Zn(MAA)_2和Mg(MAA)_2用量对绝热层与金属粘接性能的影响  

Effect of contents of Zn(MAA)_2 and Mg(MAA)_2 on insulation/metal adhesion

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作  者:高国新[1] 谭溢波[2] 孙捷[2] 郑元锁[2] 金志浩[1] 

机构地区:[1]西安交通大学材料科学与工程学院,西安710049 [2]西安交通大学理学院,西安710049

出  处:《固体火箭技术》2009年第3期344-347,共4页Journal of Solid Rocket Technology

摘  要:将Zn(MAA)2和Mg(MAA)2分别添加到EPDM/NBR橡胶中,制成强粘接型柔性绝热层材料,分别研究了其各自用量对绝热层材料与45#钢之间粘合性能的影响。结果显示,即使不使用任何表面粘合剂,向EPDM/NBR橡胶中添加少量Zn(MAA)2或Mg(MAA)2后,均能显著提高绝热层与45#钢之间的粘接强度;但随着Zn(MAA)2用量增加,绝热层材料与金属的扯离强度先增加后急剧降低,当Zn(MAA)2用量为2phr时,粘接强度达最佳值,扯离试样的破坏方式主要为界面破坏;而随着Mg(MAA)2用量增加,绝热层与45#钢之间的粘接强度不断增大,且均大于添加相同量Zn(MAA)2时的强度,粘接试样的破坏形式均为橡胶本体破坏,当Mg(MAA)2用量为2~7phr时,粘接强度均高于4.58MPa。The flexible insulation was prepared by adding Zn( MAA)2 or Mg( MAA)2 into the blended EPDM/NBR. The effect of the content of Zn(MAA) 2 and Mg(MAA) 2 on the bonding property between 45# steel and insulation was investigated respectively. The results show that a small amount of Zn( MAA)2 or Mg( MAA)2 in the blended EPDM/NBR both can improve obviously the bonding strength between 45# steel and insulation without using any other adhesive. With the increase of the contents of Zn( MAA)2 ,the bonding strength increases firstly, but then sharply decreases after 2 phr. The destruction of all the samples added with Zn (MAA) 2 oecurs on the bonding surface when pulled off. However, when Mg ( MAA ) 2 is added instead of Zn ( MAA ) 2, the bonding strength between 45# steel and insulation increases continuously with the increasing the contents of Mg( MAA)2 ,and it is higher than that of insulation with in the same content Zn(MAA) 2. And all the samples destructive modes happen within the insulation. The bonding strength of all the samples are all above 4.58 MPa containing 2 -7 phr Mg(MAA) 2.

关 键 词:Zn(MAA)2 Mg(MAA)2 三元乙丙 绝热层 粘接强度 

分 类 号:V512[航空宇航科学与技术—航空宇航推进理论与工程]

 

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