News Details
Rigid polyurethane foam flame retardant
2017-10-26 18:03:51
Rigid polyurethane foam flame retardant
Rigid polyurethane foam plastic, or polyurethane hard foam, it is second only to polyurethane foams in polyurethane products.
Polyurethane rigid foam for the obturator structure, has good performance in thermal insulation, light weight, excellent characteristics, construction is convenient wait for a larger than strength, at the same time also has the sound insulation, shockproof, electric insulation, heat resistant, cold resistant, solvent resistance and other characteristics, widely used in thermal barrier of boxes of refrigerators, freezers, cold storage, refrigerated trucks, such as insulation, buildings and storage tanks and pipe heat preservation material, a small amount is used for non adiabatic occasions, such as imitation wood, packaging materials, etc.
Generally speaking, the low density polyurethane hard foam is mainly used as insulation material, and the high density polyurethane hard foam can be used as structural material (imitation wood).
The proportion of flame-retardant rigid polyurethane foam in rigid polyurethane foam plastics is increasing year by year, and it has increased to 70% - 80 %. Rigid polyurethane foam plastics flame retardants were developed rapidly and the specific requirements for rigid polyurethane foam plastics flame retardants is: after use is not easy to fire, flame propagation resistance is small, smoke, at least when burning generating less harmful gas.
Rigid polyurethane foamed plastic flame retardant should meet the following conditions:
1. Little influence on the properties of foam plastics;
2. Small amount of addition and good effect;
3. The flame retardant effect does not decrease with time;
4. Non-toxic or toxic to ensure safe use;
5. Good mixing with raw materials;
6. Liquid flame retardant viscosity cannot be excessive;
7. Non-corrosive equipment;
It's cheap.
Polyurethane hard foam is generally at room temperature foaming, the forming process is relatively simple. According to the construction mechanization degree can be divided into manual foaming and mechanical foaming; The pressure can be divided into high pressure foaming and low pressure foaming. The molding can be divided into pouring and spraying foaming.
In recent decades, the production of polyurethane hard foam has grown at a phenomenal rate, largely because of its striking features.
(1) polyurethane rigid foam has the advantages of light weight, high strength and stable dimension.
, according to the different requirements for the purpose of the polyurethane rigid foam, the foam is usually lower than the density of 150 kg/m [sup] 3 [/ sup], using hard foam density and even in the range of 8 kg/m [sup] 3 [/ sup], and the density of general rigid insulation materials used for about 28 ~ 60 kg/m [sup] 3 [/ sup].
Tris(2-chloroisopropyl)Phosphate(TCPP)
Tris(2-chloroisopropyl)Phosphate(Flame retardant TCPP) is a colorless or yellowish oily liquid. It is soluble in benzene, alcohol, carbon tetrachloride and other organic solvents, but insoluble in water and aliphatic hydrocarbons. Its relative density is 1.27-1.31, refractive index is 1.4916 ( 21.5 ), viscosity is 58mm2 / S, chlorine content is 32.8%, and phosphorus content is 9.5%. As the molecule contains phosphorus and chlorine element simultaneously, its flame retardant properties is significant, as well as the plasticization, damp-proof, antistatic effects and so on. Tris(2-chloropropyl) phosphate (TCPP) is an additive flame retardant.
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.
In Japan, the standard of polyurethane hard foams for adiabatic USES is divided into three categories. Low density polyurethane hard bubble density 25 ~ 30kg/m [sup]3[/sup] medium density polyurethane hard bubble density 40 ~ 60kg/m [sup]3[/sup]; High density polyurethane hard foam density is greater than 150kg/m [sup].
The mechanical strength of polyurethane hard foam is good. In low temperature, the strength not only will not decrease, but also improve, the dimensional stability of them at low temperature is good, not shrinkage. Under the condition of temperature is 20 ℃ - for 24 h, rigid foam linear change rate is less than 1%.
(2) the adiabatic performance of polyurethane rigid foam plastics is superior.
Polyurethane rigid foam obturator structure content is greater than 90%, in gas bubble hole has a very low heat conduction coefficient, therefore, with polyurethane hard for anything adiabatic profiles, even in the case of very thin, also can obtain very good insulation effect, is currently building materials in the thermal insulation performance of the best varieties.
(3) strong adhesive force.
Polyurethane hard foam metals such as steel, aluminum, stainless steel, for wood, concrete, asbestos, asphalt, paper and other than the polyethylene,
polypropylene and ptfe most plastic materials, has good bonding strength, suitable for preparation of coated surface of adiabatic material shaped materials and electrical equipment insulation blanket potting, can meet the needs of the industrialized mass production.
(4) good aging performance and long insulation life. Practical application shows that the outer skin is not damaged, the long-term use of under - 190 ~ 70 ℃, life can be up to 14 years. It shows superior anti-aging performance. The use of non - permeable decorative material, in the long use of the process, can always maintain excellent thermal insulation effect.
(5) the reaction mixture has good fluidity and can smoothly fill the cavity or chamber of complex shapes. Polyurethane hard - made composite materials are lightweight, easy to assemble, and won't attract insects or rodents to chew and durable.
(6) polyurethane hard foam production material is highly reactive and can be rapidly solidified, which can achieve high efficiency and mass production in the factory.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Rigid polyurethane foam plastic, or polyurethane hard foam, it is second only to polyurethane foams in polyurethane products.
Polyurethane rigid foam for the obturator structure, has good performance in thermal insulation, light weight, excellent characteristics, construction is convenient wait for a larger than strength, at the same time also has the sound insulation, shockproof, electric insulation, heat resistant, cold resistant, solvent resistance and other characteristics, widely used in thermal barrier of boxes of refrigerators, freezers, cold storage, refrigerated trucks, such as insulation, buildings and storage tanks and pipe heat preservation material, a small amount is used for non adiabatic occasions, such as imitation wood, packaging materials, etc.
Generally speaking, the low density polyurethane hard foam is mainly used as insulation material, and the high density polyurethane hard foam can be used as structural material (imitation wood).
The proportion of flame-retardant rigid polyurethane foam in rigid polyurethane foam plastics is increasing year by year, and it has increased to 70% - 80 %. Rigid polyurethane foam plastics flame retardants were developed rapidly and the specific requirements for rigid polyurethane foam plastics flame retardants is: after use is not easy to fire, flame propagation resistance is small, smoke, at least when burning generating less harmful gas.
Rigid polyurethane foamed plastic flame retardant should meet the following conditions:
1. Little influence on the properties of foam plastics;
2. Small amount of addition and good effect;
3. The flame retardant effect does not decrease with time;
4. Non-toxic or toxic to ensure safe use;
5. Good mixing with raw materials;
6. Liquid flame retardant viscosity cannot be excessive;
7. Non-corrosive equipment;
It's cheap.
Polyurethane hard foam is generally at room temperature foaming, the forming process is relatively simple. According to the construction mechanization degree can be divided into manual foaming and mechanical foaming; The pressure can be divided into high pressure foaming and low pressure foaming. The molding can be divided into pouring and spraying foaming.
In recent decades, the production of polyurethane hard foam has grown at a phenomenal rate, largely because of its striking features.
(1) polyurethane rigid foam has the advantages of light weight, high strength and stable dimension.
, according to the different requirements for the purpose of the polyurethane rigid foam, the foam is usually lower than the density of 150 kg/m [sup] 3 [/ sup], using hard foam density and even in the range of 8 kg/m [sup] 3 [/ sup], and the density of general rigid insulation materials used for about 28 ~ 60 kg/m [sup] 3 [/ sup].
Tris(2-chloroisopropyl)Phosphate(TCPP)
Tris(2-chloroisopropyl)Phosphate(Flame retardant TCPP) is a colorless or yellowish oily liquid. It is soluble in benzene, alcohol, carbon tetrachloride and other organic solvents, but insoluble in water and aliphatic hydrocarbons. Its relative density is 1.27-1.31, refractive index is 1.4916 ( 21.5 ), viscosity is 58mm2 / S, chlorine content is 32.8%, and phosphorus content is 9.5%. As the molecule contains phosphorus and chlorine element simultaneously, its flame retardant properties is significant, as well as the plasticization, damp-proof, antistatic effects and so on. Tris(2-chloropropyl) phosphate (TCPP) is an additive flame retardant.
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.
In Japan, the standard of polyurethane hard foams for adiabatic USES is divided into three categories. Low density polyurethane hard bubble density 25 ~ 30kg/m [sup]3[/sup] medium density polyurethane hard bubble density 40 ~ 60kg/m [sup]3[/sup]; High density polyurethane hard foam density is greater than 150kg/m [sup].
The mechanical strength of polyurethane hard foam is good. In low temperature, the strength not only will not decrease, but also improve, the dimensional stability of them at low temperature is good, not shrinkage. Under the condition of temperature is 20 ℃ - for 24 h, rigid foam linear change rate is less than 1%.
(2) the adiabatic performance of polyurethane rigid foam plastics is superior.
Polyurethane rigid foam obturator structure content is greater than 90%, in gas bubble hole has a very low heat conduction coefficient, therefore, with polyurethane hard for anything adiabatic profiles, even in the case of very thin, also can obtain very good insulation effect, is currently building materials in the thermal insulation performance of the best varieties.
(3) strong adhesive force.
Polyurethane hard foam metals such as steel, aluminum, stainless steel, for wood, concrete, asbestos, asphalt, paper and other than the polyethylene,
polypropylene and ptfe most plastic materials, has good bonding strength, suitable for preparation of coated surface of adiabatic material shaped materials and electrical equipment insulation blanket potting, can meet the needs of the industrialized mass production.
(4) good aging performance and long insulation life. Practical application shows that the outer skin is not damaged, the long-term use of under - 190 ~ 70 ℃, life can be up to 14 years. It shows superior anti-aging performance. The use of non - permeable decorative material, in the long use of the process, can always maintain excellent thermal insulation effect.
(5) the reaction mixture has good fluidity and can smoothly fill the cavity or chamber of complex shapes. Polyurethane hard - made composite materials are lightweight, easy to assemble, and won't attract insects or rodents to chew and durable.
(6) polyurethane hard foam production material is highly reactive and can be rapidly solidified, which can achieve high efficiency and mass production in the factory.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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