發(fā)布時間：2018-01-05 07:11

  本文關(guān)鍵詞：有機基板表面覆膜接枝技術(shù)研究　出處：《電子科技大學》2016年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 有機基板 金屬化 預處理 接枝改性

【摘要】：有機聚合物材料表面金屬化后擁有導電、導熱、易成型等優(yōu)異性能,被廣泛應用于生產(chǎn)與生活的各個方面。然而有機聚合物材料與其表面金屬覆蓋層之間的鍵合力較弱,研究有機聚合物材料表面金屬化的前處理技術(shù)和金屬化工藝就成為獲得性能優(yōu)良的表面金屬層的關(guān)鍵。本論文以柔性聚酰亞胺(PI)薄膜及剛性聚苯醚(PPE)板材作為基板,圍繞以上兩種有機基板表面改性及表面金屬化開展基礎研究工作。論文主要研究內(nèi)容如下:采用A堿溶液對PI薄膜進行表面預處理,研究預處理對PI薄膜表面粗糙度、浸潤性以及官能團的影響。結(jié)果表明,經(jīng)預處理后PI薄膜表面粗糙度增加,酰亞胺環(huán)結(jié)構(gòu)因水解反應而打開,薄膜表面極性基團增加,浸潤性提升。選取硫代硫酸鈉、硫氰化鉀以及硫脲為接枝單體對PI薄膜表面接枝改性,紅外光譜分析表明三種接枝單體均能與PI薄膜形成化學鍵合,實現(xiàn)對PI薄膜的接枝改性。以硫代硫酸鈉作為接枝單體,研究接枝率隨單體濃度、接枝時間以及接枝溫度的變化規(guī)律,獲得優(yōu)化的單體濃度為5 g/L,接枝時間為12 min,接枝溫度為60℃。采用M氧化劑溶液對PPE板進行表面預處理,PPE板經(jīng)預處理后,主鏈苯環(huán)上的甲基被氧化為羧基,表面極性基團增加,浸潤性明顯提升。采用氨丙基三乙氧基硅烷及巰丙基三乙氧基硅烷混合硅烷偶聯(lián)劑對PPE板進行接枝改性,發(fā)現(xiàn)改性后基板S-H的伸縮振動峰、N-H的伸縮振動峰以及Si-O-H的伸縮振動峰強度均有所增強,偶聯(lián)劑與PPE板形成化學鍵合。研究了固化時間及固化溫度對接枝率的影響,發(fā)現(xiàn)適宜的固化時間為15 min,固化溫度為50℃。通過化學鍍法實現(xiàn)PI薄膜及PPE板的表面金屬化。采用SEM、EDS及XRD對表面金屬層的形貌、成分以及結(jié)構(gòu)進行分析,結(jié)果表明所制備金屬層均勻致密,可實現(xiàn)完整覆蓋,不含雜質(zhì)且結(jié)晶性好;對金屬層的導電性、熱穩(wěn)定性以及金屬層與基板間的結(jié)合性能進行研究,結(jié)果表明所制備金屬層具有優(yōu)良的導電性及熱穩(wěn)定性;結(jié)合力測試表明,金屬層與PI薄膜間剝離強度達到6.0 N/cm,金屬層與PPE板間結(jié)合力可達5B級標準。
[Abstract]:After metallization, organic polymer materials have excellent properties such as conducting, heat conduction, easy forming and so on. It is widely used in all aspects of production and life. However, the bonding force between organic polymer materials and metal coatings on their surfaces is weak. The study of metallization technology and metallization technology on the surface of organic polymer materials has become the key to obtain the surface metal layer with good performance. In this paper, flexible polyimide (Pi) thin films and rigid polyphenylene ether (PPE) films were used. PPEs are used as substrates. The basic research work is carried out around the above two kinds of organic substrate surface modification and surface metallization. The main contents of this thesis are as follows: the surface pretreatment of Pi thin films with A alkali solution is carried out. The effects of pretreatment on the surface roughness, wettability and functional groups of Pi thin films were studied. The results showed that the surface roughness of Pi films was increased and the structure of imide ring was opened due to hydrolysis. The surface of Pi film was modified with sodium thiosulfate, potassium thiocyanate and thiourea as graft monomer. The IR spectra showed that all three kinds of grafted monomers could form chemical bonding with Pi films, and the grafting rate of Pi films was studied with sodium thiosulfate as graft monomer. The optimum monomer concentration was 5 g / L and grafting time was 12 min. The grafting temperature was 60 鈩，

本文編號：1382082