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Preparation of functionalized organic magnesium salt and application of functionalized organic magnesium salt in preparation of polyester composite material

A polyester composite material and composite material technology, applied in the field of preparation of functional organic magnesium salts, can solve the problems of high addition amount, poor matrix compatibility, and affecting the mechanical properties of the matrix

Inactive Publication Date: 2019-05-03
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of the inorganic particles (high addition amount, poor compatibility with the matrix) seriously affect the mechanical properties of the matrix, the ultra-fine inorganic particles have become the focus of our current research

Method used

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  • Preparation of functionalized organic magnesium salt and application of functionalized organic magnesium salt in preparation of polyester composite material
  • Preparation of functionalized organic magnesium salt and application of functionalized organic magnesium salt in preparation of polyester composite material
  • Preparation of functionalized organic magnesium salt and application of functionalized organic magnesium salt in preparation of polyester composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Organic functionalization of magnesium hydroxide: Dissolve 16.28g of succinic acid in 300mL of distilled water, add 4g of magnesium hydroxide after the succinic acid is completely dissolved, stir magnetically at 90°C for 2 hours, remove the distilled water, and dry in vacuum to obtain The white powdery solid is the functionalized organic magnesium salt SMH;

[0030] (2) Preparation of flame-retardant polyester (PET) composite material: Take 830.65g of terephthalic acid, 403.44g of ethylene glycol, 0.29g of antimony trioxide, and 24.6g of SMH, and mix them into a 1.5L reactor. Check the airtightness of the instrument, slowly pass in nitrogen to remove the air in the kettle, and control the temperature at 200°C for esterification reaction. When the column top temperature is lower than 100°C, the esterification reaction is completed and drained. Then the system enters the polycondensation stage. After the first semi-vacuum polycondensation for 0.5h, the temperature is ...

Embodiment 2

[0033] (1) Organic functionalization of magnesium oxide: Take 34g of p-aminobenzoic acid and dissolve it in 500mL of distilled water; after the p-aminobenzoic acid is completely dissolved, add 5g of magnesium oxide, stir magnetically at 80°C for 3h, remove the distilled water, and dry in vacuum. The resulting white powdery solid is the functionalized organic magnesium salt PMO;

[0034] (2) Preparation of flame-retardant polyester (PET) composite material: Take 830.65g of terephthalic acid, 403.44g of ethylene glycol, 0.29g of antimony trioxide, and 50g of PMO, and mix them into a 1.5L reactor. Check the airtightness of the instrument, slowly pass in nitrogen to remove the air in the kettle, and control the temperature at 220°C for esterification reaction. When the column top temperature is lower than 100°C, the esterification reaction is completed and drained. Then the system enters the polycondensation stage. After the semi-vacuum polycondensation for 0.5h, the temperature i...

Embodiment 3

[0037] (1) Organic functionalization of magnesium carbonate: Dissolve 11.25g of pimelic acid in 500mL of distilled water. After the pimelic acid is completely dissolved, add 3g of magnesium carbonate, stir magnetically at 90°C for 5h, remove the distilled water, and dry in vacuum to obtain The white powdery solid is organic magnesium salt PMC;

[0038] (2) Preparation of flame-retardant polyester (PET) composite material: Take 830.65g of terephthalic acid, 403.44g of ethylene glycol, 0.29g of antimony trioxide, and 74g of PMC, and mix them into a 1.5L reactor. Check the airtightness of the instrument, slowly pass in nitrogen to remove the air in the kettle, and control the temperature at 240°C for esterification reaction. When the column top temperature is lower than 100°C, the esterification reaction is completed and drained. Then the system enters the polycondensation stage. After polycondensation in semi-vacuum for 1.0h, the temperature is slowly raised to 280°C for high-va...

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Abstract

The invention discloses a preparation method of a functionalized organic magnesium salt, an organic acid is completely dissolved in distilled water to form an organic acid aqueous solution, an inorganic magnesium salt into the organic acid aqueous solution, the organic acid aqueous solution is magnetically stirred at 70-100 DEG C for 1-5 hours, the distilled water is removed, vacuum drying is carried out to obtain a white powdery solid, and the obtained white powdery solid is the functionalized organic magnesium salt. An intrinsic flame-retardant polyester (PET) composite material prepared from the functionalized organic magnesium salt as a flame retardant solves the compatibility between inorganic particles and a matrix, and meanwhile solves the problem of poor flame retardancy of polyester (PET) plastic existing in the existing production process.

Description

technical field [0001] The invention relates to a preparation method of a functionalized organic magnesium salt. The invention also relates to the application of a functionalized organic magnesium salt as a flame retardant to prepare a flame-retardant polyester (PET) composite material, which belongs to the technical field of flame-retardant materials and high Molecular material synthesis technology field. Background technique [0002] Most of the polyesters synthesized in the early days were aliphatic polyester products, with low molecular weight and melting point and very soluble in water. Until 1941, the British J.R.Whenfield and J.T.Dikson used terephthalic acid and ethylene glycol as raw materials to synthesize Polyethylene terephthalate has a higher melting point than aliphatic polyesters. Polyester (PET) is a linear thermoplastic material. Due to its excellent mechanical properties, thermal properties, and low cost, it has been widely used in many fields such as fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/02C08K3/22C08K3/32C08K3/38C08G63/183C08G63/86C08L67/02C09C1/02C09C3/08
CPCC07C51/412C07C227/18C08G63/78C08K9/04C07C55/10C07C55/16C07C229/60C08L67/02C08G63/183C08G63/866C08L2201/02
Inventor 雷自强和瑾楠杨尧霞杨志旺曾巍石剑平
Owner NORTHWEST NORMAL UNIVERSITY
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