Flame-retardant smoke-suppressing thermoplastic polyurethane antistatic composite material and preparation method thereof

A plastic polyurethane and composite material technology, which is applied in the field of flame-retardant and smoke-suppressing thermoplastic polyurethane antistatic composite materials and its preparation, can solve the problems of low technical content and single function of antistatic materials, so as to improve mechanical properties and reduce secondary pollution , Improve the effect of smoke suppression performance

Active Publication Date: 2019-07-09
TAIZHOU BRT PLASTICS ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the chemical modification of the graphene surface, the flame retardant and smoke suppressant is grafted onto the graphene surface to obtain a new type of conductive agent with flame retardant and smoke suppressant functions, an

Method used

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  • Flame-retardant smoke-suppressing thermoplastic polyurethane antistatic composite material and preparation method thereof
  • Flame-retardant smoke-suppressing thermoplastic polyurethane antistatic composite material and preparation method thereof
  • Flame-retardant smoke-suppressing thermoplastic polyurethane antistatic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of functionalized graphene:

[0029] (1) Nitriding of graphene oxide (GO)

[0030] Add 0.5g GO to 100g DMF and sonicate at room temperature for 40 minutes, add 5g ethylenediamine and mix well, then transfer to a polytetrafluoroethylene-lined autoclave, seal and store in an oven, and heat to 120°C for 9 hours; Suction filtration was performed after the reaction, and the precipitate was washed three times with methanol, and then vacuum-filtered and dried to obtain the product graphene nitride (N-GO).

[0031] (2) Molybdate ionization modification

[0032] Add 0.5g N-GO powder to 500mL deionized water and ultrasonically disperse at room temperature for 3 hours to obtain a suspension, add 0.25g ammonium octamolybdate to the above suspension, and stir the reaction at room temperature for 5 hours, and extract the product Filter, and wash 3 times with deionized water to remove excess reagent, and obtain the product functionalized graphene.

Embodiment 2

[0034] Preparation of functionalized graphene:

[0035] (1) Nitriding of graphene oxide (GO)

[0036] Add 3g GO to 100g DMF, sonicate at room temperature for 40 minutes, add 60g p-phenylenediamine and mix evenly, then transfer to a polytetrafluoroethylene-lined autoclave, seal and store in an oven, and heat to 220°C for 3 hours; Suction filtration was performed after the reaction, and the precipitate was washed three times with methanol, and then vacuum-filtered and dried to obtain the product graphene nitride (N-GO).

[0037] (2) Molybdate ionization modification

[0038] Add 2g of N-GO powder to 100mL of deionized water and ultrasonically disperse at room temperature for 3 hours to obtain a suspension, add 4g of calcium molybdate to the above suspension, and stir the reaction at room temperature for 5 hours, filter the product with suction, and use Wash with deionized water 3 times to remove excess reagents to obtain the product functionalized graphene.

Embodiment 3

[0040] Preparation of functionalized graphene:

[0041](1) Nitriding of graphene oxide (GO)

[0042] Add 1.5g GO to 100g DMF, ultrasonicate for 40 minutes at room temperature, add 35g p-o-phenylenediamine, mix evenly, transfer to a polytetrafluoroethylene-lined autoclave, store in an oven sealed, and heat to 180°C for reaction 5 hour; Suction filtration is carried out after reaction finishes, precipitate is washed 3 times with methanol, then vacuum filtration is dried, obtains product graphene nitride (N-GO).

[0043] (2) Molybdate ionization modification

[0044] Add 1.5g of N-GO powder to 300mL of deionized water and ultrasonically disperse at room temperature for 3 hours to obtain a suspension, add 2.5g of zinc molybdate to the above suspension, and stir the reaction at room temperature for 5 hours, then filter the product with suction , and washed 3 times with deionized water to remove excess reagents to obtain the product functionalized graphene.

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Abstract

The invention discloses a flame-retardant smoke-suppressing thermoplastic polyurethane antistatic composite material and a preparation method thereof. The antistatic composite material is prepared from the following raw materials: TPU resin, tritolyl phosphate, melamine polyphosphate, functionalized graphene, an antioxidant 1076, an ultraviolet light absorber UV-24, conductive carbon black, stearic acid and 8-hydroxyquinolinone, wherein the surface of the functionalized graphene is doped with nitrogen and is modified by molybdate radicals chemically, thus good dispersity of the functionalizedgraphene in TPU under high addition amount can be realized, and meanwhile the smoke suppression performance and the mechanical property of the TPU antistatic composite material can be improved. The preparation method is simple in preparation process and low in production cost, and energy consumption and pollutant emission are reduced; and the composite material is suitable for popularization and application in industries such as electronic appliances, automobiles, buildings and precision instruments.

Description

technical field [0001] The invention belongs to the technical field of antistatic material preparation, and in particular relates to a flame-retardant and smoke-suppressing thermoplastic polyurethane antistatic composite material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane (TPU) resin is a common polymer material with good mechanical properties, processing properties and chemical resistance, and is widely used in electronic appliances, automobiles, machinery and other fields. The antistatic composite material obtained by TPU modification method, because it is easy to burn, has a large amount of smoke, and the limiting oxygen index is only 18%, which limits its application in actual production. How to improve the flame retardancy and smoke suppression performance of TPU antistatic composite materials has once become a hot spot that people pay attention to. At present, the main solution is to add halogen flame retardants. With th...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08K13/06C08K9/04C08K9/02C08K5/523C08K5/3492C08K3/04C08K5/09
CPCC08K3/04C08K5/09C08K5/34928C08K5/523C08K9/02C08K9/04C08K13/06C08K2201/001C08L2201/02C08L2201/04C08K3/042C08L75/04
Inventor 黄国波方国忠张旦琴金燕仙
Owner TAIZHOU BRT PLASTICS ELECTRONICS
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