News Details
Flame retardants for polystyrene
2017-11-6 11:42:56
Flame retardants for polystyrene
The flame retardant used in polystyrene is nitrogen phosphorus flame retardant. It is a halogen free and intumescent flame retardant specially developed for polystyrene. It is composed of phosphorus has a synergistic effect of nitrogen containing chemical polymerized in polystyrene, good compatibility, effect on the mechanical properties of plastic is very small, and is excellent in processing stability during processing.
The flame retardant polystyrene insulation layer to isolate air carbon expansion flame retardant to produce dense through in the combustion process, without irritating halolide gases and smoke, flame retardant polystyrene with more and more varieties, can choose according to the needs of enterprises.
Processing method of flame retardant for polystyrene
1) after mixing with polystyrene, the extruder is added. Adding a 25%27% quality;
2) in C can be 180200 processing temperature. Due to the good thermal stability of the product, if the specific process needs, it can also be appropriately improved;
3) it is recommended to use twin screw extruder when mixing with polystyrene, and it is better to granulate on parallel twin screw extruder;
4) it is suggested that no other inorganic filler should be added, because the filler will destroy the carbon layer structure and affect the flame retardant effect;
5) it is recommended that no stearate lubricant be added;
6) if antioxidants and light stabilizers are added, organic antioxidants and light stabilizers should be used;
7) polystyrene flame retardants and other additives should be carefully evaluated when used together.
Intumescent flame retardant (IFR) is a kind of flame retardant with C, N and P as its core components. IFR is mainly composed of three parts:? Carbon source (charring agent): General for carbon rich multi functional substances, such as starch, pentaerythritol and two acetal;? Acid source (dehydration agent): General for inorganic acid or acid salts can be generated in situ during heating, such as phosphoric acid, ammonium polyphosphate etc.;? Source (foaming agent): general multi carbon compounds containing nitrogen, such as urea, melamine, dicyandiamide and derivatives.
Flame retardant mechanism of intumescent flame retardant is heated, charring agent in acid dehydration into carbon source, and the effect of the gas blowing agent decomposition, the formation of a fluffy hole closed carbon layer structure, carbon layer can weaken the heat transfer between the polymer and the heat source, and prevent gas diffusion. The polymer stops burning because it does not have enough fuel and oxygen.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
The commercial intumescent flame retardants in the world are CN-329 and Borg-Warner, which are suitable for polystyrene. They are stable in the processing temperature of polystyrene and have good electrical properties. When the addition amount is 30%, the oxygen index of the material is up to 34. Therefore, CN-329 is a good polystyrene flame retardant. It can be seen from the molecular that Melabis has rich acid source and carbon source, which improves the ratio of acid source, carbon source and gas source, and makes Melabis's hygroscopicity much lower than that of CN-329. It is an excellent flame retardant.
In the rapid development of flame retardants, flame retardant technology is also a rapid breakthrough. The surface modification technology, synergetic technology, microencapsulation technology, ultrafining technology, crosslinking, macromolecular technology has been developed rapidly, in the cause of the fire in the fire, plays a very important role.
Flame retardants can be classified into additive flame retardants and reactive flame retardants according to their use. Flame retardants are usually added to fit to the base resin, between them and the resin is only a simple physical mixture; monomer reactive flame retardant generally contains flame retardant molecular elements and reactive groups, such as halogenated anhydride, halogenated bisphenol and phosphorus containing polyol, because of its reactivity can be chemically bonded to the resin molecular chain, become a part of the plastic resin, most reactive flame retardant monomer synthesis structure or adding flame retardant agent.
According to the chemical composition, the flame retardant can also be divided into inorganic flame retardant and organic flame retardant. Inorganic flame retardants include aluminum hydroxide, magnesium hydroxide, antimony oxide, zinc borate and red phosphorus, organic flame retardant for organic halides, bromide, chloride, phosphate, organic halogenated phosphate, nitrogen and nitrogen and phosphorus flame retardant intumescent flame retardant etc.. The function of smoke suppressant is to reduce the smoke content and the release of toxic and harmful gases, mostly molybdenum compounds, tin compounds and iron compounds. Although antimony oxide and zinc borate have smoke suppression properties, they are often used as flame retardant synergistic agents, so they are classified as flame retardant systems.
Flame retardant property is a rigid index of most plastics. The traditional flame retardant material is halogen containing flame retardant. Halogen containing flame retardant material produces a large amount of smoke and toxic corrosive gas, which will cause two times of harm. Common flame retardant formulations are phosphorus compounds, silicon flame retardants, nitrogen flame retardants and metal hydrogen and oxygen. When burning, it does not volatilize and does not produce corrosive gas. It is called pollution-free flame retardant. Halogen free flame retardant is to add suitable halogen free flame retardant to the material to achieve the purpose of flame retardant, while avoiding the two hazards caused by halogen.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The flame retardant used in polystyrene is nitrogen phosphorus flame retardant. It is a halogen free and intumescent flame retardant specially developed for polystyrene. It is composed of phosphorus has a synergistic effect of nitrogen containing chemical polymerized in polystyrene, good compatibility, effect on the mechanical properties of plastic is very small, and is excellent in processing stability during processing.
The flame retardant polystyrene insulation layer to isolate air carbon expansion flame retardant to produce dense through in the combustion process, without irritating halolide gases and smoke, flame retardant polystyrene with more and more varieties, can choose according to the needs of enterprises.
Processing method of flame retardant for polystyrene
1) after mixing with polystyrene, the extruder is added. Adding a 25%27% quality;
2) in C can be 180200 processing temperature. Due to the good thermal stability of the product, if the specific process needs, it can also be appropriately improved;
3) it is recommended to use twin screw extruder when mixing with polystyrene, and it is better to granulate on parallel twin screw extruder;
4) it is suggested that no other inorganic filler should be added, because the filler will destroy the carbon layer structure and affect the flame retardant effect;
5) it is recommended that no stearate lubricant be added;
6) if antioxidants and light stabilizers are added, organic antioxidants and light stabilizers should be used;
7) polystyrene flame retardants and other additives should be carefully evaluated when used together.
Intumescent flame retardant (IFR) is a kind of flame retardant with C, N and P as its core components. IFR is mainly composed of three parts:? Carbon source (charring agent): General for carbon rich multi functional substances, such as starch, pentaerythritol and two acetal;? Acid source (dehydration agent): General for inorganic acid or acid salts can be generated in situ during heating, such as phosphoric acid, ammonium polyphosphate etc.;? Source (foaming agent): general multi carbon compounds containing nitrogen, such as urea, melamine, dicyandiamide and derivatives.
Flame retardant mechanism of intumescent flame retardant is heated, charring agent in acid dehydration into carbon source, and the effect of the gas blowing agent decomposition, the formation of a fluffy hole closed carbon layer structure, carbon layer can weaken the heat transfer between the polymer and the heat source, and prevent gas diffusion. The polymer stops burning because it does not have enough fuel and oxygen.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Cas No:13674 -84-5
HS Code HS: 29199000
The most important indicator of product:
colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5
Raw materials: phosphorus oxychloride and epichlorohydrin.
Belong to several categories of dangerous goods:
Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
The commercial intumescent flame retardants in the world are CN-329 and Borg-Warner, which are suitable for polystyrene. They are stable in the processing temperature of polystyrene and have good electrical properties. When the addition amount is 30%, the oxygen index of the material is up to 34. Therefore, CN-329 is a good polystyrene flame retardant. It can be seen from the molecular that Melabis has rich acid source and carbon source, which improves the ratio of acid source, carbon source and gas source, and makes Melabis's hygroscopicity much lower than that of CN-329. It is an excellent flame retardant.
In the rapid development of flame retardants, flame retardant technology is also a rapid breakthrough. The surface modification technology, synergetic technology, microencapsulation technology, ultrafining technology, crosslinking, macromolecular technology has been developed rapidly, in the cause of the fire in the fire, plays a very important role.
Flame retardants can be classified into additive flame retardants and reactive flame retardants according to their use. Flame retardants are usually added to fit to the base resin, between them and the resin is only a simple physical mixture; monomer reactive flame retardant generally contains flame retardant molecular elements and reactive groups, such as halogenated anhydride, halogenated bisphenol and phosphorus containing polyol, because of its reactivity can be chemically bonded to the resin molecular chain, become a part of the plastic resin, most reactive flame retardant monomer synthesis structure or adding flame retardant agent.
According to the chemical composition, the flame retardant can also be divided into inorganic flame retardant and organic flame retardant. Inorganic flame retardants include aluminum hydroxide, magnesium hydroxide, antimony oxide, zinc borate and red phosphorus, organic flame retardant for organic halides, bromide, chloride, phosphate, organic halogenated phosphate, nitrogen and nitrogen and phosphorus flame retardant intumescent flame retardant etc.. The function of smoke suppressant is to reduce the smoke content and the release of toxic and harmful gases, mostly molybdenum compounds, tin compounds and iron compounds. Although antimony oxide and zinc borate have smoke suppression properties, they are often used as flame retardant synergistic agents, so they are classified as flame retardant systems.
Flame retardant property is a rigid index of most plastics. The traditional flame retardant material is halogen containing flame retardant. Halogen containing flame retardant material produces a large amount of smoke and toxic corrosive gas, which will cause two times of harm. Common flame retardant formulations are phosphorus compounds, silicon flame retardants, nitrogen flame retardants and metal hydrogen and oxygen. When burning, it does not volatilize and does not produce corrosive gas. It is called pollution-free flame retardant. Halogen free flame retardant is to add suitable halogen free flame retardant to the material to achieve the purpose of flame retardant, while avoiding the two hazards caused by halogen.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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