News Details
Rubber flame retardant
2017-9-18 17:40:58
Rubber flame retardant melamine cyanuric acid ester under 300 ° C sharp decomposition (mass loss up to 33. If it continues to heat up, the inert nitride may inhibit the burning of the rubber.
At temperatures of 100 ° C to 100 ° C in the area of differential thermal analysis data show that increased flame retardant rubber rubber during combustion of the stability of the thermal degradation and thermal oxygen degradation, thus the pyrolysis process of silicone rubber has a positive effect.
Need to point out is, whether it is rubber flame retardant in silicone rubber, or does not contain flame retardants their thermal stability of silicone rubber in front of 220 ° C are roughly the same. But when the temperature is high, the rubber cracking process is different.
The original rubber within 220 ° C to 300 ° C for thermal process will be accompanied by a thermal enthalpy drop. The quality of the rubber sample is not much changed in this temperature range (8. 3), it can be concluded that the heat absorption effect is not obvious due to the precipitate of the volatiles in rubber.
At 320 ° C to 330 ° C and 395 ° C to 405 ° C temperature range exothermic effect is the largest. The latter is caused by the process of thermal oxidation degradation. In this temperature range, first the vinyl, then the methyl radical separation.
By differential thermal analysis results, the ammonium polyphosphate effect on the properties of silicone rubber are similar to those of Al (OH) 3: namely at 220 ° C to 280 ° C temperature range for the decomposition of flame retardant of endothermic process, after the transition to the vague hotspots. Heat is related to the raw rubber thermal decomposition process of oxygen [rubber containing (NH4PO3) n is 420 ° C to 420 ° C; containing Al (OH) 3 rubber for 420 ° C to 430 ° C]. In rubber containing ammonium polyphosphate on the differential thermal analysis curves of as flame retardants in decomposed under 250 ° C to 300 ° C, no original silicone rubber inherent characteristics - - exothermic effect. This may be due to the formation of a glass-protective layer on the rubber surface. The latter blocks the degradation in rubber.
Cresyl Diphenyl Phosphate(CDP)
English Name: Cresyl Diphenyl Phosphate
2-Methylphenyl Diphenyl Phosphate; Cresyl Phenyl Phosphate; Cresyldiphenylphosphate (Cdpmixedisomers); Diphenyl Tolyl Ester Phosphoric Acid; Disflamoll Dpk; Disflamoll DPK, TPK; Disflamolldpk; Kronitex Cdp
CAS Number: 26444-49-5
Molecular Formula: C19H17O4P
Molecular Weight: 340.31
EINECS Number: 247-693-8
Appearance: Colorless Transparent Liquid, Soluble In Organic Solvents, Slightly Soluble In Water.
Density: 1.2
Melting Point: -38 ℃
Flash Point: 232 ℃
Molecular Weight: 340.31
Free Phenol: (0.1% Max)
Boiling Point: 235-255 ° C
Moisture% (0.1% Max)
Molecular Formula: C19H17O4P
Flash Point (Open Cup): (220Min)
Acid Value (MgKOH / G): (0.1MAX)
Relative Density (25 ℃): (1.195-1.212)
Raw Materials: Through The Raw Materials Of Cresol, Phenol, Phosphorus Oxychloride.
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Counter To Play With 16 Tons), 1000KG / IB Barrel (A Small Cabinet Installed 18 Tons) Or 23 Tons ISOTANK.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
When using ammonium melamine cyanuric acid ester, in addition to ethylene side base from the liberation of thermal process, plus packing under 390 ° C to 400 ° C decomposition of endothermic reaction. The second exothermic peak of methyl oxidation to move to higher temperature range (425 ° C to 435 ° C).
Therefore, to add flame retardant rubber can the exothermic decomposition process of silicone rubber to significantly high (about 50 ° C to 80 ° C). Because in this case the decomposition of the flame retardant itself is decisive. The decomposition of flame retardants with the release of water and inert gas can also reduce the combustion of rubber.
All kinds of flame retardants in under the optimal quantity of glue and the performance of the vulcanizates corresponding to П В grade (O) flame resistance. The effect of melamine cyanide on the strength of silicone rubber was minimal. The insulation strength and volume resistivity of the sulphide were reduced after the ammonium polyphosphate was used. Melamine cyanuric acid ester and aluminum hydroxide have high water absorption stability, and their dielectric properties are almost constant after the samples are soaked in water. Therefore, although ammonium polyphosphate ACTS as an effective inhibitor, the rubber containing the flame retardant is not suitable for the products used in wet environment.
Can draw the following conclusion analysis of the experimental data, which means the study of four kinds of flame retardants [Al (OH) 3, (NH4PO3) nNH4PO3 and C6H9N9O3)] has a positive effect on silicone rubber hot oxygen degradation reaction, can improve the flame resistance of silicone rubber and maintain a good process performance and mechanics performance. Thermal analysis can determine the characteristics of flame retardant. Including the flame retardant rubber, the flame resistance of П В level (O), suggested that can be used in the production of various rubber products.
100 epoxy resin, polyurethane pre polymers 30, flame retardants, 30, the preparation of modified flame retardant adhesive has excellent toughness and flame retardant performance, the tensile shear strength is 21.13 MPa, oxygen index was 29.16%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
At temperatures of 100 ° C to 100 ° C in the area of differential thermal analysis data show that increased flame retardant rubber rubber during combustion of the stability of the thermal degradation and thermal oxygen degradation, thus the pyrolysis process of silicone rubber has a positive effect.
Need to point out is, whether it is rubber flame retardant in silicone rubber, or does not contain flame retardants their thermal stability of silicone rubber in front of 220 ° C are roughly the same. But when the temperature is high, the rubber cracking process is different.
The original rubber within 220 ° C to 300 ° C for thermal process will be accompanied by a thermal enthalpy drop. The quality of the rubber sample is not much changed in this temperature range (8. 3), it can be concluded that the heat absorption effect is not obvious due to the precipitate of the volatiles in rubber.
At 320 ° C to 330 ° C and 395 ° C to 405 ° C temperature range exothermic effect is the largest. The latter is caused by the process of thermal oxidation degradation. In this temperature range, first the vinyl, then the methyl radical separation.
By differential thermal analysis results, the ammonium polyphosphate effect on the properties of silicone rubber are similar to those of Al (OH) 3: namely at 220 ° C to 280 ° C temperature range for the decomposition of flame retardant of endothermic process, after the transition to the vague hotspots. Heat is related to the raw rubber thermal decomposition process of oxygen [rubber containing (NH4PO3) n is 420 ° C to 420 ° C; containing Al (OH) 3 rubber for 420 ° C to 430 ° C]. In rubber containing ammonium polyphosphate on the differential thermal analysis curves of as flame retardants in decomposed under 250 ° C to 300 ° C, no original silicone rubber inherent characteristics - - exothermic effect. This may be due to the formation of a glass-protective layer on the rubber surface. The latter blocks the degradation in rubber.
Cresyl Diphenyl Phosphate(CDP)
English Name: Cresyl Diphenyl Phosphate
2-Methylphenyl Diphenyl Phosphate; Cresyl Phenyl Phosphate; Cresyldiphenylphosphate (Cdpmixedisomers); Diphenyl Tolyl Ester Phosphoric Acid; Disflamoll Dpk; Disflamoll DPK, TPK; Disflamolldpk; Kronitex Cdp
CAS Number: 26444-49-5
Molecular Formula: C19H17O4P
Molecular Weight: 340.31
EINECS Number: 247-693-8
Appearance: Colorless Transparent Liquid, Soluble In Organic Solvents, Slightly Soluble In Water.
Density: 1.2
Melting Point: -38 ℃
Flash Point: 232 ℃
Molecular Weight: 340.31
Free Phenol: (0.1% Max)
Boiling Point: 235-255 ° C
Moisture% (0.1% Max)
Molecular Formula: C19H17O4P
Flash Point (Open Cup): (220Min)
Acid Value (MgKOH / G): (0.1MAX)
Relative Density (25 ℃): (1.195-1.212)
Raw Materials: Through The Raw Materials Of Cresol, Phenol, Phosphorus Oxychloride.
Packing: Net Weight 200KG / Galvanized Iron Drum (A Small Counter To Play With 16 Tons), 1000KG / IB Barrel (A Small Cabinet Installed 18 Tons) Or 23 Tons ISOTANK.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
When using ammonium melamine cyanuric acid ester, in addition to ethylene side base from the liberation of thermal process, plus packing under 390 ° C to 400 ° C decomposition of endothermic reaction. The second exothermic peak of methyl oxidation to move to higher temperature range (425 ° C to 435 ° C).
Therefore, to add flame retardant rubber can the exothermic decomposition process of silicone rubber to significantly high (about 50 ° C to 80 ° C). Because in this case the decomposition of the flame retardant itself is decisive. The decomposition of flame retardants with the release of water and inert gas can also reduce the combustion of rubber.
All kinds of flame retardants in under the optimal quantity of glue and the performance of the vulcanizates corresponding to П В grade (O) flame resistance. The effect of melamine cyanide on the strength of silicone rubber was minimal. The insulation strength and volume resistivity of the sulphide were reduced after the ammonium polyphosphate was used. Melamine cyanuric acid ester and aluminum hydroxide have high water absorption stability, and their dielectric properties are almost constant after the samples are soaked in water. Therefore, although ammonium polyphosphate ACTS as an effective inhibitor, the rubber containing the flame retardant is not suitable for the products used in wet environment.
Can draw the following conclusion analysis of the experimental data, which means the study of four kinds of flame retardants [Al (OH) 3, (NH4PO3) nNH4PO3 and C6H9N9O3)] has a positive effect on silicone rubber hot oxygen degradation reaction, can improve the flame resistance of silicone rubber and maintain a good process performance and mechanics performance. Thermal analysis can determine the characteristics of flame retardant. Including the flame retardant rubber, the flame resistance of П В level (O), suggested that can be used in the production of various rubber products.
100 epoxy resin, polyurethane pre polymers 30, flame retardants, 30, the preparation of modified flame retardant adhesive has excellent toughness and flame retardant performance, the tensile shear strength is 21.13 MPa, oxygen index was 29.16%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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