CN111909320A - Photocuring 3D printing modified polylactic acid composite photosensitive resin and preparation method thereof - Google Patents

Photocuring 3D printing modified polylactic acid composite photosensitive resin and preparation method thereof Download PDF

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Publication number
CN111909320A
CN111909320A CN202010749582.9A CN202010749582A CN111909320A CN 111909320 A CN111909320 A CN 111909320A CN 202010749582 A CN202010749582 A CN 202010749582A CN 111909320 A CN111909320 A CN 111909320A
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photosensitive resin
polylactic acid
composite photosensitive
photocuring
modified polylactic
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鄢国平
刘凡
鄢珈睿
王玉芳
陈思
张云飞
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Wuhan Institute of Technology
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Wuhan Institute of Technology
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/01Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00Materials specially adapted for additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00Materials specially adapted for additive manufacturing
    • B33Y70/10Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/44Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/46Polymerisation initiated by wave energy or particle radiation
    • C08F2/48Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
    • C08F2/50Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/325Calcium, strontium or barium phosphate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a photocuring 3D printing modified polylactic acid composite photosensitive resin and a preparation method thereof. The photocuring 3D printing modified polylactic acid composite photosensitive resin comprises the following components in percentage by weight: 20-90% of vinyl polylactic acid high polymer material, 5-79% of cross-linking agent, 1-40% of photoinitiator, 0-60% of diluent, 0-40% of solvent and 0-30% of filler. The photocuring 3D printing modified polylactic acid composite photosensitive resin provided by the invention has good photocuring crosslinking property and high photosensitive activity, is suitable for photocuring three-dimensional forming 3D printing, and can be used for manufacturing personalized medical instruments such as in-vivo implants; the material formed after curing and crosslinking has the characteristics of good biocompatibility and degradability, good hydrophilic/hydrophobic property, high mechanical strength and high toughness.

Description

Photocuring 3D printing modified polylactic acid composite photosensitive resin and preparation method thereof
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a photocuring 3D printing modified polylactic acid composite photosensitive resin and a preparation method thereof.
Background
The raw material used by the light-cured three-dimensional additive manufacturing technology (SLA) is liquid photosensitive resin containing unsaturated bonds, and other materials can be added into the liquid photosensitive resin to form a composite material. And scanning ultraviolet laser beams under the control of a computer point by taking each layered section of a computer model as a path, curing after a resin thin layer in a scanned area generates photopolymerization or photocrosslinking reaction, moving a workbench in the vertical direction after one layer is cured, covering a new layer of liquid resin on the surface of the previously cured resin, scanning and curing layer by layer, and finally obtaining the three-dimensional prototype. SLA technology has the advantages of high precision, good surface quality, stable performance, high mechanical strength of products and the like, and has the defects that molded products need to be cleaned to remove impurities, the products are possibly deformed, and the currently used photosensitive resin is expensive and generally cannot be degraded.
Therefore, the modified polylactic acid composite photosensitive resin developed by the invention can be processed by adopting the technologies of photocuring three-dimensional forming additive manufacturing and the like while keeping good biocompatibility and degradability, has good processability, has important economic value and wide application range.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a photocuring 3D printing modified polylactic acid composite photosensitive resin and a preparation method thereof.
The technical scheme provided by the invention is as follows:
the photocuring 3D printing modified polylactic acid composite photosensitive resin comprises the following components in percentage by weight: 20-90% of vinyl polylactic acid high polymer material, 5-79% of cross-linking agent, 1-40% of photoinitiator, 0-60% of diluent, 0-40% of solvent and 0-30% of filler, wherein:
the structural general formula of the vinyl polylactic acid high polymer material is as follows:
Figure BDA0002609588730000021
wherein m, n and l are natural numbers of 1-1000000 respectively;
the cross-linking agent is selected from any one of cyclohexanol hexaallyl ether or cyclohexanol hexaacrylate;
the filler is selected from any one of vinyl modified calcium carbonate and hydroxyapatite nano materials.
The proportion of the diluent, the solvent and the filler is not 0.
The photocuring 3D printing modified polylactic acid composite photosensitive resin provided by the technical scheme has good photocuring crosslinking property and high photosensitive activity, is suitable for photocuring three-dimensional forming 3D printing, and can be used for manufacturing personalized in-vivo implants and other medical instruments; the material formed after curing and crosslinking has the characteristics of good biocompatibility and degradability, good hydrophilic/hydrophobic property, high mechanical strength and high toughness.
Preferably, the weight percentage of the vinyl polylactic acid high molecular material in the composite photosensitive resin is 40-79%.
Specifically, the cross-linking agent is selected from any one of cyclohexanol hexaallyl ether or cyclohexanol hexaacrylate, the molecular structure of the cyclohexanol hexaallyl ether or cyclohexanol hexaacrylate contains 6 vinyl groups, and the cyclohexanol hexaallyl ether or cyclohexanol hexaacrylate and the vinyl polylactic acid high polymer material are subjected to effective photo-crosslinking reaction, so that the curing rate and effect are improved, and a good three-dimensional reticular cross-linking structure is formed.
Preferably, the crosslinking agent accounts for 20-50% of the composite photosensitive resin by weight.
Specifically, the filler is selected from any one of vinyl modified calcium carbonate and hydroxyapatite nano materials, the surfaces of the vinyl modified calcium carbonate and the hydroxyapatite nano materials contain a large amount of vinyl groups, and the vinyl modified calcium carbonate and the hydroxyapatite nano materials perform effective photo-crosslinking reaction with a vinyl polylactic acid high polymer material and a crosslinking agent, so that the curing rate and effect are improved, and the formation of a three-dimensional network crosslinking structure is further promoted.
Preferably, the filler accounts for 5-25% of the composite photosensitive resin by weight.
Specifically, the photoinitiator is selected from any one or a mixture of phenyl-2, 4, 6-trimethylbenzoyl lithium phosphonate, 2,4, 6-trimethylbenzoyl ethyl phenyl phosphonate and 1-hydroxycyclohexyl phenyl ketone; the photoinitiator accounts for 2-20% of the composite photosensitive resin by weight.
Specifically, the diluent is N-vinyl pyrrolidone or ethyl fumarate; the weight percentage of the diluent in the composite photosensitive resin is 5-30%.
Specifically, the solvent is selected from any one or more of dichloromethane, trichloromethane, carbon tetrachloride or dichloroethane; the solvent accounts for 5-20% of the composite photosensitive resin by weight.
Ultraviolet light (the wavelength is 365nm +/-10 nm, the lamp power is more than or equal to 5w, and the illumination intensity is 400 mw/cm) of the existing photocuring 3D printer2) Under the irradiation, within 10 seconds, the modified polylactic acid composite photosensitive resin provided by the invention is rapidly crosslinked and cured. Compared with the similar photocuring 3D printer material, the curing time is further shortened.
The material formed after curing and crosslinking has the characteristics of good biocompatibility and degradability, good hydrophilicity/hydrophobicity, high mechanical strength and high toughness. The mechanical strength and toughness are improved by more than 50% compared with the photosensitive resin which contains a common divinyl crosslinking agent and is not modified by vinyl. Specific performance data and comparative data may be obtained by direct testing using the above or other existing testing methods.
The invention also provides a preparation method of the photocuring 3D printing modified polylactic acid composite photosensitive resin, which is characterized by comprising the following steps of: mixing the above components at room temperature.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The formula of the photocuring 3D printing modified polylactic acid composite photosensitive resin (1000 g) is as follows:
Figure BDA0002609588730000041
example 2
The formula of the photocuring 3D printing modified polylactic acid composite photosensitive resin (500 g) is as follows:
Figure BDA0002609588730000042
example 3
The formula of the photocuring 3D printing modified polylactic acid composite photosensitive resin (200 g) is as follows:
Figure BDA0002609588730000043
Figure BDA0002609588730000051
example 4
The formula of the photocuring 3D printing modified polylactic acid composite photosensitive resin (100 g) is as follows:
Figure BDA0002609588730000052
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The photocuring 3D printing modified polylactic acid composite photosensitive resin is characterized by comprising the following components in percentage by weight: 20-90% of vinyl polylactic acid high polymer material, 5-79% of cross-linking agent, 1-40% of photoinitiator, 0-60% of diluent, 0-40% of solvent and 0-30% of filler, wherein:
the structural general formula of the vinyl polylactic acid high polymer material is as follows:
Figure FDA0002609588720000011
wherein m, n and l are natural numbers of 1-1000000 respectively;
the cross-linking agent is selected from any one of cyclohexanol hexaallyl ether or cyclohexanol hexaacrylate;
the filler is selected from any one of vinyl modified calcium carbonate or hydroxyapatite nano materials.
2. The photocurable 3D printing modified polylactic acid composite photosensitive resin according to claim 1, wherein the: the weight percentage of the vinyl polylactic acid high molecular material in the composite photosensitive resin is 40-79%.
3. The photocuring 3D printing modified polylactic acid composite photosensitive resin as claimed in claim 1, wherein: the cross-linking agent accounts for 20-50% of the composite photosensitive resin by weight.
4. The photocuring 3D printing modified polylactic acid composite photosensitive resin as claimed in claim 1, wherein: the filler accounts for 5 to 25 weight percent of the composite photosensitive resin.
5. The photocurable 3D printing modified polylactic acid composite photosensitive resin according to any one of claims 1 to 4, wherein: the photoinitiator is selected from any one or a mixture of more of phenyl-2, 4, 6-trimethyl benzoyl lithium phosphonate, 2,4, 6-trimethyl benzoyl phenyl ethyl phosphonate and 1-hydroxycyclohexyl phenyl ketone; the photoinitiator accounts for 2-20% of the composite photosensitive resin by weight.
6. The photocurable 3D printing modified polylactic acid composite photosensitive resin according to any one of claims 1 to 4, wherein: the diluent is N-vinyl pyrrolidone or ethyl fumarate; the weight percentage of the diluent in the composite photosensitive resin is 5-30%.
7. The photocurable 3D printing modified polylactic acid composite photosensitive resin according to any one of claims 1 to 4, wherein: the solvent is selected from any one or more of dichloromethane, trichloromethane, carbon tetrachloride or dichloroethane; the solvent accounts for 5-20% of the composite photosensitive resin by weight.
8. The preparation method of the photocuring 3D printing modified polylactic acid composite photosensitive resin as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps: mixing the above components at room temperature.
CN202010749582.9A 2020-07-30 2020-07-30 Photocuring 3D printing modified polylactic acid composite photosensitive resin and preparation method thereof Pending CN111909320A (en)

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Cited By (2)

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CN113174021A (en) * 2021-03-26 2021-07-27 四川大学 Photosensitive bioabsorbable polymer with in-situ anti-cell adhesion function and preparation method thereof
CN113999539A (en) * 2021-10-22 2022-02-01 李开南 3D printing composite material with CT imaging effect and preparation method and application thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113174021A (en) * 2021-03-26 2021-07-27 四川大学 Photosensitive bioabsorbable polymer with in-situ anti-cell adhesion function and preparation method thereof
CN113999539A (en) * 2021-10-22 2022-02-01 李开南 3D printing composite material with CT imaging effect and preparation method and application thereof
CN113999539B (en) * 2021-10-22 2022-09-09 李开南 3D printing composite material with CT imaging effect and preparation method and application thereof

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