Chemical plant-ah chuan pipe leh vessel-te chu aggressive media – acid chak tak, alkalis lum, organic solvent, leh steam atanga beihna an tawk fo thin. PTFE tape hi anti-corrosion, non-stick, leh sealing laka invenna atana hmanraw hman tlanglawn tak a ni. Mahse tape dik thlan chu temperature rating sang ber thlan angin a awlsam lo.
Aokai PTFE hian kum sawm tam tak chhung chu chemical hmanna tur PTFE tape hi a lo supply tawh a ni. He kaihhruaina hian PTFE tape-a layer thum structure, core selection criteria (temperature, chemical media, mechanical mamawh), leh critical construction guidelines te a sawifiah a ni.
PTFE High-Temperature Tape hmanga Layer Thum awm dan
Commercial PTFE tape performance pum pui hi structural layer pathum hmanga teh a ni:
Structural Layer a ni
Thil hman tlanglawn tak tak
Product thlan danah nghawng a nei
Surface functional layer a ni
PTFE film thianghlim / PTFE-a dah fiberglass puan
Non-stick property, chemical laka invenna, leh temperature sang ber laka invenna te a thunun
Substrate tichaktu a ni
Engmah (pure film) / Fiberglass puan / Aramid puan
Mechanical strength, tensile resistance leh puncture resistance te a tichiang thin
Adhesive layer a ni
Silicone PSA, Acrylic PSA, Rubber hmanga siam PSA a ni
Tape pumpui temperature limit leh chemical resistance chunglam a set a; a tlangpuiin performance link chak lo ber a ni
Critical insight: PTFE ngei pawh hian -190°C atanga 260°C thleng hian hun rei tak chhung chu stably-in hna a thawk thei a, mahse adhesive hi performance bottleneck a ni Adhesive hi PTFE surface chauh ni lovin service environment tak tak atanga thlirin thlang rawh.
Conventional acrylic emaw rubber emaw hmanga siam a ni
Pawm theih, mahse chemical environment-ah chuan a tlem hle
Aokai PTFE note: 200°C+-a hman tur chuan acrylic PSA hi pawm theih a ni lo – a chhe ang a, a nem ang a, tape a peeling ang. Silicone hi duhthlan tur awmchhun a ni.
2. Chemical media – adhesive leh substrate inkara inmilna
PTFE functional layer hian universal corrosion resistance (molten alkali metals leh high-temperature high-pressure fluorine gas tih loh) a nei ve tho. Mahse, chemical media chu tape kil atang hian a lut a, adhesive layer chu a tichhe nghal vek a ni.
Chemical Media hmanga thil tih a ni
Adhesive hman tur a ni
Fimkhurna
Inorganic acid chak tak (HCl, H2SO4 ≤80%), alkali chak tak (NaOH), brine, tui hnim hring
Silicone PSA hmanga siam a ni
Tolerance tha tak a ni; stable protective cladding a siam a
Organic solvent (ketones, esters, benzene, toluene), oil, fuel, oxidizing acid chak tak (HNO3, concentrated H2SO4), glacial acetic acid te a awm bawk
Acrylic PSA (solvent-resistant grade) hmanga siam a ni.
Organic solvent-ah silicone a lo hring chhuak a; acrylic hman a tha a, mahse temperature rating (a tlangpuiin ≤150°C) tih finfiah rawh.
Steam sang tak + acid/alkali concentration sang tak (exposure danglam) .
Silicone PSA siam danglam + multi-layer winding hmanga siam a ni
Thil awmdan khauh ber – silicone hian hydrolyze a siam thei; multi-layer winding hmangin tichak rawh
Organic solvent hmanga temperature 150°C aia sang tan: Mechanical fixing emaw glue-free heat-shrink pure PTFE tape/tubing emaw hmang rawh.
Application Scenario leh a inmil Substrate thlan dan
Dilna tur Scenario a ni
Substrate atana rawtna siam
Chhan
Pipe pawn lam bang anti-corrosion & anti-stick coating (splash material a punkhawm loh nan)
PTFE hmanga khuh fiberglass puan chakna sang tak (brown/black)
Wear-resistant, mittui tlak lohna; a thuk zawng chu 0.13-0.25mm a ni a; repeated winding atan a tha a, conformability tha tak a ni
Vessel chhung lam bang & flange chunglam anti-stick liner
Transparent pure PTFE film a ni
Ultra-smooth non-stick surface, fiber wicking risk awm lo; flat leh curved surface lian tak tak tan pawh a tha hle
Mixing shaft & roller hmanga khuh a ni
PTFE fiberglass puan, high-tack silicone adhesive hmanga siam a ni
Tension winding a thlawp a; fiberglass substrate hian tensile strength sang tak a pe a, rotation laiin deformation a veng thei bawk
Thread sealing leh gasket thlak dan tur
Machine hmanga siam PTFE film tape thianghlim tak
Gap awmte luah khat turin PTFE cold flow property a hmang a; fiberglass tel lo tape a ngai a ni
Manholes & sight glass hmanga acid dahna tank tha tak tak te
PTFE film / fiberglass puan thianghlim tak, chemical laka invenna acrylic adhesive hmanga siam a ni
Film thianghlim hian corrosive media a isolated a; fiberglass puan hian toughness a ti tha a; lap joint-ah hian multi-layer reinforcement a ngai a ni
In sak leh himna atana kaihhruaina pawimawh tak tak
1. Surface pretreatment – inzawmna bulpui
Degreasing kimchang, rust removal, leh drying te a ngai a ni. Acetone emaw alcohol emaw hmangin a chungte chu phihfai la, chumi hnuah quick flame baking hmangin bonding strength tihpun rawh. Hei hian bawlhhlawh a paih chhuak a, metal surface chu a activate a, maximum adhesion a awm theih nan.
2. Overlap leh winding layer te
aia tlem lo a ngai a ni. winding layer 2-3 Chemical protection atan hian circle khatah 50% overlap neiin Tape tawp chu media hmanga adhesive penetration hnua full peeling awm loh nan matching PTFE tape emaw stainless steel cable tie hmanga tihchak a ngai a ni.
3. Safety threshold – PTFE tape hi engtikah nge pumpelh vek tur
A hnuaia extreme media te tan hian organic adhesives nei tape zawng zawng hi a him lo :
Hydrogen fluoride (HF) hmanga siam a ni.
Alkali chak tak (>80%) concentration sang tak boiling .
Chlorine trifluoride (ClF3) hmanga siam a ni.
A dang: Full PTFE lining emaw welded fixed cladding (adhesive tel lo) emaw ah switch rawh.
4. Anti-static leh puak thei lo tura hmalakna
Pipeline hian kang thei thil a thlen a, static accumulation a awm thei a nih chuan, static charge him taka tihbo nan anti-static PTFE tape (a tlangpuiin carbon filler hmanga dum dum, surface resistivity 106-109 Ω) thlang rawh.
Thupui – PTFE Tape thlan dan Chemical hmanna atana kaihhruaina rang tak
I environment chu...
Thlang...
Hawisan...
200-260°C a ni a, acid/alkali/steam a ni
Silicone PSA + fiberglass hmanga siam a ni
Acrylic PSA (a chhe dawn) .
120-150°C, organic solvent hmanga siam a ni
Acrylic PSA (solvent-resistant) hmanga siam a ni.
Silicone PSA (solvent-a a hring) 1.1.
>150°C, organic solvent hmanga siam a ni
PTFE film thianghlim + mechanical fixing a ni
Adhesive tape eng pawh
HF, a lum >80% alkali, ClF3
PTFE chauh hmanga lining (adhesive awm lo) .
Organic adhesive hmanga siam tape eng pawh
Thil kang thei, static risk
Anti-static (carbon-a khat) PTFE tape hmanga siam a ni
Conductive ni lo standard tape a ni
Thread sealing, gap tihpun
Skived PTFE film tape thianghlim tak a ni
Fiberglass hmanga tihchak tape
Aokai PTFE hian chemical hmanna tur PTFE tape chi hrang hrang a pe chhuak vek a – high-temp acid/alkali service atan silicone PSA, solvent resistance atan acrylic PSA, leh anti-static grades te a pe a ni. I chemical media, temperature range, leh mechanical mamawh te nen min rawn biak la, i duh angin i thlang thei ang.
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