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A novel technique in the foaming process of EPDM/PP via microwave radiation: the effect of blend compatibilization and additive encapsulation

机译:通过微波辐射的EPDM / PP发泡过程中的一种新型技术:混合相容性和添加剂包封的影响

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摘要

Uniform voids, greater cell sizes, and their better distribution in the foaming of EPDM/PP could be achieved using microwave radiation with the peerless approach of employing encapsulated additives. The introduction of PP-g-MA as a compatibilizer proved to be an effective way to achieve better dispersion of PP droplets in the matrix of EPDM, and also to improve the elongational viscosity at higher extension rates. The ultimate foam density was lowered from 0.71 to about 0.59 g cm(-3) as a result of applying foaming agents, along with iron oxide particles, encapsulated by urea-formaldehyde polymer at a microwave oven power of 900 W. It is of vital significance that the mean cell sizes from this technique reached 435 microns, compared to 277 microns attained in conventional methods.
机译:可以使用微波辐射与使用包封添加剂的无与伦比的方法来实现均匀的空隙,更高的细胞尺寸和它们在EPDM / PP的发泡中的更好分布。 PP-G-MA作为增容剂的引入被证明是在EPDM基质中实现PP液滴的更好分散的有效方法,以及在更高的延伸速率下提高伸长率粘度。 由于施用发泡剂,以及氧化铁颗粒,通过在900W的微波炉功率下涂覆氧化铁颗粒,因此将极限泡沫密度降低到约0.71至约0.59g cm(-3)。它是900W的微波炉功率的尿素 - 甲醛聚合物包封 该技术的平均电池尺寸的意义达到435微米,而常规方法中达到277微米。

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