Kubata simba - kugona kwetepi yekunamira kuramba kushushikana kweshear uye kugara munzvimbo iri pasi pemutoro unogara uchiremerwa, kunyanya patembiricha yakakwira - ndeimwe yeanonyanya kukosha metrics ekuita PTFE high-temperature adhesive tepi . Simba rekubata risina simba rinotungamira kune tepi kutsvedza, masara ekunamatira, uye kusvibiswa kwemidziyo.
Nheyo yemusimboti yekuvandudza simba rekubata iri paviri: wedzera kusimba kwakabatana kweiyo adhesive layer uye simbisa iyo interfacial anchoring simba pakati pekunamatira uye PTFE substrate..
Aokai PTFE yakagadziridza ese ari maviri ekubatisa uye ekurapa maitiro kuti awane yepamusoro kubata mashandiro. Gwaro iri rinovhara mhinduro dzakarongeka pazvikamu zviviri izvi zvakakosha zvekugadzira.
Coating Process Optimization - Kuvaka Nheyo
Maitiro ekupfekedza anotarisa zvakananga chimiro, ukobvu kuenzana, uye simba rekubatanidza ne substrate - hwaro hwesimba rekubata rakanakisa.
1. Primer coating - iyo yakakosha mhinduro yePTFE's kusanamatira zvakanaka
PTFE inoratidzira yakaderera pasi pesimba repamusoro (18-20 dynes/cm), ichiita iyo inonamira layer inoenderana nekubatanidza peeling pasi pekupisa-kupisa kweshear kushushikana. A primer coating process inofanirwa kuitwa pamberi pekunamira kwepamusoro.
Primer kusarudzwa: Silane coupling agents kana yakakosha silicone primers (mhinduro dzakasanganiswa netackifying resin uye reactive silane) inogamuchirwa zvakanyanya. Yekuwedzera-kurapa silicone PSA, vinyl kana epoxy inoshanda silane-based primers inosarudzwa.
Key process control points:
Ultra-yakaonda primer firimu: Dzora yakaoma firimu ukobvu mukati me0.5–2 μm - yakawandisa primer inoumba isina kusimba muganho layer inoderedza kubata simba.
Yakakwana pre-drying: Yakazara evaporate solvent uye yakakwana preliminary condensation / crosslinking pamberi pekuputira kumusoro, kudzivirira primer solvent kutama kupinda pamusoro pekunamira.
In-line surface treatment + primer coating: Ita plasma yepamhepo kana corona kurapwa pane PTFE substrate pakarepo pamberi pekutanga application kuti udzivise attenuation yepasi activation.
Kubata simba kunowanzo simuka nekunamira ukobvu, asi kunyanyisa kukoira kunowedzera kunamira kunonamira pasi pekupisa kwakanyanya uye kunodzosera kushaya simba kubata.
Yakakwana yakaoma yakaoma adhesive ukobvu: Silicone PSA inowana rakakwana kubata simba pakuoma kwakaoma kwe30-60 μm.
High-chaiyo yekuputira nzira: Adopt comma coating, slot die coating, kana yakakwirira-chaiyo micro gravure coating kuchengetedza longitudinal uye transverse ukobvu kushivirira mukati ± 2 μm . Ukobvu husina kuenzana hunokonzeresa kushushikana mupfungwa, zvichiita kuti pave nekutsemuka kubva panzvimbo yakaonda zvakanyanya panguva yekubata kuyedzwa kwemagetsi.
3. Adhesive liquid pretreatment uye feeding system
Vacuum defoaming: Degas inonamira mvura pasi pevacuum mushure mekusanganiswa kana isati yavhara kudzivirira yakawedzera voids panguva yekurapa, iyo inoita senge kuparuka kwekutanga mapoinzi pasi pemutoro unogara uripo.
Mu-mutsara musanganiswa uye maturation: Kune maviri-chikamu chesilicone adhesive, shandisa static musanganiswa wekudyisa zvakananga uye kudzora mvura yekugara nguva kuti uve nechokwadi chekufanana kwekutanga kuita uye kubvisa nzvimbo dzisina kusimba dzekubatana.
Hutsanana manejimendi: Shongedza misoro yekuvharisa neguruva-proof yakavharirwa uye sefa inonamira mvura kuburikidza ne5-10 μm sefa cartridges kudzivirira kusvibiswa kunokonzera kushushikana.
Kurapa kunotemesa iyo yekupedzisira crosslink density, yemukati yekushushikana mwero, uye yasara diki mamorekuru zvemukati - izvo zvinotonga zvakananga kusimba kwakabatana uye yakakwirira-tembiricha inokambaira kuramba.
1. Stepwise kudziyisa uye multi-zone kurapa
Danho |
Tembiricha |
Chinangwa |
Low-temperature solvent kubvisa |
80–100°C |
Volatilize solvent ine nguva yakakwana yekugara; dzivisa premature surface skinning kuteya mukati me solvent |
Kuumbwa kwepakati-tembiricha |
120–140°C |
Gadzira preliminary crosslink network, ipa yekutanga mechanical simba, wedzera kubvisa zvakasara solvent |
High-tembiricha yakadzika crosslinking |
150-220 ° C (inogadziriswa nemhando yekunamatira) |
Complete zvakakwana crosslinking; kudzora tembiricha chaiyo kwakakosha |
Muono wakakosha: Kupisa kwakadzika nhanho kunofambisa kuumbwa kweyunifomu, yakaonda matatu-dimensional network mukati mekunamira, ichiunza yakakura kwazvo kubata kubata kana ichienzaniswa nechikamu chimwe-yepamusoro-tembiricha yekubheka. Kusakwana kwekushisa kunokonzera kusakwana kuyambuka uye nyoro yakabatana; kupisa kwakanyanya kunogona kukonzera kuchembera kwekunamatira kana kushushikana kukuru kwemukati kubva kusingaenderane nekuderera kwekushisa.
2. Kurapa-kupora uye kurapa kwekukura
In-line post-curing: Seta chikamu chehovhoni chakawedzerwa usati wamonereka netembiricha yakadzikira zvishoma pane peak crosslinking tembiricha kuti urebese nhoroondo yekupisa uye kuita yakazara crosslinking reaction.
Roll maturation kurapa: Isa maronda tepi rolls muovheni inogara-inopisa ( 40-60 ° C kwemaawa 24-48 ) kuitira kuchengetedza static. Iyi nzira:
Inopedzisa yasara crosslinking reaction zvishoma nezvishoma
Inozorodza kushushikana kwemukati kunokonzerwa nekusaenderana nekupisa kwekuwedzera pakati pe substrate uye inonamira
Kunyanya inovandudza-yenguva refu-inotakura-inotakura kuita pasi pekushisa kwakanyanya
Staged tension annealing: Isa diki cyclic tension kune yakatenderedzwa tepi panguva yekukura kubatsira kusunungura kushushikana.
3. Kurapa mamiriro uye kutonga kwezvakatipoteredza
Yakaderera-humidity nharaunda manejimendi: Kune condensation-kurapa silicone adhesive, ine mwero ambient mwando inotora chikamu mukuyambuka, nepo hunyoro hwakanyanya huchikonzeresa kukurumidza ganda uye kutadzisa kurapa kwakadzika. Kuwedzera-kurapa silicone adhesive kunoda kwakasimba kuparadzaniswa kwesarufa uye nitrogen-ine makomisheni kudzivirira catalyst chepfu.
4. Tension uye shrinkage stress regulation
PTFE firimu rinowanzoita kurebesa uye kupisa shrinkage pasi pekupisa kwakanyanya.
Low-tension conveyance: Chengetedza kugara uye kushoma substrate tension mukati meovheni kudzivirira kurapa pasi pekunamira kwakatambanudzwa. Mushure mekutonhodza, substrate shrinkage zvidzidzo zvinonamira kune inopfuurira compressive / shear mukati kushushikana - zvakanyanya kuderedza kubata simba.
Substrate preheating: Preheat iyo PTFE substrate kusvika yakakwira zvishoma pane inonamira yemvura tembiricha isati yapfekedzwa kuti iwedzere kunyorova kwekupfeka uye kudzikisira kwakanyanya kupisa kutyisa shrinkage painopinza yeovheni.
Pfupiso -Kupfekedza uye Kurapa Optimization Cheki
Process Area |
Key Parameter |
Target/Optimization |
Primer coating |
Dry firimu ukobvu |
0.5-2 μm (Nzvenga muganhu usina simba) |
Primer coating |
Pre-drying |
Complete solvent kubviswa pamberi pekuputira pamusoro |
Primer coating |
Surface activation |
Plasma/corona mu-mutsara pamberi pekutanga |
Adhesive coating |
Dry ukobvu |
30–60 μm (yakanyanya kunaka) |
Adhesive coating |
Ukobvu kushivirira |
± 2 μm (kudzivirira kushushikana kwepfungwa) |
Adhesive coating |
Utsanana |
5–10 μm kusefa, kuvharirwa kweguruva |
Kurapa profile |
Stepwise kudziyisa |
80-100°C → 120-140°C → 150-220°C |
Mushure mekurapa |
Maturation |
40-60 ° C kwemaawa 24-48 (kushungurudzika kuzorora) |
Kuporesa mamiriro |
Humidity control |
Zvine mwero kune condensation-kurapa; dzivisa catalyst chepfu yekuwedzera-kurapa |
Tension control |
Mu-ovheni tension |
Zvidiki, zvisingaperi (rega kutambanudza panguva yekurapa) |
Substrate preheating |
Asati apfeka |
Zvishoma pamusoro pekunamatira tembiricha |
Aokai PTFE inoshandisa idzi optimized coating uye kurapa maitiro kugadzira PTFE adhesive tepi ine yepamusoro kubata simba. Kune vatengi vanoda chaiyo kubata patembiricha yakakwira, tinogona kugadzirisa maprimer maumbirwo, ukobvu hwekunamira, uye kurapa maprofile kuti asangane nezvinodiwa zvako.
Ruzivo rwehunyanzvi rwuri pamusoro rwunopihwa ne Jiangsu Aokai New Materials Technology Co., Ltd.
Kana iwe uchida kuwana tsanangudzo dzakadzama, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvechigadzirwa chedu chizere zvinosanganisira PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-temperature adhesive tepi, PTFE yakakwirira-temperature mesh bhandi, seamless kupisa kudzvanya bhandi, single-sided PTFE jira, yakakwirira-tembiricha inodzivirira-inodzivirira girazi, tapota taura nesu pazasi girasi resipiritsi, faibha inodzivirira girazi uye faibha bhandi.
Isu tinogara tichinamatira kuhunyanzvi uye kutendeseka-kwakanangana nesevhisi uzivi, nemoyo wese tichipa imwe-yekumira maindasitiri mhinduro uye inofunga sevhisi yevatengi kune vese vatengi!
