反应型聚氨酯热熔胶的制备及其粘接性能的研究

doi:10.3969/j.issn.1001-4381.2013.08.009

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Abstract One kind of heat resistant and high bonding strength of reactive hot melt polyurethane adhesive (RHMPA) was successfully synthesized using a two-step bulk polymerization with 4,4'-diphenlymethane diisocyanate (MDI), poly(tetramethylene glycol) (PTMG), and 1,4-butanediol (1,4-BDO). The effect of RHMPA chain extended at different time and temperatures on adhesive performance was studied by single lap shear strength and tensile strength of butt joints. The results showed that the bonding strength increased with the chain extending reaction time and temperature.Moreover,the higher the reaction temperature,the increasing trend of butt bond strength was more obvious.In addition,the influence on adhesive performance of the RHMPA dealed with hydrochloric acid solution,NaON aqueous solution,hot water at 80℃,high and low temperature were also investigated. The results showed that the bonding strength of the RHMPA almost unchanged and exhibited an excellent chemical resistance to these conditions.

Key words： polyurethane reactive hot melt adhesive chain extended reaction kinetics bonding strength

Received: 26 February 2012 Published: 20 August 2013

ZTFLH:

TQ436⁺.4

Corresponding Authors: 杨荣杰(1963-),男,教授,博士生导师,从事POSS阻燃材料、固体推进剂、高分子功能材料的研究,联系地址:北京市海淀区中关村南大街5号北京理工大学材料科学与与工程学院(100081),E-mail:yrj@bit.edu.cn E-mail: yrj@bit.edu.cn

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	TANG Qi-heng
	HE Ji-yu
	AI Qing-song
	YANG Rong-jie

Cite this article:

TANG Qi-heng,HE Ji-yu,AI Qing-song, et al. Synthesis and Bonding Properties of Reactive Hot Melt Polyurethane Adhesives[J]. Journal of Materials Engineering, 2013, (8): 55-59.

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http://jme.biam.ac.cn/EN/10.3969/j.issn.1001-4381.2013.08.009 OR http://jme.biam.ac.cn/EN/Y2013/V/I8/55

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