Ilaphu le-PTFE elinobushushu obuphezulu
Impendulo i-nuanced. Ulwakhiwo lwemolekyuli ye-PTFE inika ukugquma okugqwesileyo kulo lonke uluhlu lwayo lokusebenza, kodwa ngaphezulu kwe-260°C ixhokonxa ukuthotywa okungenakubuyiseka. Kwaye ngelixa amaqondo okushisa abandayo aphucula iimpawu zombane, enza ukuba i-coating brittle.
I-Aokai PTFE ivavanye iimpawu zokugquma kubushushu obugqithisileyo. Eli nqaku liqhekeza ukusebenza kwiindidi ezintathu: ukusebenza okuqhelekileyo (-180 ° C ukuya kwi-260 ° C), ukuphakama okuphezulu (> 260 ° C), kunye nokushisa okuphantsi (<0 ° C), kunye nedatha ephambili kwi-resistantivity, amandla e-dielectric, kunye neziphumo eziphathekayo.
Uluhlu lokuSebenza oluQhelekileyo: -180 °C ukuya kwi-260 °C - Ukufakwa kwe-Insulation ephezulu
Kulo mda, ilaphu lobushushu obuphezulu le-PTFE ligcina ukugqunyelelwa kombane okugqwesileyo kwaye okuzinzileyo - eyona nto iluncedo exhasa usetyenziso lwayo olubanzi lwemizi-mveliso.
1. Umthamo kunye nokuqina koMphezulu
Ubushushu
Ukuxhathisa uMqulu (Ω·cm)
Intsingiselo
I-Ambient (25°C)
10⊃1;⁷ – 10⊃1;⁸
Okugqwesileyo - phakathi kwezona zigqudu zibalaseleyo
200°C
10⊃1;⊃3; – 10⊃1;⁴
Isengaphezulu kakhulu kunezona zinto ziqhelekileyo
260°C
>10⊃1;⊃2; (qikelele)
Isasebenza kwizicelo ezininzi
I-Mechanism: Ukuchasana kwehla ngokulinganayo ngokunyuka kweqondo lokushisa ngenxa yokuba ubushushu obuphezulu buqinisa intshukumo ye-thermal ye-PTFE yamakhonkco eemolekyuli kwaye ikhawulezisa ukufuduka kwabathwali bokungcola. Nangona kunjalo, nakwi-200 ° C, i-PTFE igqwesa uninzi lweeplastiki zobunjineli kwiqondo lokushisa.
Qaphela ukuxhathisa umphezulu: Ukumelana nomphezulu kuchaphazeleka kakhulu kukufuma kwe-ambient. I-PTFE phantse ayiyo-hygroscopic; Ukufuma komphezulu kuba ngumphunga kumaqondo obushushu aphakamileyo, kuzisa ukugquma komphezulu okuzinzile kunaphantsi kweemeko zegumbi lokufuma okuphezulu.
2. Amandla eDielectric (Ukuqhekeka kombane)
Yehla njengoko ubushushu bunyuka. Intshukumo ye-thermal ye-molecular aggravated yenza ukuba izinto zisengozini ngakumbi kumonakalo wombane.
Ukusuka kwiqondo lobushushu begumbi ukuya kwi-200 ° C, amandla e-dielectric yexesha elifutshane awela malunga ne- 20% -40% .
Nangona kunjalo, ilaphu leprimiyamu elimalunga ne-0.1 mm ubukhulu lisanokumelana neekhilovolthi ezininzi (okanye amashumi eekilovolthi kumabanga atyebileyo) kuma-200°C – amandla ogqume owomeleleyo agciniwe.
3. I-Dielectric Constant & Factor Dissipation - i-Fluctuation encinci
Ipropati
Ixabiso (-100°C ukuya ku-250°C)
Uzinzo
Idielectric constant (Dk)
2.0 – 2.1
Phantse flat
Umba wokulahla (tan δ)
0.0002 - 0.001
Kakhulu-phantsi
Kutheni le nto ibalulekile: Isakhiwo semolekyuli se-PTFE esilingeneyo kunye ne-ultra-low polarization isiqinisekiso esizinzileyo sokuhanjiswa komqondiso kunye nokuveliswa kobushushu obuphantsi kakhulu phantsi kwe-frequency ephezulu kunye nenkonzo yobushushu obuphezulu. Oku kufaneleka i-PTFE njengento efanelekileyo yokugquma i-high-frequency insulating ye-RF kunye ne-microwave applications.
Ilaphu le- Aokai PTFE lobushushu obuphezulu licaciswa ngabathengi be-high-frequency transformer insulation insulation ngenxa yokuqina kwayo Dk (2.05±0.05) kunye ne-ultra-low tanδ (0.0002-0.0005) ngapha kwe -50°C ukuya kwi-200°C uluhlu. Sinikezela ngeengxelo zovavanyo lwepropathi ye-dielectric xa uceliwe.
Uluhlu lobushushu obuphezulu obugqithisileyo: Ngaphezu kwe-260 ° C - Ukuthotywa okungenakuBuyiswa
Ukodlula ubushushu benkonzo evumelekileyo yexesha elide ye-PTFE ibangela ukuwohloka komzimba kunye neekhemikhali okungenakuguquleka – hayi ukuguquguquka kwepropathi.
Uluhlu lobushushu
Material State
Ubume beInsulation
PTFE ukutyabeka ithambe; amandla oomatshini alahleka kakhulu. Uxinzelelo lwangaphandle okanye umthwalo wombane ngokulula ubangela uguquko olugqumayo kunye nokugqobhoza → ukusilela okudityanisiweyo koomatshini nombane nokuba iiparamitha ezingundoqo zihlala zamkelekile.
Ukungathembeki - umngcipheko wokugqobhoza
Ngaphezulu kwe-327°C
Ifikelela kwindawo ye-PTFE's crystalline yokunyibilika. I-PTFE eSolid ijika ibe yi-high-elastic okanye i-gel state, ilahlekelwe yintembeko yesakhiwo
Phantse asilele ngokupheleleyo
Ngaphezu kwama-400°C
Ukubola okumandla okushushu kukhupha umkhondo weegesi eziyingozi. I-Carbonization kunye neepaseji eziqhubayo zenza ngaphakathi kwemathiriyeli → ukuxhathisa umthamo kwehla ngokukhawuleza, ukugquma kutshatyalaliswe ngokusisigxina
Ukungaphumeleli ngokupheleleyo - iifom zeendlela zokuqhuba
Isilumkiso esibalulekileyo: Nangona isiseko selaphu le-fiberglass imelana ne-550-750 ° C ngaphambi kokuba ithambe, i-fiberglass engafakwanga ifunxa ngokulula ukufuma emva kokusilela kokugquma kwe-PTFE kwaye ayikwazi ngokuzimeleyo ukugquma i-voltage ephezulu.
Ipropati
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Amandla e-Dielectric
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Uluhlu lobushushu
Ingcebiso
Ukungaphumeleli okusisigxina - i-carbonization idala iindlela zokuqhuba
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Once overheated beyond 260°C, insulation failure initiates from mechanical softening and deformation, eventually evolving into complete electrical breakdown. Above 400°C, carbonization creates permanent conductive paths. Ngaphantsi kwe-0 ° C, iipropati zombane ziyaphucuka, kodwa ukonakala koomatshini kunobungozi bokuqhekeka kwengubo.
Ngaba ufuna ilaphu le-PTFE lobushushu obuphezulu elineempawu zokugquma eziqinisekisiweyo kuluhlu lwakho lobushushu? Aokai PTFE provides full dielectric test data from -70°C to 260°C. Contact us with your operating temperature, voltage, and frequency requirements.
I-Jiangsu Aokai yeZixhobo eziNtsha zeTekhnoloji Co., Ltd.
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