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Licensed Unlicensed Requires Authentication Published by De Gruyter April 27, 2022

Influence of surface modification on thermal, adhesive properties and impact behavior of TPU films for laminated glass

Chenxing Zhang, Hongwu Wu, Liangfeng Xu and Mingyuan Ren


The poor adhesion of TPU films limits their extensive application in lightweight laminated glass (LLG). A simple and effective method is reported in this paper to obtain modified TPU films by silane coupling agent (SCA) treatment. The polar groups (such as urethane groups, carboxyl groups, etc.) on the surface of TPU films reacted chemically with the reactive groups of SCA. Meanwhile, hydrogen bonds were formed between the silicon hydroxyl groups generated by the hydrolysis of SCA. Therefore, the adhesivity and thermal stability of TPU films were improved. Moreover, the surface of TPU films became rough after modification, hence the interfacial bonding area between TPU film and glass increased, which furthered the bonding effect of TPU film with glass plate. Compared with unmodified TPU films, the tensile shear bond strength (TSBS) of modified TPU films increased by nearly 28%, and the initial decomposition temperature increased from 277 °C to a maximum of 295.3 °C. The impact resistance of LLG was significantly improved due to the improvement of the adhesivity of TPU film.

Corresponding author: Hongwu Wu, Key Laboratory of Polymer Processing Engineering, South China University of Technology, Ministry of Education, Guangzhou, P. R. China; National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, P. R. China; and Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology, Guangzhou, P. R. China, E-mail:


We acknowledge the support of this work by the National Key Research and Development Program ofChina (grant no. 2016YFB0302302), the Natural Science Foundations of China (51573213, 51303215).

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


Aguilar, J.O., Gomez-Daza, O., Brito, A., Nair, M.T.S., and Nair, P.K. (2004). Optical and mechanical characteristics of clear and solar control laminated glass using zinc sulphide and copper sulphide thin films. Surf. Coat. Technol. 200: 2559–2565, in Google Scholar

Allen, H.G. (1969). Analysis and design of structural sandwich panels. Oxford Publishers, Pergamon.Search in Google Scholar

Centelles, X., Pelayo, F., Lamela-Rey, M.J., Fernandez, A.I., Salgado-Pizarro, R., Castro, J.R., and Cabeza, L.F. (2021a). Viscoelastic char acterization of seven laminated glass interlayer materials from static tests. Constr. Build. Mater. 279: 122503, in Google Scholar

Centelles, X., Pelayo, F., Lopez, M.A., Castro, J.R., and Cabeza, L.F. (2021b). Long-term loading and recovery of a laminated glass slab with three different interlayers. Constr. Build. Mater. 287: 122991, in Google Scholar

Cutler, R.A. and Kleinlein, B. (2009). Effect of the hydroxyl content and molecular weight of polyvinyl butyral on tape properties. J. Eur. Ceram. Soc. 29: 3211–3218, in Google Scholar

Cooper, S.L. and Tobolsky, A.V. (1966). Properties of linear elastomeric polyurethanes. J. Appl. Polym. Sci. 10, 1837–1844, in Google Scholar

Van Ekeren, P.J. and Carton, E.P. (2011). Polyurethanes for potential use in transparent armour investigated using DSC and DMA. J. Therm. Anal. Calorim. 105: 591–598, in Google Scholar

Feldman, M., Kasper, R., Abeln, B., Cruz, P., Belis, J., Beyer, J., Colvin, J., Ensslen, F., Eliasova, M., Galuppi, L., et al.. (2014). Guidance for European structural design of glass components. Publications Office of the European Union, Luxembourg, no. 703795.Search in Google Scholar

Frick, A. and Rochman, A. (2004). Characterization of TPU-elastomers by thermal analysis (DSC). Polym. Test. 23: 413–417, in Google Scholar

Glowinska, E., Datta, J., Romero, J.F.R., Herrero, D.S., and Carmona, M. (2018). Novel cast polyetherurethanes based on dispersed polymeric polyols. Polym. Test. 68: 340–349, in Google Scholar

Gibson, P.E., Wallace, M.A., and Cooper, A.L. (1982). Development in block copolymer. Elsevier Publishers, London.Search in Google Scholar

Huang, X.K., Liu, G., Liu, Q., and Bennison, S.J. (2014). The flexural performance of laminated glass beams under elevated temperature. Struct. Eng. Mech. 52: 603–612, in Google Scholar

Herrera, M., Matuschek, G., and Kettrup, A. (2002). Thermal degradation of thermoplastic polyurethane elastomers (TPU) based on MDI. Polym. Degrad. Stab. 78: 323–331, in Google Scholar

Hossieny, N.J., Barzegari, M.R., Nofar, M., Mahmood, S.H., and Park, C.B. (2014). Crystallization of hard segment domains with the presence of butane for microcellular thermoplastic polyurethane foams. Polymer 55: 651–662, in Google Scholar

Huang, R.Z., Chari, P., Tseng, J.K., Zhang, G.J., Cox, M., and Maia, J.M. (2015). Microconfinement effect on gas barrier and mechanical properties of multilayer rigid/soft thermoplastic polyurethane films. J. Appl. Polym. Sci. 132: 41849, in Google Scholar

Kim, H. and Macosko, C.W. (2009). Processing-property relationships of polycarbonate/graphene composites. Polymer 50: 3797–3809, in Google Scholar

Koros, W.J., Paul, D.R., and Rocha, A.A. (1976). Carbon dioxide sorption and transport in polycarbonate. J. Polym. Sci. Part B: Polym. Phys. 14: 687–702, in Google Scholar

Lopez, A., Hoess, A., Thersleff, T., Ott, M., Engqvist, H., and Persson, C. (2011). Low-modulus PMMA bone cement modified with castor oil. Bio-Med. Mater. Eng. 21: 323–332, in Google Scholar PubMed

Lin, W. and Kramer, E.J. (1973). Small angle X-ray scattering from amorphous polycarbonate. J. Appl. Phys. 44: 4288–4292, in Google Scholar

Lee, C.S. (2014). U.S. Patent 8: 894–788.Search in Google Scholar

Lewandowski, K., Krepski, L.R., Mickus, D.E., Roberts, R.R., Heilmann, S.M., Larson, W.K., Purgett, M.D., Koecher, S.D., Johnson, S.A., McGurran, D.J., et al.. (2002). Synthesis and properties of waterborne self-crosslinkable sulfo-urethane silanol dispersions. J. Polym. Sci., Part A: Polym. Chem. 40: 3037–3045, in Google Scholar

Lai, S.M., Wang, C.K., and Shen, H.F. (2005). Properties and preparation of thermoplastic polyurethane/silica hybrid using sol-gel process. J. Appl. Polym. Sci. 97: 1316–1325, in Google Scholar

Neil, A.D., Tim, D., Christopher, W.M., and Matthew, T. (1992). Nonidealities exhibited by crosslinking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate. Macromolecules 25: 4490–4500, in Google Scholar

Osnes, K., Holmen, J.K., Grue, T., and Borvik, T. (2021). Perforation of laminated glass: an experimental and numerical study. Int. J. Impact. Eng. 156: 103922, in Google Scholar

Posavec, D., Dorsch, A., Bogner, U., Bernhardt, G., and Nagl, S. (2011). Polyvinyl butyral nanobeads: preparation, characterization, biocompatibility and cancer cell uptake. Microchim. Acta 173: 391–399, in Google Scholar

Peter, L., Harry, J.S., Loretta, P., Michael, S.W., and Walther, B. (1991). Structure of PMMA/EGDMA star-branched microgels. Macromolecules 24: 1306–1314, in Google Scholar

Pocius, A.V. (2012). Adhesion and adhesives technology. Hanser Publishers, London.10.3139/9783446431775Search in Google Scholar

Stepto, R.F.T., Cail, J.I., and Taylor, D.J.R. (2000). Polymer networks: principles of formation, structure and properties. Polimery 45: 455–464, in Google Scholar

Sun, X.D., Chiu, Y.Y., and Lee, L.J. (1997). Microgel formation in the free radical cross-linking copolymerization of methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDMA). Ind. Eng. Chem. Res. 36: 1343–1351, in Google Scholar

Shi, X.Y., Zhao, F., Zhai, J.X., and Zhao, S.G. (2008). SiO2 reinforced EVM/TPU blends: bound rubber and rheology behavior. J. Macromol. Sci., Phys. 47: 1211–1227, in Google Scholar

Wei, Z.Z., Wang, R., Wang, J.F., Yang, Y.Y., Liu, Y.K., Wang, W.J., and Cao, Y.X. (2020). Highly toughened PA6 using residue of plasticized PVB film via two-step reactive melt blending. Polymer 186: 122052, in Google Scholar

Wu, Z.F., Wang, H., Tian, X.Y., Cui, P., Ding, X., and Ye, X.Z. (2014). The effects of polydimethylsiloxane on transparent and hydrophobic waterborne polyurethane coatings containing polydimethylsiloxane. Phys. Chem. Chem. Phys. 16: 6787–6794, in Google Scholar PubMed

Zarzycki, J. (1991). Glasses and the vitreous state. Cambridge University Press, Cambridge.Search in Google Scholar

Received: 2021-12-24
Accepted: 2022-03-12
Published Online: 2022-04-27
Published in Print: 2022-07-26

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