Heat-resistant flame-retardant polyvinyl chloride board
A technology of flame-retardant polyvinyl chloride and chlorinated polyethylene, which is applied in the field of heat-resistant flame-retardant polymer materials, can solve the problems of general flame-retardant effect and obstacles to wide application, and achieve good processing performance, low cost, high flame retardancy performance effect
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Embodiment 1
[0026] (1) Preparation of carboxyl-containing chlorinated paraffin 42: Dissolve 20 g of chlorinated paraffin 42 in 200 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 30 g of potassium carbonate, and react at 55° C. for 30 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol, and the product was vacuum-dried at 100° C. for 5 h to obtain carboxyl-containing chlorinated paraffin 42.
[0027] (2) Preparation of chlorinated paraffin 42 containing acid chloride: add 70 mol of chlorinated paraffin 42 containing carboxyl to the reaction kettle, dropwise add 150 mol of thionyl chloride, stir and heat up to reflux, and react for 6 hours to obtain chlorinated paraffin 42 containing acid chloride .
[0028] (3) Preparation of flame retardant: add 50mol10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide and an appropriate amount of acid-binding to the reaction kettl...
Embodiment 2
[0031] (1) Preparation of carboxyl-containing chlorinated paraffin 52: Dissolve 20 g of chlorinated paraffin 52 in 200 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 30 g of potassium carbonate, and react at 80° C. for 10 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol. The product was vacuum-dried at 100° C. for 5 h to obtain carboxyl-containing chlorinated paraffin 52.
[0032] (2) Preparation of chlorinated paraffin 52 containing acid chloride: add 70 mol of chlorinated paraffin 52 containing carboxyl group in the reaction kettle, dropwise add 150 mol of thionyl chloride, stir and heat up to reflux, and react for 4 hours to obtain chlorinated paraffin 52 containing acid chloride .
[0033] (3) Preparation of flame retardant: add 50mol10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide and an appropriate amount of acid-binding to the reaction ket...
Embodiment 3
[0036] (1) Preparation of carboxyl-containing chlorinated paraffin 70: Dissolve 20 g of chlorinated paraffin 52 in 200 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 30 g of potassium carbonate, and react at 65° C. for 24 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol, and the product was vacuum-dried at 100°C for 5 hours to obtain carboxyl-containing chlorinated paraffin 70.
[0037] (2) Preparation of chlorinated paraffin 70 containing acid chloride: add 70 mol of chlorinated paraffin 70 containing carboxyl to the reaction kettle, dropwise add 150 mol of thionyl chloride, stir and heat up to reflux, and react for 5 hours to obtain chlorinated paraffin 70 containing acid chloride .
[0038](3) Preparation of flame retardant: add 50mol10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide and an appropriate amount of acid-binding to the reaction kett...
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