Preparation of organosilicone modified polyurethane and its effect on the physical properties of organic-inorganic glass laminates [有机硅改性聚氨酯的制备及其对有机-无机层合玻璃性能的影响]

作者：Li Y.; Lu J.^*; Zhong F.

来源：Journal of Aeronautical Materials, 2021, 41(1): 60-66.

DOI：10.11868/j.issn.1005-5053.2020.000005

• Glass laminate
• Interfacial adhesion property
• Optical property
• Organosilicone
• Polyurethane

In this paper, organosilicone-modified polyurethane was synthesized by the prepolymerization method by using polypropylene glycol and isophorone diisocyanate as the synthetic monomers, and γ-aminopropyltriethoxysilane (KH550) as the silicone source. The modified polyurethane was used as the interlayer to prepare the organic-inorganic glass laminates. The effects of silicone contents on the optical properties, thermomechanical properties, and interfacial adhesion property of the glass laminates were investigated. With the KH550 content increasing, the polymerization degree of polyurethane is decreased, resulting in lower transparency, higher haze and lower surface hardness. The storage modulus of the modified polyurethane is increased at first and then decreased, and the glass transition temperature of hard segments is firstly increased and then decreased. Both reached the maximum value when the additive amount of KH550 is 1%. Using polyurethane adhesive layer as the interlayer of glass laminates, the interfacial shear strength of the unmodified glass laminates is 6.7 MPa, while the interfacial shear strength of glass laminates containing 0.5% KH550 is 7.7 MPa.

• 单位
  南昌航空大学