Ukuxhatshazwa kokulandelela i-laminate ye-copper clad ngokuqhelekileyo ibonakaliswe ngesalathisi sokuthelekisa (CTI).Phakathi kweempawu ezininzi ze-laminates ze-copper clad (i-copper clad laminates ngokufutshane), ukuchasana kokulandelela, njengesalathiso esibalulekileyo sokhuseleko kunye nokuthembeka, kuye kwanda ukuxabiswa. PCB ibhodi yesekethe abayili kunye nabavelisi bebhodi yesekethe.

Ixabiso le-CTI livavanywa ngokuhambelana ne-IEC-112 indlela esemgangathweni "Indlela yoVavanyo yokuTyaniswa kokulandelela i-Index ye-Substrates, iibhodi eziprintiweyo kunye nee-Printed Board Assemblies", oku kuthetha ukuba ubuso be-substrate bunokumelana namaconsi angama-50 e-0.1% ye-ammonium chloride. Ixabiso eliphezulu lamandla ombane (V) apho isisombululo esinamanzi singenzi mkhondo wokuvuza kombane.Ngokwenqanaba le-CTI lezinto zokugquma, i-UL ne-IEC zohlula-hlulwe ngokwamabanga ama-6 namabakala ama-4 ngokulandelelanayo.

Jonga kwiTheyibhile 1. I-CTI≥600 lelona bakala liphezulu.I-Copper clad laminates kunye nexabiso eliphantsi le-CTI lixhomekeke ekulandeleni ukuvuza xa isetyenziswe ixesha elide kwiindawo ezinzima ezifana noxinzelelo oluphezulu, ubushushu obuphezulu, ukufuma kunye nokungcola.

Ngokubanzi, i-CTI ye-laminates ye-copper esekelwe ephepheni eqhelekileyo (i-XPC, i-FR-1, njl. njl.) yi-≤150, kunye ne-CTI ye-laminates ye-copper ehlanganisiweyo eqhelekileyo (CEM-1, CEM-3) kunye nefayibha yeglasi eqhelekileyo. I-laminates ye-cloth-based copper clad (FR-4) Isuka kwi-175 ukuya kwi-225, engenako ukuhlangabezana neemfuno eziphezulu zokhuseleko lweemveliso zombane kunye nombane.

Kumgangatho we-IEC-950, ubudlelwane phakathi kwe-CTI ye-laminate yobhedu kunye nombane osebenzayo we ibhodi yesekethe eprintiweyo kunye nesithuba esisezantsi socingo (Ubuncinane boMgama wokuCreepage) nalo liyabalulwa.I-CTI ephezulu ye-copper clad laminate ayifanelekanga kuphela ukungcoliseka okuphezulu, ikwafaneleka kakhulu ukuveliswa kweebhodi zesekethe eziprintiweyo eziphezulu kwizicelo zombane ophezulu.Xa kuthelekiswa neelaminates zobhedu eziqhelekileyo ezinokumelana nokuvuza okuphezulu, isithuba somgca weebhodi zesekethe eziprintiweyo ezenziwe kunye neyokuqala zinokuvunyelwa ukuba zibe zincinci.

Ukulandelela: Inkqubo yokwenza ngokuthe ngcembe indlela yokuqhuba phezu kwendawo yezinto ezikhuselayo eziqinileyo phantsi kwesenzo esidibeneyo sentsimi yombane kunye ne-electrolyte.

I-Comparative Tracking Index (CTI): Elona xabiso lamandla ombane liphezulu apho umphezulu wezinto eziphathekayo unokumelana namathontsi angama-50 e-electrolyte (0.1% i-ammonium chloride aqueous solution) ngaphandle kokwenza umkhondo wokuvuza, kwi-V.

Isalathiso sokuKhangela ngobungqina (PTI): Ixabiso lamandla ombane omileyo apho umphezulu wesixhobo unokumelana namathontsi angama-50 e-electrolyte ngaphandle kokwenza umkhondo wokuvuza, ochazwe kwi-V.

I-CTI yokuthelekisa uvavanyo lwe-laminate yobhedu

Ukwandisa i-CTI ye-sheet material ngokuyinhloko iqala nge-resin, kwaye inciphisa i-genes ekulula ukuba i-carbonize kwaye ilula ukuchithwa kwe-thermally kwi-resin ye-molecular structure.