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首页> 外文期刊>Journal of Applied Polymer Science >Structure and properties of polyamides-epoxidized elastomers blends
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Structure and properties of polyamides-epoxidized elastomers blends

机译：聚酰胺-环氧化弹性体混合物的结构和性能

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Blends of aliphatic polyamides (PA6, PA66, and PA12), containing 0-15 wt % nonepoxidized or epoxidized elastomers (statistical copolymer butadiene-styrene BS/EBS or linear block copolymer styrene-butadiene-styrene SBS/ESBS) were investigated. For PA6-elastomer blends, taken as an example, it was shown that with increasing blending time, mechanical properties of blends increase, especially, if ESBS copolymer is used. It can be treated as an indirect sign of reactions between components. It was also found that in blends considerable changes of glass temperatures of components occur. Polyamides in blends with elastomers have smaller heats of fusion in comparison with virgin polyamides. It testifies to hindering of PA crystallization by elastomers. In some cases, significant shifts of melting points are also observed. Measurements of water contact angle show that all blends have very similar values of contact angles, which are lower than those of virgin polyamides. Elastomer content does not also affect the blend water uptake. However, it depends on the polyamide and elastomer type contrary to contact angle. Highest water uptake changes are observed in blends of PA66, especially for epoxidized elastomers. (c) 2005 Wiley Periodicals, Inc.
机译：研究了脂族聚酰胺（PA6，PA66和PA12）的共混物，它们包含0-15 wt％的非环氧化或环氧化弹性体（统计共聚物丁二烯-苯乙烯BS / EBS或线性嵌段共聚物苯乙烯-丁二烯-苯乙烯SBS / ESBS）。以PA6-弹性体共混物为例，显示出随着共混时间的增加，共混物的机械性能提高，特别是如果使用ESBS共聚物。可以将其视为组件之间反应的间接标志。还发现在共混物中，组分的玻璃温度发生相当大的变化。与原始聚酰胺相比，与弹性体共混的聚酰胺具有较小的熔融热。它证明了弹性体阻碍了PA结晶。在某些情况下，还观察到熔点的明显变化。水接触角的测量结果表明，所有共混物的接触角值都非常相似，低于纯聚酰胺。弹性体含量也不影响混合水的吸收。但是，它取决于与接触角相反的聚酰胺和弹性体类型。在PA66的共混物中观察到最高的吸水率变化，尤其是对于环氧化弹性体。 （c）2005年Wiley Periodicals，Inc.

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