Nkɛntɛnso a Nneɛma a Atwa Yɛn Ho Ahyia Ho Nsuo Nya wɔ PTFE Emulsion Impregnation so

Wɔ PTFE ntama a ɛyɛ hyew kɛse a Jiangsu Aokai New Materials yɛ no ankasa mu no, wɔtaa hwɛ nneɛma a atwa yɛn ho ahyia mu nwini so wɔ ɔkwan pɔtee bi a ɛyɛ 40%–60% RH , a wɔde ɔhyew ho nhyehyɛe ka ho. Wɔayɛ nsakrae wɔ evaporation rate no mu ma ɛba fam kakra sen capillary transport rate a nsu a ɛwɔ emulsion no mu wɔ capillary network no mu, hwɛ hu sɛ emulsion no bɛkɔ mu koraa na ayɛ leveling bere a wonya PTFE sintered films a sintɔ biara nni mu, a ɛyɛ den yiye.

Nkɛntɛnso titiriw a nneɛma a atwa yɛn ho ahyia a ɛyɛ nwini nya wɔ PTFE emulsion impregnation so no da nsu a ɛyɛ hyew dodow ne emulsion a ɛyɛ den ntam kari pɛ a ɛyɛ nnam no mu. PTFE emulsion taa yɛ nsu a ɛnyɛ Newtonian a PTFE resin asinasin (dispersed phase), surfactants, stabilizers, ne nsu (continuous phase) na ɛyɛ. Sɛ́ nneɛma a atwa yɛn ho ahyia no, nsu a ɛyɛ nwini hwɛ sɛnea aduru a wɔde yɛ aduru (nsu) no yɛ hyew no so, na ɛde nkɛntɛnso atitiriw ba sɛnea edidi so yi:

1. Nkɛntɛnso Titiriw a Ɛwɔ Nkɛntɛnso Ho Adesua So

Impregnation stage no hwehwɛ sɛ emulsion no hyɛn mu yiye wɔ pores anaa fiber gaps a ɛwɔ substrate no mu (sɛ nhwɛso no, glass fiber ntama, dade mesh).

Low humidity environment : Nsuo no yɛ hyew ntɛmntɛm dodo, na ɛma emulsion no 'surface-dry' ntɛmntɛm wɔ substrate no so. Eyi ma ɛda adi sɛ emulsion no viscosity wɔ interface no kɔ soro kɛse, na esiw capillary penetration of resin particles kwan kɔ substrate a emu dɔ no mu na ɛde 'insuficient impregnation' — kyerɛ sɛ, mframa kotoku a aka wɔ substrate no mu ba. Saa bere yi nyinaa, nsuo a ɛyɛ hyew ntɛmntɛm yi ɔhyew pii fi hɔ, a ebetumi ama mpɔtam hɔ hyew akɔ fam mpofirim, na ama emulsion no ayɛ basaa wɔ thermodynamically na ama surfactant precipitation aba, na ɛde 'orange peel' anaasɛ ne kɛse a ɛnsɛ wɔ layer a wɔde ahyɛ mu no mu.

High humidity environment : Wɔsiw nsuo a ɛyɛ nwini ano, na emulsion no kɔ so tra tebea a ɛyɛ nsuo a ɛnyɛ den pii mu wɔ substrate no so bere tenten dodo. Wɔ nneɛma a ɛwɔ fam a ɛda hɔ anaasɛ ɛkɔ fam fam no, ɛnyɛ den sɛ ɛbɛhwe ase wɔ tumi a ɛtwe ade ba fam ase; wɔ substrates a hydrascopic kɛse fam no, nsu a ɛyɛ nwini kɛse betumi asiw mframa a ɛbɛkɔ substrate no mu kwan, na ayɛ microbubbles a ɛbɛyɛ pinhole sintɔ bere a sintering a edi hɔ no.

2. Nkɛntɛnso Titiriw a Ɛwɔ Sini a Etwa To a Wɔyɛ no Su So

PTFE film a wɔyɛ no taa fa akwan abien ho: drying (nsu a woyi fi hɔ) ne sintering a ɛyɛ hyew kɛse (particle melting). Nsuo a ɛyɛ nwini no nya nipadua a ɛyɛ ahabammono no nhyehyɛe so nkɛntɛnso titiriw bere a ɛreyow, a 'wonya fi awo mu' kɔ sintered film a etwa to no mu.

Mpaapaemu ne emu nhyɛso : Film formation a PTFE resin asinasin gyina capillary nhyɛso bere a nsu evaporation de mia nneɛma nketenkete ma ayɛ dense packed layer. Nsuo a ɛyɛ nwini a ɛba fam dodo ma ntini nketenkete no nhyɛso a ɛkɔ soro no kɔ soro kɛse na ɛyow ntɛmntɛm dodo, na ɛde mu nhyɛso kɛse a ɛtwetwe nneɛma ba nipadua a ɛyɛ ahabammono no mu. Esiane sɛ PTFE nni tumi a ɛsa ne ho yare ansa na ayɛ sintering nti, nhyɛso a ɛte saa no de mpaapaemu nketenkete anaa mpaapaemu kɛse ba nipadua a ɛyɛ ahabammono no mu tẽẽ. Wontumi nyi mpaapaemu yi mfi hɔ bere a wɔayɛ no sintering akyi, na ɛma film no pue anaasɛ mfiri ahoɔden so tew.

Surfactant migration and residue : Surfactants (te sɛ nea wɔde si perfluorooctanoic acid ananmu) a ɛwɔ PTFE emulsions a wɔtɔn mu no tu kɔ baabi foforo bere a nsu no yɛ hyew bere a ɛreyow no. Tebea a ɛhɔ yɛ nwini kɛse no trɛw mfɛnsere a ɛyow no mu, na ɛma bere a ɛdɔɔso ma nneɛma a ɛma nsu yɛ hyew no boaboa ano wɔ soro, na ɛyɛ 'surface oil slick' anaasɛ honam ani a ɛyɛ den. Sɛ saa ɔfa yi ansɛe koraa anaasɛ ansɛe wɔ sintering fã a edi kan no mu a, ɛbɛyɛ carbonized na wɔde ahyɛ film no mu, na ɛbɛma ayɛ kɔkɔɔ, ayɛ density so atew, na adhesion a ɛda PTFE ne substrate no ntam no ayɛ mmerɛw kɛse (interfacial bonding a enye esiane efĩ a wɔayi afi afoforo ho nti).

Film density ne porosity : Ɛsɛ sɛ PTFE film a eye sen biara no yɛ pinhole-free na ɛyɛ den. Nsu a ɛyɛ nwini a wɔmfa nni dwuma yiye a ɛde nsu a aka ba no yɛ asiane kɛse. Wɔ nsuo a ɛyɛ nwini kɛseɛ ase no, sɛ wɔannyi nsuo no mfi hɔ koraa wɔ ɔhyew ne nwosoɔ fã no mu a, nsuo a aka no yɛ nwini ntɛm ara wɔ sintering a ɛdi hɔ (bɛyɛ 327–400°C) a ne kɛseɛ trɛw kɛseɛ, na ɛma mframa a ɛbɔ anaa interlayer blisters ba wɔ film a ɛyɛ fã bi a ayɛ nwini no mu. Nea ɛne eyi bɔ abira no, wɔ nsu a ɛyɛ nwini a ɛba fam koraa mu no, honam ani a ɛyow ntɛmntɛm no ma honam ani yɛ nea wɔatoto mu a esiw nsu a ɛwɔ mu no kwan, na ɛde akisikuru anaasɛ delamination nso ba bere a wɔreyɛ sintering esiane nsu a ɛyɛ hyew a aboaboa ano nti.

Wɔ nnyinasosɛm mu no, nkɛntɛnso a nneɛma a atwa yɛn ho ahyia a ɛyɛ nwini nya wɔ PTFE emulsion dwumadie so titire no yɛ ade a wɔde wɔn ho gye mu wɔ nsuo a ɛyɛ nwini mu:

·  Nsuo a ɛba fam (ɔyow dodo)  taa ma: nsuo a ɛkɔ mu no nyɛ papa, ɛsiw leveling (shrinkage cavities), mpaapaemu a ɛyow, ne surfactant nkaeɛ a ɛnkyɛ.

·  Nsuo a ɛkɔ soro (nsuo a ɛboro so)  taa ma: ɛyɛ mmerɛw, pinholes a ɛkɔ soro, surfactant a ɛsensɛn nsuo so dodo, blistering wɔ sintering akyi, ne adhesion a ɛso tew.

Nsɛm a ɛwɔ atifi hɔ no yɛ nea Jiangsu Aokai New Materials Technology Co., Ltd. na ɛde mae.

Sɛ wopɛ parameters a ɛkɔ akyiri, application scenarios ne customized solutions of our full product range, a PTFE high-temperature ntama, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless laminating belts, biako-afã PTFE ntama, high-temperature resistant conveyor belts, high-temperature resistant glass fiber fabric, ne nea ɛkeka ho, ka ho. yɛsrɛ wo, di yɛn ho nkɔmmɔ:

·  Ɔsom Ntrɛwmu: Owura Guo 18944819998

·  Owura Liu 13705266308 ɔkyerɛwee

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