摘要
经γ辐照后所有样品的储能模量(E′)都有所增加,从阻尼因子(tanδ)的温度谱上所观察到β和α转变温度随辐照剂量的增加向高温方向移动。热分析结果表明,辐照后样品的热学参数T_m、ΔH_m和T_d随剂量的增加而降低。
The effect of y- radiation on dynamic viscoelastic properties and thermal behavior of low density polyethylene (LDPE) has been investigated. The store energy modulus (E') of the irradiated samples is increased. The (3 and a transition is shifted to higher temperature with increase of irradiation dose. The results of thermal analysis show that crystal melting temperature (Tm), enthalpy (△Hm) and crystal disapperance temperature (Td) for irradiated samples are decreased with increase of dose.
出处
《核技术》
CAS
CSCD
北大核心
1993年第10期619-622,共4页
Nuclear Techniques
关键词
低密度聚乙烯
Γ辐射
力学性质
γ- irradiation Low density polyethylene(LDPE) Dynamic viscoelastic property Thermal behavior
