Arụmọrụ na njirimara nke ihe nkiri OSP n’ime usoro enweghị ndu nke PCB Mpempe akwụkwọ

A na-ewere OSP (Organic Solderable Protective Film) dị ka usoro ọgwụgwọ kachasị mma n’elu n’ihi na ọ dị mma nke ukwuu, usoro dị mfe na ọnụ ala.

N’akwụkwọ a, a na-eji thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS), thermogravimetric analysis (TGA) na photoelectron spectroscopy (XPS) iji nyochaa njirimara nguzogide okpomọkụ nke ọgbọ ọhụrụ nke ihe nkiri OSP na-eguzogide okpomọkụ. Gas chromatography na-anwale obere ihe ndị na-ahụ maka ihe ndị dị ndụ na ihe nkiri OSP na-eguzogide okpomọkụ (HTOSP) nke na-emetụta ike. N’otu oge ahụ, ọ na-egosi na alkylbenzimidazole-HT na nnukwu okpomọkụ na-eguzogide ihe nkiri OSP nwere obere mgbanwe. Ihe omuma TGA na-egosi na ihe nkiri HTOSP nwere okpomọkụ nbibi dị elu karịa ihe nkiri OSP ụlọ ọrụ dị ugbu a. Ihe omuma XPS na-egosi na mgbe ntughari 5 na-enweghị ndu nke OSP dị elu, ọdịnaya oxygen mụbara naanị ihe dịka 1%. Ọganihu ndị a dị n’elu na-emetụta ihe ndị chọrọ nke ụlọ ọrụ mmepụta ihe na-enweghị ihe solderability.

Ejirila ihe nkiri OSP na bọọdụ sekit ruo ọtụtụ afọ. Ọ bụ ihe nkiri polymer organometallic nke e guzobere site na mmeghachi omume nke ogige azole na ihe ndị na-agbanwe agbanwe, dị ka ọla kọpa na zinc. Ọtụtụ ọmụmụ [1,2,3] ekpughere usoro mgbochi corrosion nke ogige azole na mbara igwe. GPBrown [3] mebere nke ọma benzimidazole, ọla kọpa (II), zinc (II) na ihe ndị ọzọ metal mgbanwe nke organometallic polymers, ma kọwapụta ọmarịcha okpomoku dị elu nke poly(benzimidazole-zinc) site na njirimara TGA. GPBrown’s TGA data na-egosi na nbibi okpomọkụ nke poly(benzimidazole-zinc) dị elu dị ka 400 Celsius C na ikuku na 500 Celsius C na nitrogen ikuku, mgbe mmebi okpomọkụ nke poly(benzimidazole-ọla kọpa) bụ naanị 250 ° C. . Ihe nkiri HTOSP ọhụrụ emepụtara n’oge na-adịbeghị anya dabere na kemịkalụ kemịkalụ nke poly (benzimidazole-zinc), nke nwere nguzogide okpomọkụ kacha mma.

Ihe nkiri OSP bụ nke polymers organometallic na obere ụmụ irighiri ihe ndị a na-etinye n’oge usoro ntinye, dị ka acid fatty na ogige azole. Ndị polymer Organometallic na-enye nguzogide corrosion dị mkpa, nchikota elu ọla kọpa, na ike elu nke OSP. Okpomọkụ na-emebi emebi nke polymer organometallic ga-adị elu karịa ebe mgbaze nke onye na-ere ihe na-enweghị isi iji gbochie usoro na-enweghị isi. Ma ọ bụghị ya, ihe nkiri OSP ga-eweda mgbe emechara ya site na usoro enweghị ndu. Ọnọdụ nbibi nke ihe nkiri OSP na-adabere n’ụzọ dị ukwuu na nguzogide okpomọkụ nke polymer organometallic. Ihe ọzọ dị mkpa na-emetụta nguzogide oxidation nke ọla kọpa bụ mgbanwe nke ogige azole, dị ka benzimidazole na phenylimidazole. Obere ụmụ irighiri ihe nkiri OSP ga-apụ apụ n’oge usoro ntughari na-enweghị ndu, nke ga-emetụta nguzogide oxidation nke ọla kọpa. Gas chromatography-mass spectrometry (GC-MS), thermogravimetric analysis (TGA) na photoelectron spectroscopy (XPS) nwere ike iji jiri nkà mmụta sayensị kọwaa nguzogide okpomọkụ nke OSP.

1. Gas chromatography-mass spectrometry analysis

A na-ekpuchi efere ọla kọpa ndị a nwalere na: a) ihe nkiri HTOSP ọhụrụ; b) ihe nkiri OSP ọkọlọtọ ụlọ ọrụ; na c) ihe nkiri OSP mmepụta ihe ọzọ. Kpochapụ ihe dịka 0.74-0.79 mg nke ihe nkiri OSP site na efere ọla kọpa. Efere ọla kọpa ndị a kpuchiri ekpuchi na ihe nlele ndị a kpụrụ akpụ ahụ enwetabeghị ọgwụgwọ ọ bụla. Nnwale a na-eji ngwa H/P6890GC/MS, ma na-eji sirinji na-enweghị sirinji. sirinji na-enweghị sirinji nwere ike mebie ihe nlele siri ike n’ime ụlọ nlele. sirinji na-enweghị sirinji nwere ike ịnyefe ihe nlele n’ime obere tube iko na ntinye nke chromatograph gas. Igwe na-ebu gas nwere ike na-ebute ogige organic na-agbanwe agbanwe na kọlụm chromatograph gas maka nchịkọta na nkewa. Debe ihe nlele ahụ n’akụkụ elu nke kọlụm ka e wee nwee ike ịmegharị ọkụ ọkụ ọkụ ugboro ugboro. Mgbe emechara ihe nlele zuru oke, chromatography gas malitere ịrụ ọrụ. Na nnwale a, ejiri RestekRT-1 (0.25mmid × 30m, ọkpụrụkpụ ihe nkiri nke 1.0μm) kọlụm chromatography gas. Usoro ịrị elu okpomọkụ nke kọlụm chromatography gas: Mgbe ikpo ọkụ na 35 ° C maka nkeji 2, okpomọkụ na-amalite ịrị elu ruo 325 ° C, na ọkụ ọkụ bụ 15 ° C / min. Ọnọdụ desorption thermal bụ: mgbe kpochara na 250 Celsius maka nkeji 2. A na-achọpụta oke uka/ụgwọ nke ogige organic na-adịghị agbanwe agbanwe site na uka spectrometry na nso 10-700daltons. A na-edekọkwa oge njide nke obere mkpụrụ ndụ organic niile.

2. Thermogravimetric analysis (TGA)

N’otu aka ahụ, a na-ekpuchi ihe nkiri HTOSP ọhụrụ, ihe nkiri OSP ọkọlọtọ ụlọ ọrụ, na ihe nkiri OSP ọzọ nke mmepụta ihe na ihe nlele. Ihe dị ka 17.0 mg nke ihe nkiri OSP ka a kpochapụrụ na efere ọla kọpa dị ka ihe nlele ihe. Tupu ule TGA, ọnweghị ihe nlele ma ọ bụ ihe nkiri a nwere ike nweta ọgwụgwọ ọ bụla na-enweghị ndu. Jiri TA Instruments ‘2950TA mee ule TGA n’okpuru nchebe nitrogen. A na-edobe okpomọkụ na-arụ ọrụ na ụlọ okpomọkụ maka nkeji 15, wee mụbaa ruo 700 ° C na ọnụego 10 ° C / min.

3. Photoelectron spectroscopy (XPS)

Photoelectron Spectroscopy (XPS), makwaara dị ka Chemical Analysis Electron Spectroscopy (ESCA), bụ usoro nyocha elu kemịkal. XPS nwere ike tụọ ihe mejupụtara kemịkalụ 10nm nke elu mkpuchi. Yiri ihe nkiri HTOSP na ọkọlọtọ OSP ụlọ ọrụ n’elu efere ọla kọpa, wee gafere ntugharị 5 na-enweghị ndu. Ejiri XPS nyochaa ihe nkiri HTOSP tupu na mgbe ọgwụgwọ nlọghachi. Ihe nkiri OSP ọkọlọtọ ụlọ ọrụ ka XPS tụlekwara ntugharị n’efu 5. Ngwa eji eme ihe bụ VGESCALABMarkII.

4. Site oghere solderability ule

Iji bọọdụ ule solderability (STVs) maka nnwale solderability site na oghere. E nwere ngụkọta nke 10 solderability test osisi STV arrays (nke ọ bụla n’usoro nwere 4 STVs) ntekwasa na a film ọkpụrụkpụ nke banyere 0.35μm, nke 5 STV arrays na-ntekwasa na HTOSP ihe nkiri, na ndị ọzọ 5 STV arrays na-ntekwasa na ụlọ ọrụ ọkọlọtọ ọkọlọtọ. Ihe nkiri OSP. Mgbe ahụ, STV ndị ahụ kpuchiri ekpuchi na-enweta usoro ọgwụgwọ dị elu na-ekpo ọkụ na-enweghị ndu n’ime oven mado reflow. Ọnọdụ ule ọ bụla gụnyere 0, 1, 3, 5 ma ọ bụ 7 nkwụghachi n’usoro. Enwere STV 4 maka ụdị ihe nkiri ọ bụla maka ọnọdụ nnwale ọ bụla. Mgbe usoro nrụgharị ahụ gasịrị, a na-ahazi STV niile maka oke okpomọkụ yana ịgbanye ebili mmiri na-enweghị ndu. Site-oghere solderability nwere ike kpebisie ike site na-enyocha onye ọ bụla STV na ịgbakọ ọnụ ọgụgụ nke ziri ezi jupụtara site-oghere. Ụkpụrụ nnabata maka site na oghere bụ na a ga-ejupụta ihe na-ere ahịa jupụtara n’elu nke a na-etinye site na oghere ma ọ bụ n’elu ọnụ nke site na oghere.