PTFE high-temperature cloth siamtu professional Jiangsu Aokai New Materials chuan thuk takin a zirchiang a ni. Matt sanding treatment hian PTFE high-temperature cloth chunglam structure-ah inthlak danglamna bulpui tak a thlen a ni. A tir lama ultra-inert, ultra-smooth surface chu dimension pathum atanga bondable, awlsam taka wettable functional surface ah a chantir a, chungte chu physical morphology, coating integrity leh surface chemical state te an ni.
PTFE high-temperature cloth tihfai loh chunglam chu microscope hmangin a hrual deuh a, melt-sintered polytetrafluoroethylene film chhunzawm zel atanga siam a ni. Sanding treatment hian a micro-morphology nasa takin a tidanglam a:
· Surface roughness nasa taka tihpun: Mechanical sanding (abrasive belts, steel wire brushes) emaw sand blasting (corundum, white fused alumina) emaw hian lei chunglam chu a tikehsawm a, a nghawng a, micro-grooves, pits leh peaks disordered chhiar sen loh a carving. Core roughness indicator Ra (assessed profile-a arithmetical mean deviation) leh Rz (inregularities point sawma sang) te chu nasa takin an pung a ni.
· Mechanical anchoring structure siam: Heng micro-groove te hi scratch awlsam tak ni lovin, 3D interlocking structure an ni. Hei hi anchoring effect bulpui ber a ni: adhesives te hian heng gap te hi an lut a, an curre a, a hnu lama bonding emaw coating emaw atan physical interlocking an siam thin.
· Altered surface uniformity: Sanding dik tak chuan even matte finish a pe thei. Process control dik lo chuan over-sanded area (severely thinned coating) leh unsanded smooth patches a siam a, chu chuan irregular heterogeneous morphology a thlen thin.
Hei hi risk pawimawh ber a ni a, process control khauh tak a ngai a, chu chuan product-a core service performance chu direct-in a tichiang a ni:
· PTFE layer thinning: Sanding hi a bul berah chuan physical material lakchhuahna a ni. Temperature sang tak puan PTFE coating hi a tlangpuiin micron sawm atanga za tam thlenga thuk a ni. Sanding tam lutuk hian coating thickness nasa takin a tihtlem a, dielectric strength leh chemical corrosion resistance service life a tihhniam bawk.
· Fiberglass substrate exposed (structural defect na ber ber) hlauhawmna): Grinding depth hian PTFE coating thickness a pelh chuan a hnuaia fiberglass fabric chu abrade chhuak ang a, hei hian failure hrang hrang a thlen ang:
1. Non-stick property hloh: Glass fiber langsar tak takte chu thil siamah awlsam takin an innghat a;
2. Moisture leh chemical penetration: Tui vapor leh chemical te chu glass fibers capillary action hmangin puan chhungah an lut a, chu chuan delamination leh performance degradation rang tak a thlen a
3. Mechanical strength tihtlem: Glass fibers abrasion hian puan pum pui tensile strength a tlahniam nasa hle.
· Microcrack leh accumulated debris siam chhuah: PTFE-a abrasive cutting hian brittle fracture leh ductile tearing a inzawm khawm a, groove edge leh bottom-ah microcrack leh burrs a siam a ni. Hetihlai hian stripped PTFE chips te chu a chung lamah loose takin an re-deposit thei a, island ang maia loose structure an siam thei a, chu chuan a hnu lama coating emaw bonding emaw rintlakna a tichhe thei a ni.
3. Surface Chemical State: Ultra-Inert atanga Activated thlengin a awm thei
Sanding hi a bul berah chuan taksa lama enkawlna ni mah se, lei chunglam chemical property-ah pawh inthlak danglamna a thlen bawk:
· Lei chung chakna sang: Pure PTFE hian lei chung chakna ultra-low (18–20 mN/m) a nei a, tui contact angle chu 108° aia sang a ni. Sanding hnuah, rough surface siam thar leh molecular chain chhe tawhte chuan high-energy active sites chu rei lo te chhung atan a pholang a, surface energy chu 40 mN/m aia sangin a chawi sang a ni. Tui tla te chu a darh a, a chunglam a hnim a, temporary hydrophilicity a lantir a, hun kal zelah a bo zauh zauh thin.
· Polar functional groups te chu hun eng emaw chen atana dah luh: High-energy grinding hian PTFE molecular chain chhe tawh leh boruaka oxygen/moisture inkara reaction a siam a, chu chuan polar functional group carbonyl (C=O) leh hydroxyl (-OH) te a siam nghal a ni. Heng group te hian chemical modification dang emaw adhesive lamination emaw atan chemical bonding a siam thei a ni.
A nghawng zawng zawng khaikhawmna
A tawi zawngin, qualified sanding treatment chuan PTFE puan chungah micro-nano structure uniform, rough, activated a siam a, a hnuaia fiberglass substrate chu a tichhe lo.
· Positive transformation: PTFE-a inherent poor adhesion problem chinfel nan mechanical interlocking texture a siam.
· Negative drawbacks: Original non-stick performance, surface smoothness leh transparency a sacrifice a, substrate chhiatna leh service life tawi thei tur risk awm reng a awm bawk.
Chuvangin, he process bulpui ber chu material removal depth precise control-ah a awm a — top PTFE surface layer chauh chu abraded a ni a, fiberglass reinforcement skeleton chu khawih lovin. Treated cloth chu a optimal activated surface state hmang tangkai turin coating emaw bonding process-ah thawn nghal a ni tlangpui.
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