Common knowledge of coating: element organic resin coating (4)

The key points are as follows: 2 The structure and characteristics of fluororesin synthetic raw materials: 1 Trifluorochloroethylene CF2 = cfcl 2 Alkyl vinyl ether: cyclohexyl vinyl ether, hydroxybutyl vinyl ether, ethyl vinyl ether, glycidyl vinyl ether, etc 3 Alkyl vinyl ester: carboxylic acid vinyl ester, including vinyl acetate, hexanoate, caprylic acid vinyl ester, neononanoate vinyl ester, caprylic acid vinyl ester, etc Synthesis example: Synthesis of trifluorochloroethylene alkyl vinyl ester resin &nda Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: 2 Structural characteristics of fluororesin synthetic materials: 1 Trifluorochloroethylene CF2 = cfcl 2 Alkyl vinyl ether: cyclohexyl vinyl ether, hydroxybutyl vinyl ether, ethyl vinyl ether, glycidyl vinyl ether, etc 3 Alkyl vinyl ester: carboxylic acid vinyl ester, including vinyl acetate, hexanoate, caprylic acid vinyl ester, neononanoate vinyl ester, caprylic acid vinyl ester, etc Synthesis example: synthesis of trifluorochloroethylene alkyl vinyl ester resin monomer: trifluorochloroethylene (CTFE), vinyl acetate (VAC), allyl alcohol, undecylic acid - solvent: xylene, methylisobutyl ketone, butyl acetate – initiator: azodiisobutyronitrile （1） The reason why fluorine-containing polymers have special properties different from other polymers is that fluorine atoms are introduced into the polymers The properties of fluorine-containing polymers are closely related to the properties of fluorine atoms It is further proved that the more fluorine atoms contained in organic compounds, the shorter the bond length of C-F, and the greater the bond energy For example, the C-F bond length of CH3F is 1.42 μ m, the corresponding C-F bond energy is 389.3kj/mol, while the C-F bond length of perfluoroalkane CF4 is 1.36 μ m, and the corresponding bond energy is 543.6kj/mol The bond energy of the latter is much larger than that of the former, and the chemical stability of the fluoropolymer is higher With the increase of fluorine atom, the bond length of the corresponding C-C bond will be shortened For example, the bond length of C-C bond in perfluoroethylene molecule is 1.47 Å, shorter than that of C-C bond in general hydrocarbon molecule, so the bond energy is also increased For the understanding of the super weatherability of FEVE fluorocarbon resin, the following analysis can be made: 2 The outstanding salt fog resistance of lumiflon room temperature curing fluorocarbon finish can be up to 3000 hours without blistering and falling off; 1 The film of 2500 hours salt fog resistance test of aircraft skin paint developed by a paint company in China has basically no change The "white fluorocarbon lustrous enamel" developed by sanaifu Zhonghao chemical new material Co., Ltd has been tested by the national quality inspection center of China, and the sample plate has been tested by neutral salt spray for 5016 hours, and the paint film has no change, so it is rated as grade I It is not difficult to see that FEVE fluorocarbon coating has excellent corrosion resistance 3 Good anti fouling and self-cleaning performance l hard coating, low surface energy (23x107j) l smooth feel of coating, low friction coefficient l good self-cleaning performance It has unique value for urban sanitation and beautification Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,