News Details
Polyformaldehyde flame retardant
2017-9-18 17:41:09
Polyformaldehyde flame retardant
Polyoxymethylene (POM) is a kind of integrated high performance engineering plastics, has a good corrosion resistance, oil resistance, chemical resistance, low water imbibition, wear-resistant self-lubrication, creep resistance and outstanding resistance to fatigue, is relatively close to the metal than strength in all plastic resin varieties. At present, in the whole engineering plastics industry, the annual output of formaldehyde is second only to nylon and polycarbonate, which ranks third, and has developed into one of the world's top five engineering plastics.
With the increasing of the application of polyformaldehyde, the performance requirements on all aspects are getting higher and higher. Due to the oxygen index of 14.9% polyformaldehyde, is one of the plastic in burning more easily, and a molten dripping phenomenon, can not meet the requirement of the performance of flame retardant, high field, greatly restrict the application range of polyformaldehyde, so need to apply polyformaldehyde flame retardants for flame retardant modification.
The thermal stability of polyformaldehyde is poor, the heat can be decomposed, and the decomposition products will accelerate the decomposition of formaldehyde. In the process of polyformaldehyde forming process, the requirement of formaldehyde flame retardant is very strict, and the decomposition of the small amount of polyformaldehyde flame retardant can cause a lot of decomposition of the polyformaldehyde materials. In addition, polyformaldehyde is a highly crystalline polymer with poor compatibility with other additives. With the increase of additive amount, its physical mechanical properties are greatly reduced, so it is very difficult to make the flame-retardant property.
The industrial developed countries in the world began to study the polyformaldehyde flame retardants and the flame retardant polyformaldehyde in the 1960s, the most active in the 1970s and 1980s. The study of flame retardant of pom in China started relatively late, in anhui province chemical industry research institute for national "five-year" research project "the research of the flame retardant poly formaldehyde" previously, the flame retardant at home and blank of polyformaldehyde.
Because of the relatively few flame retardant systems applicable to polyformaldehyde, and the addition of flame retardants is relatively simple, a large amount of added flame retardants can reduce their mechanical properties. Therefore, the preparation of excellent flame retardant polyformaldehyde is very difficult. This paper will introduce different flame retardant systems and flame retardants in different ways.
Cresyl Diphenyl Phosphate(CDP) Export Essential Information
Chinese Name: Toluene Diphenyl Phosphate, Flame Retardant CDP
English Name: Cresyl Diphenyl Phosphate
Traits: Light Yellow Transparent Liquid
Free Phenol: (0.1% Max)
Moisture% (0.1% Max)
Flash Point (Open Cup): (220Min)
Acid Value (MgKOH / G): (0.1MAX)
Relative Density (25 ℃): (1.195-1.212)
CAS No.:26444-49-5
Hazard Category: 6.1
HS: 29199000
Refund (%): 9%
Status Of Goods: Exports Of Category 6 Dangerous Goods.
Toluene Diphenyl Phosphate Flame Retardant CDP Raw Materials: Cresol, Phenol, Phosphorus Oxychloride.
Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet To Play With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
There are several major companies in the world, such as Du Pont and Celanese, Hoechst of the former west Germany, and Japan's xuecu industrial co., LTD., and Polyplastics. The study of flame retardant of pom in China started late, just at the experimental stage, has not put into production, and added directly to give priority to, according to different flame retardant system can be divided into the following categories.
Inorganic flame retardants have good thermal stability and low toxicity or non-toxic, does not produce corrosive gas, in the process of storing non-volatile, no precipitation, has the advantages of durable flame retardant effect, and the rich raw material sources, low price. In particular, inorganic flame retardants are becoming more and more important when the environmental safety and safety requirements of fire-retardant products are increasingly strict. At present, commercial inorganic flame retardants mainly have hydroxide, magnesium hydroxide, antimony trioxide, zinc phosphate, etc. Liu pengbo et al. chose Mg(OH)2 as the flame retardant of formaldehyde, and studied the effect of its effect on the flame retardant effect and mechanical properties of polyformaldehyde.
With the addition of Mg(OH)2 flame retardants, the flame retardant performance of polyformaldehyde was improved greatly. When the amount of Mg(OH)2 was 60%, the oxygen index increased from 15% to 40%, and the horizontal combustion speed decreased from 0.33mm/s to 0.31mm/s. However, the compatibility of formaldehyde and inorganic flame retardant Mg(OH)2 is poor, and the addition of flame retardants has reduced the mechanical properties of polyformaldehyde.
Feng Ding loose etc was studied in acetal copolymer with Al (OH) 3 / Mg (OH) 2, the results show that the filling 40% Al (OH) 3 / Mg (OH) 2 the burning rate is only half of the pure acetal copolymer, when the amount of Al (OH) 3 60% of acetal copolymer quality, product completely non-flammable; The flame retarding effect of Mg(OH)2 is worse than that of Al(OH) 3. After pretreatment of Al (OH)3 with aluminum coupling agent, it can obviously improve its mechanical properties without affecting its flame retardancy. Zinc stearate can obviously improve its fluidity. The two can obviously increase the strength and fluidity of the blends. The combustion characteristics of Al(OH)3 flame retardant polyurethane, which is produced by 36% of the polyoxymethylene, 60% of the Al(OH)3 and 4% aluminum acid ester coupling agent, were unlit in the 2s. The tensile strength is 18.2MPa and the notch impact strength is 4.0 kJ/m2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Polyoxymethylene (POM) is a kind of integrated high performance engineering plastics, has a good corrosion resistance, oil resistance, chemical resistance, low water imbibition, wear-resistant self-lubrication, creep resistance and outstanding resistance to fatigue, is relatively close to the metal than strength in all plastic resin varieties. At present, in the whole engineering plastics industry, the annual output of formaldehyde is second only to nylon and polycarbonate, which ranks third, and has developed into one of the world's top five engineering plastics.
With the increasing of the application of polyformaldehyde, the performance requirements on all aspects are getting higher and higher. Due to the oxygen index of 14.9% polyformaldehyde, is one of the plastic in burning more easily, and a molten dripping phenomenon, can not meet the requirement of the performance of flame retardant, high field, greatly restrict the application range of polyformaldehyde, so need to apply polyformaldehyde flame retardants for flame retardant modification.
The thermal stability of polyformaldehyde is poor, the heat can be decomposed, and the decomposition products will accelerate the decomposition of formaldehyde. In the process of polyformaldehyde forming process, the requirement of formaldehyde flame retardant is very strict, and the decomposition of the small amount of polyformaldehyde flame retardant can cause a lot of decomposition of the polyformaldehyde materials. In addition, polyformaldehyde is a highly crystalline polymer with poor compatibility with other additives. With the increase of additive amount, its physical mechanical properties are greatly reduced, so it is very difficult to make the flame-retardant property.
The industrial developed countries in the world began to study the polyformaldehyde flame retardants and the flame retardant polyformaldehyde in the 1960s, the most active in the 1970s and 1980s. The study of flame retardant of pom in China started relatively late, in anhui province chemical industry research institute for national "five-year" research project "the research of the flame retardant poly formaldehyde" previously, the flame retardant at home and blank of polyformaldehyde.
Because of the relatively few flame retardant systems applicable to polyformaldehyde, and the addition of flame retardants is relatively simple, a large amount of added flame retardants can reduce their mechanical properties. Therefore, the preparation of excellent flame retardant polyformaldehyde is very difficult. This paper will introduce different flame retardant systems and flame retardants in different ways.
Cresyl Diphenyl Phosphate(CDP) Export Essential Information
Chinese Name: Toluene Diphenyl Phosphate, Flame Retardant CDP
English Name: Cresyl Diphenyl Phosphate
Traits: Light Yellow Transparent Liquid
Free Phenol: (0.1% Max)
Moisture% (0.1% Max)
Flash Point (Open Cup): (220Min)
Acid Value (MgKOH / G): (0.1MAX)
Relative Density (25 ℃): (1.195-1.212)
CAS No.:26444-49-5
Hazard Category: 6.1
HS: 29199000
Refund (%): 9%
Status Of Goods: Exports Of Category 6 Dangerous Goods.
Toluene Diphenyl Phosphate Flame Retardant CDP Raw Materials: Cresol, Phenol, Phosphorus Oxychloride.
Net Weight 200KG / Galvanized Iron Drum (A Small Cabinet To Play With 16 Tons), 1000KG / IB Bucket (A Small Cabinet 18 Tons) Or 23 Tons ISOTANK.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
There are several major companies in the world, such as Du Pont and Celanese, Hoechst of the former west Germany, and Japan's xuecu industrial co., LTD., and Polyplastics. The study of flame retardant of pom in China started late, just at the experimental stage, has not put into production, and added directly to give priority to, according to different flame retardant system can be divided into the following categories.
Inorganic flame retardants have good thermal stability and low toxicity or non-toxic, does not produce corrosive gas, in the process of storing non-volatile, no precipitation, has the advantages of durable flame retardant effect, and the rich raw material sources, low price. In particular, inorganic flame retardants are becoming more and more important when the environmental safety and safety requirements of fire-retardant products are increasingly strict. At present, commercial inorganic flame retardants mainly have hydroxide, magnesium hydroxide, antimony trioxide, zinc phosphate, etc. Liu pengbo et al. chose Mg(OH)2 as the flame retardant of formaldehyde, and studied the effect of its effect on the flame retardant effect and mechanical properties of polyformaldehyde.
With the addition of Mg(OH)2 flame retardants, the flame retardant performance of polyformaldehyde was improved greatly. When the amount of Mg(OH)2 was 60%, the oxygen index increased from 15% to 40%, and the horizontal combustion speed decreased from 0.33mm/s to 0.31mm/s. However, the compatibility of formaldehyde and inorganic flame retardant Mg(OH)2 is poor, and the addition of flame retardants has reduced the mechanical properties of polyformaldehyde.
Feng Ding loose etc was studied in acetal copolymer with Al (OH) 3 / Mg (OH) 2, the results show that the filling 40% Al (OH) 3 / Mg (OH) 2 the burning rate is only half of the pure acetal copolymer, when the amount of Al (OH) 3 60% of acetal copolymer quality, product completely non-flammable; The flame retarding effect of Mg(OH)2 is worse than that of Al(OH) 3. After pretreatment of Al (OH)3 with aluminum coupling agent, it can obviously improve its mechanical properties without affecting its flame retardancy. Zinc stearate can obviously improve its fluidity. The two can obviously increase the strength and fluidity of the blends. The combustion characteristics of Al(OH)3 flame retardant polyurethane, which is produced by 36% of the polyoxymethylene, 60% of the Al(OH)3 and 4% aluminum acid ester coupling agent, were unlit in the 2s. The tensile strength is 18.2MPa and the notch impact strength is 4.0 kJ/m2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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