Preparation method of bio-based self-repairing flame-retardant material with high dielectric property

A flame-retardant material and bio-based technology, applied in the field of polymer synthesis and functional application, can solve the problems of difficult secondary processing, poor dielectric properties, etc., and achieve the effects of stable quality, reduced pollution, and high product purity

Pending Publication Date: 2022-01-21
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the disadvantages of traditional epoxy resins such as easy microcracks, difficult secondary processing, poor dielectric properties and flammabilit

Method used

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  • Preparation method of bio-based self-repairing flame-retardant material with high dielectric property
  • Preparation method of bio-based self-repairing flame-retardant material with high dielectric property
  • Preparation method of bio-based self-repairing flame-retardant material with high dielectric property

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] A method of preparing high dielectric self-repair flame retardant material and its products, which are mainly divided into three steps: first, bio-based, butamol, bio-based, "clicking chemistry" synthesis bioemalene Single: 2-4 mol of lilac and 1 mol polyvyl mercaptoyl ester are added to the quartz glass with a sealing cover and magnetic stirring, and ultraviolet light as a reaction light source, temperature rise to 30 to 60 ° C, add catalyst, and the catalyst amount is the total mass. 2 to 5%, after 6 to 12 h, naturally cooled, the biocyclycounted polyester monomer was prepared.

[0033] The polyvyl mercaptoate is bis (3-mercaptopropionic acid) ethylene glycol ester, trimethylolpropane tri (3-mercaptopropionic acid) ester, tetra (3-mercaptopropionic acid) pentaerythritol ester. Buy from Shanghai Macrlin Biochemical Technology Co., Ltd.

[0034] The catalyst is photoinitiator-184 or photoinitiator-1173.

[0035] Next, a two-step open-loop-closed-loop method is used to synth...

Example Embodiment

[0044] Example 1

[0045] 2 mol of butiler and 1 mol bis (3-mercaptopropate) ethylene glycol ester were added in a quartz glass with a sealing cover and magnetic stirring, and ultraviolet light as a reaction light source, heated to 30 ° C, adding photoinitiator-184, The amount of catalyst was 2% of total mass, and after 12 h, naturally cooled, and EU-EGMP was produced. Under a nitrogen gas atmosphere, 1 mol EU-EGMP and 6 mol epoxy chloropropane were added to three flasks equipped with reflux, magnetic stirring and thermometer, and 100 ° C was added to 120 ° C, add 0.01 mol of benzyl triethylammonium chloride, condensed. After refluxing, 2 mol of sodium hydroxide and 2 mol calcium oxide were added to 40 ° C, and the reaction product was maintained at 40 ° C for 2 hours, and the reaction product was filtered after the reaction was completed. The epoxide-free phenol-based polycytrol product (EEGMP) can be obtained.

Example Embodiment

[0046] Example 2

[0047] 3 mol of lilac and 1 mol trimethylolpropane three (3-mercaptopropionic acid) ester were added in a quartz glass with a sealing cover and magnetic stirring, and ultraviolet light as a reaction light source, heated to 40 ° C, adding photoinitiator - 184. The amount of catalyst is 3% of total mass, and after 10 h, naturally, the butiler phenol-based polyteride monomer (EU-TTMP) was obtained. Under a nitrogen gas atmosphere, a 1 mol gousy polycycle is added to a three flask equipped with a reflux condenser, magnetic stirring and a thermometer, and 10 mol of epoxy chloropropane is added to 110 ° C, and 0.05 mol of Detovenyltrialyltrial Ammonium chloride, condensation reflux reaction for 3 hours, 5 mol of sodium hydroxide and sodium hydroxide and sodium hydroxide and sodium hydrochloride were added to 50 ° C, and the reaction product was filtered after 50 ° C, and the reaction product was filtered, and the filtrate was evaporated. Epoxy chloropropane, remove th...

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Abstract

The invention discloses a preparation method of a bio-based self-repairing flame-retardant material with high dielectric property and a product thereof. The bio-based self-repairing flame-retardant material with high dielectric property is synthesized by taking eugenol, multi-sulfydryl ester and disulfide bond-containing amine as main raw materials and sequentially adopting click chemistry, epoxidation and melt polymerization methods. The main raw materials are wide in source, renewable and independent of petroleum; the preparation process is simple and reasonable and low in energy consumption; the product has good thermal stability, can be recycled, and is easy to degrade and recover. Test results show that the self-repairing self-flame-retardant epoxy resin prepared by the invention has a 100% repairing effect (160DEG C) and excellent dielectric properties and flame retardancy.

Description

technical field [0001] The invention relates to a development and preparation technology of a bio-based self-repairing material, specifically relates to a preparation method of a bio-based self-repairing flame-retardant material with high dielectric properties, and belongs to the technical field of polymer synthesis and functional application. Background technique [0002] The use of renewable resources instead of traditional non-renewable petrochemical resources as raw materials to prepare polymer materials has gradually become a research hotspot. Thermosetting epoxy resin is an important polymer material that is widely used in adhesives, coatings, molded plastics, composite materials, etc. due to its excellent bonding properties, heat / chemical resistance, insulation, mechanical strength, etc. field. However, due to its unique three-dimensional network structure during molding and use, epoxy resin can hardly undergo secondary processing, cannot be recycled after the end of...

Claims

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Application Information

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IPC IPC(8): C08G59/06C08G59/66
CPCC08G59/063C08G59/66
Inventor 聂小安李文斌陈洁王义刚
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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