News Details
Polymer flame retardant study
2017-9-14 23:15:26
Polymer flame retardant study
Most of the polymer to add containing 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, halogen-free flame retardant has become the focus of polymer flame retardant research.
Polymer flame retardant research has found that a flame retardant can not achieve high efficiency and low pollution. Thus, two or more flame retardants are achieved. A new type of expansive flame retardant was synthesized by phosphoric acid, pentaerythritol and melamine in polymer flame retardant. And it is the 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.
Tris (2-Chloroethyl) Phosphate use
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
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.
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.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Most of the polymer to add containing 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, halogen-free flame retardant has become the focus of polymer flame retardant research.
Polymer flame retardant research has found that a flame retardant can not achieve high efficiency and low pollution. Thus, two or more flame retardants are achieved. A new type of expansive flame retardant was synthesized by phosphoric acid, pentaerythritol and melamine in polymer flame retardant. And it is the 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.
Tris (2-Chloroethyl) Phosphate use
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
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.
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.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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