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Efficient PP flame-retardant master batch and preparation method thereof

A flame retardant masterbatch, high-efficiency technology, applied in the field of flame retardant masterbatch, can solve the problems of poor compatibility between inorganic flame retardants and substrates, failure of flame retardant performance, high price of decabromodiphenylethane, etc.

Inactive Publication Date: 2021-08-13
苏州羽凡工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Referring to an environmentally friendly flame-retardant polypropylene composition disclosed in Chinese patent CN101469095B, ​​it consists of polypropylene resin, primary flame retardant, auxiliary flame retardant, filler talcum powder and talcum powder masterbatch, stabilizer and antioxidant hindered phenol Classes and phosphites, the main flame retardant is decabromodiphenylethane, and the auxiliary flame retardant is a mixture of antimony oxide and inorganic minerals or a mixture of antimony oxide, zinc borate and inorganic minerals. The composition shows excellent Flame retardant performance, but decabromodiphenylethane is expensive, which greatly increases the cost, and the compatibility of inorganic flame retardants with the substrate is poor, easy to migrate, and long-term use will lead to failure of flame retardant performance

Method used

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  • Efficient PP flame-retardant master batch and preparation method thereof
  • Efficient PP flame-retardant master batch and preparation method thereof
  • Efficient PP flame-retardant master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Auxiliary flame retardants are prepared by the following steps:

[0039] Step S1, add 35.3g of anhydrous potassium carbonate, 19.8g of p-hydroxybenzaldehyde and 198mL of tetrahydrofuran to a dry three-necked flask, feed nitrogen, stir at room temperature to dissolve, add 97mL of tetrahydrofuran of hexachlorocyclotriphosphazene Solution, control the dripping within 1h, reflux reaction for 0.5h, heat up to 65°C, continue reflux reaction for 37h, filter with suction, concentrate the filtrate to one-third of the original volume, add deionized water, stir to precipitate precipitate, filter, filter The cake was washed twice with deionized water, recrystallized twice with ethyl acetate, and dried in an oven at 50°C for 8 hours to obtain intermediate 1, in which hexachlorocyclotriphosphazene in tetrahydrofuran solution The dosage ratio of nitrile and tetrahydrofuran is 8.2g: 100mL;

[0040] Step S2, add 9.8g of intermediate 1 and 12.5mL of concentrated nitric acid with a mass ...

Embodiment 2

[0046] Auxiliary flame retardants are prepared by the following steps:

[0047] Step S1, add 35.5g of anhydrous potassium carbonate, 19.9g of p-hydroxybenzaldehyde and 200mL of tetrahydrofuran to a dry three-necked flask, feed nitrogen, stir at room temperature to dissolve, add 98mL of tetrahydrofuran of hexachlorocyclotriphosphazene Solution, control the drop within 1h, reflux reaction for 0.5h, then heat up to 65°C, continue reflux reaction for 38h, filter with suction, concentrate the filtrate to one-third of the original volume, add deionized water, stir to precipitate precipitate, filter, filter The cake was washed twice with deionized water, recrystallized twice with ethyl acetate, and dried in an oven at 50°C for 9 hours to obtain intermediate 1, in which hexachlorocyclotriphosphazene in tetrahydrofuran solution The dosage ratio of nitrile and tetrahydrofuran is 8.3g: 100mL;

[0048] Step S2, add 10.1g of intermediate 1 and 12.7mL of concentrated nitric acid with a mas...

Embodiment 3

[0054] Auxiliary flame retardants are prepared by the following steps:

[0055] Step S1, add 35.8g of anhydrous potassium carbonate, 20.1g of p-hydroxybenzaldehyde and 203mL of tetrahydrofuran to a dry three-necked flask, feed nitrogen, stir at room temperature to dissolve, and add 100mL of hexachlorocyclotriphosphazene in tetrahydrofuran Solution, control the dripping within 1h, reflux reaction for 0.5h, heat up to 65°C, continue reflux reaction for 40h, filter with suction, concentrate the filtrate to one-third of the original volume, add deionized water, stir to precipitate precipitate, filter, filter The cake was washed 3 times with deionized water, recrystallized 3 times with ethyl acetate, and dried in an oven at 50°C for 10 hours to obtain intermediate 1, in which hexachlorocyclotriphosphazene in THF solution The dosage ratio of nitrile and tetrahydrofuran is 8.5g: 100mL;

[0056] Step S2, add 10.2g of intermediate 1 and 13mL of concentrated nitric acid with a mass fra...

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Abstract

The invention discloses an efficient PP flame-retardant master batch which is prepared from the following raw materials in parts by weight: 60.5 to 78.6 parts of PP resin, 10.4 to 16.7 parts of talcum powder, 20.2 to 24.6 parts of modified nano aluminum hydroxide, 7.5 to 11.3 parts of an auxiliary flame retardant, 0.5 to 1.1 parts of a coupling agent, 0.6 to 1 part of a stabilizer, 1.5 to 2 parts of an antioxidant and 20.8 to 35.6 parts of isopropyl ether. The invention also discloses a preparation method of the flame-retardant master batch. The modified nano aluminum hydroxide plays a role of a main flame retardant, the structure that the aluminum hydroxide coats the red phosphorus contains two flame-retardant components of the aluminum hydroxide and the red phosphorus, meanwhile, the disadvantage of poor stability caused by small enough granularity of the red phosphorus is solved, in addition, the auxiliary flame retardant is added to further consolidate the flame-retardant performance, the auxiliary flame retardant is of a pure organic structure, has better compatibility with the base material and is more resistant to migration, and meanwhile, the auxiliary flame retardant is matched with the inorganic flame retardant to achieve the gain effect.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant masterbatches, and relates to a high-efficiency PP flame-retardant masterbatch and a preparation method thereof. Background technique [0002] Polypropylene is widely used in home appliances, building components, interior decoration materials, and automotive parts due to its excellent processability, chemical resistance, and mechanical strength. However, polypropylene itself is extremely flammable. With the improvement of plastic safety requirements, polypropylene must be flame retardant in many occasions. Therefore, many studies have been carried out, adding various organic, inorganic or phosphorus flame retardants to polypropylene to achieve flame retardancy. [0003] Referring to an environmentally friendly flame-retardant polypropylene composition disclosed in Chinese patent CN101469095B, ​​it consists of polypropylene resin, primary flame retardant, auxiliary flame retardant, filler ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/34C08K5/5399C08K9/10C08K3/02C08K3/22C08K13/06C08J3/22
CPCC08J3/226C08J2423/12C08K3/34C08K5/5399C08K9/10C08K2003/2227C08K2003/026C08K13/06
Inventor 叶志刚叶羽凡
Owner 苏州羽凡工程塑料有限公司
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