A kind of polymer phosphorus-silicon flame retardant and preparation method thereof

A technology of silicon flame retardant and polymer, which is applied in the field of polymer phosphorus-silicon flame retardant and its preparation, can solve the problems of compatibility of polymer materials that are not resistant to hydrolysis, hindering reburning, and low corrosion , to achieve the effects of convenient control, improved compatibility and low production cost

Active Publication Date: 2021-12-17
铨盛聚碳科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Halogen-free phosphate flame retardants have high flame retardant efficiency, little effect on light stabilizers, low toxicity, low corrosion, and can hinder re-flammation. The common ones are tricresyl phosphate, tributyl phosphate and triiso Propyl phosphate; however, most of these flame retardants are liquid, and there are problems such as high volatility, poor heat resistance, no resistance to hydrolysis, and poor compatibility with polymer materials

Method used

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  • A kind of polymer phosphorus-silicon flame retardant and preparation method thereof
  • A kind of polymer phosphorus-silicon flame retardant and preparation method thereof
  • A kind of polymer phosphorus-silicon flame retardant and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A preparation method of a polymer phosphorus-silicon flame retardant, comprising the steps of:

[0034] (S1), take the flame retardant intermediate DOPO and heat it to a molten state, then add phenylvinyl silicone oil to the molten flame retardant intermediate DOPO and mix, raise the temperature to initiate the reaction for 13 hours, and obtain phenylvinyl silicone oil grafted with DOPO ;

[0035] (S2), mix 0.25 parts of aromatic vinyl monomers and 0.2 parts of phenylvinyl silicone oil grafted with DOPO obtained in step (S1) in molar parts, then add 33 parts of water and 0.03 parts of release agent and mix uniformly, Then add initiator A, then raise the temperature to 78°C under continuous stirring conditions, initiate the reaction for 7 hours, then filter, wash, and dry to obtain a polymer phosphorus-silicon-containing flame retardant.

[0036] In the step (S1), the molar fraction of the vinyl group of the phenyl vinyl silicone oil is twice the molar fraction of the f...

Embodiment 2

[0047] A preparation method of a polymer phosphorus-silicon flame retardant, comprising the steps of:

[0048] (S1), take the flame retardant intermediate DOPO and heat it to a molten state, then add phenylvinyl silicone oil to the molten flame retardant intermediate DOPO and mix, raise the temperature to initiate the reaction for 10 hours, and obtain phenylvinyl silicone oil grafted with DOPO ;

[0049] (S2), mix 0.2 part of aromatic vinyl monomer and 0.1 part of phenylvinyl silicone oil grafted with DOPO obtained in step (S1) in molar parts, then add 30 parts of water and 0.01 part of release agent and mix uniformly, Then add initiator A, then raise the temperature to 70°C under continuous stirring conditions, initiate the reaction for 8 hours, then filter, wash, and dry to obtain a polymer phosphorus-silicon-containing flame retardant.

[0050] In the step (S1), the molar fraction of the vinyl group of the phenyl vinyl silicone oil is 1.8 times the molar fraction of the fl...

Embodiment 3

[0061] A preparation method of a polymer phosphorus-silicon flame retardant, comprising the steps of:

[0062] (S1), take the flame retardant intermediate DOPO and heat it to a molten state, then add phenylvinyl silicone oil to the molten flame retardant intermediate DOPO and mix, raise the temperature to initiate the reaction for 15 hours, and obtain phenylvinyl silicone oil grafted with DOPO ;

[0063] (S2), mix 0.3 part of aromatic vinyl monomer and 0.3 part of phenylvinyl silicone oil grafted with DOPO obtained in step (S1) in molar parts, then add 35 parts of water and 0.05 part of release agent and mix uniformly, Then add initiator A, then raise the temperature to 85°C under continuous stirring, initiate the reaction for 8 hours, then filter, wash, and dry to obtain a high molecular phosphorus-silicon-containing flame retardant.

[0064] In the step (S1), the molar fraction of the vinyl group of the phenyl vinyl silicone oil is 3.0 times the molar fraction of the flame ...

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Abstract

The present invention relates to the technical field of organic flame retardants, in particular to a polymer phosphorus-silicon-containing flame retardant and a preparation method thereof, the preparation method comprising the following steps: (S1), heating DOPO, a flame retardant intermediate, to a molten state , then add phenylvinyl silicone oil to the molten flame retardant intermediate DOPO and mix, and heat up to initiate the reaction for 10-15h to obtain the phenylvinyl silicone oil of grafted DOPO; (S2), aromatic vinyl monomer and Mix the phenylvinyl silicone oil grafted with DOPO evenly, then add water and the release agent and mix evenly, then add the initiator A, then raise the temperature to 70-85°C under continuous stirring, initiate the reaction for 6-8h, then filter and wash and drying to obtain a polymer phosphorus-silicon flame retardant. The preparation method is simple in operation, convenient in control, high in production efficiency and low in production cost, and can be used in large-scale production.

Description

technical field [0001] The invention relates to the technical field of organic flame retardants, in particular to a polymer phosphorus-silicon flame retardant and a preparation method thereof. Background technique [0002] Organophosphorus flame retardants not only overcome the shortcomings of chlorine-containing flame retardants, which have large combustion smoke and emit toxic and corrosive gases, but also improve the shortcomings of high-intensity inorganic flame retardants that seriously affect the physical properties of materials. Flame retardancy, low smoke, low toxicity, no corrosive gas generation. There is a C—P bond in the phosphate molecule, which has good stability, good water resistance and solvent resistance. [0003] Halogen-free phosphate flame retardants have high flame retardant efficiency, little effect on light stabilizers, low toxicity, low corrosion, and can hinder re-flammation. The common ones are tricresyl phosphate, tributyl phosphate and triiso P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F212/08C08F212/12
CPCC08F283/124C08F212/08C08F212/12
Inventor 王启瑶任雪峰孙佳男覃韦崴
Owner 铨盛聚碳科技股份有限公司
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