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A kind of furan ring side group-containing triazine polyurethane char-forming agent and its synthesis method

A synthesis method and triazine technology are applied in the field of triazine polyurethane carbon-forming agent and its synthesis, and achieve the effects of less side reactions, improved degradability, and easy operation.

Active Publication Date: 2021-07-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, furan rings are rarely introduced into intumescent flame retardant systems, and the focus of research is still on cyclic compounds with high carbon and nitrogen content such as benzene rings and triazine rings, while the furan ring itself has properties that are not inferior to The excellent char-forming performance of benzene rings is entirely possible to replace the role of benzene ring compounds in intumescent flame retardant carbon sources

Method used

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  • A kind of furan ring side group-containing triazine polyurethane char-forming agent and its synthesis method
  • A kind of furan ring side group-containing triazine polyurethane char-forming agent and its synthesis method
  • A kind of furan ring side group-containing triazine polyurethane char-forming agent and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In a 1000mL three-necked flask, completely dissolve 1mol cyanuric chloride in 300mL1,4-dioxane, under ice-salt bath and nitrogen protection, dissolve 100mL1 of 1mol furfurylamine and 1mol triethylamine, The 4-dioxane solution was slowly dropped into it, and the dropping time was controlled to be 2 hours. After the dropping was completed, the reaction was continued for 2 hours in an ice-salt bath.

[0043] At room temperature, 100 mL of 1,4-dioxane solution dissolved with 2 mol of ethylenediamine and 2 mol of triethylamine was slowly dropped into it, and after the addition, the temperature was raised to 110° C. to continue the reaction for 8 hours. After the reaction was completed, suction filtration was performed, and the filtrate was rotary evaporated to obtain a solid powder, which was washed with deionized water for 5 times, and product 1 was obtained after vacuum drying, which was set aside.

[0044] Dissolve 1 mol of product 1 completely dehydrated and 1 mol of 4,4...

Embodiment 2

[0047] In a 1000mL three-necked flask, completely dissolve 1mol of cyanuric chloride in 400mL of acetonitrile, and slowly drop 100mL of acetonitrile solution dissolved in 1mol of methylfurylamine and 1mol of pyridine into it under ice-salt bath and nitrogen protection. Adding time is 2h. After the dropwise addition, continue to react in ice-salt bath for 2h.

[0048] At room temperature, 100 mL of acetonitrile solution dissolved with 2 mol of phenolphthalein and 2.6 mol of pyridine was slowly dropped into it, and after the addition was completed, the temperature was raised to 110° C. to continue the reaction for 8 h. After the reaction, filter with suction, spin evaporate the filtrate to obtain a solid powder, wash with deionized water for 5 times, and dry in vacuum to obtain the product 2, which is set aside.

[0049] Dissolve 1 mol of product 2 completely dehydrated and 1 mol of hexamethylene diisocyanate (HDI) in 400 mL of toluene dehydrated, mechanically stir evenly, add 2...

Embodiment 3

[0052] In a 1000mL three-necked flask, completely dissolve 1mol of cyanuric chloride in 300mL of 1,4-dioxane; The oxane solution was slowly dropped into it, and the dropping time was controlled to be 2h. After the dropping was completed, the reaction was continued for 2h in an ice-salt bath.

[0053] At room temperature, 100 mL of 1,4-dioxane solution dissolved with 2 mol of 4,4-diaminodiphenylmethane (DDM) and 2 mol of pyridine was slowly dropped into it. After the addition was completed, the temperature was raised to 110° C. to continue the reaction for 8 h. After the reaction, suction filtration was performed, and the filtrate was rotary evaporated to obtain a solid powder, which was washed with deionized water for 5 times, and the product 3 was obtained after vacuum drying, which was set aside.

[0054] Dissolve 1 mol of product 3 completely dehydrated and 1 mol of isophorone diisocyanate (IPDI) in 500 mL of N,N-dimethylformamide dehydrated, mechanically stir evenly, add 2...

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Abstract

The invention discloses a triazine polyurethane char-forming agent containing a furan ring side group and a synthesis method thereof. The present invention firstly prepares the diamine or diol compound containing furan ring side group and triazine ring, and then prepolymerizes with diisocyanate under the action of a catalyst, and finally polymerizes after adding a chain extender to form a polyurethane material. The polyurethane material has Excellent char-forming performance. The method for preparing the polyurethane char-forming agent of the present invention has few side reactions, high yield and simple operation, and the introduced bio-based furan compound can improve the degradability of the polyurethane, and the introduction of the furan ring and the triazine ring can significantly improve the amount of the polyurethane. The charcoal performance of the polyurethane charcoal agent with good thermal stability, excellent charcoal performance and high residual carbon content has been obtained, which has a good development prospect in the polymer intumescent flame retardant system.

Description

technical field [0001] The invention belongs to the technical field of polyurethane synthesis and modification, and in particular relates to a triazine polyurethane char-forming agent containing a furan ring side group and a synthesis method thereof. Background technique [0002] With the continuous development of society and the continuous advancement of science and technology, polymer materials are more and more widely used in transportation, electronic devices, building materials and other fields that require fire and flame retardancy. Therefore, the development and application of flame retardants are also increasingly Pay attention to. From the 1970s to the present, flame retardants have gradually developed from focusing only on flame retardants to environmental protection, halogen-free, low toxicity and high efficiency. Traditional halogen-based flame retardants have been gradually replaced by new flame retardant methods. At present, the most widely studied flame retar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/32C08G18/73C08G18/75C08G18/76C08G18/10C08L23/12C08L75/04C08K3/32
CPCC08G18/10C08G18/3246C08G18/3275C08G18/73C08G18/755C08G18/7671C08K2003/323C08L23/12C08L2201/02C08G18/3206C08L75/04C08K3/32Y02P20/52
Inventor 李娟孙晋皓
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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