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In this paper, a method of solution polymerization, the preparation of tetrafluoroethylene, ethylene, and a novel fluorine-containing copolymer containing a small amount of a third monomer. A solid nuclear magnetic resonance (13C-NMR) and differential scanning calorimetry (DSC), such as the main analysis means, using Fourier transform infrared (FTIR), and were characterized in the polymer structure. Trifluoropropene (TFP) as the third monomer in the 1,1,2 - trichloro-1 ,2,2 - trifluoroethane (R113), an organic solvent, the synthesis of tetrafluoro-ethylene (TFE), ethylene (E) and trifluoroacetic propylene terpolymer. Study the polymerization kinetics at 65 ℃, polymerization kinetics data; respectively polymerization temperature, the amount of initiator, monomer ratio, the third monomer content, and monomer concentration on the reaction was studied; according to The Arrhenius equation is the apparent activation energy of the reaction of tetrafluoroethylene, ethylene and trifluoroethylene propylene solution polymerization. Both the structure and properties of the ternary copolymer of tetrafluoroethylene, ethylene and trifluoropropene study were investigated the third monomer is added in an amount of the melting point of the terpolymer, thermal decomposition temperature, melt index, crystal morphology and solvent resistance and other properties. Results show that the increase in the added amount of the trifluoropropene, rendered decreased melting point Tm of the resulting product, which is conducive to improve the processing performance, while its initial decomposition temperature Tdi not change significantly, remained at 340 ° C -350 ° C. described between the terpolymer still having a good heat resistance. Copolymer melt index test, you can achieve a polymer melt index 4.3-115g/10min between arbitrary regulation. While by the composition changes in the structure of the crystal morphology of the P (TFE-co-E-co-TFP) copolymer and the existence of a significant effect, TFP added to the regularity of the polymer chains decreased, resulting in a decline in the degree of crystallinity, the polymerization the crystalline structure of spherulite structure by obvious changes for a small amount of the microcrystalline structure. The thermal properties and a solvent of the copolymer test experiments show that the terpolymer remain the excellent heat resistance and solvent resistance. This article also with hexafluoropropylene (HFP) as a comonomer, to prepare a terpolymer of tetrafluoroethylene, ethylene and hexafluoropropylene. Its polymerization kinetics, respectively, on the polymerization temperature, the amount of initiator, monomer ratio on the reaction were studied. P (TFE-co-E-co-HFP) copolymer melt film, the polymer film was measured contact angle of the surface of the water and ethylene glycol, and its surface energy is calculated according to the surface contact angle. At room temperature and under high temperature conditions, the solvent resistance of the copolymer obtained P (TFE-co-E-co-HFP) copolymers have good solvent properties. The polymerization reaction of the organic solvent than water and can effectively reduce the reaction pressure and to improve the safety of the experiment; simultaneously were selected organic solvent is 1,1,2 - trichloro-1 ,2,2 - trifluoroethane (R113) and 1 - fluoro-2 - chloro-methane (R21), respectively, as a solution polymerization reaction medium to examine the influence of the solvent on the polymerization reaction, and to obtain a effective method to control the polymer melt index i.e. R113 and R21 are a mixed solvent of a certain proportion. The copolymerization reaction was conducted using the radical of a chain transfer to the solvent to the purpose of the regulation of the molecular weight of the polymer.
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