Study on Preparation and Properties of Phenolic Resin Toughened by Thermoplastic Resin

WANG Yu-xiang, ZHANG Chun-hui

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PDF(3148 KB)
Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (09) : 7-14. DOI: 10.15925/j.cnki.issn1005-3360.2024.09.002
Theory and Research

Study on Preparation and Properties of Phenolic Resin Toughened by Thermoplastic Resin

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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.

Key words

Phenolic resin / Modification by polyblending / Toughening modification / Mechanical properties / Thermal properties

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WANG Yu-xiang , ZHANG Chun-hui. Study on Preparation and Properties of Phenolic Resin Toughened by Thermoplastic Resin. Plastics Science and Technology. 2024, 52(09): 7-14 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.09.002

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