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Hyperbranched structured polyimide resin applied to 3D printing industry, and preparation method thereof

A polyimide resin and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of reduced processing performance, poor mechanical properties of PLA, low strength, etc., and achieve low melt viscosity, good solubility, and excellent film formation sexual effect

Active Publication Date: 2018-06-08
WUXI CHUANGCAI OPTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are very few types of polymer materials that can be used for 3D printing. The reported ones are mainly acrylonitrile-butadiene-styrene terpolymer (ABS resin) and polylactic acid (PLA resin). Among them, ABS resin has both The high chemical stability, oil resistance and surface hardness of acrylonitrile polymers, the toughness and cold resistance of butadiene polymers, the good gloss and processability of styrene polymers, etc. The increase of molecular weight will greatly reduce the processing performance
However, PLA has poor mechanical properties and is prone to brittle cracks, which limits its application.

Method used

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  • Hyperbranched structured polyimide resin applied to 3D printing industry, and preparation method thereof
  • Hyperbranched structured polyimide resin applied to 3D printing industry, and preparation method thereof
  • Hyperbranched structured polyimide resin applied to 3D printing industry, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 100mL of solvent N,N-dimethylacetamide into a dry and clean glass bottle, pass through nitrogen for protection, then add 3.42g of 1,5-(4-amino)phenoxynaphthalene (10mmol), and wait until it is completely dissolved , slowly added 2.82g of 1,3,5-tris(4-phenoxydiacid)mellitic anhydride (5mmol) in batches, heated to 40 degrees to accelerate the initiation of the reaction, and kept stirring for 12 hours, then added 0.74g ortho Phthalic anhydride (5 mmol) was capped, and after stirring for 12 hours, an imidization reagent, acetic anhydride, and triethylamine in excess of the molar number of amino groups were added, and nitrogen protection was maintained, and stirring was continued at room temperature for 10 hours. The obtained polymer solution was precipitated into acetone, stirred and washed, and dried in a vacuum oven for 6 hours to obtain a phthalic anhydride-terminated amino-terminated hyperbranched polymer P-1.

Embodiment 2

[0039] Add 100mL solvent N,N-dimethylacetamide to a dry and clean glass bottle, nitrogen protection, then add 5.64g of 1,3,5-tris(4-phenoxydiacid)benzenetrianhydride (10mmol ), after all dissolved, add 3.42g of 1,5-(4-amino)phenoxynaphthalene (10mmol), heat to 40 degrees to accelerate the initiation reaction, and keep stirring for 12 hours, then add 0.93g of aniline (10mmol) After capping and stirring for 12 hours, add imidization reagent, acetic anhydride and triethylamine in excess of the molar number of amino groups, maintain nitrogen protection, and continue stirring at room temperature for 10 hours. The obtained polymer solution was precipitated into acetone, stirred and washed, and dried in a vacuum oven for 6 hours to obtain an anhydride-terminated hyperbranched polymer P-2 terminated by aniline.

Embodiment 3

[0041]Add 150mL of solvent N,N-dimethylacetamide into a dry and clean glass bottle, pass through nitrogen for protection, then add 1.58g of 1,5-diaminonaphthalene (10mmol), after it is completely dissolved, slowly add 2.82 g of 1,3,5-three (4-phenoxydiacid) trimellitic anhydride (5mmol), heated to 40 degrees to accelerate the initiation of the reaction, and kept stirring for 18 hours, then added 0.74g phthalic anhydride (5mmol ) end-capping, after stirring for 16 hours, add imidization reagent, acetic anhydride and triethylamine in excess of the molar number of amino groups, maintain nitrogen protection, and continue stirring for 8 hours at room temperature. The obtained polymer solution was precipitated into acetone, stirred and washed, and dried in a vacuum oven for 6 hours to obtain a phthalic anhydride-terminated amino-terminated hyperbranched polymer P-3.

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Abstract

The invention relates to a hyperbranched structured polyimide resin applied to the 3D printing industry, and a preparation method thereof, and belongs to the technical field of the 3D printing industry. The hyperbranched structured polyimide resin is prepared through condensing tribasic anhydride, twisted diamine and blocking agents which are phthalic anhydride and aniline. The preparation methodcomprises the following steps: obtaining a precursor polyamide acid structure, and adding an imidization reagent to complete imidization in order to obtain the hyperbranched structured polyimide resinapplied to the 3D printing industry. The polyimide resin prepared in the invention has the advantages of excellent solubility, excellent film forming property and low melt viscosity, and is expectedto be applied to the 3D printing industry.

Description

technical field [0001] The invention relates to a hyperbranched polyimide resin used in the 3D printing industry and a preparation method thereof, belonging to the technical field of the 3D printing industry. Background technique [0002] Polyimide material is a functional material with excellent performance, especially high temperature resistance and insulation performance, so it is widely used in military and aerospace fields; as a civilian product, polyimide is mainly used in the form of thin film exist. Polyimide film (Polyimide Film, referred to as PIF) is known as the world's best film insulation material, because of its excellent heat resistance, mechanical, electrical insulation and chemical resistance, it has always been a high-performance polymer The material of choice, so it is also called "gold film". [0003] However, the intermolecular interaction of polyimide is very strong, and the polyimide (Kapton) of ordinary structure shows the characteristics of insolu...

Claims

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Application Information

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IPC IPC(8): C08G73/10B33Y70/00
CPCB33Y70/00C08G73/1028C08G73/1071
Inventor 不公告发明人
Owner WUXI CHUANGCAI OPTICAL MATERIALS
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