Fireproof epoxy coating for steel structure
A technology for epoxy coatings and steel structures, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve problems such as poor adhesion of paint films, loss of fire resistance, and decline in fire resistance, achieving low cost and high productivity. The effect of high and high flame retardant efficiency
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Embodiment 1
[0040](1) Preparation of carboxyl chlorinated paraffin 42: Take 20 g of chlorinated paraffin 42 in 200 ml of acetone, 20 g of hydroxybenzoic acid and 30 g of potassium carbonate were added, and 55 ° C was reacted under nitrogen gas. After completion of the reaction, the pH of 3.0 was adjusted with hydrochloric acid, then extracted with ethanol, and the product was dried in vacuo at 100 ° C for 5 h to give the carboxyl chloride 42.
[0041](2) Preparation of chloride-containing chlorinated paraffin 42: 70 mol of carboxyl-containing chlorinated paraffin 42 is added to the reactor, and 120 mol of sulfoxide is added dropwise. .
[0042](3) Preparation of bromochlorinated wax 42 in the hydroxy-blocking: 100 mol of dibromophylinol and an appropriate amount of bindic acid anhydrous triethylamine, and nitrogen in the reactor, adding nitrogen at 0 ° C. The dichloromethane solution containing 101 mol chloride-containing chlorinated chlorinated wax 42 was added dropwise, and the reaction was reacted...
Embodiment 2
[0049](1) Preparation of carboxyl chlorinated paraffin 52: Take 20 g of chlorinated paraffin 52 to dissolve in 200 ml of acetone, and 20 g of hydroxybenzoic acid and 30 g of potassium carbonate were stirred, and at 80 ° C for 10 h under nitrogen. After completion of the reaction, pH to 3.0 was adjusted with hydrochloric acid, then extracted with ethanol, and the product was dried in vacuo at 100 ° C to give a carboxyl chlorinated paraffin 52.
[0050](2) Preparation of chloride-containing chlorinated paraffin 52: 70 mol of carboxyl-containing chlorinated chlorinated paraffin 52 is added to the reactor, and 120 mol of sulfoxide is added dropwise. .
[0051](3) Preparation of bromochlorinated paraffin 52 of the hydroxy-blocking: 100 mol of dibromophylinol and an appropriate amount of hydrolyzine anhydrous triethylamine were added to the reaction kettle, and nitrogen gas was transferred in the reaction kettle, and added at 0 ° C. The dichloromethane solution containing 102 mol chloride-conta...
Embodiment 3
[0058](1) Preparation of carboxyl chlorinated paraffin 70: Take 20 g of chlorinated paraffin 52 to dissolve in 200 ml of acetone, 20 g of hydroxybenzoic acid and 30 g of potassium carbonate were stirred, and at 65 ° C for 24 h under nitrogen. After the end, the pH of 3.0 was adjusted with hydrochloric acid, then extracted with ethanol, and the product was dried in vacuo at 100 ° C for 5 h to give the carboxyl chlorinated paraffin 70.
[0059](2) Preparation of chloride-containing chloride 70: 70 mol of carboxyl-free chlorinated chlorinated wax 70, add 120 mol of sulfoxide, stirring and warping to reflux, reaction for 5 h, to obtain chloride chloride 70 .
[0060](3) Preparation of the bromochlorinated paraffin 70 of the hydroxyl-blocking: 100 mol of dibromophyliniol and an appropriate amount of bindic acid anhydrous triethylamine were added, and nitrogen gas was transferred in the reaction kettle, and added at 0 ° C. After 102 mol chloride-containing chlorinated chlorinated paraffin 70, t...
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