The Research On The Glass Fiber Reinforced Plastic With Low Surface Tension

This article is based on the surface and interfacial investigation of the FRP. Investigateand synthesize a new active material (3-(1H, 1H, 5H-Octafluoropentyloxy)-1, 2-Propenoxide)that can apply to the glass fiber reinforced epoxy resin. The influence of reactive time andtemperature is investigated. And we also modify the surface of the glass fiber reinforcedunsaturated polyester with the G-02 and G-04. It reacts with the material's surface layer whenthe Composite solidifies. It gets a lower critical surface tension, high contact angle. Theproperty of waterproof and oilproof has improved. The main conclusions list below:1. 3-(1H, 1H, 5H-Octafluoropentyloxy)-1, 2-Propenoxide is synthesized by OFP(2, 2, 3, 3, 4, 4, 5, 5-Octafluoro-1-pentanol) and epichlorohydrin, toluene as solvent, and sodium hydroxideas the catalyst. The product is of high purity, and it has relatively low surface tension. Thebest reactive condition is that the temperature is 70℃and the reactive time is about 4 hours, and the Moore rate of OFP(n1): epichlorohydrin(n2): sodium hydroxide(n3) is 1: 2: 1.1.2. It is found that the contact angle of glass fiber reinforced unsaturated polyesterfluoridized by G-02 has increased from 49.3°to 74.7°, and the surface tension has reducedfrom 35.9 mN/m to 25.9mN/m accordingly. The contact angle of glass fiber reinforcedunsaturated polyester fluoridized by G-04 has increased from 49.3°to 79.7°, and the surfacetension has reduced from 35.9 mN/m to 24.5mN/m accordingly. The contact angle of glassfiber epoxy resin fluoridized by 3-(1H, 1H, 5H-Octafluoropentyloxy)-1, 2-Propenoxide hasincreased from 51.3°to 75.3°, and the surface tension has reduced from 36.5mN/m to25.5mN/m accordingly. It achieves a certain extent effect of waterproof and oilproof.3. Test the change of surface ingredient before and after the fluoridized of the FRP usingthe reflecting method of infrared spectrum. Then dip the fluoridized FRP in the cold water, warm water and petroleum ether for about half an hour, and surface ingredient haven't changed too much. Analyses the exterior element of the FRP using the XPS. Test the fullspectrum, the carbon subtle spectrum and fluorine subtle spectrum. Validate that the fluorinehas combined in the surface of the FRP, and then assess the thickness of fluorine using thehydronium etching technology.4. It is found that compared with the untreated glass fiber reinforced unsaturated polyester, the fluoridized FRP's property of anti-water and anti infirm-acid has enhanced, while theproperty of anti- strong acid, anti-strong alkali and anti-organic solvent hasn't changed much.The property of anti-acid and anti-alkali of the glass fiber reinforced epoxy resin fluoridizedby 3-(1H, 1H, 5H-Octafluoropentyloxy)-1, 2-Propenoxide has a corresponding increase, but theproperty of anti-organic solvent hasn't changed much.5. Mold the FRP by replacing the mold releasing agent with the fluoride. Test the T peelingstrength and compare it with the PVA and the olefin as the mold releasing agent. The effect ofthe fluoride as the mold releasing agent is not as good as the PVA and the olefin.