Mutafura yemaparameta ezvigadzirwa zvesilicone foam, iyo inoita seisinganzwisisike kukosha kwe "volume resistivity" inowanzo furatirwa nevasiri-nyanzvi. Zvakadaro, kune wese mainjiniya emagetsi, mugadziri wezvigadzirwa, nevashandi vanodzora kunaka, haizi nhamba yakapusa, asi core soul parameter inotaridza kuti chigadzirwa chine njodzi yekuchengetedzwa kwemagetsi uye kuvimbika kwekushanda kwenguva refu-.
Sezvo mashandiro acho achitungamira kuSanpu Silicone, tinogashira kubvunza zuva nezuva kubva kune vatengi maererano nekusarudza zvinhu. Nhasi, ndinoda kukurukura nevezera reindasitiri kuti sei 'kupokana kwevhoriyamu' iri yakakosha 'yakaoma metric' yatinofanira kujekesa kutanga mukutaurirana nevatengi.
一. Chii chinonzi volume resistivity? Tsanangudzo yakakosha yakakosha
Kutanga, ngatijekese pfungwa inokosha. Volume resistivity (Vρ), inowanzopimwa ne Ω·cm, inotsanangura kusamira kwechinhu kumagetsi anoyerera nemukati mevhoriyamu yacho. Ichi chemukati chivakwa chinoramba chichienderana zvisinei nechimiro chechinhu kana saizi.
Enzaniso iri nyore:
Funga nezvesilicone foam sesiponji.
High volume resistivity (eg{. 10^15 Ω·cm): seyakachena "insulating sponge", ikozvino yakaoma zvikuru kupinda.
Yakaderera vhoriyamu resistivity (eg{. 10^3 Ω·cm): se "conductive sponge" yakanyikwa mumvura ine munyu, yazvino inogona kuyerera nyore nyore..
Kune yakavharwa {{0}sero silicone foam zvinhu, izvo zvinoshandiswa zvakanyanya mundima yemagetsi, tiri kutsvaga yakakwirira kwazvo yeresitorendi, kuti ive yakanaka "inodzivirira siponji".
2. Nei ichikosha zvikuru? Ongororo yemabasa matatu makuru
1. "Muchengeti" wekuchengetedzwa kwemagetsi: Kudzivirira kubuda, pfupi pfupi uye kuparara
Iri ndiro basa rakananga uye rakakosha rekupokana kwevhoriyamu. Kana chigadzirwa chako chichibatanidza kufambiswa kwemagetsi kana kuchinjanisa masaini, makondukita ane akasiyana anogona kunge ari mamirimita chete{1}}chinhambwe kubva kune chimwe.
High{{0}voltage application scenarios: Mumabhatiri packs uye maelectronic control units emotokari itsva dzine simba, magetsi anoshanda anogona kusvika kumazana emavolts. Chero kuvuza kubva kumagaskets kana kuvhara mhete kunogona kukonzeresa kutadza kwehurongwa, kupisa, kana kunyange njodzi dzekuchengetedza. Yakakwira-vhoriyamu resistivity silicone foam material inopa yekutanga yakasimba insulation barrier munzvimbo ino.
Mamiriro akaderera emagetsi emagetsi: Kunyangwe mumaseketi emagetsi emafoni uye midziyo inopfekwa, kutadza kwekudzivirira kwezvinhu kunotungamira kupfupi uye kupisa kwechikamu, zvichikonzera kukuvara kusingadzokerike.
Mhedziso: Yakakwira vhoriyamu kuramba kukosha ndiro ibwe rekona kuti chigadzirwa chipfuure zvitupa zvekuchengetedza (senge UL uye CE) uye ive nechokwadi chekuchengetedzwa kwemushandisi.
2. Iyo "stabilizer" yechiratidzo chekuvimbika: kuve nechokwadi chekufambisa data kwakarurama
Mumidziyo yemazuvano yakakwirira-yenguva refu uye{1}}inomhanya-mhanya (sezviteshi zvepasi pe5G nemaseva), silicone foam material inowanzo shandiswa sema compression gasket pasi peelectromagnetic shield.
Mhedzisiro yekurasikirwa kwedielectric: Kana iyo vhoriyamu resistivity yezvinhu yakadzikira, zvinoreva kuti ichaburitsa kubuda kwezvino pasi pekuita kwemunda wemagetsi, zvichikonzera kushandiswa kwesimba nenzira yekupisa, iyo inonzi "dielectric kurasikirwa".
Signal attenuation and crosstalk: Kurasika kwakanyanyisa kwedielectric kunodzikisira-frequency sign quality, zvichikonzera kudzikama, kunonotsa, uye kunyange crosstalk pakati pemitsara yemasaini ari pedyo. Zvinhu chete zvine high volume resistivity zvinogona kuchengetedza yakagadzikana dielectric zvivakwa, ichiita se 'pachena' insulator kuchengetedza chiratidzo kuchena uye kuvimbika.
3. "Chionioni chechokwadi" chemhando yezvinhu: Kuratidzira kuchena uye kuenderana kwemaitiro
Vhoriyamu resistivity inonyanya kutarisisa kune yemukati micro defects uye kusvibiswa mumidziyo. Inoita semutongi akasimba, kuedza kuchena kwezvinhu.
Kusachena chiratidzo: kana ionic tsvina, simbi zvimedu kana asina kuchena mafirita akasanganiswa mune yekugadzira maitiro, anobva angooneka muvhoriyamu resistivity, zvichikonzera kudonha kwakapinza mukukosha kwayo.
Maitiro ekuenderana vimbiso: Isu tinova nechokwadi chekuita kunoenderana zvakanyanya pamabhechi ese nekuitisa vhoriyamu resistivity batch yekuyedza. Yakagadzikana uye yakakwira vhoriyamu resistivity inoratidza yakavimbika yekugovera cheni uye yakasarudzika kugadzira.
3. Ungasarudza sei chigadzirwa chakakodzera chebhizinesi rako? Mazano ekusarudza opareta
Mukusarudza chaiko, tinokurudzira kuti vatengi vatevedze maitiro anotevera:
Rondedzera iyo insulation level yemamiriro ekushandisa:
Strict level (high pressure, high frequency): high performance closed cell foam with volume resistivity>10^14 Ω·cm inofanira kusarudzwa.
Standard level (consumer electronics, conventional sealing): volume resistivity>10^12 Ω·cm ndiyo yekutanga.
Chenjerera kune zvakatipoteredza: kana nharaunda yekushandisa iri hunyoro, zvinodikanwa kusarudza yakavharwa pore chimiro ine yakaderera mvura yekunyudza mwero, nekuti kunyudzwa kwemvura kuchashatisa zvakanyanya vhoriyamu resistative.
Nzwisisa pepa re data uye kumbira mushumo webvunzo:
Kumbira zvakatsanangurwa zvechigadzirwa kubva kumutengesi wako uye simbisa yavo yekuyedza zviyero (semuenzaniso, ASTM D257).
Teerera kune mamiriro ebvunzo (tembiricha uye humidity) nekuti anogona zvakanyanya kukanganisa mhinduro dzebvunzo.
Ita ongororo yepanyama:
Kune mapurojekiti akakosha, bvunzo dzakazvimirira dzekuisa bvunzo dzinofanirwa kuitwa pamasampula emidziyo isati yatengwa batch kuti ionekwe pasi pemamiriro ekushanda.