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对3种PE100管材专用料JHMGC100S、YGH041及P600进行了基本结构性能及毛细管流变行为、动态流变行为的研究。结果表明:190℃时,JHMGC100S的表观黏度与表观压力要高于P600和YGH041;当温度升高到230℃,3种专用料的不稳定流动现象明显改善,毛细管流变行为几乎无差别。动态流变研究表明:在低频下,JHMGC100S的复数黏度要高于其他两种专用料;在高频下,JHMGC100S的复数黏度介于其他两种专用料之间。在低频下,JHMGC100S的储能模量高于YGH041和P600;在高频下,JHMGC100S与YGH041的储能模量接近均,高于P600的储能模量。
The basic structural properties, capillary rheological behavior and dynamic rheological behavior of three PE100 pipe materials JHMGC100S, YGH041 and P600 were studied. The results showed that the apparent viscosity and apparent pressure of JHMGC100S at 190 ℃ were higher than those at P600 and YGH041. When the temperature was raised to 230 ℃, the unsteady flow of the three kinds of special materials significantly improved and the rheological behavior of capillary hardly changed . The dynamic rheological studies show that at low frequencies, the complex viscosity of JHMGC100S is higher than that of the other two specialty materials. At high frequencies, the complex viscosity of JHMGC100S is between that of the other two specialty materials. At low frequencies, the storage modulus of JHMGC100S is higher than that of YGH041 and P600. At high frequency, the storage modulus of JHMGC100S and YGH041 are close to each other, higher than the storage modulus of P600.