I-Sintering linyathelo elibalulekileyo apho amasuntswana e-PTFE anyibilika, aqukuqela, kwaye adibanise kwifilimu eqhubekayo, eshinyeneyo edibanisa i-fiberglass substrate. Ukuba ixesha lokubamba lifutshane kakhulu, i-coating ihlala i-porous kwaye ibuthathaka. Ukuba ixesha elide kakhulu, i-PTFE ithoba, ikhupha iigesi ezinetyhefu kwaye ijike ibe brittle.
Ipharamitha ephambili ibambe ixesha - ubude emva kokuba ubuninzi bokugquma bufikelele kwiqondo lokushisa lokutshisa (ngokuqhelekileyo i-370-400 ° C). Eli asiloxesha nje iziko likwiqondo lobushushu; lixesha lokuba ilaphu ngokwalo lingaphezulu kwendawo yokunyibilika.
I-Aokai PTFE ilungiselele iiparamitha ze-sintering kwimigca emininzi yemveliso. Esi sikhokelo sigubungela iimfuno zexesha lokubamba kwiintlobo ezahlukeneyo zesithando somlilo, izinto eziphambili ezichaphazelayo, kunye neziphene ezivela kwixesha elingafanelekanga.
Imigaqo eSisiseko – Kuthetha ukuthini 'Ukubamba ixesha' Ngokwenene
1. Injongo engundoqo
Ukuvumela amasuntswana e-PTFE ukuba anyibilike ngokupheleleyo, aqukuqele, kwaye adibanise ngaphezu kwendawo yokunyibilika (malunga ne- 327 ° C ), yenze ifilimu eqhubekayo kunye neshinyeneyo efezekisa i-tight mechanical interlocking kunye ne-fiberglass substrate.
2. Umahluko obalulekileyo
Ukubamba ixesha kubhekiselele kwixesha elizinzileyo emva kokuba ubuninzi bokugquma bufikelele kwiqondo lobushushu le-sintering (ngokuqhelekileyo i-370-400 ° C), kunokuba nje ixesha lobushushu beziko lihlala lingatshintshi.
Kubalulekile ukuqinisekisa ukuba ubukhulu obugcweleyo belaphu le-fiberglass (kubandakanywa nentlaka evaleleke phakathi kweenyanda zefiber yangaphakathi) ifikelela kubushushu obunyibilikayo kwaye ibambe ixesha elaneleyo. Ubushushu bomphezulu bubodwa abanelanga - iileya zangaphakathi kufuneka zinyibilike.
Uluhlu lweeReferensi kwiiNkqubo eziQhelekileyo
1. Isithando somlilo esiqhubekayo
Ukumiselwa kobushushu besithando somlilo: Ukufudumeza indawo ezininzi kunye nendawo yobushushu obuphezulu obusetelwe kwi- 380-400 ° C (ukuya kuthi ga kwi-410 ° C kwimiqulu ethile eyenziwe ngokwezifiso).
Ixesha elisebenzayo lokuhlala (ixesha lokubamba) kwindawo yobushushu obuphezulu:
Ukutyeba kwelaphu |
Ixesha elicetyiswayo lokubamba |
Ilaphu elibhityileyo (0.08–0.15 mm) |
30 - 90 imizuzwana |
Ilaphu eliphakathi (0.15–0.30 mm) |
90 - 180 imizuzwana (1.5 - 3 imiz) |
Ilaphu elishinyeneyo elinzima (0.30–0.50 mm+) |
3 – 5 imizuzu okanye ngaphezulu |
Ulungelelwaniso olusebenzayo: Isantya somgca weTune ngokusekelwe kubude besithando somlilo - ukunciphisa isantya sokuhamba ngelaphu ukwandisa ixesha lokuhlala lobushushu obuphezulu.
2. Ibhetshi (uhlobo lwebhokisi) isithando somlilo
Bamba ubushushu obungaguqukiyo kwi- 380-390 ° C emva kokufudumeza:
Uhlobo lwezinto eziphathekayo |
Ixesha elicetyiswayo lokubamba |
Ilaphu le-fiberglass ene-coated enye |
Imizuzu emi-5 ukuya kweli-15 (ixesha ukusuka xa umphezulu welaphu ubetha ubushushu obujoliswe kuko) |
Izinto ezininzi ezifakwe kwi-multi-impregnated okanye i-laminated |
I-15 - 30 imizuzu (ukuqinisekisa ubushushu obufanayo bangaphakathi kunye nangaphezulu) |
Isikhumbuzo: Iziko lebhokisi linengxaki yokusasazwa kobushushu obungalinganiyo. Umoya ojikelezayo wesantya esiphezulu uyafuneka, kwaye ixesha lokubamba liya kwandiswa ngokufanelekileyo ukuze kugwenywe ukuntywila ngaphantsi kweeleya zangaphakathi.
Imiba enguNdoqo yokumisela ixesha lokubamba
Izinto ezintlanu eziphambili ziyasebenzisana ukumisela elona xesha lifanelekileyo lokubamba kuyo nayiphi na imveliso ethile.
1. Ubukhulu belaphu le-Fiberglass kunye nobunzima
Amalaphu atyebileyo, anzima kakhulu abonisa ukungahambi kakuhle kwe-thermal kwaye afuna ixesha elide lokubamba ubushushu bungene embindini.
2. Iipasile zokugquma kunye nokulayishwa kwe-PTFE
Izaleko ezininzi zokugquma zenza iifilimu ezishinyeneyo zeresin ezifuna ukufudumeza okwandisiweyo ukuze kunyibilike ngokupheleleyo umaleko ongezantsi. Iingubo ezinqabileyo zodwa zivumela ukubamba ixesha elifutshane.
3. PTFE ibakala emulsion
Ii-emulsions ze-PTFE ezicocekileyo- zifuna amaqondo obushushu aphezulu kunye nexesha elaneleyo lokuhlala
Imixube elungisiweyo (ixutywe nePFA okanye iFEP) - bonisa ukuhamba okunyibilikayo okuphezulu kunye nemvume yokunciphisa ixesha lokubamba
4. Ubushushu be-Sintering
Amaqondo obushushu aphezulu aphezulu (umzekelo, i-400 ° C) - nciphisa ixesha elifunekayo lokubamba
Amaqondo obushushu akufutshane nomlinganiselo osezantsi (370°C) – afuna ukufudumeza ixesha elide
I- 380-390 ° C yefestile ilinganisa ukusebenza kakuhle kwemveliso kunye nomngcipheko wokuthotywa kwe-PTFE
5. Uyilo lwesithando somlilo kunye nesantya somoya oshushu
Amaziko anesantya esiphezulu sokujikeleza komoya oshushu okanye ukungena kwe-infrared - ukuhanjiswa kobushushu okusebenzayo, ixesha elifutshane lokubamba
Amaziko axhomekeke kuphela ekufudumezeni okukhazimlayo -ixesha elongeziweyo lokuhlala liyafuneka
Iziphene eziBangwe kukuBamba ixesha elingafanelekanga
1. Ixesha elingonelanga lokubamba (under-sintering)
Uphawu |
Unobangela weengcambu |
I-Coating ijika ibe mhlophe opaque, inkozo, umphezulu orhabaxa |
Amalungu anganyibiliki ngokupheleleyo kwaye adityaniswe |
Ukubambelela kakubi - ukuxobula emva kokuxutywa okanye ukugoqa |
Ukudibanisa okubuthathaka kwi-fiberglass |
Ukunciphisa amandla e-dielectric, ukunyuka komoya ophezulu |
I-Porous, isakhiwo sefilimu esingaphelelanga |
Ukugxothwa kwamanzi / ioli ethotyiweyo |
Umphezulu awuxinananga ngokupheleleyo |
Amandla oomatshini akumgangatho ophantsi |
Ukuhlangana okubuthathaka phakathi kwamasuntswana |
Ukufumanisa: Ukuhlolwa okubonakalayo (i-opaque emhlophe, i-grainy), uvavanyo lwe-tape yokutsala (i-peeling), ukuhlolwa kwe-cross-section (amaqhekeza amhlophe angenakunyibilika ngaphakathi).
2. Ixesha lokubamba ixesha elide (over-sintering)
Uphawu |
Unobangela weengcambu |
I-PTFE iqala ukubola kwe-thermal |
Ukubonakaliswa kwexesha elide kwi-380-400 ° C (enzima ngaphezu kwe-415 ° C) |
Ukwaleka kujika kube tyheli, inkukuma, amabala amdaka/amnyama |
Ukuthotywa kobushushu |
Ukukhutshwa kwerhasi enetyhefu yefluoride (HF, PFIB) |
PTFE ukubola |
I-Fiberglass ilahlekelwa amandla okuqina |
Umonakalo we-oxidation wobushushu obuphezulu |
Imingxunya kunye namaqamza kwindawo yokwambathisa |
Ukuguquka kwegesi ukusuka ekuthotyweni |
Ukufumanisa: Ukuhlolwa okubonakalayo (i-yellow, i-srch spots), uvavanyo lwe-brittleness (iintanda xa zigobile), ukubonwa kwevumba (ivumba le-acrid libonisa ukubola).
IMigangatho yoHlolo oluSebenzayo kunye neeNgcebiso zokuPhuculwa kweNkqubo
1. Ukuseka iijika zexesha lobushushu
Sebenzisa isikhondo sobushushu somlilo ukurekhoda ubushushu bomphezulu welaphu lexesha lokwenyani kwaye uqinisekise ubude bexesha lokunyibilika elingaphezulu kwe-370°C. Le yeyona ndlela inokuthenjwa yokuqinisekisa ixesha langempela lokubamba.
2. Ukuhlolwa kokukhula okubonakalayo
Iingubo ezifakwe ngokupheleleyo zePTFE ezikhoyo:
Uniform semi-transparent ukuya kwinkangeleko elubala ngokupheleleyo (iyahluka ngokobukhulu)
Akukho masuntswana etshokhi anyibilikayo
Ibhetyebhetye ukubamba (ayiqinanga okanye ibhitye)
3. Uvavanyo lokuncamathela
Akukho ukuxutywa okanye intsalela ye powder emva kovavanyo lwetape yokutsala okanye ukugoba ngokuphindaphindiweyo (goba / ukutyhila amaxesha angama-5-10).
4. Ukuhlolwa okutshabalalisayo kwamacandelo
Ilaphu elisikiweyo libonisa:
5. Amanyathelo okhuseleko kunye nokupholisa ngenkani
Gcina umoya wokukhupha umoya onamandla ukuthintela ukuqokeleleka kweemveliso ezinetyhefu (perfluoroisobutylene, HF) ukusuka kwi-PTFE ukubola.
Gcoba ubushushu obuphezulu kunye nexesha lokubamba
Kwangoko yondla ilaphu kwindawo yokupholisa ngenkani emva kwecandelo lobushushu obuphezulu ukuba liphole ngaphantsi kwe-300 ° C ngokukhawuleza - ukupholisa ngokukhawuleza kunceda ukutshixa kwi-microstructure edibeneyo.
Isishwankathelo – IsiKhokelo sexesha esiKhawulezayo sokubamba iReference
Uhlobo lwesithando somlilo |
Ukutyeba kwelaphu |
eCetyisiweyo Bamba Ixesha |
Iyaqhubeka (izowuni ezininzi) |
Mncinci (0.08-0.15 mm) |
30 - 90 imizuzwana |
Iyaqhubeka (izowuni ezininzi) |
Phakathi (0.15-0.30 mm) |
90 - 180 imizuzwana |
Iyaqhubeka (izowuni ezininzi) |
Ubunzima (>0.30 mm) |
3 – 5+ imizuzu |
Ibhetshi (uhlobo lwebhokisi) |
Idyasi enye |
5 - 15 imizuzu |
Ibhetshi (uhlobo lwebhokisi) |
Iidyasi ezininzi / elaminethiweyo |
15 – 30 imizuzu |
Umgaqo jikelele: Yamkela elona xesha lincinane elamkelekileyo lokubamba eliqinisekisa ukunyibilika okupheleleyo kokunyibilika, ukulinganisa, kunye neqanda elingaphakathi elinganyibilikiyo - ukunciphisa umngcipheko wokuthotywa kwe-thermal.
I-Aokai PTFE ibonelela ngenkxaso yenkqubo ye-sintering ebandakanya ukulandelwa kobushushu, ukuhlolwa kwecandelo elinqamlezayo, kunye nokulungiswa kweparameter. Qhagamshelana nathi ngoncedo lobugcisa.
Idatha yobugcisa engentla inikezelwa ngu I-Jiangsu Aokai yeZixhobo eziNtsha zeTekhnoloji Co., Ltd.
Ukuba ufuna ukufumana iinkcukacha ezicacileyo, iimeko zesicelo kunye nezisombululo ezilungiselelwe umgca wethu wemveliso opheleleyo kubandakanya i-PTFE ilaphu elinobushushu obuphezulu, i-PTFE iteyipu yokuncamathela yobushushu obuphezulu, i-PTFE ye-mesh belt, ibhanti lokushicilela ubushushu obungenamthungo, ilaphu le-PTFE elisecaleni, elinobushushu obuphezulu obunganyangekiyo, nceda uqhagamshelane nathi nge-fiber-laphu elikwazi ukumelana nobushushu.
Sithobela imigangatho yobuchwephesha kunye nengqibelelo, ezinikele ekukuboneleleni ngezisombululo zemizi-mveliso enye kunye nenkonzo yabathengi ecingayo!
