News Details
Polypropylene (PP) mixed intumescent flame retardant
2017-12-6 10:42:22
Polypropylene (PP) mixed intumescent flame retardant is a flame retardant which combines carbon source, acid source and gas source compound in a certain proportion. Polypropylene (PP) mixed intumescent flame retardant, the most typical halogen-free intumescent flame retardant system is Camino et al. Research on the flame retardant polypropylene (PP) of ammonium polyphosphate pentaerythritol (APP-PER) system.
The mechanism of intumescent flame retardancy is revealed through the study of thermal decomposition, expansion characteristics, carbon layer composition and mechanism of flame retardant PP, which laid the foundation for the development of intumescent flame retardant polymer nowadays.
The study of polypropylene (PP) mixed intumescent flame retardant showed that when the ratio of APP to PER was 3:1 (mass ratio) and the addition amount was 30% (mass fraction), the limit oxygen index of PP/ APP-PER system could reach 30%. The analysis of thermal weight loss shows that at 550 C, the theoretical carbon residue of PP/ APP-PER system is only about 10%, but the amount of residual carbon obtained by the experiment is up to 23%.
By using scanning electron microscope (SEM) of flame retardant additives for different types of 25%~30% intumescent carbon layer and flame retardant PP samples were studied. The results show that the morphology of carbon layer are very similar, the bubble slightly irregular, the diameter distribution between 10~15 m, the cell wall thickness in 1~3 M.
Hu and so on use cyanuric chloride, ammonia and two ethylene glycol three amine reaction to get a three zine derivative, the molecular structure is shown in Figure 9, and it is used as a charring agent and APP interacts with the flame retardant polyethylene (PE). The results showed that the addition of charring agents effectively promoted the carbon generation of the system. When the total amount of intumescent flame retardant was 30%, the ratio of APP to charcoal agent was 11:4, the flame retardancy of PE system was the best, the limit oxygen index reached 31.2%, and it was tested by UL 94 V-0 level.
In addition to the three azine derivatives, polyamide (PA), as a carbon forming agent, has been reported to be used as a carbon - forming agent in the research of polymer flame retardants. The research of expanded flame retardant polyolefin system with PA6 as carbon source and APP as acid source has been reported.
Almer as of PA6/APP intumescent flame retardant fire retardant system of PP, but also EVA, butyl acrylate maleic anhydride copolymer (EBuAMA) blends used in between APP and PA6, not only on the performance of flame retardant system has a very good role in promoting, and the mechanical properties are improved to a certain extent. The results showed that when the addition amount of APP/PA6 (3/1) was 35%, when the amount of EVA was 5%, the flame retardant PP not only reached the limit oxygen index of 30%, but also reached the UL 94 V-0 level.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Bourbigot et al. Studied the PA6/APP intumescent flame retardant ethylene vinyl acetate copolymer (EVA). For the system with 30% PA6/APP addition, when the ratio of APP to PA6 is 25:5, the limit oxygen index can reach 26%, and UL 94 vertical combustion reaches V-0 level.
Sichuan University Cai Xufu PA6 as a charring agent used in acrylonitrile butadiene styrene copolymer (ABS) flame retardant, the results show that the PA6 can react with APP to form a large number of intumescent carbon layer in the combustion process, greatly increased the amount of residual carbon system, when the amount of APP in 20%~ 30%, the limiting oxygen flame retardant system the index reached more than 27%, and the UL 94 V-1 rating.
At the same time, reported in the literature, PA6/ clay nanocomposites as carbon source for intumescent flame retardant EVA system has better flame retardant effect than PA6, when the PA6/ nano clay instead of PA6 system, the limiting oxygen index by EVA/PP/PA6 (60:30:10) system rose to 32% EVA/APP/PA6/ nano clay (60:30:10) 37%, and the strength and fracture elongation of EVA/ nano clay are better than the APP/PA6/ system EVA/APP/PA6 system.
Halogen free intumescent flame retardant is divided into single component and mixed type intumescent flame retardant intumescent flame retardant, due to intumescent flame retardant plastic will have a layer of fluffy sealing carbon foam layer structure formed on the surface in combustion, its not burning but also can weaken the heat conduction between the polymer and the heat source, and can prevent gas diffusion. The porous carbon layer has the effect of heat insulation, oxygen, no drop and the flame self extinguishing, and there is no toxic gas in the combustion. Therefore, the intumescent flame retardancy technology has become a hot spot in the research of flame retardant technology.
The single component expansive flame retardant is the flame retardant of the carbon source, the acid source and the gas source in the same molecule. At present, there are few commercialization of single component intumescent flame retardants domestically, most of which are in the laboratory study stage.
2,4,8,10- four oxygen - 3,9- two phosphor rings [5,5] eleven alkane - 3,9- two oxygen -3,9- two melamine salt (b-MAP), that is, CN-329 flame retardant. In real sense, acid sources, carbon sources and gas sources are synthesized on a large molecule. This flame retardant has good compatibility with PP. It is not soluble in water and most organic solvents, and has good thermal stability. It is found that PP containing 23% flame retardants can achieve UL 94 V-0 flame retardant grade, the longest burning time is 8s, and the average combustion time is 2S.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The mechanism of intumescent flame retardancy is revealed through the study of thermal decomposition, expansion characteristics, carbon layer composition and mechanism of flame retardant PP, which laid the foundation for the development of intumescent flame retardant polymer nowadays.
The study of polypropylene (PP) mixed intumescent flame retardant showed that when the ratio of APP to PER was 3:1 (mass ratio) and the addition amount was 30% (mass fraction), the limit oxygen index of PP/ APP-PER system could reach 30%. The analysis of thermal weight loss shows that at 550 C, the theoretical carbon residue of PP/ APP-PER system is only about 10%, but the amount of residual carbon obtained by the experiment is up to 23%.
By using scanning electron microscope (SEM) of flame retardant additives for different types of 25%~30% intumescent carbon layer and flame retardant PP samples were studied. The results show that the morphology of carbon layer are very similar, the bubble slightly irregular, the diameter distribution between 10~15 m, the cell wall thickness in 1~3 M.
Hu and so on use cyanuric chloride, ammonia and two ethylene glycol three amine reaction to get a three zine derivative, the molecular structure is shown in Figure 9, and it is used as a charring agent and APP interacts with the flame retardant polyethylene (PE). The results showed that the addition of charring agents effectively promoted the carbon generation of the system. When the total amount of intumescent flame retardant was 30%, the ratio of APP to charcoal agent was 11:4, the flame retardancy of PE system was the best, the limit oxygen index reached 31.2%, and it was tested by UL 94 V-0 level.
In addition to the three azine derivatives, polyamide (PA), as a carbon forming agent, has been reported to be used as a carbon - forming agent in the research of polymer flame retardants. The research of expanded flame retardant polyolefin system with PA6 as carbon source and APP as acid source has been reported.
Almer as of PA6/APP intumescent flame retardant fire retardant system of PP, but also EVA, butyl acrylate maleic anhydride copolymer (EBuAMA) blends used in between APP and PA6, not only on the performance of flame retardant system has a very good role in promoting, and the mechanical properties are improved to a certain extent. The results showed that when the addition amount of APP/PA6 (3/1) was 35%, when the amount of EVA was 5%, the flame retardant PP not only reached the limit oxygen index of 30%, but also reached the UL 94 V-0 level.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Bourbigot et al. Studied the PA6/APP intumescent flame retardant ethylene vinyl acetate copolymer (EVA). For the system with 30% PA6/APP addition, when the ratio of APP to PA6 is 25:5, the limit oxygen index can reach 26%, and UL 94 vertical combustion reaches V-0 level.
Sichuan University Cai Xufu PA6 as a charring agent used in acrylonitrile butadiene styrene copolymer (ABS) flame retardant, the results show that the PA6 can react with APP to form a large number of intumescent carbon layer in the combustion process, greatly increased the amount of residual carbon system, when the amount of APP in 20%~ 30%, the limiting oxygen flame retardant system the index reached more than 27%, and the UL 94 V-1 rating.
At the same time, reported in the literature, PA6/ clay nanocomposites as carbon source for intumescent flame retardant EVA system has better flame retardant effect than PA6, when the PA6/ nano clay instead of PA6 system, the limiting oxygen index by EVA/PP/PA6 (60:30:10) system rose to 32% EVA/APP/PA6/ nano clay (60:30:10) 37%, and the strength and fracture elongation of EVA/ nano clay are better than the APP/PA6/ system EVA/APP/PA6 system.
Halogen free intumescent flame retardant is divided into single component and mixed type intumescent flame retardant intumescent flame retardant, due to intumescent flame retardant plastic will have a layer of fluffy sealing carbon foam layer structure formed on the surface in combustion, its not burning but also can weaken the heat conduction between the polymer and the heat source, and can prevent gas diffusion. The porous carbon layer has the effect of heat insulation, oxygen, no drop and the flame self extinguishing, and there is no toxic gas in the combustion. Therefore, the intumescent flame retardancy technology has become a hot spot in the research of flame retardant technology.
The single component expansive flame retardant is the flame retardant of the carbon source, the acid source and the gas source in the same molecule. At present, there are few commercialization of single component intumescent flame retardants domestically, most of which are in the laboratory study stage.
2,4,8,10- four oxygen - 3,9- two phosphor rings [5,5] eleven alkane - 3,9- two oxygen -3,9- two melamine salt (b-MAP), that is, CN-329 flame retardant. In real sense, acid sources, carbon sources and gas sources are synthesized on a large molecule. This flame retardant has good compatibility with PP. It is not soluble in water and most organic solvents, and has good thermal stability. It is found that PP containing 23% flame retardants can achieve UL 94 V-0 flame retardant grade, the longest burning time is 8s, and the average combustion time is 2S.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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