Bibliographic Details
| Title: |
玻纤增强 PA 6 导热复合材料的制备及性能研究. (Chinese) |
| Alternate Title: |
Preparation and properties of glass-fiber-reinforced PA 6 thermally conductive composites. (English) |
| Authors: |
邱 旭 |
| Source: |
China Synthetic Fiber Industry; dec2025, Vol. 48 Issue 6, p23-27, 5p |
| Subject Terms: |
THERMAL conductivity, ALUMINUM oxide, MELT processing (Manufacturing process), GLASS fibers, FIBROUS composites, POLYAMIDES, MECHANICAL behavior of materials |
| Abstract (English): |
Glass-fiber(GF)-reinforced high-flow nylon 6 / alumina (HPA 6 / Al2O3 ) thermally conductive composites were prepared via melt blending process using HPA 6 as the matrix, Al2O3 as the thermally conductive filler, and GF as the reinforcing material. The effects of Al2O3 content and particle size, as well as GF content, on the thermal conductivity and mechanical properties of the composites were investigated. The results showed that as the Al2O3 filler content increased, the thermal conductivity of the composites improved, reaching a percolation threshold when the filler mass fraction exceeded 50%, while the mechanical properties began to decline once the filler content surpassed 60%; increasing the Al2O3 particle size also improved the thermal conductivity; when the particle size of Al2O3 filler increased from 0. 7 μm to 20. 0 μm, the thermal conductivity of the composite increased from 0. 73 W/ (m·K) to 1. 05 W/ (m·K), albeit with reduced mechanical properties; a combination of Al2O3 with different particle sizes did not significantly improve either thermal conductivity or mechanical properties; and the addition of GF effectively enhanced the mechanical properties; when the mass fraction and particle size of Al 2O3 filler were 60% and 20. 0 μm, respectively, and the mass fraction of GF was 10%, the composites exhibited a tensile strength of 100. 71 MPa, flexural strength of 138. 98 MPa, and flexural modulus of 11. 75 GPa, though the thermal conductivity decreased to 0. 92 W/ (m·K). [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
采用熔融共混工艺, 以高流动性尼龙 6 (HPA 6) 为基体, 三氧化二铝 (Al2O3) 为导热填料, 玻璃纤维 (GF) 为增强材料, 制备了 GF 增强 HPA 6/Al2O3 导热复合材料, 研究了 Al 2O3 的添加量, 粒径及 GF 添加量 对复合材料导热性能及力学性能的影响。 结果表明: 随着 Al2O3 填料含量增加, 复合材料的导热系数提高, 并在填料质量分数超过 50% 时出现导热逾渗阈值, 但当填料质量分数超过 60% 后复合材料力学性能开始下 降; 增大 Al2O3 填料粒径有助于提升导热性能, 当 Al2O3 填料粒径由 0. 7 μ m 增至 20. 0 μ m 时, 复合材料导热 系数由 0. 73 W /( m · K ) 增至 1. 05 W /( m · K ), 但力学性能下降; 不同粒径的 Al2O3 填料复配使用对复合材 料导热性能和力学性能的改善不明显; GF 的引入能提高复合材料的力学性能, 当 Al2O3 填料质量分数为 60%, 粒径为 20. 0 μ m, GF 的质量分数为 10% 时, 复合材料的拉伸强度, 弯曲强度, 弯曲模量分别达 100. 71 MPa, 138. 98 MPa, 11. 75 GPa, 但导热系数降至 0. 92 W /( m · K )。 [ABSTRACT FROM AUTHOR] |
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