塑料科技2024，Vol.52Issue(9)：7-14,8.DOI:10.15925/j.cnki.issn1005-3360.2024.09.002
热塑性树脂增韧改性酚醛树脂的制备及其性能研究
Study on Preparation and Properties of Phenolic Resin Toughened by Thermoplastic Resin
摘要
Abstract
With the continuous improvement of resin performance requirements in the field of friction materials,the toughness requirements of phenolic resin are getting higher and higher.In this study,three thermoplastic resins containing polyamide(PA),liquid nitrile rubber(LNBR),and liquid carboxyl nitrile rubber(CLNBR)were used to toughen and modify phenolic resin(PF),and cured samples with different thermoplastic resin/PF ratios were prepared.The thermal and mechanical properties of the composite resin were evaluated.The toughening effects of three thermoplastic resins on PF were compared and analyzed.The results show that when thermoplastic resin is added to PF,the compression rate and deformation rate increase,and the compressive elastic modulus,storage modulus,hardness and thermal decomposition temperature decrease.PA and PF have better compatibility.When the mass ratio of PA/PF is 1∶10,the composite resin has the best thermal stability and toughening effect.The crosslinking density is 18 251 mol/m3,the glass transition temperature is 199.4℃,the hardness is 123.12 HRR,the compressive elastic modulus is 1 953 MPa,the compression resilience is good,and the permanent deformation rate is low.关键词
酚醛树脂/共混改性/增韧改性/力学性能/热学性能Key words
Phenolic resin/Modification by polyblending/Toughening modification/Mechanical properties/Thermal properties分类
化学化工引用本文复制引用
王宇翔,张春辉..热塑性树脂增韧改性酚醛树脂的制备及其性能研究[J].塑料科技,2024,52(9):7-14,8.基金项目
企业横向"高性能湿式纸基摩擦材料基纸"(D8216860) （D8216860）
