PTFE high-temperature tepi inoshanda sechinhu chakakosha mukugadzira semiconductor, kwete general-purpose consumable. Zvishandiso zvakakosha: wafer-level dziviriro (plasma etching masking, CMP backside protection, CVD/PVD masking), nzira dzekurongedza (waya bonding fixation, soldering mask yePCBs), uye kugadzirisa midziyo (anti-static roller kuputira, kucherekedza mukamuri yekumaka). Ultra-yakachena zvinodiwa: yakaderera halogens (inodzivirira bond pad corrosion), yakaderera siloxanes (<500 ppm, inodzivirira insulating particle formation), low metal ions (<1 ppm imwe neimwe), ISO Class 4 cleanroom slitting/packaging, 10⁶-10⁹ Ω pasi pepamusoro peOC resistivity, uye low TV surface resistivity.

Medical-giredhi PTFE yakakwirira-tembiricha tepi inosanganisa biocompatible PTFE substrate ine platinamu-yakapora silicone adhesive. Zvinhu zvakakosha: ISO 10993 inoenderana (hapana cytotoxicity, sensitization, kana kushatirwa), inoshingirira kudzokororwa sterilization (steam/EO/gamma), 260°C kupisa kuramba. Chengetedzo dzakakosha: usapfuure 260°C (hutsi hunokachidza huri pamusoro pe300°C), gamma irradiation inogona kukonzera kubvongodzwa, kusimbisa nzira dzesterilization, uye kukumbira magwaro ekutevedza akazara (ISO 10993 mishumo, MSDS, data yekuchembera). Kwete yeropa rakananga kana kushandiswa kwekuisirwa kunze kwekunge kwakanyatso kusimbiswa.

PTFE tepi reusability inoenderana nezvinhu zvina: adhesive formulation (yakakwira crosslink density, yakaderera silicone migration, microphase chimiro che repositionable tack), substrate anchoring (pamusoro activation + primer kudzivirira yakazara adhesive kutamiswa), kuseri kwekuvhara (kuburitsa layer kuchengetedza adhesive panguva yekusunungura), uye kubata kwakaringana (yakachena-inonamatira tekinoroji, kudzivirira kwakachena nzira yekunamira). Mvura-inogezwa yakagadziridzwa inonamira inogona kupora> 90% tack mushure mekuchenesa.

Fiberglass fabric thermal shrinkage ndiyo inonyanya kukonzera PTFE tepi dimensional kusagadzikana. Pa PTFE sintering tembiricha (360-400 ° C), zvakasara zvekuruka kushushikana kunoburitswa. Kana isingadzoreki, jira rinopera; kana ikadziviswa, kushushikana kwakadzikama kunovharirwa mukati, zvichiita kuti gare gare kupera panguva yekunamatira kurapa (150-200 ° C) uye kupera-kushandiswa kupisa. Mhinduro: shandisa pre-heat-set fiberglass ne <0.5% shrinkage pa 400 ° C, kubvisa kushushikana kwakasara kusati kwavhara.

Yakakura-tembiricha-yakasiyana-siyana PTFE tepi inoda silicone PSA inochengetedza kunamatira kubva -70°C kusvika 260°C. Makiyi ekugadzira zvinhu: primer-anchored transition layer (inodzivirira delamination), sea-island microstructure (MQ resin zvitsuwa + polysiloxane inoenderera nhanho), gradient crosslinking (yakakwirira-density yemukati layer yezvinokambaira, yakaderera-density yekunze layer kune yakaderera-temp tack), uye kupisa-yakagadzikana mafiritsi (cerium oxide). Phenyl-modified siloxane segments inodzvinyirira yakaderera-tembiricha crystallization, ichigonesa kuchinjika pazasi -100°C.

Iyo yakachekwa yekupedzisira kumeso chimiro chePTFE yakakwira-tembiricha tepi inokanganisa zvakananga kunama kuyerera uye kusimudza kumucheto panguva yekushandisa. Kutsemura kusina kunaka (mablades akagomara, kona isina kufanira) kunogadzira glue filaments, kutetepa kumucheto kwenamira layer, uye kunofumura mabhura efiberglass - zvichitungamira mukuyerera, kusimba kusungirirana, uye kusimudza mukupisa kana kunetsana. Zviso zvisina kujairika zviso (wavy, protruding) zvinokonzeresa kusaenzana kwekudzvanywa, kutyaira kunamira kunokwira panguva yekuchengetedza. Iyo yakanakira magumo chiso yakatsetseka, inotsvedza, uye isina kukuvara - ichiita sechisimbiso chinokiya chinonamira uye chinova nechokwadi chese kumucheto kusungirirwa.

Munguva yePTFE tepi yekuputira, iyo inonyungudutsa volatilization mwero wesilicone pressure-sensitive adhesive ndiyo yakakosha process parameter. Kunyanya kukurumidza → kukwenya pamusoro, kusaenzana zvakanaka, mapini (akavharirwa solvent), uye craters (condensation kana contaminant-induced). Kunyanya kunonoka → kuderera, makobvu macheto, uye kunyorova pane yakaderera-pamusoro-simba PTFE. Iro zano rakakodzera: kunonoka kwekutanga kuvhuvhuta kwekuenzanisa uye kupukunyuka kwebubble, wobva wawedzera kuomesa kuumbwa. Shandisa zvinonyungudutsa zvakasanganiswa (toluene/xylene + kukurumidza kuomesa) uye tembiricha yehovhoni yegradient (yakaderera → yepakati → yakakwirira).

PTFE high-temperature tepi inorasikirwa nekunamatira mushure mekushandisa kakawanda nekuda kwekusvibiswa kwepamusoro (guruva, silicone mafuta), kusungirirwa kwakabatana kukundikana (kusara), kana kusimba kwe substrate bonding. Mhinduro: high-crosslink silicone PSA (yakaderera kutama, kuenzanisa tack / kubata simba), primer treatment paPTFE substrate, dense fiberglass backing, uye kubata kwakakodzera (nzvimbo dzakachena, ganda rinotonhorera, 180 ° angle). Quantitative test inosimbisa kuvandudzwa.

PTFE high-temperature tepi yakachengetwa pasi pemamiriro akatarwa (10-25 ° C, 40-70% RH, kure neUV / heavy pressure) ine mararamiro esherufu emwedzi 3-6 (makirasi ekutanga kusvika kumwedzi gumi nemiviri). Key degradation zvikumbaridzo: simba repeel harifanire kudonha pasi pe70% yekutanga kukosha; hapana masara ekunamatira mushure mekubviswa kwekushisa kwepamusoro; hapana carbonization kana kutsemuka pane yakatarwa tembiricha. Kurumidza kutarisa: manyore kusunungura kunzwa, 260 ° C yasara bvunzo, uye lamination shrinkage bvunzo.

Yakakungurutswa PTFE tepi inogona kugadzira interlayer adhesion (kuvharira) uye adhesive kutamisa panguva yekuchengetedza kwenguva refu. Zvinokonzera: PTFE firimu elastic memory uye silicone PSA inokambaira pasi pekumanikidza / kupisa. Kudzivirirwa: gradient winding tension (yekunze yakamanikana, yemukati yakasununguka) panguva yekugadzira, pamwe nekuburitsa coating padivi risinganamire. Chengetedza pa -15 ° C kusvika 40 ° C, 30-70% RH, yakatwasuka pamaracks, tenderera rolls per quarter. Kune akakora adhesive mamakisi, wedzera kuburitsa bepa pakati pezvikamu.