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Phosphorus-containing flame-retardant polybutadiene material and preparation method thereof

A technology of polybutadiene and polybutadiene, which is applied in the field of phosphorus-containing flame-retardant polybutadiene materials and its preparation, can solve the problems of easy loss of flame retardants, poor compatibility between flame retardants and polymers, etc. , to achieve the effect of durable flame retardancy

Inactive Publication Date: 2021-01-22
邓万菁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a phosphorus-containing flame-retardant polybutadiene material and a preparation method thereof. By grafting small molecules with flame-retardant effects on the polybutadiene molecular chain, the polybutadiene The butadiene material has flame retardancy, and the flame retardant molecules are combined with polybutadiene in the form of covalent bonds. There is no problem of poor compatibility between the flame retardant and the polymer and the easy loss of the flame retardant, and the obtained polymer material durable flame retardant

Method used

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  • Phosphorus-containing flame-retardant polybutadiene material and preparation method thereof
  • Phosphorus-containing flame-retardant polybutadiene material and preparation method thereof
  • Phosphorus-containing flame-retardant polybutadiene material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] In a three-necked flask, add 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) (4mmol) and acrylic acid (6mmol), stir, heat to 80°C, and reflux for 6h , to obtain a light yellow and transparent mixed product; the product was separated by precipitation, dissolved in acetone and then added with 1000 mL of chloroform as a precipitant, filtered to obtain a white solid product, and finally vacuum-dried to obtain DOPO derivative 10-propionic acid-9,10- Dihydro-9-oxa-10-phosphaphenanthrene-10V oxide, yield 80.6%.

Embodiment 2

[0031] Add the DOPO derivative 10-propionic acid-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10V oxide (5.0mmol) and 20ml of anhydrous tetrahydrofuran THF into the reactor until the reaction temperature rises to After 70°C, slowly add SOCl dropwise 2 (5.0mmol), dropwise completed reaction 2h, after finishing reaction, decompression distillation removes SOCl 2 and THF to obtain DOPO derivative 10-propionic acid-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10V oxide acid chloride product.

[0032] Hydroxyl-terminated polybutadiene (50.0mmol) was added to a 50ml Schlenk bottle, and after pumping nitrogen three times, N 2 Under protection, add 30ml of anhydrous toluene into a disposable syringe, raise the temperature to 70°C, inject 1ml of pyridine after the hydroxyl-terminated polybutadiene is completely dissolved, stir for 30min, and add the DOPO derivative 10-propionic acid dissolved in toluene dropwise -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10V oxide acid chloride product, he...

Embodiment 3

[0034] 100 parts by mass of polybutadiene grafted nitrogen-phosphorus flame retardant, 10 parts by mass of anti-dripping agent, 2 parts by mass of composite antioxidant, 3 parts by mass of other additives in a mixer at 25°C at 600 rpm Mix at a high speed for 20 minutes, and the mixed material is extruded through an extruder at 230° C., cooled, dried, and pelletized to obtain a phosphorus-containing flame-retardant polybutadiene material.

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Abstract

The invention discloses a phosphorus-containing flame-retardant polybutadiene material and a preparation method thereof. The phosphorus-containing flame-retardant polybutadiene material is composed ofthe following components in parts by mass: 60-100 parts of polybutadiene grafted nitrogen-phosphorus flame retardant, 5-20 parts of anti-dripping agent, 1-3 parts of antioxidant and 2-5 parts of other assistants. The flame retardant is grafted on a polybutadiene molecular chain, and flame retardant molecules and covalent bonds are combined with polybutadiene, so that the problems of poor compatibility between the flame retardant and a polymer and easy loss of the flame retardant when the flame retardant is added into a polybutadiene base material by a physical mixing method are solved; and the obtained polymer material has lasting flame retardancy.

Description

technical field [0001] The invention belongs to the field of polymer chemical synthesis, and in particular relates to a phosphorus-containing flame-retardant polybutadiene material and a preparation method thereof. Background technique [0002] Polybutadiene is mainly used as synthetic rubber. Solution-polymerized polybutadiene is often used together with styrene-butadiene rubber or natural rubber to make tire tread and carcass; in addition, because it is wear-resistant, it can be used as a foreskin for conveyor belts , shoe soles, motorcycle parts, etc.; 1,2-polybutadiene is mainly used as adhesives and sealants. [0003] The polybutadiene molecular chain is composed of hydrocarbon elements, which is easy to burn and does not have flame retardancy. In the preparation of polybutadiene materials, flame retardants are usually added. For example, Chinese patent CN101121816B discloses a flame-retardant polycarbonate / acrylonitrile-butadiene-styrene resin blend and its preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L47/00C08L101/04C08C19/24C08F8/40C08F136/06
CPCC08C19/24C08F8/40C08L15/00C08L47/00C08L2201/02C08L101/04C08L101/00C08F136/06
Inventor 邓万菁
Owner 邓万菁