Phosphor polymer flame retardant

Phosphor polymer flame retardant

To study the new rich aromatic structure of polymer containing phosphorus flame retardant poly (phenyl phosphate (9, 10 - dihydro - 9 - oxygen mixed - 10 - acid impurity fe) phenylene ester synthesis and epoxy resin (ER), flame retardant properties of unsaturated polyester resin (USPE).

The phosphop-containing polymer flame retardants were obtained by melting condensation by 2- (6-ox-6 oxyphosphine) 1, 4- hydroquinone and benzoyl dichloride. With phosphorus content is 13.8% of poly phenyl phosphate (9, 10 - dihydro - 9 - oxygen mixed - 10 - acid impurity fe) phenylene ester added to the epoxy resin, unsaturated resin, and the results show that the polymer of epoxy resin, unsaturated resin has good flame retardant performance, content is only 2% when the phosphorus content is only 0.28% oxygen index the LOI can reach 28, flame retardant UL - 94 can achieve VO level.

In recent decades, with the development of science and technology, plastic, rubber, synthetic fiber, such as polymer materials in aerospace engineering, transportation, electronic appliances and daily necessities, and many other fields has been widely used, but most of the polymer with flammable, combustible, some still have a lot of smoke and toxic gases, cause harm to the environment, caused huge losses of social wealth, pose a huge threat to people's life safety.

In the fire event, a large proportion of the polymer materials catch fire. Therefore, the development of the flame retardant for polymer materials, especially the environment-friendly halogen free flame retardant is a hot research hotspot for the flame retardation of high polymer materials.

After entering the 1990 s, flame retardant technology is undergoing a new stage of development, in addition to the need for flame retardant flame propagation speed, low smoke, low toxicity and so on the basic requirements, also need to satisfy the high efficiency, little content, the introduction of the flame retardant will not lead to high polymer material original performance deterioration of excessive demand. Therefore, in recent years, high efficiency, low smoke, low toxicity, dustless or less dust constitute the key research subject of flame retardant materials, and the main direction of development of flame retardants in the world.



Cresyl Diphenyl Phosphate(CDP) The Production Process

(1) Mixing M-Cresol And Molten Phenol, And Then Adding Calcium And Magnesium Catalyst; When The Temperature Is Less Than 50 ℃, Adding Phosphorus Oxychloride, The Mixture; The Mixture And Then Pressure Row Acid, Negative Pressure Row Acid, The Negative Pressure Distillation Separation, Vacuum System Vacuum ≥ 0.0983Mpa, Collecting The Temperature Of The Fraction At 290 ~ 310 ℃ When The Resulting Fractions, Measured The Acid Value ≤ 0.15mgKOH / G, That Is, Toluene Diphenyl Phosphate. The Production Process Is Simple And The Cost Is Low. The Prepared Toluene Diphenyl Phosphate (Flame Retardant CDP) Conforms To The Standard Of Toluene Diphenyl Phosphate (Flame Retardant CDP), The Yield Is Over 88%, Plasticizer, And Has Good Compatibility, Electrical Insulation, Good Hydrolytic Stability, High Plasticizing Efficiency, Good Wear Resistance Of The Products; Can Be Used In Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Alcohol Shrink Aldehydes, Nitrocellulose, Cellulose Acetate, Butyl Acetate Cellulose, Cellulose Resins, Natural And Synthetic Rubbers, And The Like.

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.


In this paper, a kind of high phosphorus content without halogen added flame retardant was synthesized and the flame retardant properties of this new flame retardant added to epoxy and unsaturated lipid were discussed.

The main raw materials: 9, 10- dihydro-9 oxygen-9, DOPO and phenylphosphine dichloride, industrial products, and purified before use; For the benzene quinone, the analytical pure, chemical reagent plant products; E - 44 pale yellow liquid of epoxy resin, epoxy value 0.41 ~ 0.41 mol / 100 g, softening point 12 ~ 20 ℃; Unsaturated polyester 191, changzhou building materials 253 factory, light yellow transparent liquid, acid value KOH: 28 ~ 36mg/g, viscosity 0.25 ~ 0.45Pa? S.

Synthesis of flame retardants. Provides methods to synthesize ODOPB. The synthesis of PSPPP was carried out by PDPPP. In the 250mL reaction bottle containing nitrogen import and export and agitator, phosphine was 0.19 mol, ODOPB 0.185mol and catalyst.

Nitrogen, heating temperature, to maintain the temperature of 160 ℃ 1.5 h, then temperature to 220 ℃, continue to 2 h. The residual HCl gas in the system is removed by vacuum. Is the product of a pale yellow, number average molecular weight: 3000 ~ 8900, melting point is 195 ~ 204 ℃.

The flame retardants synthesized by the representation of POPPP are analyzed by ft-ir170sx infrared spectrometer and KBr press. The content of C, O and H was determined by the Heraeus elemental analyzer, and the P content was processed by Schoniger combustion method, and the icp-aes was detected by inductively coupled plasma atomic emission spectra (icp-aes). Mass spectrometry was performed with Finnigan-4570 low resolution GC/MS. The 1h-nmr spectrum of the sample was tested with the Bruker amx-300 NMR.

Flame retardant samples preparation of epoxy resin (ER) E44 the preparation of flame retardant samples: PDPPP and epoxy resin under magnetic stirring in proportion to add 500 ml cup, higher heating temperature 40 ℃ to 0.5 h, until completely dissolved flame retardants in epoxy resin. To join as a curing agent 651, polyamide, first heat for 2 h under 100 ℃, and then placed 48 h at room temperature. The obtained solid has been cut to the test spline.

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