Synergistic flame retardant technology of flame retardant

Synergistic flame retardant technology of flame retardant

Flame retardant synergistic flame retardant technology is used at the same time more than two kinds of flame retardants, or more than two kinds of application of the flame retardant mechanism to develop varieties of flame retardant or dosage form, which can overcome the single flame retardant of corresponding faults, make its performance is complementary, to reduce the dosage of flame retardant, improve the flame retardant properties, processing performance and physical and mechanical properties, etc.

At present, the synergistic flame retardant technology of many flame retardants is phosphorus-halide synergistic, phosphorus-nitrogen synergistic and bromo-inorganic synergistic.

Bromine-containing polymer flame retardant low volatile, scattered good intermiscibility, not easy migration and frosting, good thermal stability and low toxicity etc, which can effectively overcome the low molecular bromine flame retardant smoke volume is high, produce poisonous gas and corrosive gas, reducing the flame retardant base material uv stability problems.

Organophosphorus flame retardant is also a very important class of organic flame retardant. The most important flame retardant in the flame retardant of organophosphorus is phosphate retardant. Another development direction of organophosphorus flame retardant is expansion flame retardant. It is the application of phosphor-nitrogen synergistic, non-flammable gas foaming, polyols and ester dehydrated carbonization to form flame retardant carbonation layer and other flame retardant mechanism. The expansion type flame retardant with the main material of the APP has become a hot spot in research and development.

As people to the attention of the combustible material flame retardant, flame retardant synergistic flame retardant technology has been with the widely application of the high polymer material and got great development, and the people environmental protection consciousness enhancement, new varieties of flame retardant appear constantly, some emerging technology is constantly applied to the research and production of flame retardant. In the future, the development trend of flame retardants will be a new flame retardant system that is non-toxic, halogen free, low smoke, minimal environmental impact and has the best flame retardant properties. It can be predicted that flame retardants will have a booming future worldwide.

MorasiG, etc., the combination system of polydimethyl siloxane and ammonium polyphosphate, pentaerythritol and zinc borate, used for polypropylene flame retardant.



Tris(2-chloroisopropyl)Phosphate(TCPP)

The production process of flame retardant TCPP with the following steps:

(1) to three phosphorus oxychloride and epichlorohydrin by phosphoric acid, three in catalysis of AlCl3 (2, 3- two Lv Bingji) ester mixture.

(2) added to the mixed solutions of alkali, alkali washing to neutral, static stratified, removing water; reservoir water again after the static stratified, removing water, reservoir after distillation liquid phosphoric acid three (2, 3- two Lv Bingji) ester, and the nitrogen gas purification. This process has the advantages of simple preparation process, to produce phosphoric acid three (2, 3- two Lv Bingji) ester as compared with the existing production process of high purity, its quality detection results were better than the existing technology in the production process to produce phosphoric acid three (2, 3- two chloropropyl) ester.

Process the above description of the product, such as the flame retardant TCPP production technology to further understand please contact us.

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.


The flame retardant technology has been applied to the flame retardant technology of silicone resin. (2) high molecular weight silicone oil and organic metal compound and metal compound; (3) silicone rubber and organic metal compound, gas phase and white carbon black; (4) silicon gel and potassium carbonate; (5) siloxane graft polymer with red phosphorus; (6) the method of introducing silicon atoms into molecules by grafting.

The co-effect system consisting of 5 parts of silicone rubber, 3 organic metal compounds and 30 components of the gas phase method is used for the flame retarding of polyethylene (PE), and the oxygen index (OI) is about 30.

Silicone, oil heavy oil (or asphalt) and polycarbonate (such as PC/ABS) or its alloy composition, is flame retardant performance of high polymer material, don't drop during burning, does not produce harmful gas. It can be seen from table 3 that the combination of methyl silicone resin or methyl phenyl silicate and asphalt produces synergistic flame retardant effect.

Applied to the aromatic PC, ABS, PS and other resin or its alloy of silicon resin, its molecular structure (M, D, T, Q the proportion of four structural unit), as well as the size of the molecular weight, are important influence on the properties of flame retardant materials. Therefore, through the molecular design of science, it is the key to obtain the high performance silicone flame retardant materials to ensure its moderate solubility and suitable migration and surface enrichment.

Organic silicon compounds are both flame retardant (synergistic) agents and a good processing aid and dispersant. Applied to the EVA2Mg (OH) 2 flame retardant system, not only can improve the dispersion of Mg (OH) 2 in EVA resin (reduce the mechanical properties of flame retardant materials less), but also can improve the processing performance, but also make the blending system of the flame retardant performance has improved significantly.

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