A kind of halogen-free flame retardant and polymer material using the halogen-free flame retardant

A technology of flame-retardant polymers and polymer materials, applied in the field of halogen-free flame retardants and polymer materials using the halogen-free flame retardants, can solve the problems of low thermal stability, narrow application range, and reduced processing and physical Performance and other issues

Active Publication Date: 2019-07-09
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] According to one aspect of the present application, a kind of halogen-free flame retardant is provided, to overcome the shortcoming that dialkyl phosphinate is low to the flame retardant efficiency of engineering plastics, and the disadvantage of dialkyl phosphinate synergist in the prior art Low thermal stability, poor flame retardant efficiency, narrow application range, and disadvantages of reduced processing and physical properties

Method used

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  • A kind of halogen-free flame retardant and polymer material using the halogen-free flame retardant
  • A kind of halogen-free flame retardant and polymer material using the halogen-free flame retardant
  • A kind of halogen-free flame retardant and polymer material using the halogen-free flame retardant

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Experimental program
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Effect test

Embodiment 1

[0085] The synthesis of two (2,4-di-tert-butylphenyl) pentaerythritol diphosphates of embodiment 1

[0086] Dissolve 60g (0.099mol) of bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite in 550g of toluene, stir at room temperature until completely dissolved, then cool down to 10°C, and add 67.5g of it dropwise within 30min (0.595mol) hydrogen peroxide (30% mass fraction), the system was raised to room temperature after dripping, and the reaction was continued for 7.5h. Rotary evaporation, washing with 100 g of isopropanol and 40 g of acetone, suction filtration, washing with water, and drying to obtain 54 g of bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphate, with a yield of 86%.

[0087] 31 P-NMR (85%H 3 PO 4 = 0 ppm): -13.5 ppm.

Embodiment 2

[0089] Mix polyester PBT, antioxidant 626, DePAl-1 and compound antioxidant in a weight ratio of 83.6:1:15:0.4 in an internal mixer with a rotation speed of 50 rpm, and set the temperature at 260°C After 5 minutes, take it out to cool and dry. Then fill it into a mold, preheat it in a flat vulcanizing machine at 260°C for 10 minutes, hold the pressure at 10MPa for 5 minutes, and then cold press it. Cut samples and test after cooling down. The flame retardancy level of the 1.6mm sample is UL94 V-0.

Embodiment 3

[0091] Mix polyester PBT, antioxidant 626, DePAl-1 and compound antioxidant in a weight ratio of 83.6:2:14:0.4 in an internal mixer with a rotation speed of 50 rpm, and set the temperature at 260°C After 5 minutes, take it out to cool and dry. Then fill it into a mold, preheat it in a flat vulcanizing machine at 260°C for 10 minutes, hold the pressure at 10MPa for 5 minutes, and then cold press it. Cut samples and test after cooling down. The flame retardancy level of the 1.6mm sample is UL94 V-0.

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Abstract

The invention discloses a halogen-free flame retardant. The halogen-free flame retardant is characterized by comprising components A and components B; the components A selectively comprise at least one type of compounds in chemical formulas shown as a formula I and compounds in chemical formulas shown as a formula II; the components B selectively comprise at least one type of phosphite of pentaerythritol, organophosphate of pentaerythritol and carboxylate ester of pentaerythritol. The halogen-free flame retardant has the advantages that the shortcoming of low flame retardant efficiency of dialkyl phosphinates for engineering plastics can be overcome by the aid of the halogen-free flame retardant, and the problems of low heat stability, poor flame retardant efficiency, narrow application range and possible defects in the aspects of processing and physical properties of dialkyl phosphinates synergists in the prior art can be solved by the aid of the halogen-free flame retardant.

Description

technical field [0001] The application relates to a halogen-free flame retardant and a polymer material using the halogen-free flame retardant, belonging to the field of preparation of flame-retardant polymer materials. Background technique [0002] Flame-retardant engineering plastics, especially glass fiber reinforced polyamide, polyester PBT and high-temperature nylon, are widely used in the manufacture of electrical sockets, connectors, relays and other small electronic components in the electronics and electrical industry. Traditionally, the flame retardancy of engineering plastics is achieved by brominated flame retardants, but brominated flame retardants can produce strong carcinogenic dioxins when burned, and the hydrogen bromide produced at the same time can cause secondary pollution, so recently The use of brominated flame retardants has been gradually restricted in recent years. The flame retardancy of engineering plastics has thus turned to the use of halogen-fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L77/02C08L77/06C08K5/5313C08K5/134C08K5/526C08K5/103
CPCC08K5/103C08K5/1345C08K5/526C08K5/5313C08L2201/02C08L2201/22C08L67/02C08L77/02C08L77/06
Inventor 姚强曹微虹赵月英
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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