Inqubo yokukhiqiza yekhwalithi ephezulu ye-epoxy glass fiber board

A. Ukulungiswa kwendawo kanye nokwelashwa kwe imikhiqizo ye-laminate ye-epoxy glass cloth

1. Ngemuva kokuthi indawo yethusi yenziwe iphethini futhi igxilwe ukwenza isifunda, zama ukunciphisa ukwelashwa nokuxhumana endaweni ye-PTFE. Umsebenzisi kufanele agqoke amagilavu ​​ahlanzekile futhi abeke ifilimu ye-interlayer ebhodini ngalinye ukuze adlulele enqubweni elandelayo.

2. Indawo eqoshiwe ye-PTFE inobunzima obanele bokubopha. Lapho amashidi aqoshiwe noma ama-laminate angamboziwe azohlanganiswa, kunconywa ukuphatha indawo ye-PTFE ukuze unikeze okunamathiselwe okwanele. Izingxenye zamakhemikhali ezisetshenziselwa inqubo yokulungiselela i-pth nazo zingasetshenziselwa ukwelashwa kwendawo. Ncoma ukucwiliswa kwe-plasma noma ama-reagents amakhemikhali aqukethe i-sodium, njenge-FluroEtch®byActon, i-TetraEtch®byGore, ne-Bond-Prep®byAPC. Ubuchwepheshe obukhethekile bokucubungula buhlinzekwa umphakeli.

3. Ukwelashwa kwendawo yethusi kufanele kuqinisekise amandla okubopha angcono kakhulu. Ukwelashwa kwesekethe ye-copper monoxide ye-brown kuzoqinisa ukuma okungaphezulu ukuze kube lula ukuhlangana kwamakhemikhali nge-TacBond enamathelayo. Inqubo yokuqala idinga umhlanzi ukuze asuse izinsalela namafutha okwelapha. Okulandelayo, ukucutshungulwa kwethusi okuhle kwenziwa ukuze kwakheke indawo engaphezulu emagebhugebhu. Amakristalu enaliti ensundu aqinisa ungqimba olubophayo ngesikhathi senqubo yokucwasa. Njenganoma iyiphi inqubo yamakhemikhali, ukuhlanza okwanele ngemva kwesinyathelo ngasinye senqubo kuyadingeka. Izinsalela zikasawoti zizovimbela ukunamathela. Ukuguquguquka kokugcina kufanele kuqashelwe futhi inani le-pH kufanele ligcinwe lingaphansi kuka-8.5. Isendlalelo esomile ngongqimba futhi uqinisekise ukuthi indawo engaphezulu ayingcoliswanga ngamafutha ezandleni.

B. Imbondela kanye ne-lamination

Izinga lokushisa elinconywayo lokubopha (ukucindezela noma ukucindezela): 425°F (220°C)

Ukubhaka ama-plies ku-1.250oF (100°C) ukuze kuqedwe umswakama. Izendlalelo zigcinwa endaweni elawulwa ngokuqinile futhi zisetshenziswe phakathi namahora angu-24.

2. Inkambu yokucindezela kufanele isetshenziswe phakathi kwebhodi lamathuluzi kanye nebhodi lokuqala le-electrolytic ukuze ukucindezela ebhodini lokulawula kungasakazwa ngokulinganayo. Izindawo zamandla kagesi aphezulu ezikhona ebhodini nasebhodini lesekethe ezizogcwaliswa zizomuncwa insimu. Inkambu ingaphinda ihlanganise izinga lokushisa ukusuka ngaphandle kuya enkabeni. Ngakho, ubukhulu phakathi kwebhodi lokulawula kanye nebhodi lokulawula buhlangene.

3. Ibhodi kufanele libe nongqimba oluncane lwe-TACBOND olunikezwa umphakeli. Qaphela ukuvimbela ukungcola lapho usika izingqimba ezincane kanye nokupakisha. Ngokusho komklamo wesifunda kanye nezidingo zokugcwalisa, izingqimba ezinamathelayo ezi-1 kuye kwezingu-3 ziyadingeka. Indawo ezogcwaliswa kanye nezidingo ze-dielectric zisetshenziselwa ukubala izidingo zeshidi elingu-0.0015″ (38 micron). Kunconywa ukusebenzisa insimbi ehlanzekile noma amapuleti esibuko se-aluminium phakathi kwama-laminates.

4. Ukusiza e-lamination, ukwelashwa kwe-vacuum kwenziwa imizuzu engu-20 ngaphambi kokushisa. I-vacuum igcinwa kuwo wonke umjikelezo. Ukukhipha umoya kuzosiza ukuqinisekisa ukuthi isifunda sihlanganisiwe.

5. Beka i-thermocouple endaweni ezungezile yepuleti elimaphakathi ukuze unqume ukugadwa kwezinga lokushisa nomjikelezo ofanele.

6. Ipuleti ingalayishwa emakhazeni noma e-preheated press platen ukuze iqale. Uma inkambu yokucindezela ingasetshenziselwa isinxephezelo, ukuphakama kokushisa nokujikeleza kuzohluka. Ukufakwa kokushisa kwephakheji akubalulekile, kodwa kufanele kulawulwe ngangokunokwenzeka ukuze kuncishiswe igebe phakathi kwezindawo zangaphandle nezimaphakathi. Ngokuvamile, izinga lokushisa liphakathi kuka-12-20oF/min (6-9°C/min) kuya ku-425oF (220°C).

7. Uma usulayishiwe emshinini wokunyathelisa, ingcindezi ingasetshenziswa ngokushesha. Ukucindezela kuzophinde kuhluke ngobukhulu bephaneli yokulawula. Kufanele ilawulwe ngaphakathi kwebanga lika-100-200psi (7-14bar).

8. Gcina izinga lokushisa lokucindezela elishisayo liku-425oF (230°C) okungenani imizuzu eyi-15. Izinga lokushisa akumele lidlule ku-450oF (235°C).

9. Ngesikhathi senqubo yokugcoba, nciphisa isikhathi sokungabi naso isimo sokucindezela (njengesikhathi sokudlulisa umshini oshisayo uye kumshini obandayo). Gcina isimo sokucindezela kuze kube yilapho ingcindezi ingaphansi kuka-200oF (100°C).