A kind of hybrid curable resin and its synthesis method

A hybrid curing and resin technology, applied in the field of hybrid curable resin and its synthesis, can solve the problems of lack of appearance, large shrinkage, and large deformation and warpage of three-dimensional objects, and achieve excellent photocurability and low shrinkage. Good efficiency and flexibility

Active Publication Date: 2017-09-19
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the 3D light-curing resins on the market have a large shrinkage rate during the light-curing process, resulting in a large deformation and warpage of the finished three-dimensional object, which does not have an excellent appearance effect

Method used

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  • A kind of hybrid curable resin and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Accurately weigh 100g of polyisoprene diol, 6g of 3-ethyl-3-oxetanemethanol, 6g of hydroxyethyl acrylate, 0.1g of polymerization inhibitor p-hydroxyanisole, catalyst dibutyltin dilaurate Add 0.01g into a three-necked flask with a thermometer, raise the temperature to 65°C, start adding 22g of diisocyanate IPDI dropwise, control the temperature at 70-75°C, and react for 2.5 hours. The content of the NCO group was analyzed by an infrared spectrometer, and when the NCO peak completely disappeared, the heating reaction was stopped to obtain an oxetane-modified polyurethane acrylate resin.

Embodiment 2

[0031] Accurately weigh 100 g of polyisoprene diol, 4 g of 3-ethyl-3-oxetanemethanol, 12 g of hydroxyethyl methacrylate, 0.1 g of inhibitor p-hydroxyanisole, and catalyst dilauric acid Add 0.01 g of dibutyltin into a three-necked flask with a thermometer, raise the temperature to 65 degrees, start adding 25 g of diisocyanate TDI dropwise, control the temperature at 70-75 degrees, and react for 2 hours. The content of the NCO group was analyzed by an infrared spectrometer, and when the NCO peak completely disappeared, the heating reaction was stopped to obtain an oxetane-modified polyurethane acrylate resin.

Embodiment 3

[0033] Accurately weigh 110g of polyisoprene diol, 10g of 3-ethyl-3-oxetanemethanol, 5g of hydroxypropyl acrylate, 0.1g of polymerization inhibitor p-hydroxyanisole, catalyst dibutyltin dilaurate Add 0.01g into a three-necked flask with a thermometer, raise the temperature to 65°C, start adding 30g of diisocyanate MDI dropwise, control the temperature at 70-75°C, and react for 3 hours. The content of the NCO group was analyzed by an infrared spectrometer, and when the NCO peak completely disappeared, the heating reaction was stopped to obtain an oxetane-modified polyurethane acrylate resin.

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Abstract

The invention provides a synthetic method of a hybrid curable resin, comprising: polyisoprene diol 80-110g, 3-ethyl-3-oxetanemethanol 4-10g, hydroxyacrylate 5- 12g, 0.1g of polymerization inhibitor p-hydroxyanisole, and 0.01g of catalyst dibutyltin dilaurate were added in a three-necked flask with a thermometer, and the temperature was raised to 65 degrees, and 18-32g of diisocyanate was started to be added dropwise, and the temperature was controlled at 70 ‑75 degrees, reaction 2‑3h. Use an infrared spectrometer to analyze the content of the NCO group. When the peak of the NCO completely disappears, stop the heating reaction to obtain an oxetane-modified polyurethane acrylate resin. The resin of the present invention can be used to produce three-dimensional products with low shrinkage, low warpage, good flexibility, aging resistance, high processing accuracy, and excellent photocurability and excellent mechanical strength; in addition, the synthetic reaction process Simple, easy to control, no need to use special equipment, no solvent, low production cost.

Description

technical field [0001] The invention relates to a hybrid curable resin and a synthesis method thereof, which can be used for 3D printing materials and belongs to the field of photocurable materials. Background technique [0002] Photocurable resin products used in the 3D printing industry form a cured resin layer with a specific pattern by selectively irradiating the photocurable resin in the container with an ultraviolet laser and similar light sources. Applying a substantial layer of the photocurable resin composition to the cured layer and selectively irradiating the liquid surface results in a new layer of cured resin closely laminated to the old layer of cured resin. Repeating this process a certain number of times with the same or different irradiation patterns results in a three-dimensional object consisting of tightly laminated cured resin layers. This photoprocessing method can easily process complex-shaped three-dimensional objects in a short period of time, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/69C08G18/73C08G18/76
Inventor 潘光君王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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