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Phosphorus-nitrogen-containing polymer-coated beta-FeOOH nanoparticles, and preparation method and application thereof

A nanoparticle and polymer technology, applied in the field of flame retardant rubber, can solve problems such as the inability to meet the requirements of practical applications, the decline of rubber mechanical properties, etc., and achieve the effect of good smoke suppression, overcoming poor compatibility, and improving thermal stability.

Active Publication Date: 2017-08-18
万新(厦门)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of filling of inorganic substances in rubber often leads to a great decrease in the mechanical properties of rubber, which cannot meet the requirements of practical applications.

Method used

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  • Phosphorus-nitrogen-containing polymer-coated beta-FeOOH nanoparticles, and preparation method and application thereof
  • Phosphorus-nitrogen-containing polymer-coated beta-FeOOH nanoparticles, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 17.1g FeCl to the single-necked bottle in turn 3 ·6H 2 0. 15 g of polyvinylpyrrolidone and 600 mL of water were reacted at 80° C. for 10 h. After centrifugation, the supernatant was discarded to leave a precipitate, and the resulting precipitate was washed repeatedly with water and ethanol to obtain nanometer β-FeOOH.

[0030] (2) Get 10g of nanometer β-FeOOH obtained in step (1) and disperse it in the first solvent, add 20g of 3,4-dihydroxybenzaldehyde, stir at room temperature for 6h, pour off the clear liquid after centrifugation and leave the precipitate, the resulting precipitate The substance is reacted and washed with the first solvent to obtain 3,4-dihydroxybenzaldehyde-modified β-FeOOH.

[0031] (3) Disperse 1 g of 3,4-dihydroxybenzaldehyde-modified β-FeOOH obtained in step (2) and 0.2 g of terephthalaldehyde in 600 mL of tetrahydrofuran, and then slowly add 720 mL of 0.01 g / mL dissolved in 2,4,6-tris(p-N'-octadecylureido-anilino)-1,3,5-triazine solut...

Embodiment 2

[0034] (1) The preparation of nanometer β-FeOOH is the same as in Example 1.

[0035] (2) The preparation of 3,4-dihydroxybenzaldehyde-modified β-FeOOH is the same as in Example 1.

[0036] (3) The preparation of β-FeOOH nanoparticles coated with phosphorus and nitrogen polymer is the same as that in Example 1.

[0037] (4) Take 0.5g of phosphorus-nitrogen-containing polymer-coated β-FeOOH nanoparticles and blend them with 100g of rubber, ultrasonically treat them for 0.5-3 hours, add 2g of DCP, mix them on an open mill for 5-10 minutes, and then mold and vulcanize them to obtain phosphorus-containing Nitrogen polymer coated β-FeOOH nanoparticles functionalized flame retardant rubber.

Embodiment 3

[0039] (1) The preparation of nanometer β-FeOOH is the same as in Example 1.

[0040] (2) The preparation of 3,4-dihydroxybenzaldehyde-modified β-FeOOH is the same as in Example 1.

[0041] (3) The preparation of β-FeOOH nanoparticles coated with phosphorus and nitrogen polymer is the same as that in Example 1.

[0042] (4) Take 0.25g of phosphorus-nitrogen-containing polymer-coated β-FeOOH nanoparticles and blend them with 100g of rubber, ultrasonically treat them for 0.5-3 hours, add 2g of DCP, mix them on an open mill for 5-10 minutes, and then mold and vulcanize them to obtain phosphorus-containing Nitrogen polymer coated β-FeOOH nanoparticles functionalized flame retardant rubber.

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Abstract

The invention discloses phosphorus-nitrogen-containing polymer coated beta-FeOOH nanoparticles and a preparation method and application thereof. The nanoparticles comprise nano beta-FeOOH and a polymer coated outside the nano beta-FeOOH and containing Schiff base structures; and DOPO is added to the polymer. According to the prepared phosphorus-nitrogen-containing polymer coated beta-FeOOH nanoparticles, two flame-retardant elements including a phosphorus element and a nitrogen element are introduced, the phosphorus element can catalyze the system to form a phosphorus-rich carbon layer when rubber is burnt, and the carbon layer can stop the burning of the rubber as a protective layer; the nitrogen element can generate non-combustible gas when the rubber is burnt, and further the burning process is slowed down; in addition, due to introduction of beta-FeOOH in the system, the thermal stability of the material can be improved and the smoke suppressing effect is good; and the two flame-retardant elements phosphorus and nitrogen and the beta-FeOOH have the synergistic flame-retardant effect, so that the effect for improving the flame-retardant property of the rubber is obvious.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant rubber, and in particular relates to a phosphorus-nitrogen-containing polymer-coated β-FeOOH nanoparticle and a preparation method and application thereof. Background technique [0002] Rubber is a kind of highly elastic polymer material with reversible deformation. Due to its good insulation, mechanical properties and chemical stability, it is widely used in various fields such as tires, wires and cables, and high-temperature insulating electrical products. However, most natural rubber and synthetic rubber generally have the disadvantage of being flammable, which greatly limits the application of rubber in fields with high requirements for flame retardancy, such as automobiles and electrical appliances. In the traditional halogen-containing flame retardant technology, because the halogen flame retardant will produce toxic gas during the combustion process, it often causes secondary damage...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/22C08L23/16C08G12/30C08G12/40
CPCC08G12/30C08G12/40C08K3/22C08K9/10C08L2201/02C08L23/16
Inventor 许一婷兰加水戴李宗
Owner 万新(厦门)新材料有限公司
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