Wetin De Mek Krak Krak na di PTFE Impregnation Proses?

As profeshɔnal sɔs manifakta fɔ PTFE ay-tɛmpracha fabrik, Jiangsu Aokai Nyu Matirial go ɛksplen di kɔz dɛm fɔ krak insay glas fayba klos afta impregnashɔn wit PTFE (polytetrafluoroethylene) emulshɔn. Dis na kɔmɔn prɔses ishu insay kɔmpɔzit matirial manufakchurin, we kin apin we dɛn de drɛy (we dɛn de pul mɔstɔ ɛn sɔfaynt dɛn) ɔ we dɛn de sinta ay-tɛmpracha (we dɛn de mɛlt PTFE patikyula dɛn insay wan kɔntinyu film).

1. Sivεr Mismatch כf Tεmכl εkspεnsכn Kכfishεnt dεm

Dis na di men tin we kin mek pɔsin gɛt bɔdi.

big difrεns de pan tεmral εkspεns kכfishεnt bitwin glas fayba εn PTFE:di linya εkspεns kכfishεnt fכ glas fayba na lεk 5×10−6/°C ,we di wan fכ PTFE na bכt 100×10−6/°C to 200×10−6/°C  (roughly 20 tεm di wan fכ glas fayba).

di tεm we i de kol (frכm wan sintering tεmprachכ we de arawnd 380°C–400°C dכn to rum tεmprachכ), PTFE de shrink fa mכr sכmtεm pas di glas fayba fכm. Sins glas fayba klos de akt lεk rigid skel, PTFE de kכnstrakt di tεm we i de shrink, we de jεnarεt sכbstanshכl intanεt tεnsil tεmכl strεs. we dis strεs pas di tεnsil trεnk fכ di PTFE film כ di intafεshal bכndin trεnk bitwin PTFE εn glas fayba, krak krak de apin fכ rilis di strεs.

2. Improper Kontrol fɔ Dray ɛn Sintering Prɔses

di hεt paramita dεm fכ di impregnated mεtirial de afekt krak krak dεn wan dεm:

·  Eksεsiv fast hεtin rεt : εspεshali na arawnd 100°C (rapid vaporization of moisture) εn 200°C–250°C (dikompozishכn כf sכfaynt dεm na di emulshכn εn di kristalin transishכn zon bifo PTFE sintering). Rapid hεt de mek intanεt strεs εn gas impak frכm instantaneous volatilization כf sכlvεnt εn aditiv dεm, we de rεsult in kכt krak.

·  Eksεsiv fast kul rεt : Dayrekt εkspכzכn to ambiεnt εya fכ rεpid kol afta sinterin de mek intens instant shrinkage strεs biכs fכ big tεmprachכ difrεns, we rεdi indyuz fayn nεtwכk krak.

·  Tεmprachכ fכ hכy pasmak כ ova lכng sintering tεm : Dis de mek di PTFE mכlikul wet dεgradashכn εn fכ fכm pasmak, we de mek di mεtirial mכr susεptibl fכ krak כnda strεs.

3. Isyu dεm na Impregnashכn Prכsεs εn Emulshכn Kכnsantreshכn

di tik, yunifom εn pεnεtreshכn dip fכ di impregnated layεr de afekt krak sεnsitiviti dεm dεn wan:

·  Tik pasmak wan impregnashɔn layt : Fɔ fɛn tik ɔ prodakshɔn efyushɔn, dɛn kin put wan ɔva tik PTFE kɔtin insay wan pas. We dɛn de drɛy ɛn sinta, tik kɔtin gɛt lɔng rod fɔ pul sɔlvɛnt ɛn i de ɔnda big volyumɛtrik shrinkage (PTFE ɛmulshɔn tipikli gɛt sɔlid kɔntinyu we na lɛk 60%, we min se dɛn fɔ pul lɛk 40% mɔstɔ), we kin mek bɔku tɛm di sɔfays krak.

·  Uneven impregnation : Lokalized eksesiv PTFE bildup כ uneven emulsion distribushכn pan di fabrik sεf de lid to kכnsantreyt shrinkage strεs.

·  Insufficient emulsion penetration : If glas fayba klos nɔ de waks ɔ nɔ trit am fayn fayn wan, PTFE emulshɔn nɔ de fulɔp fɔ go insay fayv bɔndɛl ɛn i jɔs de fɔm wan supafishal 'skin film'. Dis film gɛt wik ankɔr wit di sabstret ɛn i kin tɛnd fɔ detach ɔ krak we dɛn ɔt am.

4. Tin dɛn we gɛt fɔ du wit di sabstret

·  Glas fayba klos we nɔ gɛt waks : Glas fayv klos gɛt sayzin ɛjɛn (parafin, ɛpoksi, ɛn ɔda tin dɛn) frɔm di we aw dɛn de mek am. If yu nɔ gɛt ay-tɛmpracha diwaks ɔ kemikal klin bifo dɛn impregnashɔn, dɛn ɔrganik tin ya kin kabɔnayz ɛn volatilayz we dɛn de sinta afta dat, we kin mek gas we kin brok di kɔtin ɔ wik di bonding bitwin PTFE ɛn glas fayba, we kin mek krak krak.

·  Strukchɔ ɛn tiknɛs fɔ glas fayba klos : Tik ɛn dens glas fayba klos (lɛk tik satin fabrik) de sho ay rigiditi ɛn strɔng ristrayn pan PTFE shrinkage. pan tap dat, dip grov dεm bitwin di fayv bכndεl dεm kin mek strεs kכnsantreshכn εn krak na di grov ed dεm we dεn de dry.

Di infɔmeshɔn we de ɔp na Jiangsu Aokai Nyu Matirial Tɛknɔlɔji Kɔmni, Ltd.

Fɔ ditayl paramita, aplikeshɔn sɛnɛriɔ ɛn kɔstɔmayz sɔlvishɔn fɔ wi ful prodak rɛnj — inklud PTFE ay-tɛmpracha klos, PTFE ay-tɛmpracha tep, PTFE ay-tɛmpracha mɛsh bɛlt, simlɛs bɛlt fɔ bonding mashin dɛn, singl-sayd PTFE klos, ay-tɛmpracha rɛsistant kɔnvaysɔ bɛlt, ay-tɛmpracha rɛsistant glas fayv klos ɛn ɔda related products — duya fil fri fɔ kɔntakt wi:

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