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Free radical-cationic water-based hybrid light-cured resin and synthesis method thereof

A hybrid light-curing, cationic technology, used in additive processing and other directions, can solve problems such as affecting the surface quality of printed products, sticky surface of printed products, and warping and deformation of printed products, so as to reduce production operation risks and reduce volume shrinkage. , to promote the effect of dry

Active Publication Date: 2020-11-20
GUANGZHOU YOUSU PLASTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single free radical system resin has a fast curing speed, which can meet the speed requirements of 3D printing. However, rapid curing will lead to large volume shrinkage, accompanied by large shrinkage stress, and even serious warping and deformation of printed products; Oxygen inhibition occurs when the single radical system is cured, which will cause the surface of the printed product to still appear sticky after cleaning, which seriously affects the surface quality of the printed product

Method used

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  • Free radical-cationic water-based hybrid light-cured resin and synthesis method thereof
  • Free radical-cationic water-based hybrid light-cured resin and synthesis method thereof
  • Free radical-cationic water-based hybrid light-cured resin and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] After the reactor is preheated to 55°C, put 60g of toluene diisocyanate-trimethylolpropane adduct into the reactor, then dropwise add 18g of sodium hydroxysulfonate, 25g of reactive diluent morpholine acrylic acid, and the polymerization inhibitor p-hydroxybenzene Mixture of 0.05g of methyl ether and 0.01g of catalyst dibutyltin dilaurate, control the temperature at 55°C~60°C, keep warm for 1h~2h, add 120g of polyoxypropylene glycol, 3-ethyl -5g of 3-oxetanemethanol and 20g of pentaerythritol triacrylate, control the temperature at 70°C~75°C, keep warm for 2h~3h, test the isocyanate value, stop the reaction when the isocyanate value is zero, and obtain a hybrid light-curable water-based resin.

Embodiment 2

[0033] After the reaction kettle is preheated to 55°C, put 90g of isophorone diisocyanate trimer into the reaction kettle, then dropwise add 25g of sodium hydroxysulfonate, 58g of reactive diluent morpholine acrylic acid, and 0.05g of polymerization inhibitor p-hydroxyanisole g and the catalyst dibutyltin dilaurate 0.01g, control the temperature at 55°C~60°C, keep warm for 1h~2h, add 80g of polyoxypropylene glycol, 3-ethyl-3- 8g of oxetanemethanol and 14g of pentaerythritol triacrylate, control the temperature at 70°C~75°C, keep warm for 2h~3h, test the isocyanate value, stop the reaction when the isocyanate value is zero, and obtain a hybrid light-curable water-based resin.

Embodiment 3

[0035] After preheating the reaction kettle to 55°C, put 70g of hexamethylene diisocyanate trimer into the reaction kettle, then dropwise add 21g of sodium hydroxysulfonate, 45g of reactive diluent morpholine acrylic acid, and 0.05g of polymerization inhibitor p-hydroxyanisole g and the catalyst dibutyltin dilaurate 0.01g, control the temperature at 55°C~60°C, keep warm for 1h~2h, add 150g of polyoxypropylene glycol, 3-ethyl-3- Oxetane methanol 10g and pentaerythritol triacrylate 16g, control the temperature at 70°C~75°C, keep warm for 2h~3h, test the isocyanate value, stop the reaction when the isocyanate value is zero, and obtain a hybrid light-curable water-based resin.

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Abstract

The invention discloses free radical-cationic water-based hybrid light-cured resin and a synthesis method thereof, the light-cured resin synthesized by the method solves the problem of pungent smell of current amine neutralizing resin, a product printed by adopting the water-based hybrid light-cured resin can be directly washed with water, and chemicals are prevented from being used; meanwhile, byutilizing the advantages of free radical type resin and cationic type resin, the photocuring speed of the resin is balanced, the volume shrinkage of a 3D printed product is reduced, the occurrence ofoxygen inhibition is effectively relieved, and the surface drying of the 3D printed product or a surface coating is promoted.

Description

technical field [0001] The invention belongs to the technical field of photocurable resin organic polymers, and in particular relates to a method for synthesizing and preparing water-based hybrid photocurable resin 3D printing materials. Background technique [0002] At present, the more common photocurable 3D printing materials on the market are non-aqueous photocurable resins. After photocurable 3D printing equipment uses this type of resin to print models, it needs to use high-concentration alcohol or isopropanol to clean the models, which will generate a lot of waste alcohol or isopropanol, these wastes need to be recycled through special equipment, the recycling cost is high, and the impact on the environment is great. At the same time, for operators who use light-curing 3D printing equipment for industrial production, long-term exposure to high-concentration alcohol or isopropanol is not conducive to their health and does not meet the requirements of relevant environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/67C08G18/30C08G18/38C08G18/79B33Y70/00
CPCC08G18/6666C08G18/4825C08G18/673C08G18/2845C08G18/288C08G18/792C08G18/794B33Y70/00
Inventor 宋旭亮邹锦光
Owner GUANGZHOU YOUSU PLASTIC TECH CO LTD
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