| PS/EPDM反应性共混物的研究 |
| Study on reactive PS/EPDM blend |
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| DOI： |
| 中文关键词: 聚苯乙烯 EPDM 三氯化铝 Friedel-Crafts烷基化反应 接枝共聚 |
| 英文关键词: polystyrene EPDM aluminum trichloride Friedel-Crafts alkylation graft copolymerization |
| 基金项目:江苏省自然科学基金资助项目（BK2003028） |
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| 中文摘要: |
| 在熔融状态下，利用Friedel-Crafts烷基化反应原位生成聚苯乙烯（PS）/EPDM共混物，考察路易斯酸品种、用量、混炼温度和混炼时间等对共混物性能的影响。结果表明，选择三氯化铝作为PS和EPDM大分子间形成接枝共聚物EPDM-g-PS的催化剂时效果较好；EPDM-g-PS的生成使PS/EPDM共混物的熔体质量流动速率和PS相的玻璃化温度下降，增大了PS和EPDM两相的界面结合力，从而提高了共混物的性能；当PS/EPDM共混比为60/40、三氯化铝用量为3份、混炼温度为140 ℃、混炼时间为5 min时，共混物综合性能较好。 |
| 英文摘要: |
| A polystyrene(PS)/EPDM blend formed in situ by Friedel-Crafts alkylation in melt state was developed.The effects of the type and addition level of Lewis acid and the temperature and time of mixing on the properties of blend were investigated.The results showed that a better EPDM-g-PS was obtained by using aluminum trichloride as catalyst；the formation of EPDM-g-PS copolymer made the melt mass flow rate of PS/EPDM blend and the glass transition temperature of PS phase decrease，the bonding force on the interface between PS and EPDM increase，and thus the properties of blend improve；and a PS/EPDM blend with better comprehensive properties was obtained when PS(60)/EPDM(40)，3 phr aluminum trichloride，140 ℃ mixing temperature and 5 min mixing time were used. |
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