Free radical photopolymerization dark curing initiation system and preparation method thereof

A technology of initiation system and photopolymerization, which is applied in the field of photopolymerization curing initiation system, free radical photopolymerization dark curing initiation system and its preparation field, can solve the problems of less heat release during initiation polymerization, short illumination time, low utilization efficiency, etc. Achieve the effect of high conversion rate of initiation polymerization, short irradiation time, and less heat of polymerization

Active Publication Date: 2019-06-14
HAINAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The invention provides a free radical photopolymerization dark curing initiation system, the initiation system has good solubility in water, excellent biocompatibility, less exothermic heat for initiating polymerization, and required light intensity 2 , the light time is short, the initiation system effectively overcomes the problem of low light utilization efficiency in the polymer resin system, and can be used to prepare multi-purpose hydrogels

Method used

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  • Free radical photopolymerization dark curing initiation system and preparation method thereof
  • Free radical photopolymerization dark curing initiation system and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A free radical photopolymerization dark curing initiation system, its components are as follows:

[0036] The first component: camphorquinone (CQ) 0.5%,

[0037] The second component: dimer tyrosine (TT) 0.5%,

[0038] Prepare the dark curing initiation system according to the above-mentioned proportion, and based on the weight of the dark curing reaction liquid as 100%, add the dark curing initiation system to an aqueous solution containing 30% acrylamide and mix thoroughly to obtain a transparent and clear dark curing reaction liquid. That is, the composition of the dark curing reaction liquid is: 0.5% camphorquinone, 0.5% dimer tyrosine, and 99% aqueous solution containing 30% acrylamide.

[0039] Photopolymerization reaction: The prepared dark curing reaction solution is placed in a sealed transparent glass test tube, filled with nitrogen and deoxygenated for 10 minutes, and irradiated under a 150W metal halide lamp for 2 minutes, with a light intensity of about 20...

Embodiment 2

[0041] A free radical photopolymerization dark curing initiation system, its components are as follows:

[0042] The first component: riboflavin (RF) 0.5%,

[0043] The second component: dimer tyrosine (TT) 0.5%,

[0044] Prepare the dark curing initiation system according to the above-mentioned proportion, taking the weight of the dark curing reaction solution as 100%. Add the dark curing initiation system into the aqueous solution containing 30% acrylamide and mix thoroughly to obtain a transparent and clear dark curing reaction solution. That is, the composition of the dark curing reaction liquid is: 0.5% riboflavin, 0.5% dimer tyrosine, and 99% aqueous solution containing 30% acrylamide.

[0045] Photopolymerization reaction: The prepared dark curing reaction solution is placed in a sealed transparent glass test tube, filled with nitrogen and deoxygenated for 10 minutes, placed under a 150W metal halide lamp for 5 minutes, and the light intensity is about 20mW / cm 2 . T...

Embodiment 3

[0047] A free radical photopolymerization dark curing initiation system, its components are as follows:

[0048] The first component: tetraiodofluorescein disodium (EB) 0.01%,

[0049] The second component: dimer tyrosine (TT) 0.5%,

[0050] Prepare the dark curing initiation system according to the above-mentioned proportion, taking the weight of the dark curing reaction solution as 100%. Add the dark curing initiation system into the aqueous solution containing 30% acrylamide and mix thoroughly to obtain a transparent and clear dark curing reaction solution. That is, the composition of the dark curing reaction solution is: 0.01% of disodium tetraiodofluorescein, 0.5% of dimer tyrosine, and 99% of an aqueous solution containing 30% of acrylamide.

[0051] Photopolymerization reaction: The prepared dark curing reaction solution is placed in a sealed transparent glass test tube, filled with nitrogen and deoxygenated for 10 minutes, placed under a 150W metal halide lamp for 5 ...

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Abstract

The invention relates to a photocuring initiation system, in particular to a free radical photopolymerization dark curing initiation system and a preparation method thereof, and belongs to the technical field of free radical polymerization preparation. The dark curing initiation system comprises the following components in percentage by weight: a first component: 0.01-1% of a photosensitizer; anda second component: 0.5-1% of a co-initiator, wherein the co-initiator is a water-soluble polypeptide having antioxidation activity and containing tyrosine residues. Compared with a previously reported dark curing photoinitiation system, the free radical photopolymerization dark curing initiation system disclosed by the invention has the advantages that the system is simple in component and is only a two-component system; the system does not contain transition metal elements, has good biocompatibility, can be used in the fields of medical health and the like, and has the advantages of easily available raw materials, good stability, long-term storage, difficulty in oxidative decomposition, low required irradiation light intensity, short irradiation time, high initiated polymerization conversion rate, less polymerization heat release amount, low polymerization system temperature, and no generation of harmful substances with strong alkalinity and strong oxidizability in the polymerizationprocess.

Description

technical field [0001] The invention relates to a photopolymerization curing initiation system, in particular to a free radical photopolymerization dark curing initiation system and a preparation method thereof, belonging to the technical field of free radical photopolymerization preparation. Background technique [0002] At present, light curing technology is widely used in the field of curing thin surface layers such as coatings, adhesives, and varnishes. Because light can penetrate through them, the photopolymerization curing process is fast and sufficient. Generally, the range of the curing thickness is often Between a few microns and 50 microns. However, in thick-film curing or light-curing resins with fillers (especially pigments) added, due to the absorption, scattering, and reflection of light by the curing components, the light intensity is seriously attenuated with the optical path, which affects the curing depth and curing. Efficiency, even can not be cured in se...

Claims

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Application Information

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IPC IPC(8): C08F2/50C08F120/56C08F220/56C08F220/06
Inventor 南旭莹赵一钒陈光英姚玉华
Owner HAINAN NORMAL UNIVERSITY
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