改性AlN/BN导热填料对玻璃纤维增强丁苯树脂复合材料性能的影响
Effect of Modified AlN/BN Thermal Conductive Fillers on Properties of Glass Fiber Reinforced Styrene-Butadiene Resin Composites
摘 要
采用KH570硅烷偶联剂在无水条件下对AlN和BN进行改性处理，并作为导热填料填充至玻璃纤维增强丁苯树脂复合材料中，研究了不同导热填料对复合材料吸水率、导热性能、介电性能和力学性能的影响。结果表明：2种导热填料的填充均会提高复合材料的吸水率，但相比于未改性填料，改性填料的填充对复合材料吸水率的提升幅度很小；随着改性AlN填充量的增加，复合材料的介电常数和介电损耗明显增加，介电性能下降，弯曲强度先增加后降低；随着改性BN填充量的增加，复合材料的介电常数增加，介电损耗降低，弯曲强度增大；2种改性导热填料均能提高复合材料的导热性能，与单组分填充相比，改性AlN和改性BN混杂填充对复合材料导热系数的提升作用更强。
氮化硼
表面处理
丁苯树脂基复合材料
导热系数
介电性能
aluminum nitride
boron nitride
surface treatment
styrene-butadiene resin matrix composite
thermal conductivity
dielectric property
Abstract
AlN and BN were modified with silane coupling agent KH570 under anhydrous conditions, and then were used as thermal conductive fillers added into glass fiber reinforced styrene-butadiene resin composites. The effect of different thermal conductive fillers on the water absorption, thermal conductivity, dielectric properties and mechanical properties of the composite was studied. The results show that filling the two thermal conductive fillers could improve the water absorption of the composite; comparing with the unmodified filler, the filling of the modified filler had a small increase in water absorption of the composite. With the increase of modified AlN content, the dielectric constant and dielectric loss of the composite increased significantly, indicating the dielectric properties decreased, and the flexural strength increased first and then decreased. With the increase of modified BN content, the dielectric constant of the composite increased, the dielectric loss decreased, and the flexural strength increased. The two modified thermal conductive fillers could improve the thermal conductivity of the composite. Compared with single component filling, modified AlN and modified BN hybrid filling had a stronger effect on improving the thermal conductivity of the composite.
中图分类号 TQ324 DOI 10.11973/jxgccl202302013
所属栏目 材料性能及应用
基金项目
收稿日期 2021/8/26
修改稿日期 2022/10/13
网络出版日期
作者单位点击查看
备注马峰岭(1988-),男,河南开封人,高级工程师,硕士
引用该论文: MA Fengling,XU Qiaoyun,JIN Shilei. Effect of Modified AlN/BN Thermal Conductive Fillers on Properties of Glass Fiber Reinforced Styrene-Butadiene Resin Composites[J]. Materials for mechancial engineering, 2023, 47(2): 73～78
马峰岭,许巧云,金石磊. 改性AlN/BN导热填料对玻璃纤维增强丁苯树脂复合材料性能的影响[J]. 机械工程材料, 2023, 47(2): 73～78
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【11】王宝玉, 张苏明, 兰玉顺, 等.KH-570表面改性超细SiO2的研究[J].北京化工大学学报(自然科学版), 2010, 37(5):30-34. WANG B Y, ZHANG S M, LAN Y S, et al.Experimental studies of the surface modification of silica by the silane coupling agent γ-methacryloxypropyltrimethoxysilane(KH-570)[J].Journal of Beijing University of Chemical Technology (Natural Science Edition), 2010, 37(5):30-34.
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