PTFE High-Temperature Cloth Sintering-a PTFE Crystalline Structure inthlak danglamna

PTFE high-temperature cloth siamtu professional Jiangsu Aokai New Materials chuan PTFE high-temperature cloth sintering process chhung zawnga PTFE crystalline structure evolution chungchang a sawi chiang hle.

I. Original Crystalline Structure tihchhiat

1. Sintering hmain PTFE crystalline morphology a awm

Sintering hma hian PTFE hi fiberglass fabric-a inzawm dispersed emulsion particle angin a awm thin. Particle tin hian crystalline sang tak folded-chain lamellae a nei a, chutah chuan microcrystal te tak te, felfai taka dah a ni.

2. Sintering atan heating laiin structurel transformation

Temperature chu melting point (~327°C) aia sang a nih chuan crystal zawng zawng chu a hmin vek a ni. Folded molecular chain te chu a inhawng a, a inthen a, amorphous melt ah a inthlak thin. Particle te chu continuous molten phase-ah an inzawm khawm chuan original particle boundary te chu a bo vek a, initial granular crystalline structure chu a tichhia vek a ni.

II. Cooling laiin Recrystallization a awm

1. Spherulitic structure siam chhuah

Melten state atanga a lum chuan PTFE chu rang takin a recrystallize a, central nucleation site atanga pawn lam hawia radially oriented folded-chain lamellae atanga siam spherulites a siam thin. Heng interpenetrating spherulites te hian continuous crystalline matrix an siam a, original packed particle structure chu a thlak a ni.

2. Final crystallinity inthlak danglamna

PTFE hian rigid, highly regular molecular chain a nei a, cooling chak tak hnuaiah pawh crystallization rates chak tak tak a pe chhuak thei a ni. Final crystallinity hi a tlangpuiin 50% atanga 70% inkar a ni a, original emulsion particles aiin a hniam deuh hlek a ni.

III. Crystalline Parameter leh Crystal Form te lo inthlak danglam dan

1. Crystal phase nghet tak vawn tlat

Room temperature thlenga a lum hnuah PTFE hian hexagonal crystal system (room-temperature hexagonal phase) nghet tak a vawng reng a, chu chu a pre-sintering crystal form nen a inang reng a ni. Structural shift zawng zawng hi ultimate crystal phase aiin crystal size, perfection leh morphology-ah a thleng vek a ni.

2. Crystal perfection-a cooling rate-in nghawng a neih dan

· Slow cooling hian crystallinity sang zawk, spherulites lian zawk leh thicker, well-defined lamellae a pe chhuak a, chu chuan product hardness leh density sang zawk a siam chhuak thin.

· Rapid quenching hian crystallinity a hniam deuh a, spherulites a fin zawk a, a famkim lo zawk a, a siam zawh tawhte chu a flexibility leh semi-transparency a ti tha zawk bawk. Slow cooling hi PTFE high-temperature cloth atan chuan mechanical strength mamawh phuhruk nan standard a ni.

IV. Fiberglass-a Interfacial Crystallization-in nghawng a neih dan leh a pawimawh zawng zawng

1. Transcrystallization thil thleng (Transcrystallization) thil thleng

PTFE melt chu fiberglass surface-a a lum chuan fiber surface-a dense nucleation site-te chuan transcrystallization a thlen a: columnar crystal layer chu fiber axis-ah perpendicular-in a lo thang lian a, bulk coating chhunga spherulite morphology nen a danglam hle.

2. Fiber interface atanga coating bulk thlenga gradient structure

Fiberglass nghawng hnuaiah PTFE crystalline structure hian gradient transition a siam a: fibers bula transcrystalline layer chu inner coating matrix-a spherulitic structure-ah a inthlak zauh zauh a.

3. PTFE puan hnathawh danah structural transformation-in nghawng a neih dan tur thutlukna siamtu

Sintering hian granular folded-chain PTFE crystals chu a thlak danglam a: melting leh structural breakdown an tawk a, chutah chuan continuous, dense spherulites (interfacial transcrystalline layers nei)-ah an recrystallize leh a ni. Hei hian loose packed powder particles te chu intact continuous film ah a chantir a, hei hi coating hian heat resistance, low friction, non-stick property leh chemical corrosion resistance te bakah comprehensive performance a neih theih nan thil pawimawh tak a ni.

A chunga technical content kan tarlan te hi Jiangsu Aokai thil thar siam chhuahna Co., Ltd.

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