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| MMA对SBS胶接枝与结构表征 |
| Graft and Structure Analysis of SBS with MMA |
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| DOI：10.3969/j.issn.1671-5322.2003.01.007 |
| 中文关键词: MMA SBS 接枝 表征 |
| 英文关键词: MMA SBS graft structure analysis |
| 基金项目: |
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| 中文摘要: |
| 研究了用MMA对SBS胶接枝改性方法,并用FTIR红外光谱和TG-DTA差热分析仪对产物SBS-g-MMA进行结构表征和性能测定.结果表明:MMA:SBS为0.75～1.0(质量比)、BPO的用量为2%～3%(反应物)、反应温度为80～85 ℃、反应时间为4～5 h,可获得接枝效率达12%～14%、粘度为1*$000～1*$500 mPa*s的理想接枝胶,SBS-g-MMA胶的FTIR红外光谱上含有-C=C-双键吸收峰,表明SBS-g-MMA接枝胶能进一步固化和交联,同时也说明该胶易发生凝胶现象;TG-DTA差热分析谱图显示SBS-g-MMA胶比SBS胶的热失重温度要高,表明MMA对SBS接枝改性可提高SBS胶的热稳定性. |
| 英文摘要: |
| This paper mainly investigated the graft copolymerization of SBS with MMA in solution. The structure of the product was analysed FTIR spectra and TG-DTA spectra. The result showed that the feasible SBS-g-MMA adhesive with graft efficiency 12-14 percent and viscosity 1000-1500 MPa·S was observed when it was used the mass ratio of MMA to SBS as 0.75-1.0(mass ratio),the BPO dosage as 2-3 percent(reaction matter), the reaction temperature as 80-85 ℃ and the reaction time as 4-5 hours. The FTIR of SBS-g-MMA spectra had -C=C- double bond absorption apex It was showed that SBS-g-MMA could be further crosslinked and the graft copolymerization was easy to gel. The DTA temperature of SBS-g-MMA of TG-DTA spectra was higher than that of SBS. It was showed the graft modification of SBS using MMA could improve thermal stability of adhesive. |
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