Iteyiphu yobushushu obuphezulu be-PTFE esetyenziswa kwizicelo zoqhagamshelwano lokutya kufuneka ihlale ngaphakathi kwemida yobushushu echaziweyo: ≤260°C ukuze isetyenziswe ngokuqhubekayo, ≤300°C kwiincopho ezimfutshane (imizuzu), kwaye ingaze ibe ngaphezu kwe-327°C (ukubola). I-FDA kunye ne-EU imigaqo ayicacisi umda wexesha jikelele - ubude boqhagamshelwano obukhuselekileyo buxhomekeke kwiqondo lokushisa kwaye kufuneka luqinisekiswe ngovavanyo lokufuduka olufanisa iimeko zangempela.

Ilaphu le-PTFE elinobushushu obuphezulu kunye nelaphu le-silicone zombini zisebenzisa ilaphu le-fiberglass njengesiseko kodwa ziyahluka kwizinto zokwaleka (i-PTFE resin vs irabha ye-silicone). I-PTFE igqwesile ekungabambeni, ukuxhathisa ukunxiba, kunye nokumelana neekhemikhali ukuya kuthi ga kwi-260°C. Ilaphu le-Silicone linika ukuguquguquka okuphezulu, ukugquma kombane, kunye nokumelana nomlilo (ukuya kuma-230 ° C). Khetha ngokusekelwe kukubaluleka kwakho.

Ilaphu le-PTFE lobushushu obuphezulu (i-PTFE inwebu yempahla) lukhetho lweprimiyamu yolwakhiwo oluqinileyo. Izinto eziluncedo ezingundoqo: iminyaka engama-30+ yobomi bangaphandle, indawo yokuzicoca (amanzi emvula ahlamba ubumdaka), ukuhanjiswa kokukhanya okuthambileyo (6-13%), ukukala komlilo kuDidi A, kunye namandla afana nentsimbi angaphantsi kwe-1.5 kg/m². Isetyenziswa kumabala emidlalo, kwizikhululo zeenqwelo moya, kunye nezakhiwo ezinomfanekiso kwihlabathi liphela.

Iteyiphu ye-PTFE yobushushu obuphezulu ifuna ukugcinwa okufanelekileyo ukugcina ukunamathela kwayo, ukuguquguquka, kunye nokukhulula ukusebenza. Iimfuno eziphambili zibandakanya ukulawulwa kweqondo lokushisa (10-30 ° C), umswakama ongaphantsi kwe-60%, ukuphepha ukukhanya, ukuhlukaniswa kweekhemikhali, ukubekwa ngokuthe nkqo, kunye nomoya. Landela ulawulo lwe-inventri ye-FIFO kwaye uhlole rhoqo.

Ukukhetha iteyiphu echanekileyo ye-PTFE yobushushu obuphezulu kwibhedi eshushu yomshicileli we-3D ifuna ukugxila kwizalathisi ezine eziphambili: ukumelana nobushushu (ukuya kuthi ga kwi-260 ° C +), i-fiberglass-reinforced substrate (0.18mm efanelekileyo), i-adhesive backing ye-silicone kunye nomgangatho ongaphezulu we-non-stick, kunye nobubanzi obufanelekileyo / ukunyamezela. Esi sikhokelo sikunceda ukuba uphephe ukulwa, intsalela, kunye nokusilela koshicilelo.

Ubushushu beglasi yokutshintsha (Tg) ye-silicone yokuncamathelisa i-adhesive yoxinzelelo ijikeleze -120 ° C - isezantsi kakhulu kune-adhesives ye-acrylic. Le Tg ye-ultra-low igcina i-PTFE i-tape ephezulu yobushushu eguquguqukayo kwaye inamathele nakwi--70 ° C, ikhusela ukuqhekeka kwe-brittle kunye nokuvumela ukubambelela okuthembekileyo kwizicelo ze-cryogenic.

Iteyiphu ye-PTFE yobushushu obuphezulu inokuqhekeka okanye iqhekeke phantsi kokugoba ngokuphindaphindiweyo kunye neemeko zokuvula. Eli nqaku lichaza indlela yokuthintela oku ngokukhetha okufanelekileyo kwe-substrate (ifiber yeglasi eqinisiweyo), ubukhulu obufanelekileyo (0.18mm njengomgangatho), ukhetho lwe-adhesive ye-silicone, kunye neendlela ezichanekileyo zokufakela.

Ilaphu le-PTFE elinobushushu obuphezulu libonelela ngokuxhathisa okukhethekileyo kweekhemikhali, ukumelana neeasidi ezomeleleyo, iialkali, izinyibilikisi eziphilayo, kunye neegesi ezidliwayo. Eli nqaku lichaza izinto zalo ezixhathisayo, imida (isinyithi esinyibilikisiweyo se-alkali, i-agent eqinile ye-fluorinating), kunye nezinto eziphambili ezifana nobushushu, ugxininiso, kunye noxinzelelo lomatshini.

Ukukhethwa kwephepha lokukhululwa okanye i-substrate yefilimu kunye ne-arhente yokukhulula ichaphazela ngokuthe ngqo ukuzinza kokugcinwa kunye nokusebenza kwe-peeling ye-PTFE ye-tape ephezulu yokushisa. Eli nqaku lithelekisa i-PET kunye ne-kraft substrates yephepha kunye ne-silicone vs.

Iiteyiphu ze-PTFE zobushushu obuphezulu zisetyenziselwa ukugquma kombane, kodwa iimeko ezikwi-frequency ephezulu kunye ne-high-voltage zibeka imingcipheko eyodwa: ukuqhawuka kombane, ukukhutshwa ngokuyinxenye, ukuguga kwe-thermal, ilahleko ye-high-frequency signal, kunye novakalelo lokusingqongileyo. Eli nqaku lichaza ingozi nganye kunye nendlela yokuphepha.