玻纤/纳米粒子协同增强聚碳酸酯注射产品的性能研究

祖梦幻; 贾子文; 章煌; 乔海玉

doi:10.3969/j.issn.1674-6457.2026.07.021

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精密成形工程 ›› 2026, Vol. 18 ›› Issue (7) : 228-237. DOI: 10.3969/j.issn.1674-6457.2026.07.021

高分子材料成形

玻纤/纳米粒子协同增强聚碳酸酯注射产品的性能研究

祖梦幻, 贾子文, 章煌, 乔海玉^*

作者信息 +

Synergistic Enhancement of Properties in Glass Fiber/Nanoparticle Reinforced Polycarbonate Injection-molded Products

ZU Menghuan, JIA Ziwen, ZHANG Huang, QIAO Haiyu^*

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文章历史 +

摘要

目的探究低折射率氟化镁纳米粒子引入对玻纤增强聚碳酸酯注射制品光学与力学性能的耦合影响及微观作用机理。方法以玻璃纤维增强PC复合材料作为研究对象,通过引入低折射率的氟化镁纳米粒子减少基体PC与玻璃纤维之间的折射率差异,分析复合材料在成型性能、光学性能和力学性能方面的变化规律。结果（1）注塑阶段的温度对PC/GF复合材料光学性能的影响较小。（2）引入氟化镁纳米粒子使PC/GF/MgF₂复合材料的透过率下降,雾度增加,即光学性能恶化。这可能主要是由于GF和MgF₂都充当了散射点,引起光线散射与偏折,造成透过率下降,雾度增加。（3）厚度增加使复合材料光学性能下降更加明显。当厚度为10 mm时,PC/GF/MgF₂复合材料的透过率下降为0。（4）增加GF和纳米粒子使复合材料的强度和模量提升,但是断裂伸长率和韧性大幅下降。相比于PC,PC/GF/MgF₂复合材料的强度提升6.37%,但断裂伸长率降至PC的28.41%。（5）断面SEM显示,PC/GF/MgF₂复合材料界面处有大量玻纤拔出。结论本研究为玻纤增强PC复合材料注射成型光学产品优化提供了科学尝试。

Abstract

The work aims to investigate the coupled effects and microscopic mechanisms of incorporating low-refractive-index magnesium fluoride nanoparticles on the optical and mechanical properties of glass fiber reinforced polycarbonate injection-molded products. With glass fiber reinforced PC composite as the research subject, the low-refractive-index magnesium fluoride (MgF₂) nanoparticles were introduced to reduce the refractive index difference between the PC matrix and the glass fibers. The changes in the molding properties, optical properties, and mechanical properties of the composite were analyzed. The results indicated that: (1) The temperature during the injection molding stage had a minor impact on the optical properties of PC/GF composites. (2) The introduction of magnesium fluoride (MgF₂) nanoparticles led to a decrease in transmittance and an increase in haze for PC/GF/MgF₂ composites, indicating deterioration in optical performance. This was primarily attributed to both the glass fibers and MgF₂ particles acting as scattering sites, which caused light scattering and deflection, resulting in reduced transmittance and increased haze. (3) An increase in thickness led to a more significant decline in the optical performance of the composites. When the thickness reached 10 mm, the transmittance of PC/GF/MgF₂ composites dropped to zero. (4) The incorporation of glass fibers and nanoparticles enhanced the strength and modulus of the composites, but significantly reduced the elongation at break and toughness. Compared to pure PC, the strength of PC/GF/MgF₂ composites increased by 6.37%, while its elongation at break dropped to 28.41% of that of the pure PC. (5) SEM images of the fracture surface revealed extensive glass fiber pull-out at the interfaces of the PC/GF/MgF₂ composites. This work provides a scientific basis for optimizing the injection molding process of glass fiber reinforced PC composites for optical products.

导出引用

祖梦幻, 贾子文, 章煌, 乔海玉. 玻纤/纳米粒子协同增强聚碳酸酯注射产品的性能研究[J]. 精密成形工程. 2026, 18(7): 228-237 https://doi.org/10.3969/j.issn.1674-6457.2026.07.021

ZU Menghuan, JIA Ziwen, ZHANG Huang, QIAO Haiyu. Synergistic Enhancement of Properties in Glass Fiber/Nanoparticle Reinforced Polycarbonate Injection-molded Products[J]. Journal of Netshape Forming Engineering. 2026, 18(7): 228-237 https://doi.org/10.3969/j.issn.1674-6457.2026.07.021

中图分类号： TQ320.66

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