Mabhodhi edunhu akadhindwa (PCBs) anoshandisa PCB conformal coating kudzivirira. Iyi yakakosha yekuvharisa inochengetedza kubva pamvura, tsvina, uye tembiricha shanduko. Iwo marudzi mashanu makuru ePCB conformal coating ndeye Acrylic, Silicone, Polyurethane, Epoxy, uye Parylene. Rudzi rumwe norumwe rune simba rarwo uye utera. Kunzwisisa misiyano iyi kunokubatsira kusarudza yakanakisa PCB conformal coating kune zvaunoda. Kana iwe uchida kuchinjika, kusimba, kana kuchengetedzwa kwemakemikari, machira aya anogona kubatsira. Kusarudza iyo chaiyo PCB conformal coating inoita kuti maPCB ako ashande nemazvo mumamiriro ezvinhu akaoma.
Zvitsva Zvitsva
Acrylic coatings zviri nyore kuisa uye kubvisa. Vanoshanda zvakanaka kugadzirisa nekukurumidza uye vanopa kuchengetedzwa kwakanaka kwemagetsi. Zvisinei, havabate makemikari akasimba zvakanaka.
Silicone coatings yakanakira kupisa kwakanyanya uye kugara uchichinjika. Izvo zvakanaka kune zvikamu zvinofamba asi zvinogona kuva mutengo uye zvakaoma kubvisa.
Polyurethane coatings inodzivirira zvakanaka pamvura nemakemikari. Dzakasimba uye dzakanakira mamiriro akaomarara asi dzinoda zvekuchenesa dzakakosha kuti dzibvise.
Epoxy coatings yakasimba kwazvo uye inodzivisa makemikari. Izvo zvakanaka kune zvakanyanyisa mamiriro asi zvinonamatira zvakasimba uye zvakaoma kushandisa nekubvisa.
Parylene coatings anoshandisa yakakosha mhute process kuvhara zvese. Izvo zvakakwana kune zvidiki zvikamu asi zvinodhura zvakanyanya uye zvine hunyengeri kubvisa.
Acrylic PCB Conformal Coating
Key Properties
Acrylic coatings yakakurumbira nokuti inodzivirira zvakanaka uye iri nyore kushandisa. Ivo vanogadzira rakajeka, rakasimba layer rinochengeta hunyoro, tsvina, uye makemikari kure nePCBs. Aya mabhanhire ane simba guru re dielectric, rinobatsira nemagetsi ekudzivirira. Ivo zvakare vanoramba UV mwenje uye hunyoro, zvichiita kuti vavimbike munzvimbo dzakasiyana.
Acrylic coatings inogona kubviswa nyore nyore nezvinonyungudutsa, zvichiita kuti kugadzirisa kuve nyore. Vanoomesa nekukurumidza, izvo zvinochengetedza nguva panguva yekugadzira. Nekudaro, ivo havarambi makemikari pamwe ne polyurethane kana epoxy coatings.
Zvakanakira uye Zvakaipa
Advantages:
Zviri nyore kushandisa uye kubvisa.
Yakachipa kupfuura mamwe marudzi ekuputira.
Simba rekudzivirira magetsi rine simba guru re dielectric.
Kuomesa nekukurumidza kunowedzera kugadzira.
payakaipira:
Husina simba pakurwisa makemikari ane simba uye zvinonyungudutsa.
Avhareji yekudzivirira kubva kune yakanyanya kana tembiricha yakaderera.
Inogona kuda mamwe ma layer kuti igare iri nani.
Miedzo inoratidza kuti tsvina senge flux yasara inogona kukuvadza acrylic coatings. Semuyenzaniso:
Miyedzo yemvura patembiricha yakakwira yakaratidza tsvina inogona kukonzera ngura uye kubuda.
Zvidzidzo zvakaratidza kuti kuchengeta maPCB akachena kwakakosha kudzivirira matambudziko ekuputira sekufamba kwemagetsi.
Zvinowanzoitwa Zvikumbiro
Acrylic coatings inoshandiswa mumaindasitiri mazhinji. Mumuchadenga, vanodzivirira maPCB kubva mukusvibiswa, shanduko yekushisa, uye kudzvanywa. Ivo vanova nechokwadi chekudzivirira kwakasimba kwemagetsi, izvo zvakakosha kune ndege senge Boeing 787 Dreamliner.
Aya machira anowanikwawo mune zvemagetsi, kwaanochengeta michina yakachengeteka kubva kune unyoro neguruva. Mutengo wavo wakaderera uye kushandiswa kuri nyore kunoita kuti ive yakakura mukugadzirwa kwehuwandu. Mumotokari, vanodzivirira magetsi kubva pakunyorova uye kuzununguka.
Acrylic coatings inoshanda zvakanaka pakudzivirira zvine mwero uye kugadzirisa nyore. Asi kune makemikari akaoma kana kupisa kwakanyanya, mamwe machira anogona kunge ari nani.
Silicone PCB Conformal Coating
Key Properties
Silicone coatings yakanakira kupisa kwakanyanya uye kuchinjika. Vanokwanisa kubata tembiricha kusvika ku400 ° F pasina kukuvara. Aya machira anotambanudza uye anokotama zviri nyore, kuti asatsemuka. Izvi zvinovaita vakakwana kuchengetedza zvikamu zvisina kusimba paPCBs.
Silicone inonamira zvakanaka kune akasiyana PCB zvinhu, ichipa kudzivirira kwakasimba. Asi havarambi makemikari semafuta kana zvinonyungudutsa zvakanyanya. Mishumo inoratidza kuti vanopona nekuvhunduka kwekupisa uye kutenderera. Semuyenzaniso:
Coating Type | Heat Shock Test Results | Heat Cycle Test Results | Stretchability | Stress Near Edges |
|---|---|---|---|---|
Coating A | Hapana kutsemuka mushure me517 kupisa kunotyisa | Mitswe mushure me350 kutenderera | Inotambanudza nyore | Kushungurudzika kwakanyanya pedyo nemicheto |
Coating B | Akapfuura 3 kutenderera kwe517 zvinotyisa | Hapana mitswe mushure me517 kutenderera | Inotambanudza zvirinani pane PCB | Hapana matambudziko ekudzvinyirira pamucheto |
Zvakanakira uye Zvakaipa
Silicone coatings ine zvakawanda zvinobatsira:
Bata tembiricha yakanyanya, yakanakira nzvimbo dzinopisa.
Inochinjika, yakanaka pakuzunungusa kana kuzunguza zvikamu.
Namatira zvakanaka kune PCB nzvimbo yekudzivirira kusingaperi.
Asi ivo zvakare vane zvimwe zvakaderera:
Usaramba mafuta kana zvinonyungudutsa zvakanaka.
Zvakaoma kubvisa, zvinoda makemikari anokosha.
Mutengo unodarika mamwe machira.
Aya machira anoshanda zvakanaka mumaindasitiri ane kupisa uye kufamba. Asi mutengo wavo wepamusoro uye kuomerwa kwekubvisa kunogona kusaenderana nebhajeti rese.
Zvinowanzoitwa Zvikumbiro
Silicone coatings inoshandiswa mumotokari uye ndege. Motokari dzemagetsi uye masisitimu ekuchengetedza anoenderana navo pakuchengetedza dunhu. Vanobata kupisa uye kudengenyeka, zvichiita kuti zvive zvakakosha.
Mumagetsi, silicone coatings iri kuve yakakurumbira. Midziyo inoda zvirinani kutonga kwekupisa uye yakakwirira tembiricha miganhu. New UV-kurapa uye nano-yekuputira nzira dzinovandudza mashandiro avo. Machira anotambanudzwa akakoshawo kune azvino PCB magadzirirwo.
Kana iwe uchida coating yemamiriro akaomarara, silicone isarudzo yakanaka. Asi funga nezve mutengo uye matambudziko ekubvisa usati wasarudza.
Polyurethane PCB Conformal Coating
Key Properties
Polyurethane coatings yakanaka pakuvharira mvura, makemikari, uye mavanga. Izvi zvinovaita vakakwana kuchengetedza maPCB munzvimbo dzakaoma. Vanogadzira nhovo yakasimba inochengetedza tsvina, kuchinja kwekushisa, uye zvinhu zvinokuvadza kure nemagetsi.
Aya machira anonamira zvakanaka kune akawanda maficha, achipa kuchengetedzwa kwenguva refu. Sezvo maPCB anowedzera kudiki uye akaomarara, kushandisa machira akavimbika senge polyurethane kunowedzera kukosha. Vanowedzera tambo yakaoma iyo inobatsira PCBs kugara yakasimba uye kushanda zvakanaka, kunyange mumamiriro ezvinhu akaoma.
Zvakanakira uye Zvakaipa
Advantages:
Yakanakisa pakuchengeta kunze kwemvura nemakemikari.
Zvakanyanya kuomarara kurwisa zvikweshwa uye kupfeka.
Inonamira zvakasimba kune zvakasiyana zvinhu.
Inodzivirira kubva kumarara, kubatsira PCBs kugara kwenguva refu.
payakaipira:
Zvakaoma kubvisa; inoda mishonga yakakosha.
Zvinotora nguva yakawanda kunyorera kupfuura mamwe machira.
Inodhura kupfuura acrylic coatings.
Imwe ongororo yakaratidza kuti zvakakosha sei kuvhara mvura uye kunamatira zvakanaka kudzivirira ngura. Yakawana ma polyurethane coatings anoshanda zvakanaka mumamiriro ehunyoro, achiita kuti abatsire mafekitori. Asi tsvina yakasara inogona kuderedza kuvhara, saka kuchenesa maPCB kutanga kwakakosha zvikuru.
Zvinowanzoitwa Zvikumbiro
Polyurethane coatings inoshandiswa uko maPCB anotarisana nematambudziko akaomarara. Mumotokari, zvinodzivirira pamvura, makemikari, uye kuzununguka. Izvi zvinochengeta masisitimu akaita sezvinodzora injini uye maficha ekuchengetedza achishanda nemazvo.
Mumafekitari, machira aya anodzivirira maPCB mumashini akafumurwa kumakemikari uye shanduko yekupisa. Vanoshandawo zvakanaka mumagetsi emugungwa, vachichengetedza kukuvara kwemvura yemunyu.
Mamwe maindasitiri ave kushandisa polyurethane coatings kuchengetedza zvemagetsi zvirinani. Kusarudza iyi coating kunobatsira maPCB ako kuti arambe akasimba uye akavimbika, kunyangwe mumamiriro akanyanya.
Epoxy PCB Conformal Coating
Key Properties
Epoxy coatings yakasimba kwazvo uye inodzivirira maPCB zvakanaka. Vanogadzira tambo yakaoma inonamatira zvakasimba kumasekete. Ichi chisungo chakasimba chinomira kusvuura kana kutsemuka, kunyangwe pasi pekumanikidzwa. Epoxy zvakare inopikisa makemikari senge acids, mabhesi, uye zvinonyungudutsa.
Aya machira anoshanda zvakanyanya munzvimbo dzakaoma. Vanovhara mvura uye vanochengetedza magetsi kubva kune unyoro. Dzinoramba dzakatsiga mukupisa nekutonhora. Semuenzaniso, yakakosha epoxy inogona kurarama maawa zviuru zvishanu mumhepo ine munyu, ichiita kuti ive yakakwana kune drones uye kumwe kushandiswa kwakaoma.
mamiriro | Details |
|---|---|
Munyu Fog Kudzivirirwa | Inobata maawa e5,000 emhepo ine munyu, yakanakira drones. |
Chemical Nemishonga | Inovhara maasidhi, mabhesi, uye zvinonyungudutsa, zvakanakira nharaunda dzakaoma. |
Mvura Inodzivirira | Inomisa mvura kubva pakukuvadza zvikamu zvemagetsi. |
Heat Kugadzikana | Inoshanda zvakanaka mumamiriro ekupisa zvakanyanya kana kutonhora. |
Simba Pakudzivisa Kushushikana | Inoramba yakasimba pasi pekuzununguswa uye kumanikidzwa. |
Zvakanakira uye Zvakaipa
Epoxy coatings ine zvakawanda zvinobatsira:
Namira zvakasimba kumasekete kuitira kudzivirira kwenguva refu.
Ramba makemikari kuchengetedza zvikamu zvakachengeteka.
Ramba wakasimba pasi pekuzunungusa nekumanikidzwa.
Vhara mvura kudzivirira kukanganisa.
Asi ivo zvakare vane zvimwe zvakaderera:
Zvakaoma kubvisa; inoda mishonga yakakosha.
Yakakora, saka kuashandisa kunotora nguva.
Zvishoma kushanduka kupfuura silicone, iyo inogona kukonzera kuputika muzvikamu zvinofamba.
Vagadziri veSatellite vanoshandisa epoxy nekuti haiburitse magasi muchadenga. Nemasetellite akawanda ari kutangwa gore rega rega, epoxy coatings iri kudiwa zvakanyanya.
Zvinowanzoitwa Zvikumbiro
Mapurasitiki epoxy anoshandiswa mumaindasitiri akawanda. Muchadenga, anodzivirira maPCB esatellite kubva mumhepo inoputika uye ine munyu. Zvishandiso zvekurapa zvinoashandisa kudzivirira guruva nehunyoro.
Mafekitori anoshandisa epoxy panguva yekugadzirwa kwePCB kuti magetsi agare kwenguva refu. Aya mabhanhire anogona kugadzirirwa kupisa, magetsi, kana simba rinodiwa. Mungave mumotokari, muchina, kana midziyo, epoxy coatings inochengeta zvemagetsi zvakachengeteka uye kushanda zvakanaka.
Parylene PCB Conformal Coating
Key Properties
Parylene coatings yakakosha nekuda kwehupfu hwadzo. Iyi nzira inoumba mutete, kunyange layer pasina maburi. Inovhara chikamu chose chePCB zvakakwana. Aya mabhanhire akanaka pakuvhara hunyoro, makemikari, uye magasi anokuvadza. Vanobatawo kupisa zvakanaka uye vane simba rekudzivirira magetsi.
Heino kutarisa kwakapfava pazvinhu zvavo:
pfuma | ukoshi | ASTM nzira |
|---|---|---|
Kuwandisa (g / cm³) | 1.289 | D1505 |
Dielectric Simba (Volts/mil) | 5,600 volts | D149 |
Dielectric Constant (60 Hz) | 3.15 | D150 |
Chinhu chinoparadza (60 Hz) | 0.020 | D150 |
Tensile Simba (MPa) | 70 | D882 |
Elongation to Break (%) | 200 | D882 |
Kunyorera Point (° C) | 290 | N / A |
Aya maficha anoita kuti Parylene coatings akwane kumabasa anoda kuchengetedzwa kwakasimba uye kunogara.
Zvakanakira uye Zvakaipa
Advantages:
Inovhara unyoro uye zvinonyungudutsa zvakanaka.
Simba rekudzivirira magetsi uye kupisa kupisa.
Hapana maburi, saka inodzivirira zvachose.
Yakachengeteka kune zvishandiso zvekurapa uye zvishandiso.
payakaipira:
Inoda midziyo yakakosha yekushandisa.
Zvakaoma kubvisa, kugadzirisa kugadzirisa.
Inodhura kupfuura mamwe machira.
Parylene iri nani pane mamwe machira ekutetepa, kunyange kudzivirira. Asi mutengo wayo wakakwira uye kubviswa kwakaoma kunogona kusaenderana nezvinodiwa zvese.
Zvinowanzoitwa Zvikumbiro
Parylene coatings inoshandiswa mumaindasitiri anoda kuchengetedzwa kwakasimba. Muchadenga, vanochengeta maPCB akachengeteka muhurongwa hwendege nemaredhiyo. Vanodzivisawo mvura yemunyu, zvichiita kuti ive huru kune zvikepe uye drones.
Mumushonga, Parylene yakachengeteka kune pacemaker uye maturusi ekuvhiya. Inovhara zvidimbu zvidiki zvakanaka, zvichiita kuti matunhu nemajoini ave nesimba.
Mamwe makambani iye zvino anoda machira emhando yepamusoro ezvigadzirwa zvekurapa uye zvehunyanzvi. Parylene yakasarudzika maficha anoita kuti ive sarudzo yepamusoro kune yakaoma uye inogara kwenguva refu kushandiswa.
Mhando imwe neimwe yekuputira ine simba rayo rinokosha. Acrylic iri nyore kushandisa uye kugadzirisa. Silicone inobata kupisa uye inokotama pasina kuputsa. Polyurethane inovhara mvura uye inopesana nemakemikari zvakanaka. Epoxy yakanyanya kuomarara kune dzakaomarara nharaunda. Parylene inopa nhete, nyangwe zvidimbu zvezvikamu zvakatetepa.
Funga nezvezvakatipoteredza paunenge uchitora jasi. Unyoro, kupisa, uye chiedza chezuva zvinhu. Silicone uye epoxy zvakanakira mamiriro akaoma. Acrylic inoshanda nemazvo kumapurojekiti akachipa. Vagadziri vanoedza mabhanhire kuti vaenderane navo nezvikamu. Kutora coating chaiyo kunoita kuti maPCB arambe achishanda zvakanaka kwenguva yakareba.
FAQ
Ko PCB conformal coatings inoitei?
PCB conformal coatings inochengetedza mapuranga edunhu akachengeteka. Vanovhara hunyoro, guruva, makemikari, uye kuchinja kwekupisa. Izvi zvinobatsira zvemagetsi kugara kwenguva refu uye kushanda zvakanaka munzvimbo dzakaoma.
Ndingatora sei yakanakisa coating yePCB yangu?
Funga nezvekuti PCB yako ichashandiswa kupi. Silicone yakanaka pakupisa. Polyurethane uye epoxy inopikisa makemikari. Acrylic iri nyore kushandisa, uye Parylene inoshanda kune zvidiki, zvitete zvikamu.
Ko conformal coatings inogona kubviswa mushure mekuiswa?
Hongu, asi zvimwe zvakaoma kubvisa. Acrylic inobuda nyore nezvinonyungudutsa. Silicone, epoxy, uye Parylene inoda maturusi akakosha kana makemikari kuti abvise.
Conformal coatings inokodzera here kumidziyo yekurapa?
Ehe, akawanda machira seParylene akachengeteka kune zvekurapa maturusi. Ivo vanochengetedza zvemagetsi mune pacemaker, maturusi ekuvhiya, uye zvimwe zvigadzirwa zvehutano.
Ko conformal coatings inoshandura mashandiro anoita maPCB?
Mapendi eConformal anoita kuti maPCB ashande zviri nani . Anomisa mapfupi, ngura, uye kukuvara kunobva munharaunda. Anovandudzawo insulation, achibatsira macircuit kufamba zvakanaka uye zvakavimbika.
