Domestic inorganic flame retardant

Domestic inorganic flame retardant

At present domestic inorganic flame retardants from hydrated alumina, antimony oxide, boron, copper to inorganic phosphorus and other varieties, these varieties mainly include magnesium hydroxide, alumina hydrate, antimony trioxide, colloid antimony trioxide, low hydrated zinc borate, zinc borate, zinc phosphate, dioxide key, three key, aluminum acid zinc oxide, calcium aluminate, poly phosphoric acid amine, sodium fluoboric acid, boric acid and red phosphorus, etc.

At present, the domestic flame retardant application is mainly organic flame retardant, but the proportion of domestic inorganic flame retardant is increasing year by year. When red phosphorus is used as flame retardant, the dosage is limited but the effect is obvious. The combustion of red phosphorus is an endothermic reaction and can form carbonation layer. But red phosphorus combustion value is big, the dosage too much, the heat released by the burning enough to meet the needs of its reaction, the plastic will be further combustion, thus cannot have the effect of flame retardant.

The dosage of red phosphorus as a plastic flame retardant is generally below. Metal hydride flame retardants require a large number of additions to have obvious flame retardant effects, but a large number of additions can lead to a decline in processing performance and mechanical properties. In order to satisfy the flame retardant effect and not affect the properties of plastic, the ultrafine and surface treatment technology of inorganic flame retardant has become the main point of the development of plastic flame retardant technology.

Domestic processing of surface modification of inorganic flame retardants, on the one hand, improve the weakness of plastic processing, on the other hand to improve the compatibility of flame retardants and plastic, which can not only improve the flame retardant plastics processing performance, and improve the mechanical properties and flame retardant properties. The surface treatment agent of inorganic flame retardant is mainly used in the series of couplets, silane coupling agents, aluminate vinegar, hard acetic acid and salt and other fatty acid salts.

The treatment effect of different surface treatment agent is different, so can make flame retardant plastic with different performance, therefore, to determine the appropriate method, choose the appropriate surface treatment and the optimum dosage, to improve the effect of surface treatment is very important. Flame retardant technology the development direction of the research direction of flame retardant technology research into carbon technology is a new flame retarding technology development direction, namely research thermoplastics in the condensed phase rather than in gas phase enhanced flame retardant flame retardant and smoke suppression carbon and then to achieve.

The general method is to promote a carbon reaction by adding additives or to induce crosslinking reactions to achieve the ultimate goal of blocking combustion. Researchers in such as silica gel, the potassium carbonate with a much lighter collection content such as poly (vinyl alcohol) and cellulose in reaction, reaction induced by the silicon oxide and crosslinking reaction can prevent burning. The anti-tobacco technology is a very important research topic at home and abroad.



Tris(2-butoxyethyl)phosphate(TBEP)Use

This Product Is Flame Retardant Plasticizer, Mainly Used For Polyurethane Rubber, Cellulose, Polyvinyl Alcohol And Other Flame Retardant And Plasticized, With Good Low Temperature Characteristics. Use Of Tris(2-butoxyethyl)phosphate(TBEP) For Flame Retardant Plasticizers And Processing Aids For Rubber, Cellulose And Resins. It Is Recommended For Use In Acrylonitrile-Based Rubbers, Cellulose Acetate, Epoxy Resins, Ethylcellulose, Polyvinyl Acetate And Thermoplastic And Thermoset Polyurethane. Phosphobutyrate (TBEP) Is Also Used As A Defoamer (Antifoam Agent) In Coatings, Detergents And Textiles. Has A Good Low Temperature Characteristics. This Product Can Also Be Used For Nitrocellulose, Ethyl Cellulose, Acrylic Plasticizer, Can Make Products With Transparency And Good Resistance To UV Performance.


Ammonium polyphosphate (APP) is a kind of good performance of the inorganic flame retardants, is currently the phosphorus-containing flame retardants are active area of research, its appearance is white powder, decomposition temperature > 256 ℃, polymerization degree between 1 o a 2 o is water-soluble, the degree of polymerization is greater than 2 o poorly soluble in water. APP is cheaper than organic flame retardant, low toxicity, good heat and stable, can be used alone or with other flame retardant compound for plastic flame retardant.

At high temperature, the APP quickly decomposes into ammonia and polyphosphate, which can dilute the oxygen concentration in the gas phase, thus preventing the combustion. Polyphosphoric acid is a strong dehydrating agent, which can make the polymer dehydrate carbonization to form a carbon layer and isolate the contact between the polymer and oxygen, and prevent the burning from the solid phase.

Borne by professor zhang ling, li and other east China university of science and technology of scientific research project "the development of inorganic nano composite polyolefin flame retardant cable material", not only to improve the flame retardant properties of polyolefin achieved important breakthrough, and provides the halogen-free flame retardant cable materials localization of innovation technology.

For a long time, PVC cable materials are widely used, and polyolefin limit oxygen index is low, flame retardant performance is poor, when it is heated or easy to burn in the process of discharge, restricted the polyolefin material used for cable. Zhang ling after two years of research, such as scientific and technical personnel to develop the preparation of inorganic nanometer technology of flame retardant, and polyolefin composite flame retardant achieve nano-scale dispersed in the matrix and the interface bonding between flame retardants and substrate, realize the flame retardant efficiency.

Thus developed inorganic nano flame retardant cable material relative to use micro cable material of the preparation of flame retardant, flame retardant agent not only reduced by 8%, and the flame retardant performance from 33.2% to 36.2%, and solved the microns of large amount of flame retardant filling processing difficulties and mechanics performance problems, provides the halogen-free flame retardant cable materials localization of innovation technology

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