Zaune na Haliyar Ruwa kan Aiki na Sheet na Polycarbonate

Zagin Harshen da Range na Amfani da Harshen Kwayoyin Polycarbonate

Harshen Taimakon Gurji (HDT) da Role Dake Takauba a Kwayar Polycarbonate

Za a iya hada shekara na polycarbonate ta hanyar tsawon kwallo (HDT) a wadi 137 zuwa 140 daraja selsias, idan aka kwatanta ta hanyar yadda aka ambata (Inplex LLC 2023). Babu sha'awa, wannan adadin yana nuna mana yadda yake sauke har abubuwan da keke ya fara daina ko kwaya a makaman sarraf. Ga alamar da suka ƙasa ko sarari na kasuwanci da dole ne su yi amfani da wurin da ke cikin wurin mai tsawon, sanin HDT wannan yana da mahimmanci girma. Kama da galamai masu zafi masu amfani, polycarbonate yana da kyau karfi a kauye da canzawa mai damuwar yanayi. Ba za ta kare ko ta kawo sai bayan tallafawa kan tallace-tallace, wanda yana sa ta zama abokin amfani mai kyau ga manyan ayyukan tattalin arzikin.

Iyakar Tsawon Amfani na Tsawon Tsawon Polycarbonate (-40°C zuwa 135°C)

Fuskar polycarbonate suna aiki kyau a tsawon shafukan da ke tsakanin cikakken -40 daraja selsias zuwa 135 daraja selsias. Bayani suna nuna cewa suna kama da yanzu gaba daya da 85% na saukin tensile, kamar yadda aka fada a wasikan da UNQPC ya buga a shekara ta 2023, kodayake yake sanyi kusa da -40°C. Sai dai, sai an fara tonkawa kadan kadan lokacin da yake yafi 100°C. Aƙari masu amfani duk suka ce waɗansu cewa tushen da aka kai tsaye akan 135°C bai zama abin damu ba, amma idan aka kama da su a harshe mai zurfi mai dauke da 130°C, zai kama da zinarewa mai yawa. Don haka waɗannan kayan aikin suna iya kama da halayen wuyar, muna ga su a wadansu ayyukan aikin gida a kasa mai sanyi, zuwa kuma babban kayan aikin mota inda zaune kayan aikin suna canzawa kuskuren, kuma baza a buƙata ayyukan gwajin kayan aikin.

Tasirin shanu da sanyi kan saukin kayan aikin

• Shanu (>100°C) : Ya kama da tonkawa na flexural modulus ne na 18–22% kuma ya kama da kara kewaye
• Sanyi (-40°C) : Sanya kama da tasowa ta hanyar 30% yayin da aka tsaya da zurfin juzu'i
  Wadannan alamar sun daga cikin tsari na molekularin polycarbonate, wacce ta kara canzawa zuwa babban girma zuwa gabata -100°C.

Zurfi-Ta'abon Aiki na Gini na Polycarbonate

Alakari mai zurfi (≥6mm) yana ba da tasowa na abubuwa 15–20% saboda yawa da zurfi maiƙarƙashin zurfinsa (0.19 W/m·K). Alakari na multiwall suna amfani da kuro bayan layi don sanya saukin kula da shukuma ta hanyar 40% dibu da alakari mai gini, waɗanda suke iya amfani da su a wuraren da ke da sharuɗɗu.

Canje-canje na Alamar Jarumi a Alakarin Polycarbonate Lokacin da Yake Kasa da Zurfi

Tasowar zurfi da sanyi akan Flexibility da Rigidity na Polycarbonate

Kada materials sun hadu da zuwa-tsanyawa, yawan ma'auni na mekanikal su canzawa ne mai zurfi. Misali, a kusan 135 daraja Silisiyus, abin da aka fi saba elongation at break ya dinki kusan 70% daga cikin abin da muka ga a tsawon shafin zuwa-tsanyawa, wato abin da ke nufi cewa material ya zama kyau kasancewa ba ta hanyoyin daidai ba kamar yadda aka fada shi ta hanyar bincike da aka buga ta hanyar Song da sauyinsa a shekarar 2023. A wani mataki, lokacin da abubuwan za su zama satsine a kusan minus 20 daraja Silisiyus, waɗannan materials masu yaukuna su zama matattara kusan 30%, amma har ma su yi aiki daidai a juyawa. Wannan an farko shi a wasu jerin gwaji-gwajen kan thermoplastic polymers kamar yadda aka fara ta hanyar takimta Hafad a shekarar 2021. Gaskiya cewa waɗannan ma'auni su rufe da su rufe a cikin taki mai zurfi daga minus 40 zuwa 135 daraja yana nuna yadda kyau polycarbonate ke iya amfani da shi a alakar abubuwan da suka dace.

Ma'aurin Tsabo-Tsabo Mai Kyakkyawa a Ma'auni Mai Kyakkyawa na Polycarbonate

Zamuwa zuwa sa hannun yaki ya haifar da canjin kimiai na tsawon lokaci a cikin polycarbonate. Bincike yana nuna tushen 25% na tasowa zuwa sa gafara bayan koma biyar a 90°C. Wannan kuskuren sabada ne daga cikin cutar hankali da kama da ruwan baya, musamman a alamar wajen kasa. Don dawo da wannan, masu amfani suna amfani da abubuwan da suka tsayya wajen yanke da yankin zane-zane don karin yawan shekarun amfani.

Entalpi Relaxation da yadda yake da alamar tasowa

Entalpi relaxation yana bayyana cewa yake haifar da canje-canjen tasowa ta hanyar lokaci yayin zamuwar hannun yaki. Hakanan yanzu hankalin polimeri suna fuskantar zuwa iyaka kasa da tekan kasuwanci (~147°C), modulus na Young yana tare da 15–20% bayan shashan wata. Wannan canje-canjen tsarin yanzu yana takawa kan tsarin girma ta tsawon lokaci kuma yana bukatar amincewa akan tasowar waje a cikin shirye-shiryen inginiya.

Canjin Ductile-Brittle a Polycarbonate yayin sanyaya

Lokacin da yankunan yanayi sun taushe neƙas 30 daraja Silisiyus, kuma polycarbonate yana canza canje-canja mai mahimmanci inda yana zama masu hankali zuwa ga cutane, ko wani shidda irin gabaɗayan normal. Koyaushe, to wala ce yana taka muhimmiyar kyau labarin dawo-dawon, tare da buƙatar nuna game da shekaru 60 joules per square meter a -40°C, wacce ke farfaru babban kyau karaga yana iya karyawa, amma yadda muka kirkirar haɓakokin yana ban sha'awa idan muka so mu kula da waɗannan alamar stress su kasance. Don haka a wuraren da suka fi sanyawa, masu shigarwa sabon goyon sarari, masu tsawon 12mm ko fiye, kuma su haɗa da waɗannan haɓakokin edge flexible da su ba da damar yin aiki ba tare da kashewa. Muna ganin wannan aiki yana aiki gyara sosai a cikin yamma kan koma idanin sadarwa suka fi girma.

Akwai Hanya, Daidaitowa da Farkotar Yanki

Nunin Akwai Hanya a Polycarbonate Labarin Lokaci

Kada polycarbonate ya kiyaye, yana tsawon aikin da ke canza tsakarta abubuwan da ke jijiyar. Wannan kiyaye yana nuna canje-canjen da ma'ajanin alama sunke (ΔHr) da wani abu mai suna fictive temperature (Tf). Bincike da ke amfani da calorimetry yana nuna cewa waɗannan zufunfuna amorphous na jijiyar yana kauyawa har ma'ajin equilibrium, wanda yana tashi ne akan yadda aka rage shi zuwa baya (kamar yadda aka rubuta a Nature 2023). Koyaushe polycarbonate yana samun kama da 85% na saukin gaba daya bayan shekaru goma masu zarar a tsawon girma (kamar 23 daraja Celsius), amma abubuwan canja lokacin da aka yiwa sama. Alabaiyar sama yana kara sabbin kiyaye saboda molecules suna raguwa da doro-bishe kuma babu girman zaman kansu a sarari, wanda yana kara kiyasawa.

Canjin Tsakawa da Taimakawa A Daidaitaccen Zarar

Dawo da nemi daga -40 daraja selsiyas zuwa 100 daraja yana baƙin abubuwan tattunawa tsakartaccen yanayi a karkashin lokaci, wanda ya kare shigarwar wani yanki a cikinta ne mai gama 2.3% lokacin da aka yi rawarin ma'aunin zamantakewa. Don tafi da wannan batun, masu siyan abubuwa ke amfani da alkaruwa mai mahimmancin UV kuma zaɓi kayayyakin da ke tafi da anaddon cumada. Lokacin da muka duba na'urorin rawar da aka yi, muna ganin cewa shifidi mai girman 6 milimita yana nuna kawai 0.08 milimita kusa da mita game da canjin girma bayan karfe a cikin wata rabin shekara ta hanyar canje-canjen yanayin zama. Wannan bincike yana nufi cewa waɗannan abubuwa suna aiki daidai har ma a wuraren da canje-canjen yanayin zama ke iya ragewa ko karyawa da +50 daraja selsiyas.

Canje-Canjen Yanayin Zama da Canjiwa Tsakanin Girman Alkaruwar Polycarbonate

Polycarbonate yana da coefficient na thermal expansion waɗanda suna tsakanin kusan 65 zuwa 70 kawai 10 zuwa wani ma'anar minus sixth per degree Celsius, wanne manufa ce ta dole a sarrafa shi da sauri a lokuta da temperature suna canzawa sosai. Lokacin da temperature ta koma gabata dari minus 40, waɗannan panel suna kama kusan 0.3% kowace 10 degree drop. A wani matakin, suna iya faruwa kusan 1.2% lokacin da suka heat shi zuwa 135 degrees Celsius. Daga abin da muka ga a cikin amfani, masu iko mai kyau masu iyaka generally suna dauke da stability na dimension a cikin plus ko minus 1.5 millimeters per meter a karkashin shekara. Bayan haka, multiwall sheets suna faruwa kusan 18 percent kaƙari karfi duk da gaskiya a kan irin su saboda waɗannan gagayyin bayamun sama na asali suna taimakawa wajen gwadawa matsala a lokacin da temperature suna canzawa.

Iyaka na Gudummawa da Nishadi na Safe kasancewar a lokacin Thermal

Matsalolin Temperature a Polycarbonate Weathering da UV Resistance

Polycarbonate yana da alhakin zuwa ga 90% UV bayan shekara goma a cikin baki mai zurfi, amma alhakawa ta hankali taya nisa. Zuwarta bisa 120°C taya stabilitar UV ne bi 15–20% bayan wasu shekaru (Rashin Ayyukan Materi 2023). Amma, wani nau'i na polycarbonate yana da alhaki zuwa ga ≥85% kaiwar faraƙa bayan 1,000 sa’a ta hanyar gwaji game da zurfi (-40°C zuwa 125°C) ba tare da canzawa zuwa yaɗu ba.

Karin Polycarbonate Bayan Gwajin Zurfi

Nau'ikan da ke da alamar biyu suna baƙin karin inganci, suna da alhaki zuwa ga 94% sabon zaman kansu bayan 5,000 sa’a a 85°C kuma 85% zafi na ruwa (Abubuwan Kimiyya Masu Ilimi 2024). Duk gurbin ilimi sun haɗa da:

Paramita na Gwaji	Darajar Tsakiya	Standardin Aiki
Cm zuwa Cm na Zurfi Mai Sauye	-50°C zuwa 145°C (-58°F zuwa 293°F)	ASTM D638
Alhakawa zuwa Gwagwarmayar Zurfi	500 tsaron (−40°C – 120°C)	ISO 22088-3

Iƙar kaiwar shan ruwa na Polycarbonate Sheets a tsawon zafi

Polycarbonate yana samun bayani na UL 94 V-0, yana kare da kanka cikin 15 seconds. A 450°C (842°F), yana barin gurji baki ya riga ya kalli kuma yana tsaba abubuwan tsibo don 30–90 minti depending on thickness (Fire Safety Journal 2023). Kada ka yi tushen zuwa zuwa saufi, yana fitar da fumes 80% karanci, wanda ke taimakawa wajen kari.

Hanyoyin Tattara Amintammi don Zaɓi na Polycarbonate Sheets Saboda Agwagwa

Yin Haɗa Cifin Polycarbonate zuwa Zunan Tsawon Agwagwa

Zabi Polycarbonate sheets wanda aka saka hankali kan agwagwa ta yanki. Wadannan nau'ikan da aka oda su don -40°C zuwa 135°C (Polycarbonate Council 2024) suna aiki kyautu a damaɗin 98% na agwagwa na duniya. A yankuna mai zurfii, zaɓi nau'ikan da ke tsada UV wadanda suka da tebura mai 2.5–3.2 mm don reduce warping. Don sharo mai zafi, amfani da formulations da ke tsada tasowa kuma ke bada 92% na flexibility na room temperature.

Shawararrin Nayyasa don Canjin Karbari na Thermal a Cikin Saukannin Polycarbonate

Koron yin amfani da kayan dabi’a na polycarbonate, mun gode cewa su karba da kama zuwa 0.065 mm per mita kowace daraja Celsius na canjiyar haliyar hawan sama. Wata dacewa mai kyau shine barin kama da 32.5 mm tsaki tsakanin abubuwan da ke shaida akan layi mai mita 10 lokacin da kuke dealing with canjiyar hawan sama na shekara ta kama da darajar 50. Turaisha tana ba da masallaci guda karena hawan sama zaka iya canza ne daga 25 zuwa 40 daraja a tsakanin rana da dare. Don haka wakilan mai sauƙi suna son amfani da abubuwan da ke cimma (compression fit fasteners) dibu da abubuwan da ke shaida wayarwa (rigid clamps) a wadannan yankuna. Ga malumfin kungiyar kasuwanci, bin shawararrin waɗannan zai kuma kama da masallacin hawan sama takamawa uku kafin biyu dibu da yadda aka hada wayarwa, to amma sakamako dole ne iya canzawa bisa zuwa ma'auri na yanki da kwaliti na kayan dabi'a.

Tare da iya haɗawa tsarin sheet tare da buƙatar yanayi kuma hada da hanyar rage yin da za a iya canzawa, masu nuna suna kiyaye alhali mai zurfi na zurfinsa a cikin amfani da polycarbonate.

Sashen Tambayoyi

Shin yake temperature na zazzabi na polycarbonate sheets?

Polycarbonate sheets suna da heat deflection temperature (HDT) karshen 137 zuwa 140 daraja Celsius, wanda ya nuna temperature kan odayi material baya fara zuzzuwa nege.

Shin polycarbonate sheets za su iya tafiyya temperatures mai zurfi?

Ee, polycarbonate sheets za su iya kwatance temperatures daga -40°C zuwa 135°C, waɗanda suka haɗa da alamaron yanayi masu iyaka kamar alamom yanayin sanya kuma cikin waggon gida inda canje-canje na temperature ke faruwa daya-da-kyun.

Yaushe temperature ta ke iya tasowa tsaro na mechanical na polycarbonate?

Temperatures mai zurfi suna nema flexural modulus kuma nuna ductility, yayin da temperatures mai ƙananan suna ninka tasowa ga dana kafin yin amfani da stabiliyar girma.

Shin polycarbonate panels masu girma babba suna ba da alhali mai zurfi?

E, alaƙa mai girma suna ba da kama'iin gaskiya sosai saboda yawa da kuma kama'iin hanyar wuyar hana. Alakari na multiwall suna ƙara inginiyarewa ta hanyar amfani da shigarwar gudu a tsakanin alaƙa.

Yaushe ya ke iya kawar da nishadi na polycarbonate?

Kaiwad dudun abubuwan da ke cinyawa suna haifar da canjin molekular mai tswece, wanda ya kawo zuwa mayar da kama'yar tafiyya. Masu amfani da jerin additivuna da ma'aikat tallafawa suna amfani da su don kara yawan shekaru da za a iya amfani da shi.