Abstract
In this paper, polyester polyol, toluene diisocyanate (TDI) and hydroxyethyl acrylate (HEA) were taken as the raw materials to synthesize polyurethane acrylate. UV curable organic silicon nano sol was synthesized by γ-methacryloxypropyltrime-thoxysilane. The UV curable polyurethane materials modified by organic silicon were prepared based on the UV curable organic silicon nano sol and synthesized polyurethane acrylate. This paper studies on the mechanical properties of organic silicon modified UV curable polyurethane materials and puts forward the micro model that inorganic phase is bonded to the resin in the form of chemical bonds. The results show that the heat resistance and mechanical properties of hybrid materials are improved with the increase of the nano silica sol’s contents , the abrasion resistance of hybrid coatings is also improved and the silica nano particles are well dispersed in the organic phase.
Highlights
UV curable technology is a method to form a curable coating and products by taking ultraviolet light as curing energy
Organic / inorganic hybrid material will have excellent performance because organic / inorganic hybrid material could combine the characteristics of high toughness, high elasticity, excellent machinability of the organic phase with the high hardness and high modulus performance of the inorganic phase
A certain amount of anhydrous ethanol, γmethacryloxypropyltrime-thoxysilane and 3.6 g of distilled water were put into three mouth flask equipped with a stirrer, a condenser pipe and a thermometer, drop in anhydrous ethanol and 4 ml of hydrochloric acid mixture, let the pH value of the solution become 2, and uniformly stir it at room temperature for 20 minutes, heat it up to 65 °C, react for two hours,cool the solution and add the trimethylchlorosilane which is called capping agent, react half an hour
Summary
UV curable technology is a method to form a curable coating and products by taking ultraviolet light as curing energy. UV curable technology has many advantages such as quickcuring, high-efficiency, energy saving, environmental protection, excellent performance of the cured product and so on. Organic / inorganic hybrid material will have excellent performance because organic / inorganic hybrid material could combine the characteristics of high toughness, high elasticity, excellent machinability of the organic phase with the high hardness and high modulus performance of the inorganic phase. It has become a research focus due to its obvious advantages in many aspects[3,4,5,6]
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