Compound yog kev tiv thaiv kev ruaj ntseg ntawm cov cuab yeej los ntawm ib puag ncig kev ua phem
Compound yog kev tiv thaiv kev ruaj ntseg ntawm cov cuab yeej los ntawm ib puag ncig kev ua phem
Anonim
potting compound
potting compound

Hauv hluav taws xob engineering, peb feem ntau tuaj hla lub tswvyim ntawm "compound". Nws yog dab tsi? Lub compound yog ib qho insulating muaj pes tsawg leeg uas yog kua thaum lub sij hawm siv, thiab ces hardens, tsis muaj cov kuab tshuaj. Lub compound tsis poob nws cov khoom ntawm qhov kub ntawm -50 txog +200 degrees Celsius, tiv taus hluav taws xob, yog npaj rau impregnation, casting ntawm cov khoom, qhov chaw ntawm cov khoom siv hauv xov tooj cua, hluav taws xob engineering, tiv thaiv cov ntawv luam tawm Circuit Court boards thiab lawv cov khoom los ntawm sab nraud. cuam tshuam (mechanical, thermal, chemical, vibration), tshwj xeeb tshaj yog nyob rau hauv ib puag ncig nruj. Tom qab tag nrho, cov xwm txheej raws li qhov yuav tsum tau ua haujlwm hauv xov tooj cua-electronic thiab cov khoom siv hluav taws xob thiab cov cuab yeej siv tau nyob deb ntawm cov chaw sim. Cov no yog qhov kub thiab txias ntawm Far North, thiab high humidity ntawm huab cua sov, thiab aggressive ib puag ncig ntawm sab nrauv, thiab lwm yam. Tag nrho cov saum toj no quab yuam kev loj hlob engineers siv, nrog rau noo noo-repellent coatings, compound cov ntaub ntawv rau pouring. thiab sealing cov khoom thiab cov khoom siv rau kev tiv thaiv. Feem ntau, ob lub ntsiab lusmixes.

Los ntawm cov khoom, cov khoom sib txuas tau muab faib ua:

- impregnation;

- hluav taws xob insulating;

- filling;

- elastic;

- plasticized nrog roj hmab;

- nrog tsawg molecular hnyav plasticizer.

compound nws
compound nws

Impregnation compound yog ib qho muaj pes tsawg leeg uas yog siv los impregnate lub windings ntawm hluav taws xob motors thiab khoom siv.

Insulating, tig, muab faib ua:

- thermosetting (tsis soften tom qab kho). Cov no suav nrog epoxy, polyester thiab lwm yam resins;

- thermoplastic (mos thaum rhuab) - bitumen, waxy dielectrics, thermoplastic polymers (polystyrene, polyisobutylene).

Sealing compound yog ib qho muaj pes tsawg leeg tsim los sau cov kab noj hniav hauv cov thawv cable, nrog rau kev sib khi hauv cov tshuab hluav taws xob thiab cov khoom siv.

Hluav taws xob rwb thaiv tsev sib xyaw yog tsim los ntawm methacrylic esters, siv ob qho tib si impregnating thiab txhaws. Xws li cov tebchaw, tom qab hardening ntawm ib tug kub ntawm 70-100 degrees Celsius (nrog ib tug tshwj xeeb hardener, qhov pib no poob mus rau 20 degrees), ua thermosetting thiab yuav siv tau ntawm kub ntawm -55 mus rau +105 degrees. Lawv yog siv los impregnate ntau yam khoom rotating (coils thiab windings ntawm hluav taws xob motors, thiab lwm yam), uas muab kev tiv thaiv zoo tiv thaiv hluav taws xob tam sim no.

Filling compound raws li bitumen nyob rau hauv cov nqe lus ntawm tshav kub tsis kam (105 degrees) belongs rau chav kawm "A". Epoxy resins muaj qhov ua kom sov siab tshaj plaws.organosilicon compounds.

Elastic, roj hmab-plasticized compounds tau pom kev siv tshwj xeeb. Niaj hnub no compound rau cov ntaub ntawv yog nrov heev. Saj zawg zog silicone txhaj pwm ntawm ntau yam configurations yog tsim los ntawm nws. Cov txheej txheem kub ntawm qhov sib xyaw ua ke nce mus txog +200 ° C, nws tsis pom zoo kom sov nws siab tshaj 250 ° C, vim tias cov ntaub ntawv polymer raug puas tsuaj.

pwm compound
pwm compound

Tam sim no, ntau hom kev sib txuas tau tsim, txhua tus tau pom nws tus kheej daim ntawv thov thiab muaj cov yam ntxwv ntawm nws.

Epoxy compound tau dhau los ua neeg nyiam tshaj plaws - nws yog cov khoom siv polymer nrog qis qis, zoo heev dielectric yam ntxwv thiab siab adhesion. Nws muaj peev xwm ua hauj lwm nyob rau hauv tej yam kev mob ntawm tas li deformation. Epoxy resins tau siv dav hauv ntau hom khoom siv, kev teeb tsa, cov qauv. Cov kev sib xyaw no kuj tau sib xws nrog lwm cov oligomers, thiab lawv qhov kev kho yog nrawm los ntawm kev sib xyaw nrog lwm cov tebchaw. Qhov tsis zoo ntawm cov epoxy compound yog qhov ua haujlwm kub qis, uas ua rau nws tsis tuaj yeem siv nws hauv cov khoom siv uas ua haujlwm hnyav heev.

Summarizing, peb tuaj yeem hais tias kev siv cov khoom sib xyaw ua kom muaj kev ntseeg siab ntawm kev ua haujlwm thiab ua rau lub neej ua haujlwm ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, ua kom lawv cov sealing thiab tiv thaiv kev co, thiab pab tiv thaiv cov neeg siv khoom los ntawm hluav taws xob tam sim no.

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