da hangen nesa na haske na 0.3 ~ 0.8 micron, wanda ke ƙara yawan zafin jiki a cikin greenhouse kuma yana ɗaukar zafi mai yawa a cikin ƙasa.Da daddare, akwai bambancin zafin jiki tsakanin ciki da waje, kuma ƙasa tana haskaka zafi a cikin nau'in hasken infrared tare da tsawon 7-10 microns.Saboda haka, ta yin amfani da babban polymer tare da babban watsawa na bayyane haske da kuma mai kyau infrared blocking sakamako, da kuma ƙara infrared absorbent, mutane sun ɓullo da high zafin jiki riƙe fim.A halin yanzu, an sami babban ci gaba a aikace-aikace na nano-insulation kayan a kan membrane.

6, Multifunctional membrane.Dangane da rarrabuwar hanyar sarrafawa, akwai fim ɗin Layer guda ɗaya da fim ɗin haɗin gwiwar haɗin gwiwar multilayer, na ƙarshe shine fim ɗin multifunctional.Alal misali, 0.1mm fim za a iya hada da 3 yadudduka, da muhimmancinsa shi ne, ta hanyar ƙara mafi m da kuma tattalin arziki Additives a cikin kowane Layer, ba da zubar da fim da ake bukata da yawa ayyuka.Misali, ƙara ƙarin digo da abubuwan hazo a tsakiyar Layer, kuma ƙara ƙarin mai daidaita haske a cikin Layer na waje.

7, fim mai launi.Ana samar da shi bisa ga ka'idar gani.A ƙarƙashin murfin fim ɗin ja, tsire-tsire na auduga ya girma da kyau, mai tushe ya kasance mai kauri, tushen ya haɓaka kuma yawan rayuwa ya yi yawa.Dasa karas da kabeji tare da fim ɗin noma na rawaya na iya haɓaka haɓakarsu, kuma rufe kokwamba na iya ƙara yawan amfanin ƙasa da fiye da 50%.Yin amfani da fim ɗin noma mai ruwan hoda na iya haɓaka yawan amfanin ƙasa na eggplant, leek da abarba;Strawberry da ke ƙarƙashin rufin shuɗi suna ba da 'ya'ya masu girma da yawa.Fa'idodin fim ɗin launi a cikin haɓaka samar da amfanin gona, haɓaka yawan amfanin ƙasa da haɓaka inganci suna nuna fa'idodin aikace-aikacen.

8. Lalacewar membrane.An haɓaka shi don "fararen gurɓataccen gurɓataccen abu" wanda ya haifar da fim ɗin noma na sharar gida.Fim ɗin da ya rage na fim ɗin da aka lalata zai iya lalata kansa a cikin ɗan gajeren lokaci a ƙarƙashin rinjayar yanayi daban-daban.Ana iya raba fina-finan lalata zuwa nau'i uku: photodegradation, biodegradation da photobiodegradation.Fim ɗin e starch da fim ɗin grass fiber da ake haɓakawa a ƙasarmu na cikin fina-finan lalata.An ƙirƙira samfuran kuma an saka su cikin ƙaramin tsari.