Outdoor paint crosslinking agent

Outdoor paint crosslinking agent

Organic fluorine and silicone resin are two kinds of high polymer materials that have developed rapidly in recent years, which represent the direction of resin development. Since high fluorine atom electronegativity and atomic radius and large chemical bonds can (486 kj/mol), so the fluoropolymer weather resistance, chemical resistance, stain resistance and other excellent character, used for outdoor paint get rapid development.

However, the heat resistance of fluorine resin is not ideal and needs to be improved. Organic silicon resin in Si - O keys are more likely to (451 kJ/mol), the film also has excellent heat resistance, cold, damp proof, weather resistance, contamination resistance and resistance to chemical corrosion performance, organic silicon polymer is earlier to get the actual application of organic polymer compound, application field is very wide.

However, the film performance of silicone resin is poor, the curing temperature is higher, and the adhesion of the substrate is poor. Fluorine and silicon organically unifies in together, play their respective advantages, developed the excellent comprehensive properties of new materials, has become a hotspot in new materials issue.

Ningxia university room jung, such use vinyl triethoxy silane and 5% 2% of the fluorinated alkyl methacrylate and butyl acrylate copolymer, the emulsion system has excellent hydrophobic and adhesion, used for exterior wall coating has both good anti-fouling self-cleaning function, and has a high weather resistance.

Xiao-dong zhou reports the Qingdao university of science and technology with N - hydroxyethyl perfluorinated symplectic amide acrylate and methyl methacrylate (mma), ethyl acrylate and butyl acrylate copolymer monomer copolymerization income add 2% ~ 8% single silane coupling agent KH - 570, of organic silicone modified fluorinated acrylate copolymer film cured at 80 ℃ for 2 h, water resistance, good alkali resistance, solvent resistance and stain resistance were increased.




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).


Shanghai university man towers with fluorine silicone and non fluorine resin blend modification, the introduction of nano sol, were allotted by the principle of gradient across layer layer coating research. It has improved the ability of waterproof, anti-fouling, weathering, aging, etc., and has more than 10,000 washing brush and over 1 400 h.

Liaoning institute of fluorine material had three fluoride vinyl chloride is developed with the fluorine monomer of thermoplastic type fluorine resin coating, coating performance is very good, but the heat resistance and solvent resistance as crosslinking type fluorine resin coating, application scope is limited. In order to improve these performance, an organic silicon modification experiment was carried out. The preliminary results of this study will be reported.

Preparation of fluorine silicone resin. A, B, C, D to functional monomer, vinyl siloxane monomer, mixed solvent, and the initiator T21 added to 500 mL pressure kettle (FYX - 015 type), stir well after vacuum suction three fluoride vinyl chloride (CTFE), heat (72 + 2) ℃, 16 h reaction; I'm going to add 1 g initiator and a little bit of solvent, reaction 4. To rise to 80 ℃ 4 h reaction, filter the material down to room temperature.

The preparation of white paint. Use the ST j-400 sand to disperse, add the appearance filler, the auxiliary and the resin and so on to the mixing cylinder and the mixing machine to stir well.

In this paper, we have made three kinds of fluorosilicone resin with different levels of vinyl siloxane, and the amount of raw materials and the solid content are shown in table 1. Fluorosilicone - 1 viscosity is too large to reduce viscosity and adjust the solvent. Fluorine and silicone - 2 joined the butyl acetate, adjust the dose of heavy aromatic hydrocarbon solvent (S - 150), the results of viscosity (tu - 4 cups) by the 302 S to 196 S, but also slightly lower solid content.

Fluorine silicone - 3 did not change the solvent, reduce the dosage of monomer B and C, increase proportion of vinyl triethoxy silane, results show that the solid content and fluorine silicone - 2 close, viscosity is smaller. To make the coating, add the solvent to reduce viscosity.

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Diethyl toluene diamine(DETDA)  http://www.yaruichem.com