Study on a Solvent-Free PBA/CO-Based PU Adhesive for Aluminum-Plastics Compounding

Abstract:

In this paper, the polyurethane prepolymer (Component A) was synthesized with PBA, Castor oil, and IPDI as raw material. The structure and viscosity of PU prepolymer was characterized by IR spectra and rotary rheometer. The thermal performance, adhesion properties and water resistance of cured adhesive films were respectively determined by Thermogravimetric analysis (TG), T-style peel strength test, and water absorption test. The results showed that the addition of castor oil reduced the viscosity of prepolymer and greatly improved the water resistance of cured adhesive, but never affected the thermal performance of adhesive. Besides, castor oil was cheaper, easily obtained and more natural than other polyols. However, castor oil slightly decreased the adhesion strength of adhesive. So the amount of castor oil should be considered.

• Periodical: Advanced Materials Research (Volume 380)
• Pages: 294-297
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.380.294
• Online since: November 2011
• Authors: Jin Yan, Guang Xue Chen, Shuang Lian Chen, Da Qing Wu
• Keywords: Adhesive, Castor Oil, Polyurethane (PU), Solvent-Free, Two-Component

References

[1] DU Ying, MENG Fan-xue: Present Status and Research Progress on Polyurethane Laminating Adhesive, China Adhesives Vol.14, No.6 (2005).

[2] Bianca B.R. Silva, Ruth M.C. Santana: A Solventless Castor Oil-Based PU Adhesive for Wood and Foam Substrates. Int J Adhes Adhes Vol.30 (2010).

DOI: 10.1016/j.ijadhadh.2010.07.001

[3] Koji Nakanishi, P.H. Soloman: 100 Examples of In-frared Spectrum Analysis, Beijing: Science Press Vol. 10 (1984).

[4] Shanxi Institute of Chemical Industry: Castable Polyurethane Elastomers Manual. Beijing: Chemical Industry Press (2002).

[5] HU Xiao-yong, YUAN Xiao-li: Study on a Two-Component PU Adhesive Based on Solvent-Free, China Adhesives Vol.18, No.12 (2009).