Synthesis And Applications Of Fluorine-containing Demoulding Agent

Introduced several new types of fluoride, the preparation of silicon release agent, that is, silicone release agents, fluorinated alkyl modified silicone release agent, mold release agents and low-molecular-weight organic fluorine fluoropolymer off Die agent, release agent applications and an overview of the current situation.Degree of polymerization of 2-3 in the fluorine-containing olefin oligomers synthesized sodium perfluoroalkyl carboxylic acid (PFSA), the whole of sodium fluoride (PFPA), perfluoroalkyl sulfonate (PFS) and perfluorinated polyethylene ether compounds (PFN) four fluorine surfactant and a fluorine-containing monomer, by IR, elemental analysis and identified by chromatographic analysis of synthetic compounds. Determination of four fluorine surfactant surface tension, 0.1% of fluorine surfactant in the surface tension 25mN / m less than the general carbon hydrocarbon chain surfactant surface tension 35mN / m. Ethanol recrystallization method using a high-salt refining PFS surfactant, salt content reduced to 1.54 percent from 0.34 percent.GU-2080 Analysis of Daikin water-based release agent formula. In contrast to the use of prepared wax emulsion, silicone oil and fluorine latex emulsion, the emulsifier study focused on the type, composition and temperature on the emulsifying properties of emulsion. Determination of the three water-based emulsion dispersion stability, storage stability, dilution stability, the centrifugal stability and size distribution of emulsion. Prepare the water-based emulsion stability, particle size in the 0.1-1 urn, uniform particle size distribution, basic grasp of the wax, silicon and fluorine of three methods of water-based emulsion.The establishment of a release agent, laboratory testing, evaluation of methods to study the fluorine surfactants, emulsifying wax, silicone oil emulsion, PVA and additives Demoulding GOL, such as the type and concentration on the effect of release. Market adoption and use of silicone release agent and Japan, Daikin GU-2080 Demoulding fluoride release agent application of the contrast, the use of dilution of the proportion of release agent, mold release properties and surface tension between the release agent relationship. Applicable to selected Molded LDPE foam formula is superior to the fluoride release agent emulsion silicone release agent, mold release properties of the part release agent approach or exceed the fluoride release agent GU-2080. Release agent at the scene after a number of clients and evaluation of the use of, JH38-5-4, JH38-5-5A and JH28, respectively, release agent for LDPE high-and low-foam, fiber and silicon rubber wooden doors Demoulding effective, performance over the factory of the release agent being used.