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What are the properties of vinyl ester resin ?

Feb 15, 2019

The typical use of vinyl ester resin can cover almost all industrial fields and is used under various media, environment and working conditions. It is especially used for anti-corrosion treatment and has many unique technologies.


First, the application and classification of vinyl resin


(1) Classification of objects treated with vinyl ester resin for corrosion resistance


1) Corrosion resistant FRP - pipes, tanks, various drug tanks, chimneys, scrubbers;


2) Corrosion resistant FRP lining - fan, various medicine tanks, chimneys, ventilation pipes;


3) Coating - smoke desulfurization device, offshore buildings, various drug tanks, chimneys, ventilation pipes;


4) Concrete tank lining - factory pits, electrolytic tanks, sewage tanks, etc.;


5) Electrical dust collector plate;


6) Blades, angles, etc. of the separator (using pultrusion);


7) used as a binder to make an explosion-proof insulating tape for a television picture tube;


8) TV parts;


9) Gel coat for mold;


10) Printing ink, offset printing (curing with light).


(2) According to the chemical medium of contact, it is often used for anti-corrosion treatment in harsh environments, such as:


1) a storage tank of 35% hydrochloric acid;


2) hydrochloric acid: water = 1:5; sodium hydroxide: water: 1:5 alternates with each other, using a glass-steel storage tank with a temperature of 60-70 ° C;


3) 40% hydrochloric acid, using a temperature of 60 ° C, the lining of the concrete tank;


4) 7% sulfuric acid, chlorine content 0.05% ~ 0.1%, pyrimidine 10 ~ 40g / L, a small amount of nitric acid, the use of temperature 60 ~ 75 ° C, gas-liquid contact tower;


5) 50% sulfuric acid + aluminum hydroxide, the highest operating temperature of 120 ° C sulfuric acid production equipment;


6) FRP storage tank of 72% sulfuric acid (3m3, 6m3):


7) 62% to 63% sulfuric acid, 20% sodium hydroxide, the maximum use temperature of 90 ° C neutralization reactor;


8) mixed acid FRP storage tank of 5% sulfuric acid, 4% hydrochloric acid, 5% hydrofluoric acid and 1% nitric acid, the use temperature is 40 ° C;


9) FRP storage tank of 48% sodium hydroxide;


10) 45% sodium hydroxide, the lining of the concrete tank with a maximum temperature of 80 ° C;


11) Ammonia gas 0.003% to 0.16%, hydrogen sulfide (2 to 4) × 10-6%, methyl mercaptan, methyl sulfide and other exhaust devices with a maximum operating temperature of 80 °C.


12) a normal temperature storage tank of 75% sulfuric acid and water mixed acid;


13) 30% sulfuric acid, 57% sodium chloride, using a comprehensive device with a temperature of 85 ° C;


(3) The vinyl ester resin can be used in combination with other materials, or can be made into a different finished product from a vinyl ester resin, and used in combination. The most widely used method in vinyl ester resins is that he can be used not only alone, but also with other thermosetting resins. Experts from the China Epoxy Resin Industry Association said that brominated phenolic vinyl resins can improve the flame retardancy of resins, while at the same time have corrosion resistance and aging resistance to organic solvents. It has been used in the production of uranium from crude phosphoric acid and copper tailings. It can also be used as a high temperature resistant pipeline and chimney of power plants and refrigeration plants due to its high heat aging resistance. When temperature, medium, pressure and other conditions are superimposed, the material selection must be cautious.

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