Ese amazi ashobora kuvamo anyuze muri silicone?

 

Amazi y'amazi ugereranije n'umwuka w'amazi: "Amazi asohoka" abiri atandukanye

1) Amazi y'amazi asohoka

Silicone ikoreshejwe neza ikunze kuziba amazi y'amazi neza. Mu bintu byinshi bifatika binanirana, amazi yinjira bitewe na:

• Udupfundikizo tw'amasaro tudahagije cyangwa utudomo duto
• Gutegura nabi ubuso (amavuta, ivumbi, ibintu birekura)
• Ingendo zica umurongo w'ingoboka
• Udupira tw'umwuka, imyanda, cyangwa imyakura bitewe no kutagira umuti ukwiye
• Ubushobozi butari bwo bwa silicone kuri substrate (gufata neza)

Isaro ya silikoni ikomeza kandi ifatanye neza ishobora kwihanganira gushwanyagurika, imvura, ndetse no kwibira mu mazi igihe gito bitewe n'imiterere, ubunini, n'imiterere y'ingingo.

2) Ubwinshi bw'umwuka w'amazi

Nubwo silicone yaba imeze neza, elastomer nyinshi za silicone zemerera umwuka w’amazi gukwirakwira buhoro buhoro. Ibi si "gusohoka" kugaragara nk'umwobo—bimeze nk'ubushuhe bugenda bunyura mu ruhu.

Ku bijyanye no kurinda ibikoresho by'ikoranabuhanga, iryo tandukaniro ni ingenzi: PCB yawe ishobora gukomeza kubona ubushuhe mu mezi/imyaka niba silicone encapsulant ishobora kwemererwa n'umwuka, nubwo yaziba amazi y'amazi.

Impamvu Silicone ikoreshwa nk'agapfukamunwa

A agapfunyika ka silikoniNtiyatoranijwe gusa mu rwego rwo kwirinda amazi, ahubwo no mu rwego rwo kwizerwa muri rusange:

• Ubushyuhe bwa serivisi bunini:silikoni nyinshi zikora neza cyane kuva kuri-50°C kugeza +200°C, hamwe n'amanota yihariye ari hejuru.
• Koroshya no kugabanya imihangayiko:modulus nke ifasha kurinda ingingo z'umushongi n'ibice byawo mu gihe cy'ubushyuhe.
• Ubudahangarwa bw'imirasire y'izuba n'ikirere:silicone iguma neza hanze ugereranije na polimeri nyinshi z’umwimerere.
• Ubwugarizi bw'amashanyarazi:Imikorere myiza ya dielectric ishyigikira imiterere y'ibikoresho by'ikoranabuhanga bifite voltage nyinshi kandi byoroheje.

Mu yandi magambo, silicone ikunze gutuma ibintu biramba ndetse n'iyo intego nyamukuru atari "uruzitiro rutunganye rw'ubushuhe".

Ni iki kigena niba amazi anyura muri Silicone?

1) Ubwiza n'ubugari bw'umuti

Igipfundikizo gito cyoroshye ko umwuka w'amazi winjira, kandi amasaro magufi yoroshye kuyahindura. Kugira ngo habeho gufunga, ubugari buhamye ni ingenzi. Kugira ngo habeho gufunga/gufunga, kwiyongera k'ubugari bishobora kugabanya ikwirakwizwa ry'ubushuhe no kunoza uburinzi bw'imashini.

2) Gufata ku gice cy'ubutaka

Silicone ishobora gufata neza, ariko ntabwo ikora ku buryo bwikora. Ibyuma, plastiki, n'ubuso butwikiriwe bishobora gukenera:

• Guhanagura/gukuraho amavuta mu byuma bishongesha
• Gushwanyagurika (aho bikenewe)
• Primer yagenewe guhuza silicone

Mu musaruro, kunanirwa gufatisha ni yo mpamvu nyamukuru ituma habaho "gusohoka", nubwo silicone ubwayo yaba imeze neza.

3) Guhitamo ibikoresho: RTV vs. kongeramo-gukiza, byuzuye vs. bitarujujwe

Si silicone zose zikora kimwe. Uburyo bwo gukora bigira ingaruka kuri ibi bikurikira:

• Kugabanuka kw'inyuma y'uko ivuwe (kugabanuka guke bigabanya icyuho gito)
• Modulus (guhindagurika ugereranije no gukomera)
• Ubudahangarwa bw'imiti
• Igipimo cyo gukwirakwira k'ubushuhe

Zimwe muri silikoni zuzuye hamwe n’inyunganiramirire zidasanzwe zigabanya ubushobozi bwo kwinjira ugereranije na silikoni zisanzwe kandi zihumeka neza.

4) Igishushanyo mbonera n'ingendo bihuriweho

Iyo ihuriro ryagutse/rigenda rigabanuka, agapfundikizo kagomba kwakira ihinduka ritavanguye. Uburemere bwa silikoni ni inyungu ikomeye hano, ariko gusa iyo imiterere y'ingingo itanga ahantu hakwiye ho gufatanya kandi ikirinda inguni zityaye zishyiramo imbaraga nyinshi.

Ubuyobozi Bufatika: Igihe Silicone Ihagije—n'igihe Idahagije

Ubusanzwe silicone ni amahitamo meza iyo ukeneye:

• Gufunga ikirere cyo hanze (imvura, ikirundo cy'amazi)
• Ubudahangarwa bw'ihindagurika ry'ikirere/ubushyuhe
• Ubwugarizi bw'amashanyarazi bufite imitako ya mekanike

Tekereza ku zindi mbogamizi cyangwa izindi mbogamizi igihe ukeneye:

• Gukumira igihe kirekire ubushuhe bwinjira mu bikoresho by'ikoranabuhanga bigezweho
• Gufunga by'ukuri "bidafite umwuka" (silicone ntabwo ari ikintu kidafite umwuka)
• Kwinjira mu mazi buri gihe hamwe n'itandukaniro ry'umuvuduko

Muri ibi bihe, injeniyeri zikunze guhuza ingamba: silicone encapsulant yo kugabanya stress + gasket yo mu nzu + conformal coating + desiccant cyangwa vent membrane, bitewe n'ibidukikije.

Umurongo w'ingenzi

Amazi ntabwo akunze kuvabinyuzesilicone yavuwe nk'amazi—ibibazo byinshi bituruka ku gufata nabi, icyuho, cyangwa inenge. Ariko umwuka w'amazi ushobora kwinjira muri silicone, niyo mpamvu "idapfa amazi" kandi "idapfa amazi" bitaba bimwe mu kurinda ibikoresho by'ikoranabuhanga. Niba umbwiye agasanduku kawe ko gukoresha (agasanduku ko hanze, PCB potting, uburebure bwo kwinjizwa mu mazi, urugero rw'ubushyuhe), nshobora kukugira inama yo gukoresha silicone encapsulant ikwiye, ubunini bw'intego, n'ibizamini byo kwemeza (IP rating, soak test, thermal cycling) kugira ngo bihuze n'intego zawe zo kwizerwa.