He article hian fiberglass fabric PTFE emulsion hmanga impregnate dan tur basic process kimchang tak a rawn tarlang a ni. Step pawimawh pasarih: 1 Textile sizing agents paih chhuah nan 350-400°C-ah pretreatment (dewaxing/desizing); 2 Emulsion formulation, 40-55% solid content leh surfactants hmanga wetting tihchangtlun nan; 3 Dip-squeeze method emaw doctor blade coating hmanga impregnation; 4 Tui zawi zawiin a vawt a, dry PTFE film siam turin 100-150°C-a vawt; 5 PTFE particle te chu continuous film-ah a hmin theih nan 360-390°C (400°C thleng)-ah sintering; 6 Multi-cycle impregnation-drying-sintering vawi 2-4 vel tih nawn lehin target thickness leh resin content (45-65%) a thleng a; 7 Post-treatment-ah hian corona treatment, edge trimming, winding leh quality inspection te pawh a tel. Core control points: dewaxing kimchang, emulsion wetting kimchang, a vawt zauh zauh, sintering temperature dik tak, leh coating density inmil. Products te hian high-frequency copper-clad laminates, high-temperature conveyor belt leh architectural membrane materials te an rawn pe a ni.

He thuziak hian PTFE high-temperature cloth-in a tuar theih organic solvents te a rawn tarlang a ni. PTFE-coated fiberglass fabric hian chemical inertness danglam tak a lantir a, hnathawh dan pangngaiah organic solvent pangngai zawng zawng deuhthaw chu dissolution, swelling leh chemical reaction awm lovin a do thei a ni. Tuar theih chi hrang hrangte chu: alcohol (methanol, ethanol, isopropanol), ketone (acetone, MEK, cyclohexanone), ester (ethyl acetate, butyl acetate), hydrocarbon (gasoline, toluene, xylene, hexane), halogenated hydrocarbon (dichloromethane, chloroform, carbon tetrachloride), ethers (diethyl ether, THF), organic acids (glacial acetic acid, formic acid), amines leh amides (triethylamine, DMF), phenols, leh a dangte chu carbon disulfide, pyridine, silicone oil leh brake fluid te hi a ni.

He thuziak hian PTFE high-temperature cloth sintering neih chhunga cooling rate mamawh a huam a ni. 380-400°C-a sintering hnuah chuan puan chu 310-315°C crystallization-sensitive zone-ah rang takin a paltlang a ngai a ni. Cooling rate rawt chu 30-50°C/min tal a ni (puan te tak te hian air cooling hmangin 100-200°C/min a thleng thei). Rapid cooling (quenching) hian crystallinity hniam (45-50%) a siam a, coatings nem, tough tak tak, a chunglam hrual, adhesion nghet tak, non-stick performance tha tak, leh delamination leh cracking laka invenna a pe chhuak thin. Slow cooling (furnace cooling) hian crystallinity sang tak (60-70%) a thlen a, chu chuan rigid, brittle coatings te chu a shrinkage, peeling leh microcrack a thlen awlsam hle.

High-tensile PTFE high-temperature cloth hi PTFE hi high-strength fiberglass fabric-a coating hmanga siam a ni a, tensile strength, heat resistance, non-stick property, chemical resistance, leh friction hniam tak a pe a ni. A hmanna pawimawh tak takte chu: industrial conveying (heat shrink packaging, ei tur siam, textile dryer, paper/film drying); composite molding chhuahna puan leh hot press cushion liners te; weld hmanga venhimna curtain leh thermal insulation jacket te; electric motor leh transformer insulation te; sliding bearing leh pipeline support siam; chemical filtration leh valve sealing te chu corrosive environment-ah te hman a ni. Tensile strength sang tak hian heng heavy-duty application hrang hrangah hian tension, tearing, repeated flexing, leh high-temperature mechanical stress hnuaia durability a tichiang a ni.

Sintering lai hian fiberglass fabric-a PTFE particle te chu 327°C aia sangah an melt a, original folded-chain lamellae leh particle boundary te chu a tichhia a, amorphous melt a siam a ni. A lum chuan PTFE chu radially oriented lamellae atanga siam spherulites ah a recrystallize leh a, crystallinity chu 50–70% inkar a ni. Cooling rate hian crystal perfection a tichiang a: slow cooling hian crystallinity sang zawk, spherulites lian zawk, hardness sang zawk a pe chhuak a; rapid quenching hian spherulites finer a pe a, flexibility a ti tha zawk bawk.

Jiangsu Aokai atanga he technical brief hian sintering temperature hniam lutuk emaw sang lutuk emaw hian PTFE high-temperature cloth a tihchhiat dan a zirchiang a ni. Sintering hniam chuan particle te chu a hmin lo a, micro-pores, coating-substrate bonding chak lo, rough surface, mechanical strength tha lo, leh milky opaque appearance te a siam thin. Overheating hian PTFE thermal degradation a thlen a, pinholes, bubbles, brittleness, yellow-to-black discoloration, leh toxic fumes a siam chhuak thin. Extreme pahnih hian compactness, non-stick performance, flexibility, insulation, leh dimensional stability te a tichhia a ni.

PTFE high-temperature cloth insulating gaskets hian dielectric strength sang tak (humidity hnuaia stable), -70°C atanga 260°C temperature range, universal chemical resistance (molten alkali metals tih loh), non-stick surface (creepage a veng), anti-creep (fiberglass reinforcement vs. pure PTFE), tensile strength sang, friction hniam te a keng tel a ni (μ=0.05-0.1), leh V-0 meialh rating a ni. Mica, rubber, leh PTFE gasket thianghlim nena khaikhin chuan PTFE puan hian flexibility, processability, leh long-term dimensional stability tha zawk a pe a ni. Transformer, motor insulation, chemical flange sealing, leh semiconductor hmanrua atan a tha hle.

Sintering laiin PTFE puan a flatness hian tension, temperature, leh restraint control dik tak a mamawh a ni. Core methods: stenter machine (pin plate-te hian a zau zawng a vawng reng a, weft a tihtlem loh nan), gradient temperature profile (slow heating → 380-400°C hold → slow cooling 310°C hnuaiah tension a chhuah hmain), pre-shrunk substrate (coating hmain weaving stress a paih chhuak), leh uniform coating thickness (differential melting a veng). Stenter restraint hi PTFE crystallization point (approx. 310°C) hnuai lama a lum thlengin vawn reng tur a ni a, chu chuan warpage a awm loh nan.

Fiberglass puan PTFE emulsion impregnation laiin coating uniformity hi product quality nunna kawng a ni. Coating inthlau lutuk hian a chhan: non-stick failure (thin spot-a stick), mechanical weakness (stress concentration, tearing), electrical instability (breakdown voltage 1/10-ah a tlahniam), chemical penetration (pinhole corrosion), dimensional issues (warpage), leh processing defects (belt wandering, thickness variation) te. Uniform coating atan hian emulsion viscosity, solid content, fabric tension, squeeze gaps, leh multi-zone drying/sintering profile te chiang taka control a ngai a ni.

PTFE high-temperature cloth hian temperature a san chuan structural change stage pali a tawk a: 260°C hnuai lam – slow micro-cracking leh residual additive volatilization 327°C (melting point)-ah – crystalline-to-amorphous transition, coating a nem a, fiberglass atanga delaminate a ni a; 400-500°C – PTFE hian depolymerize (toxic gas a chhuah tir), coating a bo; 500°C aia sang – fiberglass chu a nem (840°C softening point) a, structural integrity a hloh bawk. 260°C hnuaiah chhunzawm zel la, him taka hnathawh theih nan >300°C peaks kha pumpelh rawh.