title: Preparation of high thermal stability polysulfone microcapsules containing lubricant oil and its tribological properties of epoxy composites.
abstract: Polysulfone (PSF) microcapsules containing lubricant oil have been successfully prepared using solvent evaporation method. The results show that lubricant oil was successfully encapsulated and the encapsulation capacity of about 56.0 wt.% was achieved. The uniform microcapsules have nearly spherical shape and quite smooth outer surface. The mean diameter is approximately 156 and 169 μm by using different dispersant solutions. The wall material is porous in structure with wall thickness of about 20 μm. The initial decomposition temperature of PSF is 480 °C. It is higher than traditional poly(urea-formaldehyde) (PUF) and poly(melamine-formaldehyde) (PMF) wall materials with 245 °C and 260 °C initial decomposition temperature, respectively. High thermal stability of PSF microcapsules can be considered as additives in high temperature resistant polymer materials. The frictional coefficient and wear rate of epoxy composites decreased significantly by incorporating microcapsules containing lubricant oil into epoxy. When the concentration of microcapsules was 25 wt.%, the frictional coefficient and specific wear rate were reduced by 2.3 and 18.3 times, respectively, as compared to the neat epoxy.
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Li
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Wang
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Meiling
authors.initials: M
authors.lastname: Li
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Yexiang
authors.initials: Y
authors.lastname: Cui
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Yanji
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Baohui
authors.initials: B
authors.lastname: Wang
authors.affiliation: a Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering , Northeast Petroleum University , Daqing , PR China.
authors.forename: Huaiyuan
authors.initials: H
authors.lastname: Wang
mesh_terms: D002214:Capsules / Q000737:chemistry*; D004339:Drug Compounding; D004852:Epoxy Compounds / Q000737:chemistry; D017276:Friction; D006358:Hot Temperature; D054327:Lubricants / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*
chemical_list: D002214:Capsules; D004852:Epoxy Compounds; D054327:Lubricants; D011108:Polymers; D013450:Sulfones; C017662:polysulfone P 1700
keywords: PSF microcapsules; high thermal stability; lubricant oil; self-lubricating epoxy composites; tribological properties