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Flame-retardant monomer, preparation method and application thereof

A kind of technology of flame retardant monomer and reed fiber

Inactive Publication Date: 2015-12-02
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is physical modification or chemical modification, although the introduction of halogen-containing substances has excellent flame retardant effect, a large amount of harmful substances will be produced during combustion, which will cause secondary harm to the human body and the environment. Affect the mechanical properties of composite materials

Method used

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  • Flame-retardant monomer, preparation method and application thereof
  • Flame-retardant monomer, preparation method and application thereof
  • Flame-retardant monomer, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).

[0030] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber...

Embodiment 2

[0033] Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).

[0034] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber...

Embodiment 3

[0037]Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).

[0038] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber ...

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Abstract

The invention discloses a flame-retardant monomer, a preparation method and application thereof. The flame-retardant monomer PPP is obtained through the reaction of piperazine, phenyl dichlorophosphate and triethylamine according to the fact that the molar ratio is (1:1:2)-(1:1:5). Halogen-free flame-retardant graft modification is carried out on reed fibers by using the flame-retardant monomer PPP, and the modified reed fibers are compounded with PVC to prepare a halogen-free flame-retardant grafted and modified reed fiber / PVC composite. The halogen-free flame-retardant grafted and modified reed fibers provided by the invention have the advantages of being high in flame-retardant efficiency and lasting in flame resistance, and are environment-friendly and free of pollution; the prepared halogen-free flame-retardant grafted and modified reed fiber / PVC composite is good in mechanical property and flame resistance and applicable to the fields, such as household appliances, buildings and decoration.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and specifically relates to the synthesis of a new type of flame-retardant monomer PPP containing phosphorus and nitrogen elements, and the use of the flame-retardant monomer to carry out halogen-free flame-retardant graft modification on reed fibers to prepare a halogen-free Flame retardant modified reed fiber / PVC composite material. Background technique [0002] Reed fiber is the most widely existing natural organic fiber in nature. It has the advantages of low density, low price, and easy degradation. It has gradually become a hot research topic in the wave of environmental protection. Composite materials prepared with reed fibers as reinforcing fillers can not only reduce wear and tear on machines and energy consumption during production, but also have the advantages of cost savings and biodegradability. However, reed fiber expands and releases heat after absorbing moisture, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/6509C08K5/5399C08L97/02C08L27/06
Inventor 夏英张锋锋张伟明任庆龙刘然郭静宫玉梅
Owner DALIAN POLYTECHNIC UNIVERSITY
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