Resin with mixing and solidification functions and synthetic method thereof

A synthesis method and hybrid curing technology, which is applied in the field of hybrid curable resin and its synthesis, can solve the problems of no appearance effect, large shrinkage rate, large deformation and warpage of three-dimensional objects, etc., and achieve excellent photocurability, low Good shrinkage and flexibility

Active Publication Date: 2015-07-15
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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  • Resin with mixing and solidification functions and synthetic method thereof

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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 resin with mixing and solidification functions. The synthetic method of the resin with the mixing and the solidification functions comprises the steps that 80-110 g of polyisoprene dibasic alcohol, 4-10 g of 3-ethyl-3-hydroxymethyleneoxetane, 5-12 g of hydroxyl acrylate, 0.1 g of polymerization inhibitor para hydroxybenzene methyl ether and 0.01 g of catalyst dibutyltin dilaurate are added into a three-mouth flask with a thermometer, the temperature is raised to 65 degrees, then 18-32 g of diisocyanate starts to be dropwise added, the temperature is controlled to be 70-75 degrees, and reaction is performed for 2-3 h. The content of NCO perssad is analyzed by an infrared spectrometer, until the NCO peak disappears completely, the heating reaction is stopped, and the urethane acrylate modified by oxetane can be obtained. The resin with the mixing and the solidification functions can manufacture three-dimensional products with low shrinking percentage, low warping, good flexibility, ageing resistance, high machining precision, good photocuring performance and excellent mechanical strength; in addition, the synthetic reaction is simple in technology and easy to control, no special equipment is needed to be used, no solvent is needed, and the production cost is low.

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 Applications(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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