He thuziak hian carbon fiber flat composite product-a PTFE high-temperature fabric hman dan a huam a ni. Compression molding: mold leh prepregs inkarah dahin epoxy resin adhesion a veng a, demolding awlsam tak a siam thei a; panel te tak te tam tak inkar ah sandwiched a ni a, chu chu in inzawm lo turin a ni. Vacuum bag molding: prepreg leh breather cloth inkara release film hman nawn theih, gas/resin kal theihna tur a ni a, chutih rualin dam hnua awlsam taka peeling theihna tur textured side hian fine surface texture a transfer a, bonding roughness a ti tha a, sanding a ti bo. A siam chhuah chhunzawm zel: seamless non-stick conveyor belt hian prepregs chu heating/pressing zone kaltlangin a phur a; cushion layer hian pressure chu inang tlangin a sem darh a, localized indentations a tihtlem phah a ni.

He article hian PTFE surface modification atana flame treatment hman theih dan tur a zirchiang a, corona leh plasma treatment nena a nghawng dan a khaikhin bawk. Feasibility: flame hian PTFE a tidanglam thei a, mahse industry-ah erawh hman a ni tlem hle — safety risks (PTFE decompose releasing toxic HF and perfluoroisobutylene); performance limited (surface energy 30-35 mN/m chauh, boundary layer chak lo tak a siam). Hnathawh dan: meialh — transient high-temperature oxidation (>1000°C), etching tlem, oxygen group tlemte; corona — high-voltage discharge hian ozone/active oxygen a siam a, mild oxidation, energy density hniam chuan CF bonds a titawp thei lo; plasma — chakna sang tak nei particle/electron/free radical te hian CF bonds te chu direct in an cleave a, polar group (hydroxyl, carboxyl, amino) te chu an graft thin.

He thuziak hian silicone pressure-sensitive adhesives atana curing degree testing method pathum dikna a khaikhin a ni. Solvent extraction (gel content) hian Soxhlet extraction hmangin insoluble network fraction a teh a — physically entangled segments crosslink anga tihsual avanga overestimate, precision ±2-5%, chemical accuracy hniam ber. DSC hian residual reaction heat (α=1-ΔHresidual/ΔHtotal) a teh a — low-to-medium conversion-ah rintlak mahse diffusion-limited residual groups avang hian conversion sang takah chuan a overestimate a, repeatability <±2%.

He thuziak hian missile engine atana thermal insulation cladding-a PTFE hnathawh dan a huam a ni. Mechanism pali: Endothermic decomposition — PTFE hian ~400°C ah tetrafluoroethylene (highly endothermic, ~3,000°C combustion gas exposure) ah a depolymerize a, heat nasa tak a absorb a, wall surface atanga thermal energy a la chhuak thin. Transpiration cooling leh gas film insulation — decomposition gas (tetrafluoroethylene) te chu micro-pores hmangin pawn lamah an lut a, lei chung lumna chu a paih chhuak a flowing gas film hian wall atanga high-temperature combustion gas a isolate a, near-wall heat flux chu >50% in a tihtlem a; gas film hian boundary layer velocity/temperature a siam danglam a, particle erosion a tiziaawm a ni.

He thuziak hian PTFE structure leh property-a gamma-ray irradiation-in nghawng a neih dan a tarlang a ni. Chemical structure inthlak danglamna: gamma rays hian CC main chain leh CF side chain (G-value 3.0-3.5) a tichhia a, chu chuan chain scission nasa tak a thlen a, molecular weight tlahniam nasa tak a thlen a oxygen-ah chuan free radicals chuan peroxy radicals a siam a, acyl fluoride leh carboxylic acid end group (HF-ah hydrolyzing) a rawn luhtir a ni. Condensed structure a inthlak: crystallinity chu a tir lamah a sang (low dose, short chains rearrange) a tlahniam (dose sang zawk, defects hian crystals a tibuai); lamellar crystals te chu long-range order bo tawh angin crystallit te te zawkah an inthen darh thin. Property chhiatna: break-a elongation chu boruakah 0.1 kGy aṭangin a tlahniam a, ~1kGy-ah >90% a hloh — material chu a rigid leh brittle a; melting point chu 327°C atanga 310°C hnuai lamah a tlahniam a; polar group-te hian dielectric constant/loss an tisang deuh a; surface chu white atanga grey/black ah a inthlak a, gloss a hloh bawk.

He thuziak hian Teflon high-temperature cloth-a PTFE coating crystallinity control dan tur a huam a ni. Cooling rate regulation hi a direct ber leh a hlawk ber a ni: Cold air curtain, cooling rollers emaw water tank hmanga rang taka cooling (quenching) — molecular chain te chu ordered arrangement hmain a freeze a, crystal famkim lo te te a siam a coating hi a nem a, a tough a, non-stick performance a tha ber a, hardness/wear resistance a tihhniam deuh bawk. 10-50°C/h-a heat preservation section hmanga slow cooling (annealing) emaw furnace cooling emaw — molecular chain-te chu spherulites lian tak takah an inrem kim vek a coating hian hardness sang tak a nei a, wear resistance a nei tha hle a, dimension a stable a, flexibility a ti tlem a, brittleness a ti sang bawk.

He thuziak hian hot-air circulation sintering furnace-a Teflon high-temperature cloth hman dan a huam a ni. Feasibility: furnace temperature ≤260°C a nih chuan mesh belt emaw tray-ah non-stick cushion atan hman theih a ni (low-temperature drying, binder removal, slurry curing) — demolding leh picking efficiency a ti tha hle. Medium/high temperature (300-950°C)-ah khap tlat — PTFE hian a chhe a, toxic HF leh perfluoroisobutylene a chhuah tir a, hmanrua a ti chhe a, poisoning thihna thlen thei a ni. Safety principle: furnace temperature a chiang lo emaw, 260°C hnuai lam a guarantee theih loh emaw chuan hmang suh. Core property: service chhunzawm zel -70°C atanga 260°C, hun rei lote chhunga 300°C; non-stick leh chemical inertness nasa lutuk; electric insulation tha tak a ni a; friction hniam (~0.04) a awm a; fiberglass base hian tensile strength sang tak a pe a ni.

He article hian Teflon high-temperature fabric impregnation production line atana typical line speed range a huam a ni. Speed ​​ranges: thil tenawm pangngai (0.08-0.30mm) 0.5-3 m/min-ah, 1-3 m/min-ah stable; thil thick/multi-impregnated (≥0.4mm) chu 0.3-1 m/min-ah a ni a; high-efficiency line oven sei tak nei chuan 3-6 m/min a thleng thei a, mahse hmanraw mamawh tak a ni. Process constraints: drying leh sintering hian residence time a mamawh (PTFE hian 380-400°C-ah min 1-3 a mamawh a; tling lo chuan adhesion/cracking tha lo a thlen thin); speed hi fixed oven length hnuaia drying/sintering time tlem ber atanga teh a ni. Material constraints: solids/viscosity sang tak dispersions te chu zawi zawiin an lut a; puan thick/dense te hian liquid an absorb a, heat chu zawi zawiin an transfer a; puan zau tak, edge-center rawng inang lo, speed tihhniam ngai. Thil hmanrua leh quality inthlauhna: multi-zone oven sei tak chuan speed sang zawk a phalsak.

He thuziak hian suspension polymerization hmanga siam PTFE emulsion vs dispersion polymerization inkara danglamna a tarlang a ni. Thu chiang zawk: suspension polymerization hian direct-in PTFE emulsion a siam thei lo; PTFE emulsion dik tak chu dispersion polymerization atanga lo chhuak chauh a ni. 'Suspension-method emulsion' hi a takah chuan ground suspension-polymerized resin micropowder te tui hmanga suspension a ni. Dispersion polymerization (primary emulsion): spherical particles (0.1-0.3μm, narrow distribution), perfluorinated surfactants hmanga stabilized, molecular weight sang tak (>94% crystallinity), fibrillation chak tak, 380°C sintering hmanga film khauh chhunzawm zel siam a ngai a ni.

He article hian addition-cure silicone rubber crosslinking kinetics-a platinum catalyst type leh concentration-in nghawng a neih dan a zirchiang a ni. Catalyst chi hrang hrang: Speier catalyst (chloroplatinic acid, Pt4+) hian active low-valent species-ah tihtlem a ngai a, precatalyst angin a thawk a; Karstedt catalyst (Pt0 leh divinyltetramethyldisiloxane) chu direct in catalytic cycle ah a lut a. Type effects: Speier hian induction period langsar tak a nei a, S-shaped curing curve (slow early, accelerated later) leh apparent activation energy sang zawk a nei a; Karstedt hian induction a nei lo a, initial rate sang tak a nei a, sharp exotherm a nei a, activation energy a hniam zawk bawk.