Saa asɛm yi ka sɛnea wɔde coating machine line ahoɔhare ne oven tenten hyia de hwɛ hu sɛ organosilicone adhesive du botae curing degree ma high-temperature PTFE tape. Core matching nnyinasosɛm: bere a wɔde tra hɔ nyinaa t_total = fononoo tenten a etu mpɔn L ÷ line ahoɔhare v ɛnsɛ sɛ ɛba fam sen bere a wɔhwehwɛ sɛ wɔde sa yare a ɛba fam koraa. Nya ayaresa su denam DSC anaa adhesive ayaresa sɔhwɛ ahorow a ɛde 'ɔhyew — ayaresa bere a ɛba fam' abusuabɔ si hɔ. Equivalent cumulative cure model: kyekyɛ fononoo mu yɛ no zones, bu ti=Li/v ne tcure(Ti), hwɛ hu sɛ ∑(ti/tcure(Ti)) ≥1. Nkontaabu nhyehyɛe: hyehyɛ ɔhyew mmeae a ne tenten yɛ Li ne ɔhyew Ti; set line speed v, bu zone biara tena bere ne ntoboa ratio; san yɛ bio kosi sɛ ne nyinaa bɛyɛ ≥1 (wɔkamfo kyerɛ ahobammɔ kwan 1.1-1.2).

Saa asɛm yi de nsonsonoe a ɛda infrared radiation heating ne hot-air circulation heating curing akwan horow ntam toto crosslinked structure uniformity of silicone adhesive layers ho. Ɔhyew a wɔde kɔ baabi foforo: mframa a ɛyɛ hyew de ne ho to convection-conduction a ɔhyew kɔ soro brɛoo, ɔhyew mu nsonsonoe ketewaa bi a ɛwɔ mu/akyi so; IR wɔ bun a ɛhyɛn mu a anohyeto wom a ɛwɔ soro a ɛtwetwe denneennen (micrometer du kosi ɔhaha pii) a ɛma ɛyɛ sorokɔ-kɔ-mfinimfini a ɛyɛ toro. Nkɛntɛnso a ɛwɔ crosslink biakoyɛ so: mframa a ɛyɛ hyew ma wotumi yɛ synchronous curing wɔ mu ne akyi a crosslink density yɛ pɛ; IR ma soro layer yɛ ntɛmntɛm dense 'skin film' a esiw ɔhyew a ɛkɔ ne emu nkɔnsɔnkɔnsɔn kankan, ma crosslink density so tew fi soro kɔ mu.

Saa asɛm yi ka dodow mu nkitahodi a ɛda gel fã ne ahoɔden a ɛka bom wɔ silicone nhyɛso-te nka adhesives ma Teflon tape ntam. Gel fraction = mass ɔha biara mu nkyem a ɛyɛ crosslinked network a entumi nnye toluene mu (Soxhlet extraction, 24hr). Ahoɔden a ɛka bom a ɛda adi wɔ ɔhyew a ɛkorɔn a ɛkura tumi (180°C, 1kg). Ranges abiɛsa: ase critical point (<60%) — percolating network biara nni hɔ, kura tumi a ɛbɛn zero; practical range (60-85%) — cohesive ahoɔden nyin exponentially ne gel fraction, 60%→70% ma bere a wɔde kura mu fi simma kosi nnɔnhwerew, 70%→80% ma 3-10x nkɔanim; crosslinking a ɛkorɔn (>85%) — mfasoɔ brɛoo (85%→95% 20-50% pɛ kɔ soro), tack kɔ fam kɛseɛ, >95% hwere PSA agyapadeɛ.

Saa asɛm yi ka sɛnea wɔde peroxide crosslinking agents (BPO ne DCP) a ɛporɔw hyew ne ne fã nkwa nna bɛyɛ pɛ ne curing process window a wɔde yɛ Teflon tape no ho. Core data: BPO — 1-simma fã nkwa wɔ ~ 131 ° C, 1-hr wɔ ~ 92 ° C, 10-hr wɔ ~ 72 ° C; DCP — 1-min wɔ ~ 171 ° C, 1-hr wɔ ~ 135 ° C, 10-hr wɔ ~ 115 ° C. Nteaseɛ a ɛne ne ho hyia: adhesive hia 97-99% crosslinking = 5-7 fã-nkwa; bere a wɔde sa yare = 5-7 × nkwa fã wɔ ɔhyew a wɔde asi wɔn ani so no mu. Back-bu ɔhyew fi production line residence bere anaasɛ back-bu bere fi maximum a wɔma ho kwan.

Saa asɛm yi de nsonsonoe a ɛda infrared radiation heating ne hot-air circulation heating ntam toto crosslinked structure uniformity of silicone adhesive layer ho. Akwan a wɔfa so de ɔhyew kɔ baabi foforo: mframa a ɛyɛ hyew yɛ convection-conduction, ɛyɛ brɛoo na ɛkɔ so, na ɛma ɔhyew a ɛkɔ soro a ɛkɔ fam; IR yɛ radiation-absorption a ɛwɔ soro absorption a emu yɛ den (micrometers kosi millimeters) a ɛma ɛyɛ mmepɔwmmepɔw soro-kɔ-mfinimfini gradient. Nkɛntɛnso a ɛwɔ crosslink density kyekyɛ so: mframa a ɛyɛ hyew ma emu ne akyi afã horow no tumi hyɛn vulcanization temperature range mu ɛkame ayɛ sɛ bere koro mu, na ɛma crosslink density a ɛyɛ pɛ wɔ thickness no mu; IR ma ɔfasu a ɛwɔ soro no sa ntɛm ara a ɛyɛ honam ani a ɛyɛ den a esiw ɔhyew a ɛkɔ baabi foforo kwan, na ɛde sharp gradient of crosslink density so tew fi soro kɔ mu ba.

Saa asɛm yi hwehwɛ nkɛntɛnso a wɛb tension control nya wɔ Teflon high-temperature tape coating bere mu wɔ PTFE substrate flatness ne adhesive coating uniformity so. Nkɛntɛnso a ɛwɔ substrate flatness so: nhyɛso a ɛboro elastic anohyeto no ma plastic trɛw ne kɔn a wontumi nsakra (longitudinal elongation, transverse narrowing), yɛ slackness, wrinkles ne wavy patterns; PTFE creep wɔ nhyɛso a ɛkɔ so tra ase ase no bɛyɛ 'frozen' bere a ayɛ nwini akyi, na ɛde soro a ɛnyɛ pɛpɛɛpɛ ba; transverse tension a ɛnteɛ a efi roller parallelism a enye mu no ma anoano a ɛyɛ kurukuruwa, mfinimfini akisikuru, ne agyiraehyɛde ahorow a ɛyɛ den a ɛyɛ den bere ne bere mu ba.

Saa asɛm yi kyerɛkyerɛ nsakrae a ɛba wɔ ahoɔden a ɛka bom mu wɔ PTFE a ɛyɛ hyew kɛse teyp adhesive layer mu wɔ ɔhyew a ɛkɔ soro onyin akyi no mu. Nhwɛso a ɛwɔ afã abiɛsa: Post-curing rising stage (mfiase no ɔhyew a ɛkorɔn a wɔde da adi wɔ 200-260°C, residual reactive akuw kɔ so crosslinking, cohesion kɔ soro kɛse); Stable equilibrium stage (crosslinking bɛn wie, biakoyɛ kɔ so yɛ stable bere tenten); Degradation ne decline stage (bere/ɔhyew a ɛboro so ma main chain degradation, cohesion so tew, adhesive softens na ɛbɛyɛ tacky). Wɔyɛ ntini a ɛde cohesive huammɔdi (mfinimfini tetew gyaw nkae) ne squeeze-out (nwini a ɛsen fi anoano esiane modulus a ɛso atew nti) mu nhwehwɛmu.

Saa asɛm yi de akwan a wɔfa so ma creep resistance ne bere tenten a wɔde kura Teflon high-temperature tape a ɛkura mu no atu mpɔn. Akwan a wɔfa so yɛ adwuma no bi ne: Molecular network topology optimization — MQ silicone resin/gum ratio a ɛkorɔn (1.2:1–2:1) yɛ rigid hard-phase domains; phenyl akuw (20-30 mol%) a wɔde ka ho no siw nkɔnsɔnkɔnsɔn no kwan; crosslink molecule mu duru a wɔhwɛ so wɔ 5,000-15,000 g/mol; Gradient modulus multilayer adhesive nhyehyɛe — primer-anchoring layer (1-3μm) ne silane coupling agent, high-modulus cohesive layer (30-50μm) sɛ shear-resistant nnompe, viscoelastic dwumadi layer (3-8μm) ma soro nsu; Nanofillers — fumed silica (10-25 wt%) ne soro nsakrae ma reversible honam fam crosslinking.

Saa asɛm yi ka sɛnea microporous structure design of breathable Teflon (PTFE) high-temperature tape kari pɛ wɔ mframa a ɛkɔ mu ne insulation ne non-stick su ahorow ho. Core ntawntawdi: mframa a ɛtumi fa mu no hwehwɛ sɛ ntini a ɛbue, bere a insulation hwehwɛ sɛ ɛyɛ den na nea ɛnkyere so hwehwɛ sɛ ɛwɔ soro a ɛyɛ torotoro. Nsusuwii akwan a ɛkari pɛ: hwɛ sɛnea wɔkyekyem pɛpɛɛpɛ a, pore diameter (0.1-2μm, sɛnea ɛbɛyɛ yiye no <0.5μm) so na wɔasiw melt penetration ano na wɔakura breakdown voltage mu; control porosity wɔ 50-70% (≈60% optimal) a wonya Gurley 20-100s/100cc ne dielectric ahoɔden ≥2kV ma 0.13mm film; fa 3D network pore nhyehyɛe a ɛyɛ tortuosity kɛse (τ≈2.5-4) tom de siw nsu a ɛkɔ tẽẽ no ano; yɛ asymmetric gradient pore nhyehyɛe a dense surface skin layer (1-5μm) ma non-stick/insulation ne porous mu ma breathability; fa super-oleophobic / hydrophobic soro akyi ayaresa a enni pore blockage.

Saa asɛm yi de ano aduru a wɔahyehyɛ a wɔde besiw adhesive nkae ne adhesive mogya ano bere a wɔde PTFE a ɛyɛ hyew kɛse teyp redi dwuma de abɔ PCB sika kɔkɔɔ nsateaa ho ban bere a wɔreyɛ SMT nhyiam no ma. Ntini a ɛde ba nhwehwɛmu: nkae no ba fi huammɔdi a ɛka bom anaasɛ ntamgyinafo a wɔde kɔ baabi foforo mu; mogya fi viscosity drop ne adhesive overflow wɔ reflow ɔhyew ase. Core ano aduru ne tape paw a ɛfata: silicone PSA a bere tiaa mu peak ≥300 ° C, kɔ so ≥260 ° C, ne nyinaa thickness 0.08-0.13mm ne tratraa high-cohesion adhesive layers, ne anti-mogya / nkae-free adansedi. Anamɔn asia nhyehyɛe a wɔde di dwuma: pre-lamination ahotew a wɔde IPA; zero-tension lamination a mframa a ɛkɔ nipadua no mu nyinaa; optimized reflow ɔhyew profile a ɔhyew brɛoo (<2 ° C / s); awɔw mu a wɔde yiyi ne ho wɔ 50°C ase wɔ 180° anim; wɔyɛ ho adwuma ntɛm ara wɔ nnɔnhwerew 24 ntam na wɔde di dwuma pɛnkoro pɛ; huammɔdi ho dwumadie ne IPA popa ne 40-50x magnifier nhwehwɛmu. Sɛ wopɛ PCB a ɛwɔ afã abien a, fa teyp foforo si ananmu ansa na woayɛ ɔfã a ɛto so abien ho adwuma.