I fold tawh a nih chuan PTFE-coated fiberglass fabric sharply, crease line dum a rawn lang nghal tih i hmu mai thei. Chu hmunah chuan fold leh la, puan chu a chhe thei bawk.
Hei hi chhiatna a ni lo – thil awm dan (inherent behavior) a ni. PTFE high-temperature fabric hian lumna, chemical leh sticking te a do thiam hle a, mahse flex resistance (repeated folding endurance) hi a mechanical property chak lo ber a ni.
Aokai PTFE hian flex life hi thickness leh weave tam takah a test tawh a ni. He thuziak hian puan chu a fold ṭhat loh chhan a sawifiah a, thil dang nena a khaikhin a, a tihkhawtlai theihna tur kawng ṭangkai tak tak a pe bawk.
A bulpui ber chu fiberglass substrate , PTFE coating a ni lo.
1. Fiberglass – chak mahse a chhe thei
Glass fiber hian tensile strength sang tak nei mahse break-ah elongation a nei tlem hle (a tlangpuiin 2-4%). Bent nawn leh a nih chuan filaments pakhat zel chu hahna leh fracture a tawk thin. Fiber tlemte a chhe tawh chuan stress chu a la awmte chungah a innghat a, chu chuan a darh chak hle a ni – puan chu awlsam takin a chhe thei a ni.
2. PTFE coating – buffer tlemte chauh a awm
PTFE layer hian fiber strands te chu a lubricate a, internal friction a ti tlem a, pliability pawh a ti tha deuh bawk. Mahse, glass brittleness chu a ti bo thei lo. Fiber rupture chu margin tlemte chauhin a tikhawtlai.
Engtin Nge Thil Dangte nen A Inthlauhna?
Bungrua
Flex laka invenna (Relative) 1.1.
Engati nge
PTFE-a khuh fiberglass (he thuziak hi) .
Rethei
Brittle glass fibers te chu bending nawn leh hnuah a crack thin
PTFE coating hian inter-fiber abrasion a tihziaawm avangin coated hi a tha zawk deuh
Aramid puan (eg, Nomex) hmanga siam a ni.
Tha
Organic fibers hi a pianphungah chuan a flexible zawk
PPS emaw polyester puan emaw hmanga siam a ni
Tha
Heat resistance hniam zawk mahse flex life a tha zawk hle
Key takeaway: PTFE-coated fiberglass hi flex resistance atan high-temperature fabric zingah mid-to-lower end-ah a thu a. Bare glass aiin a tha zawk a, mahse pure PTFE film aiin a chhe zawk daih.
Flex Resistance nghawng thei thil pawimawh tak tak
1. Thickness – thil pawimawh ber
Thickness a ni
Folding Endurance tlemte chauh a ni
Hlawhchhamna Mode a awm
0.08mm a ni
Za tam tak atanga ~1,000 vel a ni
Zawi zawiin micro-cracking a ni
0.13mm a ni
Dozens atanga za engemaw zat thleng
Sharp fold hnuah white crease a awm
0.25mm leh a chunglam a ni
Dozens of folds – cycle 50 chhunga cracking hmuh theih
Brittle fracture, coating delamination a awm bawk
Rule of thumb: Puan thinner zawkte chu a flex tha zawk. Bending repeated ngai application atan chuan i mamawh dang (strength, temperature) phuhruk thei tur grade thinnest kha tarlang rawh.
2. Weave siam dan
Satin weave – float sei zawk hian yarn te chu a slide tlem tir a, bending stress a sem darh thin. Plain weave aiin flex life a tha zawk.
Plain weave – tight inzawmkhawm point lock yarns; stress chu intersection-ah a concentrate a ni. Flex resistance a chhe zawk.
3. Hnathawh dan lum leh vawt
Temperature sang (200-260°C) ah chuan PTFE coating chu a nem a, fiberglass mechanical strength a tlahniam bawk. Hei hian flex fatigue resistance a tichhe zual hle. I application-ah hian heat sang leh bending tam tak a awm a nih chuan dam rei zawk beisei ang che.
4. Bending radius a ni
Radius lian zawk = dam rei zawk. Sharp creasing (radius <1mm) hian dead folds a siam a, instantaneous fiber breakage a awm bawk. Guide rollers tan chuan practical diameter lian ber hmang ang che. Rough guide angin roller diameter tlem ber chu puan thickness 10-20x a ni.
Internal test data (Aokai PTFE) : 0.13mm satin weave fabric tan chuan 10mm mandrel chunga bending hian visible cracking hmain cycle 500-800 vel a thleng thei. 5mm mandrel aiin cycle 100-150 ah a tlahniam. 2mm mandrel (sharp crease) aia tam chuan cycle 20 chhungin a hlawhchham a ni.
Practical Application atana rawtna te
I hmanruain reciprocating bending a mamawh fo chuan – hetiang hi:
Frequency sang tak nei welder drive belt hmanga siam a ni
Tension belt hmanga pulley te te inkhuh
Conveyor belt te chu a turn nasat em avangin demolding
Thil pathum i nei a:
1. Option 1 – PTFE fabric thlan dan chu a huam chin chhungah optimize
Pure PTFE film (skived) hian flex resistance danglam tak a nei a. Mahse, fiberglass reinforcement a tlakchham avangin tensile strength a nei tlem zawk a, tension hnuaiah pawh a tear awlsam zawk. Light-duty, low-tension bending application atan a tha hle.
3. Thil tih theih 3 – aramid emaw organic fiber puan dang emaw hmang rawh
Aramid (eg, Nomex) emaw PPS fabric PTFE hmanga khuh hian glass-based PTFE fabric aiin flex life tha zawk a pe a ni. The trade-off: continuous temperature resistance hniam zawk (a tlangpuiin ≤200°C) leh surface property hrang hrang. 200°C hnuaia bending rit tak neia hman tur chuan heng thil dang te hi ngaihtuah rawh.
Aokai PTFE hian dilna angin PTFE-coated aramid fabric a siam chhuak thin. Temperature leh flex data hriat duh tan min rawn biak theih reng e.
Thuhmahruai – A huam chin hre la, chutiang chuan Design rawh
PTFE high-temperature fabric hian tension, heat sang (260°C), leh chemical attack lakah a ding tha hle. Mahse a flex resistance tha lo chu constraint dik tak a ni. Rubber belt emaw pure PTFE film ang chi sharp repeated folding a tuar thei lo.
Bending a nêm emaw, a awm lo emaw hmunah hmang rawh. Sharp emaw frequent bending tih loh theih lohna hmunah chuan thinner-ah kal la, satin weave hmang la, bending radius tipung la, material switch rawh.
Aokai PTFE hian kan fabric grade zawng zawng tan flex test data a pe vek a. I application-a bending demands angin thickness leh weave dik tak thlan turin kan pui thei che a ni.
