News Details
Polyureproof foam material flame retardant
2017-10-29 15:21:44
Polyureproof foam material flame retardant
Most of the polyurethane foam is to add vinegar contain halogen flame retardants for flame retardant, but its combustion would produce a lot of smoke, toxic substances, such as hydrogen halide adverse is considered to be environmentally friendly flame retardant materials. With the concept of fire safety and environmental protection deeply popular, halogen-free flame retardant has become a key field in the study of flame retardant of polyuredofoam material.
The study of flame retardant of polyuredofoam material found that a flame retardant could not achieve high efficiency and low pollution. Thus, two or more flame retardants are achieved. A new type of flame retardant agent was synthesized in the study of flame retardant of polyuredol foam material. And the main flame retardant, zinc oxide as the synergistic flame retardant.
The strength of hard foamed polyurethane cannot meet the requirements in various application fields, so it is very important to modify its mechanical properties. The method of implementation is particle enhancement, fiber enhancement, interwear network copolymers and blending.
Particle enhancement; It was modified by nano SiO2, CaCO3, organic montmorillonite SiC or TiO2 to enhance the plastic. These two or three combinations can also be used as modifiers. Nano-particle modification.
Fiber reinforcement; The short cut glass fiber (10, 20 mu m and 3mm in diameter) was used to enhance the modified hard foam polyaminocool plastic. With the increase of the amount of glass fiber, its compression strength and modulus increase correspondingly. It is also used to strengthen the modified hard foam polyaminocool plastic by means of non-alkali ground glass fiber.
Mutual wear network copolymer enhancement; Preparation of interpenetrating network copolymer has obvious mechanical properties, the method is phenolic resin (PF) and epoxy resin (ER) and other how isocyanate prepolymer and cool (crude MDI or PAPD blending, then polymer foam. The strength of the polymer increases with ER.
Polyurethane insulation materials have been developed rapidly in the field of construction and civil engineering, and have been applied to the thermal insulation of concrete DAMS in the field of water conservancy and hydropower engineering. Compared with the current polyurethane insulation material, spraying polyurethane hard foam has its own advantages and disadvantages. It has been modified to improve its shortcomings, so it has good application in water conservancy and hydropower engineering.
Triphenyl Phosphate (TPP)
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.
Polyurethane, short for PU, is the abbreviation of polyurethane. Because the number of functional groups, different materials used to prepare the body structure or linear structure of different molecular weight of polymer "when multiple alcohol and isocyanate vinegar are two faculties, linear structure of the polymer can be obtained; If one of them contains three or more faculties, the body is made of high polymer.
According to get together ammoniac cool macromolecular main chain structure, which is made of glass transition temperature (Tg) higher than the room temperature of rigid chain segments (hard) and glass transition temperature is lower than the room temperature of flexible chain segment (soft), in which more cool isocyanate react with small molecule chain extender constitute hard segment, polymer polyol composition of soft segment, "it is because of the molecular chain containing rigid chain segments and flexible chain segment at the same time, so the material can be used to the rigid material, can also be used for the flexible material, performance can be large range of regulation.
Foam plastic is refers to the preparation of resin as matrix into many little bubble inner holes of plastic products, light quality, adiabatic, sound insulation, shock absorption characteristics, is a new kind of polymer material, also known as porous plastic or microcellular plastics. Foam plastics are considered to be special composite plastics filled with gases, because they contain a lot of bubble holes and are filled with gas. Foam plastic is one of the most used plastics in plastics industry and occupies a very important position in the plastic industry.
Polyuredox foam plastic is a kind of foam plastic which is made from the preparation of polyisocyanate, polyol, foaming agent, catalyst and other additives. Polyurethane foam plastics vinegar is one of the foam is particularly important in the foaming materials, and get together ammoniac vinegar synthetic polymeric materials is one of the main varieties, with its more wide application range, the biggest characteristic of the material is the product of strong adaptability, can through the formulation of the material and the change of different synthetic performance different polyamine cool foam plastic products, in order to meet the different areas of application.
Cool rigid polyurethane foam plastics, hereinafter referred to as hard foam polyurethane rigid cool or get together ammoniac vinegar or hard PU, is refers to under certain load, no deformation takes place, but when the load is too big, after deformation, will not return to its original shape of polyurethane foam vinegar.
There are many methods for the classification of polyurethane foam, which can be divided into polyether, polycool, castor oil type polyurethane foamed plastic in accordance with the different types of polyols used. The application range can be divided into soft, hard, semi-rigid polyurehydrate foam and special polyuredofoam plastics.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Most of the polyurethane foam is to add vinegar contain halogen flame retardants for flame retardant, but its combustion would produce a lot of smoke, toxic substances, such as hydrogen halide adverse is considered to be environmentally friendly flame retardant materials. With the concept of fire safety and environmental protection deeply popular, halogen-free flame retardant has become a key field in the study of flame retardant of polyuredofoam material.
The study of flame retardant of polyuredofoam material found that a flame retardant could not achieve high efficiency and low pollution. Thus, two or more flame retardants are achieved. A new type of flame retardant agent was synthesized in the study of flame retardant of polyuredol foam material. And the main flame retardant, zinc oxide as the synergistic flame retardant.
The strength of hard foamed polyurethane cannot meet the requirements in various application fields, so it is very important to modify its mechanical properties. The method of implementation is particle enhancement, fiber enhancement, interwear network copolymers and blending.
Particle enhancement; It was modified by nano SiO2, CaCO3, organic montmorillonite SiC or TiO2 to enhance the plastic. These two or three combinations can also be used as modifiers. Nano-particle modification.
Fiber reinforcement; The short cut glass fiber (10, 20 mu m and 3mm in diameter) was used to enhance the modified hard foam polyaminocool plastic. With the increase of the amount of glass fiber, its compression strength and modulus increase correspondingly. It is also used to strengthen the modified hard foam polyaminocool plastic by means of non-alkali ground glass fiber.
Mutual wear network copolymer enhancement; Preparation of interpenetrating network copolymer has obvious mechanical properties, the method is phenolic resin (PF) and epoxy resin (ER) and other how isocyanate prepolymer and cool (crude MDI or PAPD blending, then polymer foam. The strength of the polymer increases with ER.
Polyurethane insulation materials have been developed rapidly in the field of construction and civil engineering, and have been applied to the thermal insulation of concrete DAMS in the field of water conservancy and hydropower engineering. Compared with the current polyurethane insulation material, spraying polyurethane hard foam has its own advantages and disadvantages. It has been modified to improve its shortcomings, so it has good application in water conservancy and hydropower engineering.
Triphenyl Phosphate (TPP)
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.
Polyurethane, short for PU, is the abbreviation of polyurethane. Because the number of functional groups, different materials used to prepare the body structure or linear structure of different molecular weight of polymer "when multiple alcohol and isocyanate vinegar are two faculties, linear structure of the polymer can be obtained; If one of them contains three or more faculties, the body is made of high polymer.
According to get together ammoniac cool macromolecular main chain structure, which is made of glass transition temperature (Tg) higher than the room temperature of rigid chain segments (hard) and glass transition temperature is lower than the room temperature of flexible chain segment (soft), in which more cool isocyanate react with small molecule chain extender constitute hard segment, polymer polyol composition of soft segment, "it is because of the molecular chain containing rigid chain segments and flexible chain segment at the same time, so the material can be used to the rigid material, can also be used for the flexible material, performance can be large range of regulation.
Foam plastic is refers to the preparation of resin as matrix into many little bubble inner holes of plastic products, light quality, adiabatic, sound insulation, shock absorption characteristics, is a new kind of polymer material, also known as porous plastic or microcellular plastics. Foam plastics are considered to be special composite plastics filled with gases, because they contain a lot of bubble holes and are filled with gas. Foam plastic is one of the most used plastics in plastics industry and occupies a very important position in the plastic industry.
Polyuredox foam plastic is a kind of foam plastic which is made from the preparation of polyisocyanate, polyol, foaming agent, catalyst and other additives. Polyurethane foam plastics vinegar is one of the foam is particularly important in the foaming materials, and get together ammoniac vinegar synthetic polymeric materials is one of the main varieties, with its more wide application range, the biggest characteristic of the material is the product of strong adaptability, can through the formulation of the material and the change of different synthetic performance different polyamine cool foam plastic products, in order to meet the different areas of application.
Cool rigid polyurethane foam plastics, hereinafter referred to as hard foam polyurethane rigid cool or get together ammoniac vinegar or hard PU, is refers to under certain load, no deformation takes place, but when the load is too big, after deformation, will not return to its original shape of polyurethane foam vinegar.
There are many methods for the classification of polyurethane foam, which can be divided into polyether, polycool, castor oil type polyurethane foamed plastic in accordance with the different types of polyols used. The application range can be divided into soft, hard, semi-rigid polyurehydrate foam and special polyuredofoam plastics.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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