Photosensitive resin and preparation method and application thereof

A photosensitive resin and resin technology, applied in the direction of additive processing, can solve the problems of complex processing technology and energy consumption, and achieve the effects of improved resolution, high elongation at break, and good elasticity

Inactive Publication Date: 2020-04-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires high temperature (100°C) treatment, the treatment process is complex, and heating requires energy consumption (reference: CN106796392 A)

Method used

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  • Photosensitive resin and preparation method and application thereof
  • Photosensitive resin and preparation method and application thereof
  • Photosensitive resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A kind of preparation of colorless and transparent polyurethane acrylate resin, concrete steps are as follows:

[0057] At room temperature, mix 150g of polytetrahydrofuran diol (molecular weight: 2000g / mol), 15g of hexamethylene diisocyanate and 10ml of tetrahydrofuran, add 0.03g of dibutyltin dilaurate, then raise the temperature to 70°C for 4 hours, and then take out a small amount of For the prepolymer, use the method specified in HG / T2409-1992 to measure the isocyanate group content, and then titrate 3.70g of hydroxypropyl acrylate into the system to react all the isocyanate groups according to the calculation results. After adding hydroxypropyl acrylate, continue to React at 70°C for 3 hours, and use infrared to test whether the -NCO in the prepolymer is completely reacted. If the characteristic peak of -NCO with a wave number of 2260 disappears, it means that the hexamethylene diisocyanate has been completely reacted. After the complete reaction of the isocyanate...

Embodiment 2

[0068] A kind of preparation of colorless and transparent polyurethane acrylate resin, concrete steps are as follows:

[0069] At room temperature, mix 100g of polycaprolactone diol (molecular weight: 1000g / mol), 33.3g of isophorone diisocyanate and 5ml of tetrahydrofuran, add 0.02g of dibutyltin dilaurate, then raise the temperature to 80°C for 5 hours, and then Take out a small amount of prepolymer, use the method specified in HG / T2409-1992 to measure the content of isocyanate groups, titrate 13g of hydroxypropyl acrylate into the system according to the calculation results to react all the isocyanate groups, add hydroxypropyl acrylate and continue React at 80°C for 3 hours, and use infrared to test whether the -NCO in the prepolymer is completely reacted. If the characteristic peak of -NCO with a wave number of 2260 disappears, it means that the isophorone diisocyanate has completely reacted. After the diisocyanate has completely reacted, p-hydroxyanisole (0.04g) is added t...

Embodiment 3

[0074] A kind of preparation of colorless and transparent polyurethane acrylate resin, concrete steps are as follows:

[0075]At room temperature, mix 100g of polypropylene glycol (molecular weight: 2000g / mol), 11.31g of toluene diisocyanate and 8ml of tetrahydrofuran, add 0.01g of dibutyltin dilaurate, then raise the temperature to 60°C for 4 hours, and then take out a small amount of prepolymer. Use the method specified in HG / T2409-1992 to measure the content of isocyanate groups. According to the calculation results, titrate 3.9g of hydroxypropyl acrylate into the system to react all the isocyanate groups. After adding hydroxypropyl acrylate, continue to react at 80°C for 3h. Whether the -NCO in the prepolymer is tested by infrared is completely reacted, if the characteristic peak of -NCO at wave number 2260 disappears, it shows that the toluene diisocyanate has completely reacted, and after the completion of the toluene diisocyanate reaction, p-hydroxyanisole ( 0.03g) was ...

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Abstract

The invention relates to a photosensitive resin and a preparation method and application thereof, and belongs to the field of intelligent high polymer materials. The photosensitive resin is prepared by reacting polyurethane (methyl) acrylate resin with a monofunctional reactive diluent, a photoinitiator, a leveling agent and a light absorber in a dark environment. An elastomer material formed fromthe photosensitive resin through 3D printing has good elasticity, high tensile strength, high elongation at break and compression resistance, the glass-transition temperature of lower than -50 DEG C,and excellent elasticity at a low temperature.

Description

technical field [0001] The invention relates to a photosensitive resin and its preparation method and application, belonging to the field of polymer materials. Background technique [0002] 3D printing, also known as additive manufacturing, is an intelligent manufacturing technology that can quickly and accurately build complex three-dimensional products. It has a wide range of applications in aviation, electronic appliances, medical and biological fields. Among the existing 3D printing technologies, photocuring 3D printing is still one of the most widely used technologies. As one of the earliest developed and commercialized 3D printing technologies, it has the advantages of high forming precision, fast printing speed and mature technology. been widely concerned. The main components of the 3D printed photocurable resin formula: monomers, oligomers, photoinitiators and light absorbers. The photoinitiators initiate the polymerization of monomers and prepolymers under the acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/48C08G18/42C08G18/69C08G18/67C08L75/16C08K5/45C08K5/353C08K5/06B33Y70/00B33Y80/00
CPCB33Y70/00B33Y80/00C08G18/10C08G18/4277C08G18/4825C08G18/4854C08G18/69C08K5/06C08K5/353C08K5/45C08L2201/10C08G18/672C08L75/16
Inventor 彭枢强吴立新王佳棋钟捷缪佳涛
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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