Wɔ adwumayɛ parameters table of silicone foam nneɛma mu no, ɛte sɛ nea "volume resistivity" bo a ɛte sɛ nea ɛyɛ abstract no taa bu wɔn ani gu so denam non{0}}professionals so. Nanso, wɔ ɛlɛtrɔnik mfiridwumayɛfo, nneɛma a wɔyɛ, ne adwumayɛfo a wɔhwɛ nneɛma so yiye biara fam no, ɛnyɛ dodow a ɛyɛ mmerɛw kɛkɛ, na mmom ɛyɛ ɔkra parameter titiriw a ɛkyerɛ ade no anyinam ahoɔden ahobammɔ mfiase ne bere tenten-bere mu adwumayɛ mu ahotoso.
Bere a oprehyɛn ahorow no di anim wɔ Sanpu Silicone no, yenya nsɛmmisa fi afɛfo hɔ da biara da wɔ nneɛma a wɔpaw ho. Ɛnnɛ, mɛpɛ sɛ me ne nnwuma mu atipɛnfo susuw nea enti a ‘volume resistance’ yɛ ‘hard metric’ a ɛho hia a ɛsɛ sɛ yɛma emu da hɔ kan wɔ afɛfo nkitahodi mu.
一. Dɛn ne volume resistivity? Nkyerɛase titiriw a ɛho hia .
Sɛ yɛbɛhyɛ aseɛ a, momma yɛnkyerɛkyerɛ adwene titire no mu. Volume resistivity (Vρ), a wɔtaa susuw wɔ ω·cm mu no kyerɛkyerɛ ade bi a efi awosu mu tumi gyina anyinam ahoɔden a ɛsen fa ne mu no ano. Saa agyapade a ɛwɔ mu yi kɔ so yɛ nea ɛkɔ so daa ɛmfa ho sɛnea nneɛma no te anaa ne kɛse te.
mfatoho a ɛyɛ mmerɛw:
Susuw silicone foam no ho sɛ sponge.
High volume resistivity (sɛ nhwɛso no,{1}}^15 Ω·cm): Te sɛ "insulating sponge" a ɛho tew no, current no yɛ den yiye sɛ wobɛhyɛn mu.
Low volume resistivity (sɛ nhwɛso no,{1}}^3 ω·cm): Te sɛ "conductive sponge" a wɔde ahyɛ nkyene nsu mu no, current no betumi asen ntɛmntɛm afa mu ..
Wɔ closed-cell silicone foam nneɛma, a wɔde di dwuma kɛse wɔ electronic field no, yɛrehwehwɛ resistivity a ɛkorɔn yiye, sɛnea ɛbɛyɛ a ɛbɛyɛ "insulating sponge" a eye kyɛn so.
2. Dɛn nti na ɛho hia saa? Nhwehwɛmu a wɔyɛe wɔ dwumadi atitiriw abiɛsa ho .
1. "Guardian" a ɛyɛ anyinam ahoɔden ahobammɔ: nsu a ɛtwetwe, kwan tiaa ne nea ɛpaapae no ano aduru .
Eyi ne dwuma a ɛyɛ tẽẽ na ɛho hia sen biara a volume resistance di. Sɛ wo product no fa power transmission anaa signal exchange ho a, conductors a ɛwɔ potentials ahodoɔ no betumi ayɛ milimeter nko ara{1}}level distance afiri wɔn ho wɔn ho.
High-voltage application scenarios: Wɔ battery packs ne electronic control units a ɛwɔ ahoɔden kar foforo mu no, adwumayɛ mu ahoɔden betumi adu volt ɔhaha pii ho. Nsu biara a ɛbɛtwetwe afi gasket anaa sealing rings mu no betumi ama nhyehyɛe no adi huammɔ, ayɛ hyew dodo, anaasɛ ahobammɔ ho asiane mpo. High-volume resistivity silicone foam material ma insulation barrier a edi kan a ɛyɛ den wɔ saa tebea yi mu.
Low voltage sensitive scenarios: Wɔ low voltage circuits a ɛwɔ mobile phones ne wearable devices mu mpo no, insulation huammɔdi a ɛwɔ nneɛma mu no nso bɛma short circuit ne component hyew, na ɛde ɔsɛe a wontumi nsakra no aba.
Awieeɛ: Boɔ a ɛkorɔn a ɛko tia adeɛ no yɛ tweatiboɔ ma adeɛ bi a ɛbɛtwa ahobanbɔ adansedie (te sɛ UL ne CE) na ahwɛ ama wɔn a wɔde di dwuma no anya ahobanbɔ.
2. "Stabilizer" a ɛwɔ sɛnkyerɛnne mudi mu kura: hwɛ a wɔhwɛ hu sɛ data a ɛyɛ pɛpɛɛpɛ .
Wɔ nnɛyi soro-frequency ne soro-ahoɔhare nkitahodi mfiri (te sɛ 5G base stations ne servers), silicone foam ade taa yɛ de di dwuma sɛ compression gasket wɔ electromagnetic shield ase.
Ntini a ɛde dielectric loss ba: Sɛ volume resistivity a ɛwɔ ade no mu no sua a, ɛkyerɛ sɛ ɛbɛma leakage current aba wɔ electric field adeyɛ ase, na ɛde ahoɔden a wɔde di dwuma wɔ ɔhyew kwan so, a wɔfrɛ no "dielectric loss" aba.
Signal attenuation ne crosstalk: dielectric loss a ɛboro so no sɛe kɛse-mpɛn dodow sɛnkyerɛnne no su, na ɛde atenuation, delay, ne mpo crosstalk ba signal lines a ɛbɛn no ntam. Nneɛma a ɛwɔ volume resistivity a ɛkorɔn nkutoo na ebetumi akura dielectric su ahorow a ɛyɛ den mu, ayɛ adwuma sɛ insulator a ‘ɛda adi’ de akora sɛnkyerɛnne ahotew ne nokwaredi so.
3. "Nokware Ahwehwɛ" ma honam fam su: ɛda ahotew ne nhyehyɛe a ɛkɔ so pɛpɛɛpɛ adi .
Volume resistivity yɛ nea ɛyɛ mmerɛw kɛse wɔ micro sintɔ ne efĩ a ɛwɔ nneɛma mu no ho. Ɛyɛ adwuma te sɛ ɔtemmufo a ɔyɛ katee, a ɛsɔ nneɛma a ɛho tew hwɛ.
efĩ ho nsɛnkyerɛnne: Sɛ wɔde ionic efĩ, dade mu nneɛma nketenkete anaasɛ nneɛma a ɛho ntew afrafra wɔ adeyɛ no mu a, ɛbɛda adi ntɛm ara wɔ volume resistivity no mu, na ɛde ne bo a ɛsom no so atew kɛse aba.
Process consistency assurance: Yɛhwɛ ma adwumayɛ kɔ so pɛpɛɛpɛ wɔ batch nyinaa mu denam volume resistivity batch testing a yɛyɛ so. A stable and high volume resistivity da nneɛma a wɔde ma a wotumi de ho to so ne nneɛma a wɔyɛ a ɛyɛ soronko a wotumi yɛ no adi.
3. Ɔkwan bɛn so na wobɛpaw ade a ɛfata ama w’adwuma? Operator a wɔpaw ho afotu .
Wɔ paw ankasa mu no, yɛhyɛ nyansa sɛ adetɔfo nni nhyehyɛe a edidi so yi akyi:
Kyerɛ insulation level ma application scenario no:
Strict level (high pressure, high frequency): high performance closed cell foam with volume resistivity>10^14 Ω·cm na ɛsɛ sɛ wopaw.
Standard level (consumer electronics, conventional sealing): volume resistivity>10^12 ω·cm ne mfitiaseɛ.
Hwɛ nneɛma a atwa yɛn ho ahyia no yiye: Sɛ application no tebea yɛ nwini a, ɛho hia sɛ wopaw pore structure a wɔato mu a nsu a ɛwɔ mu no sua, efisɛ nsu a ɛtwetwe no bɛbrɛ volume resistivity no ase kɛse.
Te data krataa no ase na bisa sɔhwɛ amanneɛbɔ no:
Bisa nneɛma ho nsɛm a ɛkɔ akyiri fi wo supplier no hɔ na si wɔn sɔhwɛ gyinapɛn ahorow so dua (sɛ nhwɛso no, ASTM D257).
Hwɛ sɔhwɛ tebea horow (ɔhyew ne nsu a ɛyɛ hyew) yiye efisɛ ebetumi anya sɔhwɛ no mu aba so nkɛntɛnso kɛse.
Yɛ honam fam nokwaredi:
Wɔ nnwuma atitiriw ho no, ɛsɛ sɛ wɔyɛ insulation performance tests wɔ material samples so ansa na batch procurement no ayɛ nokware wɔ simulated adwumayɛ tebea mu.