Effects of high functionality polyol on the structure and properties of rigid polyurethane foam

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2021-07-28 DOI:10.1080/14658011.2021.1959132

Yumei Luo, Z. Ye, Jingcun Yan

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引用次数: 2

Abstract

ABSTRACT High performance rigid polyurethane foam (RPUF) has been designed by using hyperbranched polyurethane (HBPU) polyol with high functionality to replace traditional polyol. The influences of different types of polyol on the apparent density and heat deformation temperature of RPUF were studied. The microstructures, including cell structure, cell diameter and distribution, were characterised by SEM. Effects of polyol types on the cell structure of RPUF were discussed. Thermal resistance and thermal stability were measured by the thermal deformation vicat temperature meter and TGA. Thermal conductivity of RPUF was characterised by Hot Disk, and the mechanical properties were also measured. Compared with the RPUFs obtained from commercial polyether polyols, RPUF-HBPU exhibited enhanced thermal resistance. Besides, the compressive strength, flexural strength and tensile strength were up to 4.5, 4 and 3.5 times, respectively, than that of traditional RPUF as well. The as-prepared RPUF-HBPU displayed low thermal conductivity/thermal diffusion and good thermal stability.

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高官能团多元醇对硬质聚氨酯泡沫塑料结构和性能的影响

摘要采用高性能超支化聚氨酯(HBPU)多元醇取代传统多元醇，设计了高性能硬质聚氨酯泡沫塑料(RPUF)。研究了不同类型多元醇对RPUF表观密度和热变形温度的影响。通过扫描电镜对其微观结构进行了表征，包括细胞结构、细胞直径和分布。讨论了不同类型多元醇对RPUF细胞结构的影响。采用热变形维卡温度计和热重热分析仪测定了材料的热阻和热稳定性。采用热盘法对RPUF的导热性能进行了表征，并对其力学性能进行了测试。与商用聚醚多元醇制备的rpuf相比，RPUF-HBPU具有更强的耐热性。抗压强度、抗折强度和抗拉强度分别是传统RPUF的4.5倍、4倍和3.5倍。制备的RPUF-HBPU具有低导热系数/热扩散和良好的热稳定性。

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.