A kind of photocuring material and its preparation method and application

A technology of light-curing materials and printing materials, which is applied in the chemical industry, can solve the problems of relying on foreign imports of molding resins, few materials suitable for light-curing, and high prices of molding materials, and achieve moderate curing strength and flexibility, small curing shrinkage, and high hardness. and moderate flexibility

Inactive Publication Date: 2018-02-06
湖南杰瑞精密陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, few companies have this technology. Although they have developed printer equipment, most of the molding resins still rely on foreign imports. The price of molding materials is high, and the cost of completing an object is extremely high, which greatly hinders its rapid development.
[0005] The comprehensive requirements of 3D printing light-curing materials include low viscosity, fast curing, moderate curing strength and flexibility, small shrinkage and low price. However, there are few suitable light-curing materials that can meet the above factors at the same time. The method of mixing resin and reactive diluent monomer is difficult to meet the performance requirements

Method used

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  • A kind of photocuring material and its preparation method and application
  • A kind of photocuring material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation of photocurable materials

[0045]Main resin:

[0046] Polyethylene glycol diacrylate (PEGDA): 30%;

[0047] Dicyclohexylmethane diisocyanate belongs to cycloaliphatic diisocyanate: 40%;

[0048] Photoinitiator:

[0049] BP: 1%;

[0050] TPO: 1.5%

[0051] Active diluent

[0052] Tripropylene glycol diacrylate: 8%

[0053] Pure acrylic resin: 6.5%

[0054] Auxiliary:

[0055] Ethanol: 5%;

[0056] Dimethicone: 4%

[0057] Polyacrylate: 4%;

[0058] Add the above raw materials into the reactor, stir to dissolve, and then vigorously stir at 40°C for 6 hours. After the stirring is completed, let it stand for cooling and filter to obtain a photocurable material, that is, a photocurable resin binder.

[0059] 2. Preparation of zirconia printing materials

[0060] Add 92% by weight of zirconia powder and 8% of the light-curable material prepared in step 1 into the mixer.

[0061] Turn on the mixer, mix and grind the above two raw materials at a spe...

Embodiment 2

[0064] 1. Preparation of photocurable materials

[0065] Main resin:

[0066] Polyethylene glycol diacrylate (PEGDA): 25%;

[0067] Dicyclohexylmethane diisocyanate belongs to cycloaliphatic diisocyanate: 30%;

[0068] Photoinitiator:

[0069] BP: 2%;

[0070] TPO: 3%

[0071] Active diluent

[0072] Tripropylene glycol diacrylate: 10%

[0073] Pure acrylic resin: 10%

[0074] Auxiliary:

[0075] Ethanol: 8%;

[0076] Dimethicone: 6%

[0077] Polyacrylate: 6%;

[0078] Add the above raw materials into the reactor, stir to dissolve, and then vigorously stir at 40°C for 6 hours. After the stirring is completed, let it stand for cooling and filter to obtain a photocurable material, that is, a photocurable resin binder.

[0079] 2. Preparation of zirconia printing materials

[0080] Add 90% by weight of zirconia powder and 10% of the photocurable material prepared in step 1 into the mixer.

[0081] Turn on the mixer, mix and grind the above two raw materials at a spee...

Embodiment 3

[0084] 1. Preparation of photocurable materials

[0085] Main resin:

[0086] Polyethylene glycol diacrylate (PEGDA): 35%;

[0087] Dicyclohexylmethane diisocyanate is an alicyclic diisocyanate: 45%;

[0088] Photoinitiator:

[0089] BP: 0.5%;

[0090] TPO: 0.5%

[0091] Active diluent

[0092] Tripropylene glycol diacrylate: 5%

[0093] Pure acrylic resin: 5%

[0094] Auxiliary:

[0095] Ethanol: 4%;

[0096] Dimethicone: 2%

[0097] Polyacrylate: 3%;

[0098] Add the above raw materials into the reactor, stir to dissolve, and then vigorously stir at 40°C for 6 hours. After the stirring is completed, let it stand for cooling and filter to obtain a photocurable material, that is, a photocurable resin binder.

[0099] 2. Preparation of zirconia printing materials

[0100] Add 95% by weight of zirconia powder and 5% of the photocurable material prepared in step 1 into the mixer.

[0101] Turn on the mixer, mix and grind the above two raw materials at a speed of 200 ...

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Abstract

The invention provides photo-curing material.The photo-curing material comprises, by weight percentage, 55-80% of matrix resin, 1-5% of photo-initiator, 10-20% of reactive diluent and 9-20% of auxiliaries, wherein the matrix resin comprises polyethylene glycol diacrylate and dicyclohexylmethylmethane-category alicyclic diisocyanate.The invention further provides a preparation method of the photo-curing material.The preparation method includes: adding raw materials into a reactor, stirring for dissolving, then stirring at constant temperature for 6-8 hours, cooling, and filtering, wherein the stirring temperature is 35-45 DEG C, and preferably the stirring temperature is 38-42 DEG C.The invention also provides zirconia printing material prepared by using the photo-curing material, and the zirconia printing material comprises, by weight percentage, 90-95% of zirconia powder and 5-10% of the photo-curing material.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a photocurable material and its preparation method and application. Background technique [0002] 3D printing technology appeared in the mid-1990s. It is a technology based on digital model files, using solidified, bonded, and fused materials such as fluid, powder, and silk (rod), to construct objects by solidifying, bonding, and fusing layer by layer. [0003] SLA (Stereo Lithography Appearance, Stereo Lithography Appearance) is the earliest practical rapid prototyping technology, using liquid photosensitive resin raw materials. The process is to firstly design a three-dimensional solid model through CAD, use a discrete program to slice the model, and design the scanning path. The generated data will precisely control the movement of the laser scanner and the lifting table; the laser beam is scanned by the numerical control device. The device irradiates the surface of the liqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F283/06C08F222/20C04B35/634C04B35/48B33Y70/00
CPCB33Y70/00C04B35/48C04B35/63404C04B35/63444C08F283/006C08F283/065C08F222/102
Inventor 王有才
Owner 湖南杰瑞精密陶瓷有限公司
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