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Processing method, properties and application of functionally graded polymer materials based on the mixtures of poorly compatible epoxy resins
Polymers and Polymer Composites ( IF 2.1 ) Pub Date : 2021-05-11 , DOI: 10.1177/09673911211014763
LM Amirova 1 , KA Andrianova 1 , LR Amirova 1, 2
Affiliation  

In this study, the method of manufacturing of functionally graded polymer materials based on the mixtures of poorly compatible epoxy resins is suggested. A novel processing method allowing to control the filler distribution across the section of graded materials depending on the operating conditions was developed. The essence of the method is self-settling of the blend consisting of two liquid epoxy resins with different viscosities and densities. Depending on mixing and injecting order the functional additive having antifriction, anti-adhesive or heat-protective properties can be distributed either homogenously or nonuniformly. In the latter case after curing the functionally graded material can be produced. Based on the formulations of poorly compatible phenol novolac epoxy resin NPPN-638 and active diluent triglycidyl phosphate (TGP), new functionally graded polymer materials with continuous change of composition and properties were developed. The functional additive (graphite, glass microspheres, polytetrafluoroethylene powder) concentrates in the top layer of the self-settled epoxy mixture while the bottom layer is enriched by TGP which possess advantaged adhesion to various substrates. As a result, antifriction, anti-adhesive, heat-protective and intumescent flame retardant coatings with improved performance were obtained.



中文翻译:

基于相容​​性差的环氧树脂混合物的功能梯度聚合物材料的加工方法,性能和应用

在这项研究中,提出了基于相容性差的环氧树脂混合物的功能梯度聚合物材料的制造方法。开发了一种新颖的加工方法,该方法可以根据操作条件控制填料在整个渐变材料截面上的分布。该方法的本质是由两种具有不同粘度和密度的液态环氧树脂组成的共混物的自动沉降。取决于混合和注入顺序,具有减摩,抗粘或热保护性能的功能性添加剂可以均匀或不均匀地分布。在后一种情况下,可以在固化后生产功能梯度材料。根据相容性差的酚醛酚醛清漆环氧树脂NPPN-638和活性稀释剂磷酸三缩水甘油酯(TGP)的​​配方,开发了具有不断变化的成分和性能的新型功能梯度聚合物材料。功能性添加剂(石墨,玻璃微球,聚四氟乙烯粉末)集中在自固定环氧混合物的顶层,而底层则由TGP富集,TGP具有对各种基材的优越粘合性。结果,获得了具有改善的性能的减摩,抗粘,热保护和膨胀型阻燃涂料。

更新日期:2021-05-11
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