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Degradable photocurable resin and preparation method thereof

A photocurable resin, degradable technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problem of difficult degradation of photocurable resins, and achieve the effect of fast curing rate

Inactive Publication Date: 2018-09-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defect that photocurable resin is difficult to degrade after curing, the present invention provides a degradable photocurable resin and a preparation method thereof

Method used

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  • Degradable photocurable resin and preparation method thereof
  • Degradable photocurable resin and preparation method thereof
  • Degradable photocurable resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A 12 B 6 DCH 3 Synthesis

[0028] Add 50.0 g of polylactide diol with an average molecular weight of 500, 44.4 g of isophorone diisocyanate and 0.19 g of dibutyl tin dilaurate into a flask equipped with a mechanical stirrer, and stir at 45°C for 10 hours. Add 26.0g of hydroxyethyl methacrylate and 0.12g of hydroquinone and react at 50℃ for 12 hours to obtain A 12 B 6 DCH 3 .

[0029] The product is characterized by NMR:

[0030] 1 H-NMR(600MHz, CCl 3 D): δ6.07(s), δ5.52(s), δ4.83-5.13 (m), δ4.22-4.29(m), δ3.99-4.09(m), δ3.70-3.81( m), δ3.17-3.25, δ2.86(s), δ2.09(s), δ1.90(s), δ0.80-1.66(m).

Embodiment 2

[0032] A 12 B 13 DCH 3

[0033] Add 100.0g polylactide diol with an average molecular weight of 1000, 44.4g isophorone diisocyanate and 0.43g dibutyltin dilaurate into a flask equipped with a mechanical stirrer, and stir at 80°C for 4 hours. Add 26.0g of hydroxyethyl methacrylate and 0.17g of hydroquinone and react at 60°C for 36 hours to obtain A 12 B 13 DCH 3 .

[0034] The product is characterized by NMR:

[0035] 1 H-NMR(600MHz, CCl 3 D): δ6.08(s), δ5.54(s), δ4.71-5.12 (m), δ4.23-4.28(m), δ3.98-4.10(m), δ3.63-3.81( m), δ3.16-3.20, δ2.85(s), δ1.90(s), δ0.81-1.65(m).

Embodiment 3

[0037] A photo-curable resin with degradability, wherein the mass percentage of each component is:

[0038] A 12 B 6 DCH 3 43.6%, 27.7% of hydroxyethyl methacrylate, 27.7% of ethylene glycol dimethacrylate, 1% of phenylbis(2,4,6-trimethylbenzoyl) phosphine oxide, mix and stir the above materials Evenly. The properties of the obtained photocurable resin with degradability are: double bond conversion rate 62.9%, gel content of cured product 98.5%, bending strength 87.2MPa, bending modulus 2184MPa, degraded weight loss 5.1% after 10 weeks of immersion in simulated body fluid.

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Abstract

The invention discloses a degradable photocurable resin and a preparation method thereof. The photocurable resin comprises 40 to 90 parts by weight of a degradable (methyl)acrylate prepolymer, 10 to 60 parts by weight of a small molecule (methyl)acrylate reactive diluent and 0.5 to 3 parts by weight of a photoinitiator. The degradable photocurable resin has the ability to degrade under the conditions of acid, alkali, neutral and biological enzyme, and can be applied to the fields of coating, biomedicine, 3D printing and the like.

Description

Technical field [0001] The invention designs the field of photocurable materials, specifically a photocurable resin with degradability and a preparation method thereof. Background technique [0002] The photo-curing process refers to the process in which liquid oligomers and monomers undergo cross-linking polymerization to form solid products under the action of light (including ultraviolet and visible light) or high energy rays. It has the characteristics of fast curing speed, less pollution, energy saving, and excellent performance of cured products. It is an environmentally friendly green technology. The light-curing resin is one of the components with the largest proportion in the light-curing product. It is the matrix resin of the light-curing formula, which constitutes the basic skeleton of the cured product and determines the basic performance of the cured product. The early application of light-curing resins was mainly concentrated in printing, photography and plate maki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/20C08F222/14C08F222/20C09D175/14
CPCC08F290/067C09D175/14C08F222/102
Inventor 何经纬刘芳
Owner SOUTH CHINA UNIV OF TECH
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