Developing a polymer-based crack repairing material using interpenetrate polymer network (IPN) technology

Wu, Hao; Zhu, Meijia; Liu, Zhuo; Yin, Jian

doi:10.1016/j.conbuildmat.2015.03.067

Cited by 32 publications

(10 citation statements)

References 29 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, PU adhesive is a rapidly developing part of PU resins, which have excellent shear strength and impact resistance. Its applications are expanding because of its excellent adhesion properties and adaptability to a variety of substrates . However, still a challenge is the fact that PU's bonding is achieved in the presence of water; this results from the presence of interstitial water and the decomposition of PU's matrix by the permeation of water molecules .…”

Section: Introductionmentioning

confidence: 99%

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Xie

Liu

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyurethane (PU) has been widely used as a glue in various areas. However, adhesion in the presence of water is greatly impeded and results in most synthetic adhesive failure. In this study, we designed and synthesized a novel PU construction; underwater PU adhesives were created by the incorporation of synthetic glycerol monomethacrylate (GMA). Furthermore, the urethane structure helped the adhesive eliminate the interfacial water barrier through interactions that were stronger than hydrogen bonding, and GMA as a crosslinking agent was used to generate post-covalent-crosslinking networks through radical polymerization. This enhanced the cohesion so the diffusion of water molecules could be overcome. Fourier transform infrared spectroscopy, thermogravimetric analysis, underwater adhesion measurements, and tensile tests were used to characterize the chemical and mechanical properties of the as-obtained adhesive. This led to an adhesive with a better mechanical strength and interfacial adhesion in water, and the results show that the mechanical properties (tensile strength, Young's modulus, and tensile elongation) of the GMA-PU adhesive were higher than those of the pure PU. As for the 4% GMA, the tensile strength was enhanced by 24.3% and the elongation was enhanced by 125.23% over those of the pure PU. This confirmed that the incorporation of GMA into the PU matrix indeed induced increasing cohesion, and the sample's adhesive strength was 21.19 6 3.9 MPa; this indicated a superior adhesive strength over that of the pure PU. In addition, we can foresee that underwater adhesion will play an important role in prospective surgery and engineering areas. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46579.

show abstract

Section: Introductionmentioning

confidence: 99%

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Xie

Liu

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Grouting materials mainly include inorganic materials (clay [13,14], water glass [15], cement [16][17][18][19][20][21][22], etc. ), organic materials (polyurethane [23,24], phenolic resin, epoxy resin [25][26][27][28], etc. ), and composite materials (polymer/cement [29][30][31], epoxy resin/cement, polyurethane/water glass [32,33], etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of Foaming and Drainage Behavior on Structure and Properties of Polyurethane/Water Glass (PU/WG) Grouting Materials for Coal Mines

Liu

Wang

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

During the grouting operation in the underground coal mine, abnormal curing behaviors such as foaming and drainage often lead to the loss of reinforcement effect of the polyurethane/water glass (PU/WG) materials on coal walls and even cause safety accidents. Herein, three kinds of PU/WG grouting materials were successfully prepared by changing the type of catalysts, which were the normal sample (C7), the foaming sample (C14), and the sample with drainage (C17) during curing. The structure, thermal stability, and compressive strength of the three samples were characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetry-differential thermal analysis (TG-DTA), and pressure testing machine. The results showed that the abnormal curing behavior had little effect on the thermal stability of the material, but it had a significant effect on the microstructure and compressive strength of the consolidated body. C7 exhibited a typical three-phase distribution, in which the polysilicate microspheres encapsulated by acicular carbonate were embedded in the polymer continuum. The structure of C7 had high rigidity and hardness, and the compressive strength was up to 43 MPa. The three-phase structure of C14 disappeared gradually with the increase of catalyst content, the hard block material and matrix are porous, and the compressive strength was only 2.7 MPa. The organic polymer of C17 existed in the form of microsphere and distributed irregularly in the continuum composed of inorganic components, and the compressive strength was 4.9 MPa. The abnormal solidification behavior such as foaming and drainage made the water glass/polyurethane material lose its basic mechanical properties, which cannot meet the needs of grouting reinforcement in coal mines. Therefore, the type of catalyst had a significant impact on the stability of the system, and it is necessary to avoid selecting catalysts that are likely to cause abnormal solidification during formulation research.

show abstract

“…Polyurethane has good compatibility with other kinds of polymers, and these can react independently with each other. Therefore, polyurethane-modified epoxy resin has an obvious toughening effect [18,19,20,21,22,23]. There are still shortcomings in the existing methods.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Toluene-Diisocyanate-Trimer-Modified Epoxy Resin

Zhang

Qiao

et al. 2019

Polymers

View full text Add to dashboard Cite

In this paper, a novel modified epoxy resin with an interpenetrating network structure for use as a grouting material with high toughness was prepared by a method of graft copolymerization between polyurethane prepolymer (PUP) trimer and epoxy resin (E-44). Polyurethane prepolymer was synthesized using poly(propylene glycol) (PPG) and 2,4-toluene diisocyanate trimer (TDIT) at 70 °C for 3 h. The graft copolymer was prepared by grafting polyurethane prepolymer onto the side chain of epoxy resin at 110 °C. The mechanical properties, fracture surface morphology, chemical structure, thermal properties, and corrosion resistance of the modified epoxy resin curing products were studied. Due to the beneficial flexible segments and the interpenetrating network structure, the results show that when the ratio of epoxy resin to polyurethane prepolymer is 10:2, the optimum mechanical properties are obtained; these include a compressive resistance of 184.8 MPa, impact property of 76.6 kJ/m2, and elongation at break of 31.5%. At the same time, the modified epoxy resin curing product also has excellent heat and corrosion resistance. This work provides a new method for the study of epoxy resins with high performance.

show abstract

Developing a polymer-based crack repairing material using interpenetrate polymer network (IPN) technology

Cited by 32 publications

References 29 publications

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Effects of Foaming and Drainage Behavior on Structure and Properties of Polyurethane/Water Glass (PU/WG) Grouting Materials for Coal Mines

Preparation and Properties of Toluene-Diisocyanate-Trimer-Modified Epoxy Resin

Contact Info

Product

Resources

About