| 原位生成甲基丙烯酸镁补强天然橡胶的研究 |
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| 引用本文： | 陈玉坤,贾德民,王小萍,贾志欣,丁剑平.原位生成甲基丙烯酸镁补强天然橡胶的研究[J].广西大学学报(自然科学版),2005,30(2):123-127. |
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| 作者姓名： | 陈玉坤 贾德民 王小萍 贾志欣 丁剑平 |
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| 作者单位： | 华南理工大学,材料科学与工程学院,中国,广州,510640;华南理工大学,材料科学与工程学院,中国,广州,510640;华南理工大学,材料科学与工程学院,中国,广州,510640;华南理工大学,材料科学与工程学院,中国,广州,510640;华南理工大学,材料科学与工程学院,中国,广州,510640 |
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| 基金项目： | Supported by Key Project of National Natural Science Foundation of China(59933060) |
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| 摘 要： | 研究了过氧化物硫化体系下，甲基丙烯酸镁(MDMA)、炭黑(CB)／MDMA补强天然橡胶的力学性能和交联密度．利用X射线衍射(XRD)证明了：在天然橡胶混炼过程中，氧化镁(MgO)和甲基丙烯酸(MAA)通过中和反应原位生成甲基丙烯酸镁．研究表明：MDMA和CB／MDMA可以有效地补强天然橡胶．交联密度的测定暗示NR／CB／MDMA和NR／MDMA硫化胶的离子键交联密度有着密切的联系，CB和MDMA的并用导致了离子键交联密度的增加，进而对天然橡胶硫化胶产生了协同补强效果．
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| 关 键 词： | 天然橡胶 炭黑 甲基丙烯酸镁 原位生成 交联密度 |
| 文章编号： | 1001-7445(2005)02-0123-05 |
| 修稿时间： | 2005年3月25日 |
Reinforcement of magnesium methacrylate prepared in situ to natural rubber |
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| CHEN Yu-kun,JIA De-min,WANG Xiao-ping,JIA Zhi-xin,DING Jian-ping.Reinforcement of magnesium methacrylate prepared in situ to natural rubber[J].Journal of Guangxi University(Natural Science Edition),2005,30(2):123-127. |
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| Authors: | CHEN Yu-kun JIA De-min WANG Xiao-ping JIA Zhi-xin DING Jian-ping |
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| Abstract: | The mechanical properties and crosslink density of peroxide-cured natural rubber (NR) reinforced with magnesium methacrylate (MDMA) and carbon black(CB)/MDMA were studied. The formation in situ of MDMA through the neutralization reaction of magnesia (MgO) and methacrylate acid (MAA) in the NR compounding process was peroved by wide-angle X-ray diffraction (XRD). The results showed that NR can be remarkably reinforced by MDMA and CB/MDMA. Crosslink density determinations imply that the mechanical properties of NR/CB/MDMA and NR/MDMA vulcanizates are closely related with ionic crosslink density,and the combination of CB and MDMA leads the increase of ionic crosslink density and hence produces synergistic reinforcement to NR vulcanizates. |
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| Keywords: | natural rubber carbon black magnesium methacrylate in site preparation crosslink density |
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