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.
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.
出处
《广西大学学报（自然科学版）》
CAS
CSCD
2005年第2期123-127,共5页
Journal of Guangxi University（Natural Science Edition）
基金
SupportedbyKeyProjectofNationalNaturalScienceFoundationofChina(59933060)
关键词
天然橡胶
炭黑
甲基丙烯酸镁
原位生成
交联密度
natural rubber
carbon black
magnesium methacrylate
in site preparation
crosslink density
