News Details
Three elements of expansive flame retardant
2017-10-7 10:40:32
Three elements of expansive flame retardant
Only when the three elements (acid source, carbon source and gas source) of the expansive flame retardant are present in the proper proportion, they have good expansion effect and flame retardant properties. The residual weight of expansive flame retardant can be regarded as one of the indexes of its flame retardant performance.
An inflating type of flame retardant. Acid source: usually refers to the salt that produces acid when it burns, such as phosphoric acid, sulfuric acid, boric acid and phosphate
2. Carbon source: polyols containing carbon, such as pentaerythritol, ethylene glycol, phenolic resin, etc
Expansion type flame retardant 3. Foaming source: generally refers to nitrogenous polycarbon compounds, such as urea, dicyandiamide polyamide, etc. Under the action of heat or flame, the acid source, carbon source and gas source rapidly form the multi-empty carbon barrier layer with thermal insulation through chemical reaction, which can organize the propagation of flame. It is the base material from further degradation and combustion to achieve better flame retardant effect. However, there are disadvantages such as high moisture absorption, low initial decomposition temperature, poor dispersion and poor plastic compatibility.
Ⅱ Ⅰ and Ⅲ series flame retardant performance is good, that within a certain range of the phosphorus content increases, flame retardant performance. But the phosphorus content increases, the hygroscopicity of flame retardants is enhanced, so the experiment Ⅱ 1 composition with better.
The effect of expansive flame retardant on the flame retardant properties of epoxy resin. With the increase of the amount of expansive flame retardants, EP's OI increased significantly, and when the amount of expansion flame retardant increased to 40%, OI was 27.3%. The growth rate of OI has been slow and the growth rate of OI has been slow.
The reason for this is that although microscopic capsule red phosphorus expansion type flame retardant can precede EP is decomposed into a porous layer of uniform carbon layer covering on the surface, thus flame retardant effect, but heat release of the expansion type flame retardant themselves can lead to burning the extension of time, the influence to further improve the performance of flame retardant. The effect of expansive flame retardant on the mechanical properties of the material is significant.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
With the increase of the dosage, the tensile strength and elongation at break of material fell sharply, when the expansion type flame retardant agent increased from 0 to 10%, the breaking strength of the materials decreased from 32.40 MPa to 32.40 MPa, the elongation at break decreased from 9.94% to 8.46%. This is because the expansion type flame retardant is not compatible with the EP system. Considering expansion type flame retardant agent EP flame retardant properties and mechanical properties of impact, to determine when the dosage of expansion type flame retardant is 30%, OI reached 26.3%, and the impact on the mechanical properties of the EP system is relatively small
The expansion type flame retardant (IFR) is an environmentally friendly green flame retardant without halogen and antimony oxides as synergistic agents, and its system has synergistic effect. Contain expansion type flame retardant plastic surface will be generated when burnt carbon foam layer, insulation, oxygen, smoke suppression and drip-proof etc, it has excellent flame retardant properties, and low smoke, low toxicity, no corrosive gas, in line with the future direction of the research and development of flame retardant, flame retardant research field at home and abroad has become the most active one.
Intumescent flame retardant (IFR) is a kind of nitrogen and phosphorus as the main component of composite flame retardants, it does not contain halogen, also don't use antimony oxide as association effect, this kind of flame retardant foam expansion when heated, so called expansion type flame retardant, it is a kind of efficient and low toxicity and environmentally friendly flame retardant. After the 1990 s, the study of the expansion type flame retardant gradually became active, it has been recognized as one of the effective ways to realize no halogenated flame retardants, its also potential in flame retardant finishing of textiles.
The flame retardant effect of expansion type flame retardant mainly depends on forming porous foam coke layer on the surface of the material. It is a polyphase system containing solid and liquid and gaseous products. The flame retardant properties of the carbon layer are mainly reflected in: making it difficult to penetrate the condensing phase, preventing oxygen from entering the combustion zone, and preventing the degradation of the gas or liquid products that are produced by the degradation of the surface of the material.
Coke formation process is: about 150 ℃, the acid source can produce esterifying multivariate alcohol and acid can be used as dehydrating agent; At a slightly higher temperature, the acid reacts with the carbon source, while the amine base in the system ACTS as the catalyst for the esterification reaction, accelerating the reaction. System before esterification reaction and melt esterification process, reaction process of non-combustible gases already in the molten state of the foaming system, at the same time, multivariate alcohol and ester dehydration, carbide form inorganic substances and carbon residue, foam system further; When the reaction is close to completion, the system is gelatinized and cured, and the porous foam carbon layer is formed.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Only when the three elements (acid source, carbon source and gas source) of the expansive flame retardant are present in the proper proportion, they have good expansion effect and flame retardant properties. The residual weight of expansive flame retardant can be regarded as one of the indexes of its flame retardant performance.
An inflating type of flame retardant. Acid source: usually refers to the salt that produces acid when it burns, such as phosphoric acid, sulfuric acid, boric acid and phosphate
2. Carbon source: polyols containing carbon, such as pentaerythritol, ethylene glycol, phenolic resin, etc
Expansion type flame retardant 3. Foaming source: generally refers to nitrogenous polycarbon compounds, such as urea, dicyandiamide polyamide, etc. Under the action of heat or flame, the acid source, carbon source and gas source rapidly form the multi-empty carbon barrier layer with thermal insulation through chemical reaction, which can organize the propagation of flame. It is the base material from further degradation and combustion to achieve better flame retardant effect. However, there are disadvantages such as high moisture absorption, low initial decomposition temperature, poor dispersion and poor plastic compatibility.
Ⅱ Ⅰ and Ⅲ series flame retardant performance is good, that within a certain range of the phosphorus content increases, flame retardant performance. But the phosphorus content increases, the hygroscopicity of flame retardants is enhanced, so the experiment Ⅱ 1 composition with better.
The effect of expansive flame retardant on the flame retardant properties of epoxy resin. With the increase of the amount of expansive flame retardants, EP's OI increased significantly, and when the amount of expansion flame retardant increased to 40%, OI was 27.3%. The growth rate of OI has been slow and the growth rate of OI has been slow.
The reason for this is that although microscopic capsule red phosphorus expansion type flame retardant can precede EP is decomposed into a porous layer of uniform carbon layer covering on the surface, thus flame retardant effect, but heat release of the expansion type flame retardant themselves can lead to burning the extension of time, the influence to further improve the performance of flame retardant. The effect of expansive flame retardant on the mechanical properties of the material is significant.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
With the increase of the dosage, the tensile strength and elongation at break of material fell sharply, when the expansion type flame retardant agent increased from 0 to 10%, the breaking strength of the materials decreased from 32.40 MPa to 32.40 MPa, the elongation at break decreased from 9.94% to 8.46%. This is because the expansion type flame retardant is not compatible with the EP system. Considering expansion type flame retardant agent EP flame retardant properties and mechanical properties of impact, to determine when the dosage of expansion type flame retardant is 30%, OI reached 26.3%, and the impact on the mechanical properties of the EP system is relatively small
The expansion type flame retardant (IFR) is an environmentally friendly green flame retardant without halogen and antimony oxides as synergistic agents, and its system has synergistic effect. Contain expansion type flame retardant plastic surface will be generated when burnt carbon foam layer, insulation, oxygen, smoke suppression and drip-proof etc, it has excellent flame retardant properties, and low smoke, low toxicity, no corrosive gas, in line with the future direction of the research and development of flame retardant, flame retardant research field at home and abroad has become the most active one.
Intumescent flame retardant (IFR) is a kind of nitrogen and phosphorus as the main component of composite flame retardants, it does not contain halogen, also don't use antimony oxide as association effect, this kind of flame retardant foam expansion when heated, so called expansion type flame retardant, it is a kind of efficient and low toxicity and environmentally friendly flame retardant. After the 1990 s, the study of the expansion type flame retardant gradually became active, it has been recognized as one of the effective ways to realize no halogenated flame retardants, its also potential in flame retardant finishing of textiles.
The flame retardant effect of expansion type flame retardant mainly depends on forming porous foam coke layer on the surface of the material. It is a polyphase system containing solid and liquid and gaseous products. The flame retardant properties of the carbon layer are mainly reflected in: making it difficult to penetrate the condensing phase, preventing oxygen from entering the combustion zone, and preventing the degradation of the gas or liquid products that are produced by the degradation of the surface of the material.
Coke formation process is: about 150 ℃, the acid source can produce esterifying multivariate alcohol and acid can be used as dehydrating agent; At a slightly higher temperature, the acid reacts with the carbon source, while the amine base in the system ACTS as the catalyst for the esterification reaction, accelerating the reaction. System before esterification reaction and melt esterification process, reaction process of non-combustible gases already in the molten state of the foaming system, at the same time, multivariate alcohol and ester dehydration, carbide form inorganic substances and carbon residue, foam system further; When the reaction is close to completion, the system is gelatinized and cured, and the porous foam carbon layer is formed.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian