News Details
Soft polyurethane foam flame retardant
2017-11-7 19:12:12
Soft polyurethane foam flame retardant
The phosphorus, chlorine, boron, nitrogen, phosphorus and nitrogen etc. the soft polyurethane foam flame retardant by impregnation process of soft polyurethane foam, and the thermal analysis method for testing the thermal decomposition results show that the addition of soft polyurethane foam plastic flame retardant after weight loss the process of soft polyurethane foam became complex, thermal decomposition reaction apparent activation energy has great effect, and found that six sodium hexametaphosphate of soft polyurethane foam has good flame retardant effect.
The polyurethane foam containing combustible hydrocarbon chain segment, the low density, large area, without flame retardant polyurethane foam is combustible, the fire burning and decomposition of toxic smoke a lot, to the evacuation and fire caused great difficulties.
Especially the soft polyurethane foam (FPUF) opening rate is higher, the combustible components, combustion due to high air circulation and Everfount supply of oxygen, flammable and easy to self extinguishing, prone to major fire accidents Qunsiqunshang, such as the December 2000 Henan Luoyang Xiamen Dongdu taking fire, due to staff illegalelectric operation welding sparks to the inventory of sponge mattress, sofa combustibles, and spread to the four floor entertainment city failed to control in a timely manner, resulting in 309 people were asphyxiated.
At present, with the continuous development of economy, the use of polyurethane foam increases greatly, and the flame retardant requirements of polyurethane soft foam are more and more urgent. What is the change of the decomposition of polyurethane foam after flame retardant treatment of flexible polyurethane foam plastics, and the change of decomposition mechanism has not been reported systematically at present. In this paper, the effects of various soft polyurethane foam flame retardants on the thermal decomposition of polyurethane foam were studied by thermal analysis.
Experimental drugs: ammonium polyphosphate, potassium dihydrogen phosphate, ammonium chloride, two cyano two amine, amine, two hydrogen phosphate melamine, borax, boric acid ammonium, six sodium hexametaphosphate (all chemically pure).
The flexible polyurethane foam cut grow wide high are 50mm the shape of the flame retardant were dissolved in distilled water according to the ratio of 40%, the soft polyurethane foam in the solution, 10min solution soak extrusion, squeeze out the extra, drying in the oven at 100 deg.C. The flexible polyurethane foam blank sample cut into powder, with electronic balance weighing about 5mg into the standard crucible, adjusting thermal analyzer starting temperature rose to 700 degrees from 50 degrees to 10 degrees, the heating rate of /min in nitrogen (30ml/min) experiments were carried out to analyze the atmosphere.
From the thermal analysis results show that soft polyurethane foam at 235.37 DEG C has been decomposed, the decomposition process can be divided into 230 to 350 DEG C, critical temperature range of 350 to 410 DEG C to two weight changes, in the initial stage of decomposition (230 to 350 DEG C), the decomposition rate is slow. About 25% weight loss stages.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Product Name: Tris (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP); TCPP Tris (2-Chloropropyl) Phosphate, Flame Retardant TDCPP
1,3-Dichloro-2-Propanolphosphate (3: 1); 1,3-Dichloro-2-Propanolophosphate (3: 1) 2-Propanol, 1,3-Dichloro, Phosphate (3: 1); 2-Propanol, 1,3-Dichloro-, Phosphate (3: 1) ); Crp (Fireproofingagent); Emulsion 212
CAS No.:13674-87-8
EINECS Number: 237-159-2
Molecular Formula: C9H15Cl6O4P
Molecular Weight: 430.9
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
In this process, isocyanate, polyols, ammonia and carbon dioxide were released, isocyanate volatile yellow smoke, resulting in loss of quality. When the temperature increased to 350, the decomposition rate increased and the weight loss increased, and the weight loss was about 60% at the temperature of 350 ~ 410. At this stage, the residual alcohols, which are retained in the form of residue, begin to decompose and give rise to mass loss due to ethylene, ethane, formaldehyde, propylene, ethylene oxide, acetone, isopropyl alcohol, etc..
When the temperature is above 500 degrees, the quality has no change basically. Finally, the weight of polyurethane residue is about 15%. We can see from the DTG diagram that there are two large weight loss peaks in Pu soft foam, which shows that the decomposition weight loss occurs mainly in these two stages, and the maximum decomposition rate occurs at about 384.
The sodium hexametaphosphate polyurethane soft foam at 219.53 DEG C starts to break down from the DTG curve to add, see the weight loss process is more complex, can be divided into 3 stages: weight loss of 219 to 230 DEG C to 350 DEG C, 230, 350 to 400 DEG C. The first stage of the loss of about 3%, the lower temperature, weight loss is smaller, the bubble breakdown influence small; the second phase of the weight loss is about 16%, the third phase of the weight loss of about 13%, the activation energy is 147.17kJ/mol.
After adding the potassium dihydrogen phosphate, compared with the blank sample decomposition temperature in advance, the decomposition process is relatively complex, can be divided into three stages of weight loss, 219 to 230 DEG C, the less weight loss of about 5%, the smaller bubble decomposition effect; 230 to 300 DEG C, second weight loss stage is about 20% to 300 DEG C; to 400 DEG C, the third phase of the weight loss of about 25%, the activation energy is 121.75kJ/mol.
After adding the flame retardant polyurethane foam that initial decomposition temperature in advance, the activation energy decreased, the maximum decomposition rate decreases, this is mainly because the flame retardant soft foam to break first decomposition of phosphorus oxygen acid temperature, thus the catalytic dehydration of soft polyurethane foam into carbon, reduce the loss of quality of production and the rate of combustible materials, and most of the residual carbon layer in phosphorus, which proved the remaining amount of combustion has great results.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The phosphorus, chlorine, boron, nitrogen, phosphorus and nitrogen etc. the soft polyurethane foam flame retardant by impregnation process of soft polyurethane foam, and the thermal analysis method for testing the thermal decomposition results show that the addition of soft polyurethane foam plastic flame retardant after weight loss the process of soft polyurethane foam became complex, thermal decomposition reaction apparent activation energy has great effect, and found that six sodium hexametaphosphate of soft polyurethane foam has good flame retardant effect.
The polyurethane foam containing combustible hydrocarbon chain segment, the low density, large area, without flame retardant polyurethane foam is combustible, the fire burning and decomposition of toxic smoke a lot, to the evacuation and fire caused great difficulties.
Especially the soft polyurethane foam (FPUF) opening rate is higher, the combustible components, combustion due to high air circulation and Everfount supply of oxygen, flammable and easy to self extinguishing, prone to major fire accidents Qunsiqunshang, such as the December 2000 Henan Luoyang Xiamen Dongdu taking fire, due to staff illegalelectric operation welding sparks to the inventory of sponge mattress, sofa combustibles, and spread to the four floor entertainment city failed to control in a timely manner, resulting in 309 people were asphyxiated.
At present, with the continuous development of economy, the use of polyurethane foam increases greatly, and the flame retardant requirements of polyurethane soft foam are more and more urgent. What is the change of the decomposition of polyurethane foam after flame retardant treatment of flexible polyurethane foam plastics, and the change of decomposition mechanism has not been reported systematically at present. In this paper, the effects of various soft polyurethane foam flame retardants on the thermal decomposition of polyurethane foam were studied by thermal analysis.
Experimental drugs: ammonium polyphosphate, potassium dihydrogen phosphate, ammonium chloride, two cyano two amine, amine, two hydrogen phosphate melamine, borax, boric acid ammonium, six sodium hexametaphosphate (all chemically pure).
The flexible polyurethane foam cut grow wide high are 50mm the shape of the flame retardant were dissolved in distilled water according to the ratio of 40%, the soft polyurethane foam in the solution, 10min solution soak extrusion, squeeze out the extra, drying in the oven at 100 deg.C. The flexible polyurethane foam blank sample cut into powder, with electronic balance weighing about 5mg into the standard crucible, adjusting thermal analyzer starting temperature rose to 700 degrees from 50 degrees to 10 degrees, the heating rate of /min in nitrogen (30ml/min) experiments were carried out to analyze the atmosphere.
From the thermal analysis results show that soft polyurethane foam at 235.37 DEG C has been decomposed, the decomposition process can be divided into 230 to 350 DEG C, critical temperature range of 350 to 410 DEG C to two weight changes, in the initial stage of decomposition (230 to 350 DEG C), the decomposition rate is slow. About 25% weight loss stages.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
Product Name: Tris (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; (1,3-Dichloro-2-Propyl) Phosphate; Tris (1,3-Dichloroisopropyl) Phosphate; Tris (1,3-Dichloroisopropyl) Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP); TCPP Tris (2-Chloropropyl) Phosphate, Flame Retardant TDCPP
1,3-Dichloro-2-Propanolphosphate (3: 1); 1,3-Dichloro-2-Propanolophosphate (3: 1) 2-Propanol, 1,3-Dichloro, Phosphate (3: 1); 2-Propanol, 1,3-Dichloro-, Phosphate (3: 1) ); Crp (Fireproofingagent); Emulsion 212
CAS No.:13674-87-8
EINECS Number: 237-159-2
Molecular Formula: C9H15Cl6O4P
Molecular Weight: 430.9
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
In this process, isocyanate, polyols, ammonia and carbon dioxide were released, isocyanate volatile yellow smoke, resulting in loss of quality. When the temperature increased to 350, the decomposition rate increased and the weight loss increased, and the weight loss was about 60% at the temperature of 350 ~ 410. At this stage, the residual alcohols, which are retained in the form of residue, begin to decompose and give rise to mass loss due to ethylene, ethane, formaldehyde, propylene, ethylene oxide, acetone, isopropyl alcohol, etc..
When the temperature is above 500 degrees, the quality has no change basically. Finally, the weight of polyurethane residue is about 15%. We can see from the DTG diagram that there are two large weight loss peaks in Pu soft foam, which shows that the decomposition weight loss occurs mainly in these two stages, and the maximum decomposition rate occurs at about 384.
The sodium hexametaphosphate polyurethane soft foam at 219.53 DEG C starts to break down from the DTG curve to add, see the weight loss process is more complex, can be divided into 3 stages: weight loss of 219 to 230 DEG C to 350 DEG C, 230, 350 to 400 DEG C. The first stage of the loss of about 3%, the lower temperature, weight loss is smaller, the bubble breakdown influence small; the second phase of the weight loss is about 16%, the third phase of the weight loss of about 13%, the activation energy is 147.17kJ/mol.
After adding the potassium dihydrogen phosphate, compared with the blank sample decomposition temperature in advance, the decomposition process is relatively complex, can be divided into three stages of weight loss, 219 to 230 DEG C, the less weight loss of about 5%, the smaller bubble decomposition effect; 230 to 300 DEG C, second weight loss stage is about 20% to 300 DEG C; to 400 DEG C, the third phase of the weight loss of about 25%, the activation energy is 121.75kJ/mol.
After adding the flame retardant polyurethane foam that initial decomposition temperature in advance, the activation energy decreased, the maximum decomposition rate decreases, this is mainly because the flame retardant soft foam to break first decomposition of phosphorus oxygen acid temperature, thus the catalytic dehydration of soft polyurethane foam into carbon, reduce the loss of quality of production and the rate of combustible materials, and most of the residual carbon layer in phosphorus, which proved the remaining amount of combustion has great results.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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