首页|芳纶Ⅲ纸基复合材料的制备与性能研究

芳纶Ⅲ纸基复合材料的制备与性能研究

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以芳纶Ⅲ短切纤维与间位芳纶沉析纤维为原料,使用湿法成形技术,制备芳纶Ⅲ纸基复合材料,研究芳纶Ⅲ短切纤维长度和占比对芳纶Ⅲ纸基复合材料匀度、抗张强度、弹性模量、断裂伸长率、撕裂度的影响规律.结果表明,在芳纶Ⅲ短切纤维长度6 mm,占比50%时,芳纶Ⅲ纸基复合材料的综合力学性能较好,其中抗张强度为2.66 kN/m,弹性模量为3 136 MPa,断裂伸长率为1.78%,撕裂度为2 912 mN.纸基复合材料拉伸断裂面因芳纶Ⅲ短切纤维长度和占比的不同而呈现不同的形状.相比于间位芳纶纸,芳纶Ⅲ纸基复合材料具有更好的高温尺寸稳定性,有望在复合增强领域进一步提升芳纶的应用前景.
Preparation and Properties of Aramid Ⅲ Paper-based Composite Materials
Aramid Ⅲ paper-based composite materials were prepared from aramid Ⅲ chopped fibers and meta-aramid fibrids using wet mold-ing technology to study the effects of aramid Ⅲ chopped fiber length and percentage on the homogeneity,tensile strength,modulus of elastic-ity,elongation at break,and tearing strength of aramid Ⅲ paper-based composite materials.The results showed that when the aramid Ⅲchopped fiber length was 6 mm and the percentage was 50%,the comprehensive mechanical properties of aramid Ⅲ paper-based composite materials were better,among which the tensile strength was 2.66 kN/m,the elastic modulus was 3 136 MPa,the elongation at break was 1.78%,and the tearing strength was 2 912 mN.The tensile fracture surfaces of paper-based composite materials showed different shapes due to the difference of the length and percentage of the aramid Ⅲ chopped fibers.Compared with the meta-aramid paper,the aramid Ⅲ pa-per-based composite materials had better high-temperature dimensional stability,which was expected to further enhance the application pros-pect of aramid in the field of composite reinforcement.

aramid Ⅲ chopped fiberfiber lengthfiber percentagemechanical propertiestensile fracture

廖思锽、宋梓至、龙金、王宜、熊志远、胡健

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华南理工大学轻工科学与工程学院,广东广州,510640

芳纶Ⅲ短切纤维 纤维长度 纤维占比 力学性能 拉伸断裂

国家重点研发计划

2021YFB3700104

2024

中国造纸
中国造纸学会 中国制浆造纸研究院

中国造纸

北大核心
影响因子:0.525
ISSN:0254-508X
年,卷(期):2024.43(3)
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