CN104151783A - Preparation method of carbon nanofiber reinforced polybutylene terephthalate alloy composite material - Google Patents
Preparation method of carbon nanofiber reinforced polybutylene terephthalate alloy composite material Download PDFInfo
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- CN104151783A CN104151783A CN201310178106.6A CN201310178106A CN104151783A CN 104151783 A CN104151783 A CN 104151783A CN 201310178106 A CN201310178106 A CN 201310178106A CN 104151783 A CN104151783 A CN 104151783A
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Abstract
The invention discloses a preparation method of a carbon nanofiber reinforced polybutylene terephthalate alloy composite material, belonging to the technical field of high molecular material preparation. The preparation method comprises the following steps: firstly, adding 43.2-48.5 parts by weight of polybutylene terephthalate into a drying device, and drying at 120 DEG C for 12 hours; secondly, adding the dried material into a high-speed mixer along with 9.4-16.3 parts by weight of a flexibilizer, 6.1-12.6 parts by weight of olefin resin, 4.3-7.4 parts by weight of a compatilizer, 0.4-0.9 part by weight of an antioxidant, 9.3-14.2 parts by weight of fiber powder, 7.5-15.7 parts by weight of carbon fibers and 0.7-1.3 parts by weight of carbon black, mixing for 9 minutes to obtain a mixture, melting and extruding the mixture in a double-screw extruder, cooling by water and dicing to obtain the carbon nanofiber reinforced polybutylene terephthalate alloy composite material. The composite material has the following performance indexes: the tensile strength is 155-175MPa, the bending strength is 216-235MPa, and the notch impact strength is 65-78j/m; due to reasonable carbon fiber amount, the composite material has the advantages of being economic and cheap, and the application range is expanded.
Description
Technical field
The invention belongs to field of polymer material preparing technology, be specifically related to a kind of preparation method of polybutylene terephthalate alloy composite materials of carbon nano fiber enhancing.
Background technology
Polybutylene terephthalate (PBT) is a kind of thermoplastics, is extensively used as civilian or industrial material, has the feature of thermotolerance, weathering resistance, resistance, good luster.Carbon nano fiber has high-modulus, and high strength is widely used in high-strength, the heat-resisting parts such as space flight and aviation.China Patent Publication No. CN102311616A discloses a kind of carbon fiber reinforced polyester material, wherein use more carbon fiber, cause material cost high, be difficult to be adopted by normal domestic industry, and because this material is relatively short of aspect fire-retardant, thereby limited to a certain extent the expansion of its range of application, be therefore necessary to explore rational preparation method and make the polybutylene terephthalate alloy composite materials obtaining eliminate aforesaid shortcoming.
Summary of the invention
Task of the present invention is to provide the preparation method of the polybutylene terephthalate alloy composite materials that a kind of carbon nano fiber strengthens, and the polybutylene terephthalate alloy composite materials being obtained by the method has excellent intensity, desirable flame retardant effect and because carbon fiber content is few, embodied relatively cheap with expanded application scope.
Task of the present invention completes like this, the preparation method of the polybutylene terephthalate alloy composite materials that a kind of carbon nano fiber strengthens, it is first will in 43.2～48.5 parts of input drying installations of the polybutylene terephthalate taking by weight and at 120 ℃, to be dried 12h, obtain dried feed, 9.4～16.3 parts of the toughner again dried feed companion being taken by weight, 6.1～12.6 parts of olefin resins, 4.3 ~ 7.4 parts of compatilizers, 0.4 ~ 0.9 part, oxidation inhibitor, 9.3 ~ 14.2 parts of fiber powders, in 7.5 ~ 15.7 parts, carbon fiber and 0.7 ~ 1.3 part of input high-speed mixer of carbon black, mix 9min, obtain compound, then compound is proceeded in parallel twin screw extruder and melt extrude, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
In one embodiment of the invention, described polybutylene terephthalate is fusing point at the polybutylene terephthalate of 230 ℃.
In another embodiment of the present invention, the styrene-butadiene-styrene that described toughner is hydrogenation.
In yet another embodiment of the present invention, described olefin resin is fusing point at the Co-polypropylene resin of 150 ℃.
In another embodiment of the present invention, the acrylic resin that described compatilizer is maleic anhydride graft.
Of the present invention, also have in an embodiment, described oxidation inhibitor is 2,5-ditert-butylhydro quinone.
More of the present invention and in an embodiment, described fiber powder is the glass fiber powder grinding, length is 120～150 microns.
In of the present invention and then an embodiment, described carbon fiber is carbon nano fiber, and length is 50～120 microns.
Of the present invention, again more and in an embodiment, described carbon black is the carbon black that channel process is produced.
The polybutylene terephthalate alloy composite materials that carbon nano fiber prepared by the inventive method strengthens has following performance index after tested: tensile strength 155～175MPa, flexural strength 216～235MPa, notched Izod impact strength 65～78j/m; Because the amount of carbon fiber is selected rationally, thereby there is relatively cheap strong point and expanded range of application.
Embodiment
Embodiment 1:
First by the fusing point taking by weight in 48.5 parts of input drying installations of polybutylene terephthalate of 230 ℃, and dry 12h at 120 ℃, obtain dried feed, 12 parts of the styrene-butadiene-styrenes of the hydrogenation again dried feed companion being taken by weight, fusing point is 6.1 parts of the Co-polypropylene resins of 150 ℃, by 6 parts of the acrylic resins of maleic anhydride graft, 2, 0.9 part of 5-ditert-butylhydro quinone, length is 12 parts of the milled glass fibers of 120～150 microns, length is to mix 9min in 7.5 parts of the carbon nano fibers of 50～120 microns and 1.3 parts of input high-speed mixers of carbon black of being produced by channel process, obtain compound, then compound is transferred in parallel twin screw extruder and melt extrudes, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
Embodiment 2:
First by the fusing point taking by weight in 43.2 parts of input drying installations of polybutylene terephthalate of 230 ℃, and dry 12h at 120 ℃, obtain dried feed, 16.3 parts of the styrene-butadiene-styrenes of the hydrogenation again dried feed companion being taken by weight, fusing point is 9 parts of the Co-polypropylene resins of 150 ℃, by 7.4 parts of the acrylic resins of maleic anhydride graft, 2, 0.4 part of 5-ditert-butylhydro quinone, length is 9.3 parts of the milled glass fibers of 120～150 microns, length is to mix 9min in 9 parts of the carbon nano fibers of 50～120 microns and 0.7 part of input high-speed mixer of carbon black of being produced by channel process, obtain compound, then compound is transferred in parallel twin screw extruder and melt extrudes, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
Embodiment 3:
First by the fusing point taking by weight in 44 parts of input drying installations of polybutylene terephthalate of 230 ℃, and dry 12h at 120 ℃, obtain dried feed, 9.4 parts of the styrene-butadiene-styrenes of the hydrogenation again dried feed companion being taken by weight, fusing point is 11 parts of the Co-polypropylene resins of 150 ℃, by 4.3 parts of the acrylic resins of maleic anhydride graft, 2, 0.8 part of 5-ditert-butylhydro quinone, length is 11 parts of the milled glass fibers of 120～150 microns, length is to mix 9min in 15.7 parts of the carbon nano fibers of 50～120 microns and 0.9 part of input high-speed mixer of carbon black of being produced by channel process, obtain compound, then compound is transferred in parallel twin screw extruder and melt extrudes, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
Embodiment 4:
First by the fusing point taking by weight in 46 parts of input drying installations of polybutylene terephthalate of 230 ℃, and dry 12h at 120 ℃, obtain dried feed, 14 parts of the styrene-butadiene-styrenes of the hydrogenation again dried feed companion being taken by weight, fusing point is 12.6 parts of the Co-polypropylene resins of 150 ℃, by 5.5 parts of the acrylic resins of maleic anhydride graft, 2, 0.6 part of 5-ditert-butylhydro quinone, length is 14.3 parts of the milled glass fibers of 120～150 microns, length is to mix 9min in 13 parts of the carbon nano fibers of 50～120 microns and 1.1 parts of input high-speed mixers of carbon black of being produced by channel process, obtain compound, then compound is transferred in parallel twin screw extruder and melt extrudes, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
The polybutylene terephthalate alloy composite materials that the carbon nano fiber being obtained by above-described embodiment 1 to 4 strengthens has following technique effect after tested:
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Tensile strength MPa | 156 | 162 | 168 | 175 |
| Flexural strength MPa | 216 | 223 | 229 | 234 |
| Notched Izod impact strength j/m | 65.6 | 69.4 | 73.5 | 77.8 |
Claims (9)
1.
the preparation method of the polybutylene terephthalate alloy composite materials that a kind of carbon nano fiber strengthens, it is characterized in that it is first will in 43.2～48.5 parts of input drying installations of the polybutylene terephthalate taking by weight and at 120 ℃, to be dried 12h, obtain dried feed, 9.4～16.3 parts of the toughner again dried feed companion being taken by weight, 6.1～12.6 parts of olefin resins, 4.3 ~ 7.4 parts of compatilizers, 0.4 ~ 0.9 part, oxidation inhibitor, 9.3 ~ 14.2 parts of fiber powders, in 7.5 ~ 15.7 parts, carbon fiber and 0.7 ~ 1.3 part of input high-speed mixer of carbon black, mix 9min, obtain compound, then compound is proceeded in parallel twin screw extruder and melt extrude, after water cooling and pelletizing, obtain the polybutylene terephthalate alloy composite materials that carbon nano fiber strengthens.
2.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described polybutylene terephthalate is fusing point at the polybutylene terephthalate of 230 ℃.
3.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that the styrene-butadiene-styrene that described toughner is hydrogenation.
4.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described olefin resin is fusing point at the Co-polypropylene resin of 150 ℃.
5.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that the acrylic resin that described compatilizer is maleic anhydride graft.
6.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described oxidation inhibitor is 2,5-ditert-butylhydro quinone.
7.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described fiber powder is the glass fiber powder grinding, and length is 120～150 microns.
8.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described carbon fiber is carbon nano fiber, and length is 50～120 microns.
9.
the preparation method of the polybutylene terephthalate alloy composite materials that carbon nano fiber according to claim 1 strengthens, is characterized in that described carbon black is the carbon black that channel process is produced.
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| CN201310178106.6A CN104151783A (en) | 2013-05-14 | 2013-05-14 | Preparation method of carbon nanofiber reinforced polybutylene terephthalate alloy composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176020A (en) * | 2015-10-19 | 2015-12-23 | 福建师范大学 | PBS (Poly Butylene Succinate)/carbon material composite wire for 3D (Three-dimensional) printing and preparation method thereof |
| CN106221137A (en) * | 2016-07-25 | 2016-12-14 | 江苏祺胜现代新材料有限公司 | A kind of heat-insulating flame-retardant wheelhouse portions and preparation technology thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977560A (en) * | 2012-11-30 | 2013-03-20 | 余姚市中发工程塑料有限公司 | Material special for low-warp carbon fiber reinforced polybutylece terephthalate (PBT) bracket and preparation method thereof |
| CN102993650A (en) * | 2012-09-27 | 2013-03-27 | 天津金发新材料有限公司 | Polybutylene terephthalate-based thermoplastic elastomer composition, and preparation method and application thereof |
| CN103013060A (en) * | 2012-11-28 | 2013-04-03 | 宁波长阳科技有限公司 | Polyethylene toughening thermoplastic polyester composite material and preparation method thereof |
-
2013
- 2013-05-14 CN CN201310178106.6A patent/CN104151783A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102993650A (en) * | 2012-09-27 | 2013-03-27 | 天津金发新材料有限公司 | Polybutylene terephthalate-based thermoplastic elastomer composition, and preparation method and application thereof |
| CN103013060A (en) * | 2012-11-28 | 2013-04-03 | 宁波长阳科技有限公司 | Polyethylene toughening thermoplastic polyester composite material and preparation method thereof |
| CN102977560A (en) * | 2012-11-30 | 2013-03-20 | 余姚市中发工程塑料有限公司 | Material special for low-warp carbon fiber reinforced polybutylece terephthalate (PBT) bracket and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176020A (en) * | 2015-10-19 | 2015-12-23 | 福建师范大学 | PBS (Poly Butylene Succinate)/carbon material composite wire for 3D (Three-dimensional) printing and preparation method thereof |
| CN106221137A (en) * | 2016-07-25 | 2016-12-14 | 江苏祺胜现代新材料有限公司 | A kind of heat-insulating flame-retardant wheelhouse portions and preparation technology thereof |
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Application publication date: 20141119 |