氢芳烃对聚烯烃电子辐照后氧化反应的影响

International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry Pub Date : 1992-12-01 DOI:10.1016/1359-0197(92)90212-X

Junichi Kubo , Kazushige Otsuhata

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引用次数: 0

摘要

研究了氢芳烃对高密度聚乙烯和等规聚丙烯辐射降解和后氧化的加性作用。同时，采用DPPH(N,N-二苯基-N′-苦基肼基)对羟基芳烃的自由基清除作用进行了研究。研究发现:1.(1)加入HHAP(多组分型氢芳烃，由石油高芳烃重馏分加氢生成)对辐射(空气中电子束)降解和聚烯烃后氧化均有明显的抑制作用;2.(2)DPPH试验表明，四氢化萘、八氢菲和HHAP具有明显的自由基清除能力;3.(3)HHAP的抑制作用可归因于其自由基清除能力。

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Effects of hydroaromatics on post-oxidation of polyolefins induced by electron irradiation

Additive effects of hydroaromatics towards radiation degradation and post-oxidation of high density polyethylene and isotactic polypropylene were investigated. At the same time, the radical scavenging effects of hydroaromatics were examined using DPPH(N,N-diphenyl-N'-picrylhydrazyl). It was found that:

1.
(1) the addition of HHAP (multi-component type hydroaromatics, produced by the hydrogenation of highly aromatic heavy fraction from petroleum) was obviously effective in inhibiting both radiation (electron beam in air) degradation and post-oxidation of polyolefins,
2.
(2) hydroaromatics (tetralin, octahydrophenanthrene and HHAP) have evident radical scavenging abilities from the tests using DPPH and
3.
(3) the inhibiting effects of HHAP can be attributed to its radical scavenging ability.

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International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry

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