Hirai Takayuki, Onochi Yusaku, Kawada Jumpei
Material and Processing Department, Polymer Processing and Mechanics Laboratories, Toyota Central R&D Laboratories, Inc. 41-1 Yokomichi Nagakute 480-1192 Japan
Lightweight Material Development Group, Organic Material Dept., Organic Material Engineering Div., Toyota Motor Corporation 1 Toyota-cho Toyota Aichi 471-8572 Japan.
RSC Adv. 2020 Apr 17;10(26):15132-15138. doi: 10.1039/d0ra02344b. eCollection 2020 Apr 16.
Ternary polymer blends comprising miscible and immiscible components are examined to improve the mechanical properties of polyamide 6 (PA6) under humid and high-temperature conditions. Miscible polymers increase the glass transition temperature ( ), owing to their strong inter-molecular interactions, while phase-separated immiscible polymers reinforce the physical properties of PA6 as filler materials. Ternary blends exhibit these combined miscible and immiscible component contributions. Thus, in this study, ternary blends comprising PA6, polyethylene terephthalate (PET, immiscible component), and phenol novolac (PN, miscible component) are prepared by melt mixing. The PA6 stiffness in the water-absorbed state is reinforced by PET. Moreover, the proposed PA6/PET/PN ternary blends exhibit higher values and lower water absorption rates than those of the PA6/PET binary blend, owing to the PN contribution. The PET and PN contributions are achieved independently and can be controlled the composition ratios of the component polymers. Multifaceted property tailoring is thus demonstrated.
研究了包含可混溶和不可混溶组分的三元聚合物共混物，以改善聚酰胺6（PA6）在潮湿和高温条件下的机械性能。可混溶聚合物由于其强烈的分子间相互作用而提高了玻璃化转变温度（ ），而相分离的不可混溶聚合物作为填充材料增强了PA6的物理性能。三元共混物表现出这些可混溶和不可混溶组分的综合贡献。因此，在本研究中，通过熔融共混制备了包含PA6、聚对苯二甲酸乙二酯（PET，不可混溶组分）和酚醛清漆（PN，可混溶组分）的三元共混物。PET增强了吸水状态下PA6的刚度。此外，由于PN的作用，所提出的PA6/PET/PN三元共混物比PA6/PET二元共混物表现出更高的 值和更低的吸水率。PET和PN的作用是独立实现的，并且可以通过组分聚合物的组成比来控制。因此证明了多方面的性能定制。
