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Phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition and preparation method thereof

A phosphate glass, flame retardant nylon technology, applied in the phosphate glass synergistic halogen-free flame retardant nylon 6 composition and its preparation, the field of modified nylon 6, can solve the problems of high dosage, reduced mechanical properties, etc. Good properties, enhanced flame retardant performance, good barrier effect

Active Publication Date: 2018-01-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a kind of aluminum diethylphosphinate in view of the existing defects such as high dosage of aluminum diethylphosphinate flame-retardant nylon 6, and strong acidity of phosphate glass, which is used to modify nylon 6 so that the mechanical properties are seriously reduced. The dosage is 9.0% to 11.0%, the flame retardant effect reaches UL-94V-0@3.2mm flame retardant grade, the flow rate and tensile strength have been greatly improved. Phosphate glass synergistic halogen-free flame retardant nylon 6 composition and its preparation method

Method used

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  • Phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition and preparation method thereof
  • Phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] (1) Weigh 40.41g of stannous oxide and 42.60g of phosphorus pentoxide (molar ratio 50:50) and put them in a ceramic mortar, mix them evenly with a pestle and transfer them into a 200ml alumina ceramic crucible, and then put them Put it into another 500ml crucible, place excess carbon powder around the 200ml crucible to maintain a reducing atmosphere, cover it and place it in a muffle furnace at a temperature of 500°C for 60 minutes, take it out immediately, and pour the glass melt on an iron plate while it is hot Quenched on the top, pulverized by a high-speed pulverizer to obtain phosphate glass powder, measured T g is 123°C;

[0033] (2) At room temperature, add 2 g of melamine to 200 g of ethanol, and mix ultrasonically for 20 minutes to obtain a dispersion; heat the dispersion to 78° C., add 15 g of phosphate glass powder prepared in step (1), and mix at this temperature and 260 r React for 12 hours at a stirring rate of 1 / min, filter while hot, wash with ethanol, an...

Embodiment 2

[0036] (1) Weigh 32.33g of stannous oxide and 51.12g of phosphorus pentoxide (molar ratio 40:60) and put them in a ceramic mortar, mix them evenly with a pestle and transfer them to a 200ml alumina ceramic crucible, and then put them Put it into another 500ml crucible, place excess carbon powder around the 200ml crucible to maintain a reducing atmosphere, cover it and place it in a muffle furnace at a temperature of 500°C for 60 minutes, take it out immediately, and pour the glass melt on an iron plate while it is hot Quenched on the top, pulverized by a high-speed pulverizer to obtain phosphate glass powder, measured T g 55°C;

[0037] (2) At room temperature, add 5 g of melamine to 300 g of ethanol, and ultrasonically mix for 30 minutes to obtain a dispersion; the dispersion is heated to 78° C., and 15 g of the phosphate glass powder prepared in step (1) is added. React at a stirring rate of 1 / min for 20 hours, filter while hot, wash with ethanol and dry in a vacuum oven at...

Embodiment 3

[0040] (1) Weigh 48.49g of stannous oxide and 34.08g of phosphorus pentoxide (molar ratio 60:40) and put them in a ceramic mortar, mix them evenly with a pestle and transfer them to a 200ml alumina ceramic crucible, and then put Put it into another 500ml crucible, place excess carbon powder around the 200ml crucible to maintain a reducing atmosphere, cover it and place it in a muffle furnace at a temperature of 500°C for 60 minutes, take it out immediately, and pour the glass melt on an iron plate while it is hot Quenched on the top, pulverized by a high-speed pulverizer to obtain phosphate glass powder, measured T g is 183°C;

[0041] (2) At room temperature, add 1 g of melamine to 200 g of ethanol, and mix ultrasonically for 10 minutes to obtain a dispersion; heat the dispersion to 78° C., add 15 g of phosphate glass powder prepared in step (1), and mix at this temperature and 280 r React at a stirring rate of 1 / min for 6 hours, filter while hot, wash with ethanol and dry i...

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Abstract

The invention discloses a phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition and a preparation method thereof. The phosphate-glass synergistic-effect halogen-free flame-retardant nylon 6 composition is prepared from, by weight, 88.4%-90.1% of nylon-6, 9.0%-11.0% of diethyl phosphonic acid aluminum, 0.3%-1.0% of melamine modified phosphate glass, 0.1%-0.3% of an antioxygen and 0.1%-0.2% of a lubricant. The phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition is good in flame retardant performance, dosage of diethyl phosphonic acidaluminum can be dropped by up to 30.8% when flame retardant rating reaches UL-94V-0@3.2mm and the total amount of a flame retardant is decreased by 26.9%; compared with a flame retardant system adopting diethyl phosphonic acid aluminum independently, the phosphate-glass synergistic-effect halogen-free flame-retardant nylon-6 composition system has the advantages that melt flow rate is by 14.5%, and tensile strength is increased by 9.0%.

Description

technical field [0001] The invention relates to modified nylon 6, in particular to a phosphate glass synergistic halogen-free flame-retardant nylon 6 composition and a preparation method thereof, belonging to the technical field of flame-retardant modification of polymer materials. Background technique [0002] Nylon 6 (polyamide 6, PA6) has good mechanical properties, thermal properties, self-lubricating properties, oil resistance, processing properties, etc., and is widely used in the fields of machinery, electronics and electrical industries. However, nylon 6 is flammable, and the burning process is accompanied by severe dripping, which is a great fire hazard. It is of great significance to endow nylon 6 with certain flame retardancy, especially halogen-free flame retardancy. At present, the halogen-free flame retardant that is more effective for nylon 6 is aluminum diethylphosphinate (AlPi). When its dosage is 13wt%, nylon 6 can pass the UL 94 V-0@3.2mm flame retardant g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K9/04C08K3/40C08K5/5313
Inventor 刘述梅朱睿哲赵建青
Owner SOUTH CHINA UNIV OF TECH
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