Study on Synthesis of Block Copolymerized Polyurethane/Epoxy Resin Waterborne Resins

DENG Jianru, JIANG Weizkeng, LIU Fangbo, YU Fangyuan

Abstract

Polyurethane prepolymers were synthesized from poly (caprolactone) diol (PCL-2000) and isophorone diisocyanate(IPDI). With a chain extension polymerization of polyurethane prepolymers, piperazine and epoxy resin E-44, and by controlling the material ratio of copolymers to adjust the molecular weight and flexibility of synthetic resin,a series of linear multi-block macromolecular resin can be made. With its neutralization hydration effect, new cationic waterborne resin can be obtained. The design idea of the experiment was introduced in detail. The effect of material ratio on the resin structure parameters, properties of waterborne resins and cured products was explored. The results show that the molecular weight of synthetic resin and the particle size of waterborne resins can be controlled by adjusting the material ratio. The tensile strength, elongation at break, Tg of cured product can be adjusted from 10.46 MPa to 22.14 MPa,629% to 190% and 24.1 ℃ to 44.7 ℃,respectively.

 

 

Keywords: polyurethane,  epoxy resins,  waterborne resins,  polymeric materials,  structure and property


Full Text:

PDF


References


KONG J, TANG Y, ZHANG X, et al. Synergic effect of acrylate liquid rubber and bisphenol a on toughness of epoxy resins[J]. Polymer Bulletin, 2008, 60 (2/3):229—236.

THOMAS R, DURIX S, SINTUREL C, et al. Cure kinetics, morphology and miscibility of modified DGEBA–based epoxy resin effects of a liquid rubber inclusion [J]. Polymer, 2007, 48(6): 1695—1710.

WANG Y J, LIU J, YANG J J, et al. Progress in research and application of epoxy adhesive modified by polyurethane [J]. Chemistry & Adhesion, 2008 (5):54—57 (In Chinese)

LIN M S, WANG M W, CHENG L A. Stabilization's of an epoxy resin by forming interpenetrating polymer networks with bisphenol– A diacrylate [J]. Polymer Degradation & Stability, 1999, 66(3): 343—347.

WANG X, HU J, LI Y,et al. The surface properties and corrosion resistance of fluorinated polyurethane coatings [J]. Journal of Fluorine Chemistry, 2015, 176:14—19.

BU X Q, BEI X L, QIU S J. The study on synthesis technology and properties of water–borne polyurethane modified by epoxy resin[J]. Journal of Basis Science & Engineering, 2006, 14(2):153—159. (In Chinese)

HAO X B, ZHANG X D, TAN Y X, et al. Development of polyurethane –epoxy resin composite emulsion [J]. Polyurethane Industry, 2009, 24(1):1—5. (In Chinese)

YANG W P, LI B, LU M, et al. Synthesis and characterization of waterborne polyurethane modified with epoxy resin which was ring– opened by lactic asid [J]. Paint & Coatings Industry,2011,41(4): 22—25,30. (In Chinese)

BANG J Y,HUANG Y P,TAO C,et al. Study on synthesis and properties of waterborne polyurethane modified with ring –opened epoxy resin by diethanolamine [J]. Paint & Coatings Industry, 2014, 44(2):32—38. (In Chinese)

ZHANG X L, LI Z, DENG J R. Precision synthesis method of neutral polymeric bonding agent [J]. Journal of Solid Rochet Technology, 2013, 36(3):368—370, 375.

CHEN L, DENG J R, XU B, et al. Synthesis of N –(2–Cathyleen) diethylaminoethyl [J]. Petrochemical Technology, 2007(10):1029—1032. (In Chinese)


Refbacks

  • There are currently no refbacks.