CN104629023A - Preparation method of carbon nanotube/polyester composite material - Google Patents
Preparation method of carbon nanotube/polyester composite material Download PDFInfo
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- CN104629023A CN104629023A CN201410750838.2A CN201410750838A CN104629023A CN 104629023 A CN104629023 A CN 104629023A CN 201410750838 A CN201410750838 A CN 201410750838A CN 104629023 A CN104629023 A CN 104629023A
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Abstract
The invention discloses a preparation method of a carbon nanotube/polyester composite material and belongs to the field of preparation of the composite material. The invention provides the preparation method of the carbon nanotube/polyester composite material with higher mechanical property than polyester. The method comprises the following steps of: on the basis of preparing degradable biological prepolymer with certain molecular weight, adding citric acid monomers as a chain-expanding agent and a crosslinking agent, and in the process of synthesizing a thermosetting poly(glycerin-sebacic acid-citric acid)ester (PGSC) elastomer, adopting a semi-in-situ polymerization and grinding dispersion method to prepare the carbon nanotube/polyester composite material. The carbon nanotube/polyester composite material prepared by adopting the preparation method has the advantages that the tensile strength is improved by 158% than that of pure polyester, and the elastic modulus is improved by 134%.
Description
Technical field
The invention belongs to field of composite material preparation.
Background technology
Biodegradable polyester elastomerics, has the features such as the handiness of Molecular Structure Design, excellent snappiness, good biodegradable and biocompatibility, has obtained the extensive concern of people at biomedical sector.The mechanical property of this kind of material of current discovery is high not enough, limits its widespread use at biomedical sector to a certain extent.
Carbon nanotube has the constructional features such as excellent mechanics, electric property and nanoscale effect, length-to-diameter ratio is large, density is low, specific surface area is large, for polymer nanocomposites, carbon nanotube is not only desirable toughener, or improves the Nano filling of the effect such as materials conductive, electromagnetic shielding.
Summary of the invention
The object of this invention is to provide a kind of carbon nano-tube/poly ester composite material and preparation method thereof high compared with polyester mechanical property.
The present invention is achieved by the following technical programs: a kind of carbon nano-tube/poly ester composite material and preparation method thereof, glycerine and sebacic acid mix by 1:1 in molar ratio, then reaction flask is placed in, vacuum pressure remains on 2KPa, start heating, in the process heated up, make reaction mass complete melting within hour, start mechanical stirring, at 130 DEG C, 19h is reacted under 1KPa, obtain prepolymer, then add citric acid by the total mol ratio 4/4/1 (glycerol/sebacic acid/citric acid) of reaction mass and continue reaction, temperature controls at 120 DEG C, the carbon nanotube of 3% massfraction is added after reaction 0.5h, continue the reaction mixture that O.5h reaction obtains certain crosslinking degree, slowly pass into nitrogen in the whole process of reaction always, the product be synthesized is taken out from reaction flask, after grinding, at 120 DEG C, 30min is placed with Exhaust Gas under 1KPa condition, afterwards at 120 DEG C, curing molding under normal pressure, obtain carbon nano-tube/poly ester matrix material print.
Described carbon nanotube is many walls aligned carbon nanotube, and diameter 10 ~ 20nm, length 0.5 ~ 500 μm, purity are greater than 95%.
The present invention has following beneficial effect:
Adopt carbon nano-tube/poly ester matrix material prepared by the method, its tensile strength improves 158% than pure polyester, and Young's modulus improves 134%.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: preparation process of the present invention is, glycerine and sebacic acid mix by 1:1 in molar ratio, then reaction flask is placed in, vacuum pressure remains on 2KPa, start heating, in the process heated up, make reaction mass complete melting within hour, start mechanical stirring, at 130 DEG C, 19h is reacted under 1KPa, obtain prepolymer, then add citric acid by the total mol ratio 4/4/1 (glycerol/sebacic acid/citric acid) of reaction mass and continue reaction, temperature controls at 120 DEG C, the carbon nanotube of 3% massfraction is added after reaction 0.5h, continue the reaction mixture that O.5h reaction obtains certain crosslinking degree, slowly pass into nitrogen in the whole process of reaction always, the product be synthesized is taken out from reaction flask, after three-roll grinder grinding, pour in mould frame and pave, at 120 DEG C, 30min is placed with Exhaust Gas under 1KPa condition, afterwards at 120 DEG C, curing molding under normal pressure, obtain the carbon nano-tube/poly ester matrix material print that thickness is 1mm.
Described carbon nanotube is many walls aligned carbon nanotube, and diameter 10 ~ 20nm, length 0.5 ~ 500 μm, purity are greater than 95%.
Mechanical test is carried out to the carbon nano-tube/poly ester matrix material print of preparation, its tensile strength is 4.36MPa, Young's modulus is 9.22MPa, elongation at break is 42%, purer thermoset gathers (glycerol-sebacic acid-citric acid) ester (PGSC) elastomerics, its its tensile strength improves 158%, and Young's modulus improves 134%.
Above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. a carbon nano-tube/poly ester composite material and preparation method thereof, it is characterized in that: glycerine and sebacic acid mix by 1:1 in molar ratio, then reaction flask is placed in, vacuum pressure remains on 2KPa, start heating, in the process heated up, make reaction mass complete melting within hour, start mechanical stirring, at 130 DEG C, 19h is reacted under 1KPa, obtain prepolymer, then add citric acid by the total mol ratio 4/4/1 (glycerol/sebacic acid/citric acid) of reaction mass and continue reaction, temperature controls at 120 DEG C, the carbon nanotube of 3% massfraction is added after reaction 0.5h, continue the reaction mixture that O.5h reaction obtains certain crosslinking degree, slowly pass into nitrogen in the whole process of reaction always, the product be synthesized is taken out from reaction flask, after grinding, at 120 DEG C, 30min is placed under 1KPa condition, afterwards at 120 DEG C, curing molding under normal pressure, obtain carbon nano-tube/poly ester matrix material print.
2. carbon nano-tube/poly ester composite material and preparation method thereof as claimed in claim 1, it is characterized in that: described carbon nanotube is many walls aligned carbon nanotube, diameter 10 ~ 20nm, length 0.5 ~ 500 μm, purity are greater than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410750838.2A CN104629023A (en) | 2014-12-10 | 2014-12-10 | Preparation method of carbon nanotube/polyester composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410750838.2A CN104629023A (en) | 2014-12-10 | 2014-12-10 | Preparation method of carbon nanotube/polyester composite material |
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| CN104629023A true CN104629023A (en) | 2015-05-20 |
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| CN201410750838.2A Pending CN104629023A (en) | 2014-12-10 | 2014-12-10 | Preparation method of carbon nanotube/polyester composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147457A3 (en) * | 2016-02-25 | 2017-10-12 | The Secant Group, Llc | Composite containing poly(glycerol sebacate) filler |
| CN107987218A (en) * | 2017-12-08 | 2018-05-04 | 仲恺农业工程学院 | Preparation method of in-situ polymerization modified unsaturated polyester resin |
| US10556217B2 (en) | 2017-03-31 | 2020-02-11 | The Secant Group, Llc | Cured biodegradable microparticles and scaffolds and methods of making and using the same |
-
2014
- 2014-12-10 CN CN201410750838.2A patent/CN104629023A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147457A3 (en) * | 2016-02-25 | 2017-10-12 | The Secant Group, Llc | Composite containing poly(glycerol sebacate) filler |
| US10525140B2 (en) | 2016-02-25 | 2020-01-07 | The Secant Group, Llc | Composite containing poly(glycerol sebacate) filler |
| EP3719058A1 (en) * | 2016-02-25 | 2020-10-07 | The Secant Group, LLC | Composite containing poly(glycerol sebacate) filler |
| US10556217B2 (en) | 2017-03-31 | 2020-02-11 | The Secant Group, Llc | Cured biodegradable microparticles and scaffolds and methods of making and using the same |
| US11602721B2 (en) | 2017-03-31 | 2023-03-14 | The Secant Group, Llc | Cured biodegradable microparticles and scaffolds and methods of making and using the same |
| CN107987218A (en) * | 2017-12-08 | 2018-05-04 | 仲恺农业工程学院 | Preparation method of in-situ polymerization modified unsaturated polyester resin |
| CN107987218B (en) * | 2017-12-08 | 2020-07-28 | 仲恺农业工程学院 | Preparation method of in-situ polymerization modified unsaturated polyester resin |
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Application publication date: 20150520 |