改性芳纶浆粕增强橡胶基复合材料的性能研究
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摘要
采用戊二醛、二甲基乙酰胺(DMAC)/氯化锂(LiCl)/磷酸溶液对对位芳纶浆粕纤维表面改性,形成了交联网状结构。以硅橡胶生胶为主要原料,加入各类填料经过混炼、硫化后制得对位芳纶浆粕/硅橡胶混炼胶复合材料。研究结果表明,以2%戊二醛为交联剂,芳纶浆粕含量为10份条件下,制得的硅橡胶复合材料性能较好。硅橡胶复合材料的邵尔A型硬度达到86度,拉伸强度达到8.9MPa,伸长率达到128%,撕裂强度达到12.8kN/m,压缩永久变形为55%。制得的硅橡胶复合材料比普通硅橡胶具有优异的力学性能,在密封材料领域有广泛的应用前景。
The surface of para-aramid pulp fiber was modified and reformed network structure was formed by using glutaraldehyde,DMAc/LiCl/phosphoric acid solution.The silicone rubber was used as the main raw material,which were added various fillings after mixing and vulcanization to prepare fiber reinforced silicone rubber compound materials.The mechanical properties of material were investigated and the fracture appearance was studied.The results showed that when the material with 2% glutaraldehyde as crosslinking agent and the content of aramid pulp was 10 showed excellent performance.The shore A hardness reached 86 degrees,the tensile strength reached 8.9 MPa,the elongation reached 128%,the tearing strength reached 12.8 kN/m,the compression permanent deformation was 55%.The obtained material had superior mechanical properties than ordinary silicone rubber,and had wide application in the field of sealing materials.
The surface of para-aramid pulp fiber was modified and reformed network structure was formed by using glutaraldehyde,DMAc/LiCl/phosphoric acid solution.The silicone rubber was used as the main raw material,which were added various fillings after mixing and vulcanization to prepare fiber reinforced silicone rubber compound materials.The mechanical properties of material were investigated and the fracture appearance was studied.The results showed that when the material with 2% glutaraldehyde as crosslinking agent and the content of aramid pulp was 10 showed excellent performance.The shore A hardness reached 86 degrees,the tensile strength reached 8.9 MPa,the elongation reached 128%,the tearing strength reached 12.8 kN/m,the compression permanent deformation was 55%.The obtained material had superior mechanical properties than ordinary silicone rubber,and had wide application in the field of sealing materials.
引文
[1]程青民,罗世凯,丁国芳.硅橡胶/丁基橡胶共混体系的相容性研究[J].化工新型材料,2010,38(7):109-111.
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[3]鲁学峰,郝智,罗筑,等.天然短纤维/橡胶复合材料研究进展[J].化工新型材料,2016,44(11):17-19.
[4]陈翔,肖风亮,袁维娜.芳纶浆粕对丁腈橡胶性能的影响[J].橡胶工业,2013,60(11):671-676.
[5]王涛,秦明林,刘静,等.多巴胺改性对位芳纶浆粕及其增强橡胶复合材料的性能研究[J].塑料工业,2016,44(3):151-156.
[6]肖改丽,韩卿.用LiCl/极性溶剂制备芳纶浆粕纤维溶液[J].中华纸业,2008(24):55-58.
[7] Zhao J.Effect of surface treatment on the structure and properties of para-aramid fibers by phosphoric acid[J].Fibers and Polymers,2013,14(1):59-64.
[8] Yang M,Cao K,Sui L,et al.Dispersions of aramid nanofibers:a new nanoscale building block[J].Acs Nano,2011,5(9):6945-6954.
[9] Cao K,Siepermann C P,Yang M,et al.Reactive aramid nanostructures as high-performance polymeric building blocks for advanced composites[J].Advanced Functional Materials,2013,23(16):2072-2080.
[10] Mansur H S,Sadahira C M,Souza A N,et al.FT-IR spectroscopy characterization of poly(vinyl alcohol)hydrogel with different hydrolysis degree and chemically crosslinked with glutaraldehyde[J].Materials Science&Engineering C,2008,28(4):539-548.
[11]夏忠林,罗筑,娄金分,等.芳纶纤维增强天然橡胶性能的研究[J].特种橡胶制品,2013,34(6):15-20.
[2] Abdelmouleh M,Boufi S,Belgacem M N,et al.Short naturalfibre reinforced polyethylene and natural rubber composites:effect of silane coupling agents and fibres loading[J].Composites Science&Technology,2007,67(7/8):1627-1639.
[3]鲁学峰,郝智,罗筑,等.天然短纤维/橡胶复合材料研究进展[J].化工新型材料,2016,44(11):17-19.
[4]陈翔,肖风亮,袁维娜.芳纶浆粕对丁腈橡胶性能的影响[J].橡胶工业,2013,60(11):671-676.
[5]王涛,秦明林,刘静,等.多巴胺改性对位芳纶浆粕及其增强橡胶复合材料的性能研究[J].塑料工业,2016,44(3):151-156.
[6]肖改丽,韩卿.用LiCl/极性溶剂制备芳纶浆粕纤维溶液[J].中华纸业,2008(24):55-58.
[7] Zhao J.Effect of surface treatment on the structure and properties of para-aramid fibers by phosphoric acid[J].Fibers and Polymers,2013,14(1):59-64.
[8] Yang M,Cao K,Sui L,et al.Dispersions of aramid nanofibers:a new nanoscale building block[J].Acs Nano,2011,5(9):6945-6954.
[9] Cao K,Siepermann C P,Yang M,et al.Reactive aramid nanostructures as high-performance polymeric building blocks for advanced composites[J].Advanced Functional Materials,2013,23(16):2072-2080.
[10] Mansur H S,Sadahira C M,Souza A N,et al.FT-IR spectroscopy characterization of poly(vinyl alcohol)hydrogel with different hydrolysis degree and chemically crosslinked with glutaraldehyde[J].Materials Science&Engineering C,2008,28(4):539-548.
[11]夏忠林,罗筑,娄金分,等.芳纶纤维增强天然橡胶性能的研究[J].特种橡胶制品,2013,34(6):15-20.