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Halogen-free flame-retardant solvent-resistant PA12 material and preparation method thereof

A solvent-resistant and flame-retardant technology, applied in the field of halogen-free flame-retardant and solvent-resistant PA12 materials and its preparation

Active Publication Date: 2021-07-16
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Halogen-free flame-retardant solvent-resistant PA12 material and preparation method thereof
  • Halogen-free flame-retardant solvent-resistant PA12 material and preparation method thereof
  • Halogen-free flame-retardant solvent-resistant PA12 material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Prepare the ingredients according to the following recipe:

[0052]

[0053] Prepare PA12 material according to the following method:

[0054] (1) Prepare modified vermiculite:

[0055] Add 40g of vermiculite to 1200ml of hydrochloric acid, stir and reflux at 40°C for 18h, filter and wash the solid repeatedly until the supernatant has pH ≈ 7, and dry the solid in an oven at 90°C for 16h to obtain acidified vermiculite;

[0056] Take 50g of acidified vermiculite and 10g of toughening agent GR216 in 1800ml of toluene, heat and stir in a reflux device at 40°C for 5h, take out the reactant and wash it by centrifugation; take the centrifuge and wash it with acetone, toluene, and ethanol in sequence. Finally, it is washed with water, and the obtained product is dried in an oven at 90° C. to obtain modified vermiculite.

[0057] (2) Weigh 500g of L1000 and 2.5g of aziridine cross-linking agent respectively, place them in a high mixer at 60°C and mix for 3 minutes, then ad...

Embodiment 2

[0060] Prepare the ingredients according to the following recipe:

[0061]

[0062] Prepare PA12 material according to the following method:

[0063] (1) Prepare modified vermiculite:

[0064] Add 40g of vermiculite to 1200ml of hydrochloric acid, stir and reflux at 80°C for 10h, filter and wash the solid repeatedly until the supernatant has pH ≈ 7, and dry the solid in an oven at 100°C for 48h to obtain acidified vermiculite;

[0065] Take 60g of acidified vermiculite and 30g of toughening agent N416 in 4500ml of toluene, heat and stir in a reflux device at 60°C for 3h, take out the reactant and wash it by centrifugation; take the centrifuge and wash it with acetone, toluene, and ethanol in sequence, Finally, it is washed with water, and the obtained product is dried in an oven at 100° C. to obtain modified vermiculite.

[0066] (2) Weigh 800g of L2000 and 18g of aziridine cross-linking agent respectively, place them in a high mixer at 45°C and mix for 8 minutes, then ad...

Embodiment 3

[0069] Prepare the ingredients according to the following recipe:

[0070]

[0071] Prepare PA12 material according to the following method:

[0072] (1) Prepare modified vermiculite:

[0073] Add 40g of vermiculite to 1600ml of hydrochloric acid, stir and reflux at 50°C for 15h, filter and wash the solid repeatedly until the supernatant has pH ≈ 7, and dry the solid in an oven at 95°C for 24h to obtain acidified vermiculite;

[0074] Take 60g of acidified vermiculite and 20g of toughening agent N416 in 3200ml of toluene, heat and stir in a reflux device at 45°C for 6h, take out the reactant and wash it by centrifugation; take the centrifuge and wash it with acetone, toluene, and ethanol in sequence, Finally, it is washed with water, and the obtained product is dried in an oven at 95° C. to obtain modified vermiculite.

[0075] (2) Weigh 300g of L1000, 300g of L2000, and 3g of aziridine cross-linking agent, place them in a high mixer at 50°C and mix for 5 minutes, then ad...

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Abstract

The invention discloses a halogen-free flame-retardant solvent-resistant PA12 material and a preparation method thereof. The PA12 material is prepared from the following raw materials in parts by weight: 50 to 80 parts, preferably 60 to 70 parts of PA12, 0.5 to 3.5 parts, preferably 1 to 2 parts of an aziridine cross-linking agent, 10 to 18 parts, preferably 12 to 16 parts of an MCA flame retardant, 5 to 15 parts, preferably 8 to 14 parts of modified vermiculite and 0.5 to 1 part of an auxiliary agent. By introducing the aziridine cross-linking agent with three functional groups, layer-by-layer wrapping of the MCA flame retardant and the modified vermiculite on PA12 particles is realized, and the flame retardance and solvent resistance of the material are improved. In addition, the functionalized modified vermiculite not only enhances the compatibility and crosslinking property of the system, but also expands sharply when heated to coat PA12 liquid drops inside, so that the flame-retardant effect is achieved.

Description

technical field [0001] The invention relates to a PA12 material, in particular to a halogen-free flame-retardant and solvent-resistant PA12 material and a preparation method thereof. Background technique [0002] In recent years, long-chain nylon has been recognized by everyone for its low water absorption, high impact strength, and good dimensional stability. Among them, PA12 has the lowest density (1.01g / cm2) in the entire nylon family. 3 ) material with the lowest water absorption rate (balanced water absorption rate 0.5%), it has excellent electrical properties and mechanical properties, so it is widely used in plastic alloys, automobile manufacturing, aircraft manufacturing, additive manufacturing (3D printing), electronic and electrical products, mechanical appliances, Medical technology, oil and gas industry and other fields are highly irreplaceable. In addition, PA12 has extremely high product added value and has key applications in many advanced manufacturing indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/06C08K9/04C08K3/34C08K5/3412C08K5/3492
CPCC08K13/06C08K9/08C08K3/34C08K5/3412C08K5/34928C08L2201/02C08L2201/22C08L77/02
Inventor 纪少思祁先勇陈连清邵有国宋林隋杨石耀东
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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