| 交联方法对交联聚乙烯结晶行为的影响 |
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| 引用本文： | 龚方红,李锦春.交联方法对交联聚乙烯结晶行为的影响[J].应用化学,1998,15(5):31-4. |
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| 作者姓名： | 龚方红 李锦春 |
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| 作者单位： | 江苏石油化工学院材料工程系 |
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| 摘 要： | 研究了硅烷交联聚乙烯和过氧化物交联聚乙烯由于结晶和交联的顺序不同而造成的结晶行为的差异，交联密度相同时，过氧化物交联聚乙烯的结晶度和熔点明显低于硅烷交联聚乙烯，交联聚烯非等温结晶动力学表明：交联前后聚乙烯的Ａｖｒａｍｉ指数ｎ基本不变，交联后，半结晶期ｔ１／２延长、结晶速率常数ＺＣ下降，其中过氧化物交联聚乙烯的变化幅度大于硅烷交联聚乙烯。
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| 关 键 词： | 硅烷交联 聚乙烯 过氧化物交联 结晶 交联改性 |
| 收稿时间： | 1998-01-20 |
On the crystallization Behavior of Silane Crosslinked LDPE and Peroxide Crosslinked LDPE |
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| Gong Fanghong,Li Jinchun,Yu Qiang,Lin Mingde.On the crystallization Behavior of Silane Crosslinked LDPE and Peroxide Crosslinked LDPE[J].Chinese Journal of Applied Chemistry,1998,15(5):31-4. |
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| Authors: | Gong Fanghong Li Jinchun Yu Qiang Lin Mingde |
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| Institution: | Gong Fanghong,Li Jinchun,Yu Qiang,Lin Mingde * |
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| Abstract: | The crystallization behavior of silane crosslinked LDPE and peroxide crosslinked LDPE have been compared by using DSC and WAXD techniques. It is found that the crystallinity and melt point of the peroxide crosslinked LDPE are lower than those of the silane crosslinked LDPE when their crosslinking densities are of the same value. DSC measurements show that after crossinking the Avrami exponents ( n ) have no significant change, but the rate constants of crystallization decrease and the half crystallization times increase, whereas the variation range for the peroxide crosslinked LDPE is greater than that for the silane crosslinked LDPE. |
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| Keywords: | peroxide crosslinked LDPE silane crosslinked LDPE crosslinking density crystallinity non isothermal crystallization kinetics |
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