Acrylic vs. Silicone Conformal Coating: Ndi Zovala Zogwirizana Ziti Zoyenera Kwa Inu?

Acrylic ndi silikoni zokutira conformal ndi njira zabwino kwambiri zotetezera zamagetsi ndi zida zina. Koma ndi iti yomwe ili yoyenera kwa inu? Yankho limatengera zinthu zingapo, kuphatikiza zida za chipangizo chanu, mkhalidwe wanu, ndi zomwe mukuyembekeza kukwaniritsa ndi zokutira. M'nkhaniyi, tikambirana mafunso odziwika bwino okhudza zinthu ziwirizi komanso njira yabwino yodzipangira nokha chisankho.

Kodi Conformal Coating ndi chiyani?

Chophimba chofanana ndi filimu yopyapyala yomwe imagwiritsidwa ntchito pamagetsi kuti ateteze ku chilengedwe. Cholinga chachikulu cha zokutira zofananira ndikutchingira zitsulo zowonekera, kuteteza mabwalo afupiafupi ndi dzimbiri. Zovala zofananira zimatha kupangidwa kuchokera kuzinthu zosiyanasiyana, kuphatikiza ma acrylics, silicones, ndi polyurethanes. Mtundu uliwonse wazinthu umakhala ndi zinthu zapadera zomwe zimapangitsa kuti zikhale zocheperako kapena zocheperako pazogwiritsa ntchito zina.

Zovala za Acrylic conformal nthawi zambiri zimapangidwa kuchokera ku ma polima monga polymethyl methacrylate (PMMA). PMMA ndi polima wowonekera, wopanda mtundu wokhala ndi kukana kwamankhwala abwino komanso ma dielectric. Ma Acrylics nthawi zambiri amakhala osavuta kugwiritsa ntchito ndipo amamatira bwino pamagawo osiyanasiyana. Akhoza kuchiritsidwa pa kutentha kochepa, kuwapanga kukhala abwino kwa zipangizo zamakono zamagetsi. Komabe, ma acrylics sakhala olimba ngati zokutira zina zovomerezeka ndipo amatha kukhala achikasu pakapita nthawi.

Zovala zokometsera za silicone zimapangidwa kuchokera ku ma polima a silicone monga polydimethylsiloxane (PDMS). PDMS ndi polima wowoneka bwino, wopanda mtundu wokhala ndi kukana kwamphamvu kwamankhwala komanso ma dielectric. Ma silicones amamatira bwino ku magawo osiyanasiyana ndipo amatha kuchiritsidwa pakatentha kwambiri. Izi zimawapangitsa kukhala abwino kuti azigwiritsidwa ntchito pazotentha kwambiri monga zamagetsi zamagalimoto. Komabe, ma silicones ndi okwera mtengo kuposa mitundu ina ya zokutira conformal.

Ubwino wa Coating Conformal

Pali zabwino zambiri zogwiritsira ntchito zokutira zovomerezeka pa Printed Circuit Board (PCB), kuphatikiza:

1. Chitetezo ku chilengedwe: Chophimba chovomerezeka chimateteza PCB yanu ku malo ovuta omwe angawonekere, kuphatikizapo chinyezi, fumbi, mankhwala ndi kutentha kwambiri. Izi zingathandize kutalikitsa moyo wa PCB wanu.
2. Kuchita bwino kwa magetsi: A zokutira conformal imatha kukonza magwiridwe antchito amagetsi a PCB yanu popereka wosanjikiza wofanana wa dielectric pamwamba pa bolodi. Izi zitha kuthandiza kuchepetsa kusokoneza kwa crosstalk ndi electromagnetic (EMI).
3. Mphamvu zamakina zowonjezera: Chophimba chofananira chimatha kuwonjezera mphamvu zamakina pa PCB yanu, ndikuteteza ku kupsinjika kwakuthupi komanso kuwonongeka kwamphamvu.
4. Kuchepetsa mtengo wopangira: Kugwiritsa ntchito zokutira zofananira kumatha kufewetsa njira yopangira PCB yanu, chifukwa imathetsa kufunikira kwa njira zopangira zodula.
5. Kuchulukitsa kudalirika: Kuphimba kovomerezeka kumatha kupititsa patsogolo kudalirika kwa PCB yanu poteteza kuzinthu zachilengedwe komanso zamagetsi.

Momwe Mungagwiritsire Ntchito Coating Conformal

Njira zingapo zitha kuyika zokutira kovomerezeka ku PCB, kuphatikiza kupopera, kuviika, ndi burashi.

1. Kupaka utoto: Njira yodziwika kwambiri yopaka zokutira zofananira pa PCB. Njirayi imagwiritsa ntchito mfuti yopopera kuti igwiritse ntchito zokutira mofanana pamwamba pa bolodi.
2. Kupaka kwa dip: Kupaka kwa dip kumaphatikizapo kumiza PCB mumtsuko wa zinthu zokutira zofananira, kulola kuti ivale pamwamba pa bolodi.
3. Kupaka burashi: Kupaka burashi kumaphatikizapo kuyika zoyatira zofananira pamwamba pa bolodi.

Ubwino ndi kuipa kwa Acrylic vs Silicone

Posankha zokutira zovomerezeka za PCB yanu, pali zinthu zambiri zomwe muyenera kuziganizira. Acrylic ndi silikoni ndi ziwiri mwazosankha zodziwika bwino za zokutira zofananira, koma chilichonse chili ndi zabwino ndi zoyipa zake. Pano pali kuyang'anitsitsa ubwino ndi kuipa kwa acrylic vs silicone zokutira conformal:

Zovala za Acrylic Conformal:

ubwino:

• Zabwino kukana chinyezi
• Wabwino kusinthasintha
• Kumamatira kwabwino kwa magawo osiyanasiyana
• Nthawi yochiza mwachangu

kuipa:

• Osalimba ngati silikoni
• Mankhwala ena amatha kuwononga.

Silicone Conformal Coating:

ubwino:

• Chinyezi chabwino kwambiri komanso kukana chinyezi
• Makhalidwe abwino a dielectric
• Kutentha kwakukulu kogwiritsa ntchito
• Cholimba kwambiri

kuipa:

• Pang'onopang'ono kuchiza nthawi
• Kumamatira kochepa kwa magawo ena

Momwe Mungasankhire Pakati pa Acrylic ndi Silicone

Pali mitundu yambiri ya zokutira zovomerezeka pamsika, koma ziwiri zodziwika kwambiri ndi acrylic ndi silicone. Ndiye mumasankha bwanji pakati pa ziwirizi?

Nazi zina zofunika kuziganizira:

• Mtengo: Acrylic nthawi zambiri imakhala yotsika mtengo kuposa silikoni.
• Nthawi yochiza: Silicone imatha kutenga maola 24 kapena kuposerapo kuti ichire, pomwe acrylic amangotenga maola ochepa.
• Kutentha kwa ntchito: Silicone ingagwiritsidwe ntchito potentha kwambiri kusiyana ndi acrylic, kotero zingakhale bwino ngati mukugwira ntchito kumalo ozizira.
• Viscosity: Acrylic ndi yopyapyala kuposa silikoni, kotero itha kukhala yosavuta kugwiritsa ntchito.
• Kusinthasintha: Silicone imasinthasintha kwambiri kuposa acrylic, kotero ndikwabwino kugwiritsa ntchito pomwe zokutira zimafunika kusinthasintha kapena kusuntha.
• Kukana kutentha: Silicone imatha kupirira kutentha kwambiri kuposa acrylic.
• Kukana kwa Chemical: Silicone imagonjetsedwa ndi mankhwala kuposa acrylic.

Kotero, ndi iti yomwe ili yoyenera kwa inu? Zimatengera zosowa zanu zenizeni ndi kugwiritsa ntchito. Ngati mukufuna kufotokozera zambiri, funsani katswiri!

Zolingalira pakusankha Pakati pa Acrylic kapena Silicone

Posankha pakati pa zokutira za acrylic ndi silicone conformal, pali zinthu zingapo zomwe muyenera kuziganizira. Chofunikira kwambiri ndikugwiritsa ntchito komanso malo omwe wosanjikizawo adzagwiritsidwe. Zina zofunika kuziganizira ndi izi:

• Mtundu wa gawo lapansi lomwe limakutidwa
• The ankafuna zimatha ❖ kuyanika
• Mulingo wachitetezo wofunikira.
• Mtengo wa zinthu zokutira

Zovala za Acrylic conformal nthawi zambiri zimakhala zotsika mtengo kuposa zokutira za silicone ndipo zimatha kupereka chitetezo chokwanira ku chinyezi ndi fumbi. Komabe, zimakhala zolimba kuposa zokutira za silikoni ndipo sizingapereke chitetezo chokwanira m'malo ovuta kwambiri.

Zovala zokhala ndi silicone ndizokwera mtengo kuposa ma acrylics, koma zimakhala zolimba kwambiri ndipo zimatha kupereka chitetezo chabwino ku mankhwala ndi kutentha kwambiri. Zimakhalanso zosavuta kuchotsa ngati kukonzanso kapena kusinthidwa kuyenera kupangidwa ku gawo lapansi.

Zambiri za acrylic vs silicone conformal zokutira: zomwe zokutira conformal ndizoyenera kwa inu, mutha kupita ku DeepMaterial pa https://www.epoxyadhesiveglue.com/category/epoxy-conformal-coating/ chifukwa Dziwani zambiri.