News Details
PVA base phosphate flame retardant
2017-10-20 19:29:40
PVA base phosphate flame retardant
PVA-POH was synthesized by polyvinyl alcohol and phosphoric acid, and the synthesis process was optimized: m(H3PO4)/m(PVA)= 2. 0, 21% catalyst CO (NH2), 100 ℃, 120 min. The structure was characterized by ft-ir, NMR and elemental analysis.
The thermal properties of TGA-DSC were analyzed. The results showed that the synthetic route of the PVA base phosphate flame retardants was simple, the flame retardant performance was excellent, and the LOI value of the finished polyester fabric was 26 after 10 washing. 2%.
High polymer materials are widely used, but many organic polymer materials can cause fire hazards. Therefore, all countries in the world are working on various flame retardants and flame retardant materials. Phosphor flame retardant has the characteristics of high flame retardancy, low smoke, low toxicity and no corrosive gas. Its flame retardant effect is related to the phosphorus content of flame retardant.
Phosphorus flame retardants, especially organophosphorus flame retardants, occupy an important position in all kinds of flame retardants. The disadvantages of small molecular phosphorus flame retardants, such as high volatility, easy migration, poor heat resistance and poor material mechanical properties affect the flame retardant effect, and also restrict its application range. Most of the organic polymer containing phosphorus flame retardants have low smoke, low toxicity, good thermal stability, flame retardant performance is good, it has good compatibility with polymer substrate, migration, volatile and durable flame retardant effect, has become the hot topics in the study of flame retardants.
PVA in high temperature is very beneficial for molecular dehydration to produce olefin and aromatic rings, and occurs in carbon reaction. Therefore, PVA is a good carbon agent in expansive flame retardant. Based on PVA and phosphoric acid as raw material, urea as catalyst, synthesis of the PVA base phosphate ester flame retardant (PVA - POH), study the synthetic process conditions, through infrared spectrum (FT IR), nuclear magnetic resonance (NMR), element analysis characterization of its structure, its thermal performance by TGA and DSC analysis.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Fabric of test materials: polyester cotton blended machine fabric 18.2t x 18.2 t, 220 root /10cm x 9 phase 140 root /10cm (sichuan cotton factory).
Reagent: polyvinyl alcohol (PVA)20-99 (industrial pure), phosphoric acid, urea, anhydrous ethanol (all analyzed pure), penetrant JFC
The synthesis of flame retardant PVA - POH: will join the rest of the 250 ml three bottles of 5 gpva, stir in 20 ml distilled water wetting 15 min, then add 10-30 ml85 % of phosphoric acid, after stirring at room temperature for 30 min, slow warming to PVA completely dissolved into a colorless transparent solution, adding a certain amount of urea as catalyst, stir well, after heating to proper temperature reaction time, getting white or pale yellow transparent solution; Add 50 ml anhydrous ethanol precipitation, dissolving precipitation 3 times repeatedly, decompression filtration, at 60 ℃ drying in vacuum oven for 24 h, white or light yellow product PVA - POH.
Pva-poh texture characterization: infrared spectra (ft-ir) : test with nicoletft-ir6700 infrared spectrometer, KBr press plate; Nuclear magnetic resonance (NMR): test 1H -, 31P- and 13c-nmr spectra with VarianunityInova-400 NMR, with dmso-d6 as the solvent and the internal standard as tetramethylsilane (TMS); Elemental analysis (EA): determination of C, H and O content in CarloErba1106CHN element analyzer (Italy); Phosphorus content: determination of ammonium vanadium molybdate (GB/t6437-2002).
Flame retardant finishing process: two dip two rolling (flame retardant PVA - POH300g/L, 100 g/L, urea phosphate 15 g/L, penetrant JFC10g/L, mangle rate 70% ~ 80%) and preliminary drying (90 ℃, 5 min) - > curing (165 ℃, 3 min) to soaping, washing and drying.
Thermal analysis (TGA and DSC) : use synchronous thermal analyzer STA449CJupiter NETZSCH (Germany), 45 ml/min, nitrogen flow from aluminium crucible said in 5 ~ 7 mg sample, with 10 ℃ / min from 40 ℃ temperature to 590 ℃; Flame retardant performance: the XZT-100 oxygen index is used to test the test oxygen index method of the textile combustion performance test by GB/t5454-1997.
As the amount of phosphoric acid increased, the phosphorus content increased significantly, but when m(H3PO4)/m(PVA)> 2. At 0, the increase degree is slowed down; > 2. After 25, the rate of production decreased, probably because the higher the phosphate consumption, the more dehydration in the molecule during the reaction. The higher the phosphoric acid content, the color of flame retardant changed from white to pale yellow, which limited its application scope. Select m (H3PO4)/m (PVA) = 2. 0 is better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
PVA-POH was synthesized by polyvinyl alcohol and phosphoric acid, and the synthesis process was optimized: m(H3PO4)/m(PVA)= 2. 0, 21% catalyst CO (NH2), 100 ℃, 120 min. The structure was characterized by ft-ir, NMR and elemental analysis.
The thermal properties of TGA-DSC were analyzed. The results showed that the synthetic route of the PVA base phosphate flame retardants was simple, the flame retardant performance was excellent, and the LOI value of the finished polyester fabric was 26 after 10 washing. 2%.
High polymer materials are widely used, but many organic polymer materials can cause fire hazards. Therefore, all countries in the world are working on various flame retardants and flame retardant materials. Phosphor flame retardant has the characteristics of high flame retardancy, low smoke, low toxicity and no corrosive gas. Its flame retardant effect is related to the phosphorus content of flame retardant.
Phosphorus flame retardants, especially organophosphorus flame retardants, occupy an important position in all kinds of flame retardants. The disadvantages of small molecular phosphorus flame retardants, such as high volatility, easy migration, poor heat resistance and poor material mechanical properties affect the flame retardant effect, and also restrict its application range. Most of the organic polymer containing phosphorus flame retardants have low smoke, low toxicity, good thermal stability, flame retardant performance is good, it has good compatibility with polymer substrate, migration, volatile and durable flame retardant effect, has become the hot topics in the study of flame retardants.
PVA in high temperature is very beneficial for molecular dehydration to produce olefin and aromatic rings, and occurs in carbon reaction. Therefore, PVA is a good carbon agent in expansive flame retardant. Based on PVA and phosphoric acid as raw material, urea as catalyst, synthesis of the PVA base phosphate ester flame retardant (PVA - POH), study the synthetic process conditions, through infrared spectrum (FT IR), nuclear magnetic resonance (NMR), element analysis characterization of its structure, its thermal performance by TGA and DSC analysis.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
Fabric of test materials: polyester cotton blended machine fabric 18.2t x 18.2 t, 220 root /10cm x 9 phase 140 root /10cm (sichuan cotton factory).
Reagent: polyvinyl alcohol (PVA)20-99 (industrial pure), phosphoric acid, urea, anhydrous ethanol (all analyzed pure), penetrant JFC
The synthesis of flame retardant PVA - POH: will join the rest of the 250 ml three bottles of 5 gpva, stir in 20 ml distilled water wetting 15 min, then add 10-30 ml85 % of phosphoric acid, after stirring at room temperature for 30 min, slow warming to PVA completely dissolved into a colorless transparent solution, adding a certain amount of urea as catalyst, stir well, after heating to proper temperature reaction time, getting white or pale yellow transparent solution; Add 50 ml anhydrous ethanol precipitation, dissolving precipitation 3 times repeatedly, decompression filtration, at 60 ℃ drying in vacuum oven for 24 h, white or light yellow product PVA - POH.
Pva-poh texture characterization: infrared spectra (ft-ir) : test with nicoletft-ir6700 infrared spectrometer, KBr press plate; Nuclear magnetic resonance (NMR): test 1H -, 31P- and 13c-nmr spectra with VarianunityInova-400 NMR, with dmso-d6 as the solvent and the internal standard as tetramethylsilane (TMS); Elemental analysis (EA): determination of C, H and O content in CarloErba1106CHN element analyzer (Italy); Phosphorus content: determination of ammonium vanadium molybdate (GB/t6437-2002).
Flame retardant finishing process: two dip two rolling (flame retardant PVA - POH300g/L, 100 g/L, urea phosphate 15 g/L, penetrant JFC10g/L, mangle rate 70% ~ 80%) and preliminary drying (90 ℃, 5 min) - > curing (165 ℃, 3 min) to soaping, washing and drying.
Thermal analysis (TGA and DSC) : use synchronous thermal analyzer STA449CJupiter NETZSCH (Germany), 45 ml/min, nitrogen flow from aluminium crucible said in 5 ~ 7 mg sample, with 10 ℃ / min from 40 ℃ temperature to 590 ℃; Flame retardant performance: the XZT-100 oxygen index is used to test the test oxygen index method of the textile combustion performance test by GB/t5454-1997.
As the amount of phosphoric acid increased, the phosphorus content increased significantly, but when m(H3PO4)/m(PVA)> 2. At 0, the increase degree is slowed down; > 2. After 25, the rate of production decreased, probably because the higher the phosphate consumption, the more dehydration in the molecule during the reaction. The higher the phosphoric acid content, the color of flame retardant changed from white to pale yellow, which limited its application scope. Select m (H3PO4)/m (PVA) = 2. 0 is better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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