CN103013060B - Polyethylene toughening thermoplastic polyester composite material and preparation method thereof - Google Patents
Polyethylene toughening thermoplastic polyester composite material and preparation method thereof Download PDFInfo
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- CN103013060B CN103013060B CN201210504171.9A CN201210504171A CN103013060B CN 103013060 B CN103013060 B CN 103013060B CN 201210504171 A CN201210504171 A CN 201210504171A CN 103013060 B CN103013060 B CN 103013060B
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Abstract
The invention relates to the field of modification of high molecular materials, and in particular relates to a polyethylene toughening thermoplastic polyester composite material and a preparation method of the polyethylene toughening thermoplastic polyester composite material, aiming at overcoming the shortcoming of comparatively poor comprehensive performance of the existing polyethylene, polyester or other composite materials, wherein the composite material consists of 5-60% of thermoplastic polyester resin, 5-60% of glass fiber, 5-60% of polyethylene resin and 2-10% of aid according to weight proportion. The polyethylene toughening thermoplastic polyester composite material disclosed by the invention is comparatively low in cost; by enhancing the toughness through the glass fiber and by finely selecting various component materials and proportions of the component materials, the composite material is excellent in physical performance, capable of overcoming the shortcomings of difficult forming and processing of the thermoplastic polyester, insufficient toughness of the material and the like, and effectively improving the mechanical performance and thermical performance; and the preparation method is simple in process and easy to operate.
Description
Technical field
The present invention relates to polymer modification field, be specifically related to a kind of polyethylene toughened thermoplastic polyester composite and preparation method thereof.
Background technology
Traditional thermoplastic polyester is mainly divided into polybutylene terephthalate (PBT) and the large class of polyethylene terephthalate (PET) two.Due to thermoplastic polyester at aspects such as physical and mechanical properties, resistance toheat, electric property and film-forming propertiess, all show very excellent.Therefore be widely used in engineering plastics, fibrous woven and thin film industry.Particularly as engineering plastics application, than other traditional engineering plastics, as polyamide (PA), polycarbonate (PC) etc. has high cost performance, therefore highly competititve.But to have crystallization rate little due to thermoplastic polyester (especially PET resin), forming process difficulty, the shortcomings such as toughness of material deficiency, thus limited its range of application.
Polyethylene (PE), according to the difference of polymerization process, molecular weight height, chain structure, is divided into high density polyethylene(HDPE) (HDPE), Low Density Polyethylene (LDPE) and linear low density polyethylene (LLDPE).PE has low-temperature flexibility, high-modulus, counter-bending and stress cracking resistance, the advantage such as under low temperature resistance to impact shock is better, but PE also has poor rigidity, the shortcoming that intensity is not high.
Glass fibre can improve mechanical property and other physicalies of polyethylene/polyester composite, also can improve the thermal characteristics of material.Polyethylene/the polyester composite of glass fibre modification can be widely used in the fields such as automobile, household electrical appliances, pipeline.
Summary of the invention
In order to solve existing polyethylene, polyester or the poor defect of its composite material combination property, the invention provides a kind of polyethylene toughened thermoplastic polyester composite and preparation method thereof.Polyethylene toughened thermoplastic polyester composite cost provided by the invention is lower, by glass fibre, strengthen toughness reinforcing, and preferably each constituent materials and proportioning thereof, make the physicals of matrix material excellent, can overcome thermoplastic polyester forming process difficulty, the defects such as toughness of material deficiency, have improved mechanical property and thermal property effectively, its preparation method technique is simple, easy handling.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposals:
The invention provides a kind of polyethylene toughened thermoplastic polyester composite, described matrix material comprises the thermoplastic polyester of 5-60%, the glass fibre of 5-60%, and the polyvinyl resin of 5-60% and the auxiliary agent of 2-10%, described per-cent is weight percentage.
Further, described matrix material comprises the thermoplastic polyester of 15-50%, the glass fibre of 15-50%, the polyvinyl resin of 15-50% and the auxiliary agent of 2-8%.
Further, described thermoplastic polyester accounts for the 10-30% of matrix material gross weight, 25-45%, 15%, 20%, 35%, 36%, 40% or 55%; Described glass fibre accounts for the 10-30% of matrix material gross weight, 25-45%, 15%, 20%, 26%, 32%, 35%, 36%, 40% or 55%; Described polyvinyl resin accounts for the 10-30% of matrix material gross weight, 20-40%, 15%, 20%, 25%, 27%, 35%, 36%, 45% or 55%; Described auxiliary agent accounts for the 4-9% of matrix material gross weight, 5-10%, 3%, 6%, 7% or 8%.
Further, described thermoplastic polyester is selected from polyethylene terephthalate (PET) or polybutylene terephthalate (PBT).
Further, described glass fibre comprises short glass fiber, continuous Glass Fiber Mat, long glass fibres (abbreviation roving glass fiber).
Further, described polyvinyl resin comprises high density polyethylene(HDPE), linear low density polyethylene.
Further, described auxiliary agent comprises oxidation inhibitor, coupling agent, nucleator and toughner.
Further, described oxidation inhibitor addition is 0.5-2%; Described coupling agent is silane coupling agent, and addition is 0.5-5%; Described nucleator is sorbose alcohols or organophosphate, and addition is 0.1-1%; Described toughner addition is 0.5-5%.The interpolation total amount of described oxidation inhibitor, coupling agent, nucleator and toughner accounts for the 2-10% of matrix material gross weight.
Further, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%) or maleic anhydride grafted linear low density polyethylene (percentage of grafting >=0.5%).
Described oxidation inhibitor comprises the combination of a kind of in antioxidant 1010, antioxidant 1076, irgasfos 168 or at least two kinds; Described silane coupling agent is selected from KH550, KH560, KH570 or KH792; The preferred Millad3988 of described nucleator, NU-100, NA-10.
Further, the content range of described toughner is 1-5%, 1.5-4%, and 2%, 2.5%, 3%, 3.5%, or 4.5%.
Above-mentioned nucleator is by changing poly crystallization behavior, improved the physical and mechanical propertiess such as tensile strength, rigidity, heat-drawn wire, shock resistance, creep resistance of product; Toughner can increase substantially or mechanical mechanics property and the thermal characteristics of enhanced polyethylene, promotes cementability and the consistency of polar material and non-polar material; The active gene that silane coupling agent contains two kinds of different in kinds on same Siliciumatom, can there is chemical reaction with the surface of inorganics in a kind of group; Another kind of group can react with organic polymer, thereby it is well bonding that two kinds of very large materials of nature difference are obtained, when silane coupling agent addition is too low, can cause glass fibre consistency bad, the too high matrix material high cost that easily causes of addition, over-all properties declines.
Further, described matrix material comprises the PET resin of 10-20%, the short glass fiber of 45-55%, the polyvinyl resin of 25-35%, the oxidation inhibitor of 0.5-2%, the silane coupling agent of 0.5-5%, the nucleator of 0.1-1%, the toughner of 0.5-5%, described toughner is selected from maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%) or maleic anhydride grafted linear low density polyethylene (percentage of grafting >=0.5%).Preferably, aforementioned polyvinyl resin comprises linear low density polyethylene and high density polyethylene(HDPE), and wherein, the content of linear low density polyethylene is 20-30%, and the content of high density polyethylene(HDPE) is 5-15%.
Further, described matrix material comprises the PET resin of 15-50%, the short glass fiber of 15-50%, the linear low density polyethylene of 15-50%, the oxidation inhibitor of 0.5-2%, the silane coupling agent of 0.5-3%, the nucleator of 0.1-1%, the toughner of 0.5-3%.
Further, described matrix material comprises PBT resin or the PET resin of 15-50%, the short glass fiber of 15-50% or continuous Glass Fiber Mat, the high density polyethylene(HDPE) of 15-50% or linear low density polyethylene, the antioxidant 1010 of 0.5-2%, antioxidant 1076 or its combination, the Silane coupling agent KH550 of 0.5-5% or KH792, nucleator Millad3988 or the NU-100 of 0.1-1%, maleic anhydride graft high density polyethylene(HDPE) or the maleic anhydride grafted linear low density polyethylene of 0.5-5%.
Further, described matrix material comprises the PBT resin of 20-40%, the short glass fiber of 20-40%, the high density polyethylene(HDPE) of 20-40% or linear low density polyethylene, the irgasfos 168 of 0.5-2%, antioxidant 1076 or its combination, silane coupling agent KH560 or the KH792 of 0.5-5%, nucleant agent N A-10 or the NU-100 of 0.1-1%, the maleic anhydride graft high density polyethylene(HDPE) of 0.5-5%.
Further, described matrix material comprises the PET resin of 20-40%, the roving glass fiber of 20-40%, the high density polyethylene(HDPE) of 20-40% or linear low density polyethylene, the irgasfos 168 of 0.5-2%, antioxidant 1076 or its combination, silane coupling agent KH570 or the KH792 of 0.5-5%, nucleant agent N A-10 or the NU-100 of 0.1-1%, the maleic anhydride graft high density polyethylene(HDPE) of 0.5-5%.
The present invention also provides the preparation method of above-mentioned polyethylene toughened thermoplastic polyester composite, and described preparation method comprises the steps:
(1) take thermoplastic polyester, polyethylene and auxiliary agent, at high-speed mixer, mix;
(2) mixture of step (1) gained is added in the spout of twin screw extruder, from first venting port, adds glass fibre, mixture is extruded slivering by screw rod shearing, after mixing from die head, cooling and dicing, and packing, obtains described matrix material.
Further, described forcing machine spout is 200-280 ℃ to the temperature of extrusion die, and screw speed is 400-800rpm.
Further, mixing time is 3-5 minute in above-mentioned steps (1), and in described step (2), from spout, the temperature distribution to extrusion die is 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃ to forcing machine; Extruder screw length-to-diameter ratio (L/D) is 38-60:1.
Compared with prior art, polyethylene toughened thermoplastic polyester composite cost provided by the invention is lower, good mechanical performance, good heat resistance, machine-shaping is convenient, by glass fibre, strengthen toughness reinforcing, and preferably each constituent materials and proportioning thereof, make the physicals of matrix material excellent, can overcome thermoplastic polyester forming process difficulty, the defects such as toughness of material deficiency, have improved mechanical property and the thermal property of matrix material effectively, its preparation method technique is simple, easy handling.
Embodiment
The present invention's material and facility used is current material and equipment, and for example: thermoplastic polyester PET and PBT are engineering grade, polyethylene adopts injection grade, all can on market, buy; Described glass fibre, oxidation inhibitor, coupling agent, toughner and nucleator are product common on market.The Millad3988 that nucleator can select U.S. Milliken chemical company to produce, or the NA-10 of Japanese rising sun electrification company production.
The preparation method of polyethylene toughened thermoplastic polyester composite provided by the invention comprises the steps:
(1) take thermoplastic polyester, polyethylene and auxiliary agent, at high-speed mixer mixing 3-5 minute;
(2) mixture of step (1) gained is added in the spout of twin screw extruder, from first venting port, adds glass fibre, mixture is extruded slivering by screw rod shearing, after mixing from die head, cooling and dicing, and packing, obtains described matrix material.
Wherein, each district of forcing machine and die head temperature are respectively 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃, and screw speed is 400-800rpm, and strainer screen aperture is 50 μ m.
The testing standard of mechanical property, heat-drawn wire and the flame retardant properties of polyethylene toughened thermoplastic polyester composite provided by the invention is as follows:
Tensile property: press GB/T 1040-2006 standard testing, adopt Instron 1185 type universal testing machines, probe temperature is 23 ℃, and clamping length is 60mm, and draw speed is 5mm/min.
Flexural strength: press GB/T 9341-2008 standard testing.
Cantilever beam impact strength: press GB/T 1843-2008 standard testing.
Heat-drawn wire: press GB/T 1634-2004 standard testing, use the C method of 8Mpa stress in bending.
The matrix material of following embodiment gained, at 250-300 ℃, is used plastic-injection moulding machine, and pellet is shaped to the laboratory sample for mechanical property and thermotolerance test.
Per-cent in following embodiment is all weight percentage.
Embodiment 1
Take in proportion 50%PET resin, 40% linear low density polyethylene, 0.5% antioxidant 1010,0.5% irgasfos 168,0.5%Millad3988,1.5%KH550,2% maleic anhydride graft high density polyethylene(HDPE), at high-speed mixer mixing 3-5 minute, rotating speed of agitator 1300rpm, adds the material being mixed in the spout of twin screw extruder; From first venting port, add 5% short glass fiber, the shearing of mixture by screw rod, from die head, extrude slivering after mixing, cooling and dicing, is packaged to be composite A 1.Wherein each district and die head temperature are 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃, and screw speed is 600rpm, and strainer screen aperture is 50 μ m.
Embodiment 2
Take in proportion 60%PET resin, 5% linear low density polyethylene, 1% antioxidant 1010,0.5%NU-100,1.5%KH560,2% maleic anhydride grafted linear low density polyethylene, at high-speed mixer mixing 3-5 minute, rotating speed of agitator 1300rpm, adds the material being mixed in the spout of twin screw extruder; From first venting port, add 30% short glass fiber, the shearing of mixture by screw rod, from die head, extrude slivering after mixing, cooling and dicing, is packaged to be composite A 2.Wherein each district and die head temperature are 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃, and screw speed is 600rpm, and strainer screen aperture is 50 μ m.
Embodiment 3
Claim in proportion 5%PET resin, 27% high density polyethylene(HDPE), 1.5% antioxidant 1076,0.5%NA-10,2%KH570,4% maleic anhydride grafted linear low density polyethylene, at high-speed mixer mixing 3-5 minute, rotating speed of agitator 1300rpm, adds the material being mixed in the spout of twin screw extruder; From first venting port, add 60% short glass fiber, the shearing of mixture by screw rod, from die head, extrude slivering after mixing, cooling and dicing, is packaged to be composite A 3.Wherein each district and die head temperature are 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃, and screw speed is 600rpm, and strainer screen aperture is 50 μ m.
Embodiment 4
Take in proportion 10%PET resin, 60% high density polyethylene(HDPE), 2% antioxidant 1076,0.2%NA-10,3.8%KH792,4% maleic anhydride graft high density polyethylene(HDPE), at high-speed mixer mixing 3-5 minute, rotating speed of agitator 1300rpm, adds the material being mixed in the spout of twin screw extruder; From first venting port, add 20% short glass fiber, the shearing of mixture by screw rod, from die head, extrude slivering after mixing, cooling and dicing, is packaged to be composite A 4.Wherein each district and die head temperature are 200-230 ℃, 220-250 ℃, 230-260 ℃, 240-270 ℃, 250-280 ℃, and screw speed is 600rpm, and strainer screen aperture is 50 μ m.
Table 1 composite A 1-A4 and pure PET, pure PE performance test table
| Project | A1 | A2 | A3 | A4 | Pure PET | Pure PE |
| Tensile strength/MPa | 63 | 56 | 64 | 58 | 42 | 25 |
| Elongation at break/% | 253 | 286 | 297 | 276 | 110 | 165 |
| Flexural strength/MPa | 150 | 142 | 148 | 153 | 92 | 158 |
| Shock strength/Jm -1 | 648 | 593 | 684 | 623 | 230 | 380 |
| Heat-drawn wire/℃ | 150 | 157 | 152 | 153 | 78 | 50 |
Embodiment 5
Prepare according to the method described above composite A 5, described matrix material comprises 15% PBT resin, 50% short glass fiber, 30% high density polyethylene(HDPE), 0.5% antioxidant 1076,0.5% Silane coupling agent KH550,0.6% nucleator Millad3988,3.4% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 6
Prepare according to the method described above composite A 6, described matrix material comprises 25% PET resin, 15% long glass fibres, 50% linear low density polyethylene resin, 2% antioxidant 1076,5% silane coupling agent KH792,1% nucleant agent N U-100,2% maleic anhydride grafted linear low density polyethylene.
Embodiment 7
Prepare according to the method described above composite A 7, described matrix material comprises 45% PET resin, 32% continuous Glass Fiber Mat, 15% high-density polyethylene resin, 1% antioxidant 1010 and 0.5% antioxidant 1076,1% Silane coupling agent KH550,0.5% nucleator Millad3988,5% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 8
Prepare according to the method described above composite A 8, described matrix material comprises 36% PET resin, 40% long glass fibres, 20% high-density polyethylene resin, 1% irgasfos 168,1.5% silane coupling agent KH570,0.6% nucleant agent N A-10,0.9% maleic anhydride grafted linear low density polyethylene.
Embodiment 9
Prepare according to the method described above composite A 9, described matrix material comprises 40% PET resin, 26% continuous Glass Fiber Mat, 25% linear low density polyethylene resin, 0.8% irgasfos 168 and 0.5% antioxidant 1076,3% Silane coupling agent KH550,1% nucleant agent N A-10,3.7% maleic anhydride grafted linear low density polyethylene.
Embodiment 10
Prepare according to the method described above composite A 10, described matrix material comprises 31% PET resin, 31% short glass fiber, 31% linear low density polyethylene resin, 1.5% antioxidant 1076,2% silane coupling agent KH792,0.8% nucleant agent N U-100,2.7% maleic anhydride graft high density polyethylene(HDPE).
Table 2 composite A 5-A10 performance test table
| Project | A5 | A6 | A7 | A8 | A9 | A10 |
| Tensile strength/MPa | 58 | 63 | 64 | 62 | 68 | 64 |
| Elongation at break/% | 223 | 236 | 257 | 246 | 228 | 244 |
| Flexural strength/MPa | 164 | 148 | 162 | 138 | 152 | 180 |
| Shock strength/Jm -1 | 537 | 604 | 642 | 668 | 642 | 656 |
| Heat-drawn wire/℃ | 142 | 151 | 136 | 148 | 147 | 164 |
Embodiment 11
Prepare according to the method described above composite A 11, described matrix material comprises 20% PBT resin, 40% short glass fiber, 35% high density polyethylene(HDPE), 1% oxidation inhibitor, 0.5% silane coupling agent, 0.5% nucleator, 3% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 12
Prepare according to the method described above composite A 12, described matrix material comprises 25% PET resin, 27% long glass fibres, 40% linear low density polyethylene resin, 2% oxidation inhibitor, 3% silane coupling agent, 0.5% nucleator, 2.5% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 13
Prepare according to the method described above composite A 13, described matrix material comprises 40% PET resin, 35% long glass fibres, 20% high-density polyethylene resin, 1% antioxidant 1076 and 0.5% irgasfos 168,1% silane coupling agent, 0.1% nucleator, 2.4% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 14
Prepare according to the method described above composite A 14, described matrix material comprises 35% PET resin, 35% long glass fibres, 20% high-density polyethylene resin, 1% oxidation inhibitor, 3.5% silane coupling agent, 0.8% nucleator, 4.7% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 15
Prepare according to the method described above composite A 15, described matrix material comprises 40% PET resin, 20% short glass fiber, 31% linear low density polyethylene resin, 1.5% irgasfos 168 and 0.5% antioxidant 1076,2% silane coupling agent, 1% nucleator, 4% maleic anhydride graft high density polyethylene(HDPE).
Embodiment 16
Prepare according to the method described above composite A 16, described matrix material comprises 30% PET resin, 30% short glass fiber, 35% linear low density polyethylene resin, 1% oxidation inhibitor, 2% silane coupling agent, 1% nucleator, 1% maleic anhydride graft high density polyethylene(HDPE).
Table 3 composite A 11-A16 performance test table
| Project | A11 | A12 | A13 | A14 | A15 | A16 |
| Tensile strength/MPa | 62 | 66 | 68 | 54 | 59 | 60 |
| Elongation at break/% | 238 | 242 | 239 | 267 | 205 | 285 |
| Flexural strength/MPa | 185 | 164 | 159 | 147 | 163 | 135 |
| Shock strength/Jm -1 | 647 | 584 | 620 | 642 | 674 | 657 |
| Heat-drawn wire/℃ | 138 | 128 | 158 | 171 | 140 | 151 |
Embodiment 17
Prepare according to the method described above composite A 17, described matrix material comprises 10% PET resin, 55% short glass fiber, 25% linear low density polyethylene, 2% oxidation inhibitor, 3% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 18
Prepare according to the method described above composite A 18, described matrix material comprises 20% PET resin, 45% short glass fiber, 33% high density polyethylene(HDPE), 0.5% oxidation inhibitor, 0.5% silane coupling agent, 0.2% nucleator, 0.8% toughner, described toughner is maleic anhydride grafted linear low density polyethylene (percentage of grafting >=0.5%).
Embodiment 19
Prepare according to the method described above composite A 19, described matrix material comprises 15% PET resin, 50% short glass fiber, 25% linear low density polyethylene, 1% oxidation inhibitor, 4% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 20
Prepare according to the method described above composite A 20, described matrix material comprises 10% PET resin, 46% short glass fiber, 35% linear low density polyethylene, 1% oxidation inhibitor, 5% silane coupling agent, 1% nucleator, 2% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 21
Prepare according to the method described above composite A 21, described matrix material comprises 17% PET resin, 45% short glass fiber, 30% high density polyethylene(HDPE), 0.5% oxidation inhibitor, 2% silane coupling agent, 0.5% nucleator, 5% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 22
Prepare according to the method described above composite A 22, described matrix material comprises 10% PET resin, 45% short glass fiber, 35% linear low density polyethylene, 1% oxidation inhibitor, 4% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Table 4 composite A 17-A22 performance test table
| Project | A17 | A18 | A19 | A20 | A21 | A22 |
| Tensile strength/MPa | 54 | 68 | 72 | 64 | 69 | 63 |
| Elongation at break/% | 268 | 289 | 265 | 275 | 263 | 256 |
| Flexural strength/MPa | 174 | 171 | 168 | 157 | 164 | 151 |
| Shock strength/Jm -1 | 625 | 639 | 619 | 625 | 616 | 679 |
| Heat-drawn wire/℃ | 128 | 146 | 136 | 153 | 163 | 157 |
Embodiment 23
Prepare according to the method described above composite A 23, described matrix material comprises 10% PET resin, 55% short glass fiber, 20% linear low density polyethylene, 5% high density polyethylene(HDPE), 2% oxidation inhibitor, 3% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 24
Prepare according to the method described above composite A 24, described matrix material comprises 20% PET resin, 45% short glass fiber, 25% linear low density polyethylene, 8% high density polyethylene(HDPE), 0.5% oxidation inhibitor, 0.5% silane coupling agent, 0.2% nucleator, 0.8% toughner, described toughner is maleic anhydride grafted linear low density polyethylene (percentage of grafting >=0.5%).
Embodiment 25
Prepare according to the method described above composite A 25, described matrix material comprises 15% PET resin, 50% short glass fiber, 20% linear low density polyethylene, 5% high density polyethylene(HDPE), 1% oxidation inhibitor, 4% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 26
Prepare according to the method described above composite A 26, described matrix material comprises 10% PET resin, 46% short glass fiber, 30% linear low density polyethylene, 5% high density polyethylene(HDPE), 1% oxidation inhibitor, 5% silane coupling agent, 1% nucleator, 2% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 27
Prepare according to the method described above composite A 27, described matrix material comprises 17% PET resin, 45% short glass fiber, 20% linear low density polyethylene, 10% high density polyethylene(HDPE), 0.5% oxidation inhibitor, 2% silane coupling agent, 0.5% nucleator, 5% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Embodiment 28
Prepare according to the method described above composite A 28, described matrix material comprises 10% PET resin, 45% short glass fiber, 20% linear low density polyethylene, 15% high density polyethylene(HDPE), 1% oxidation inhibitor, 4% silane coupling agent, 1% nucleator, 4% toughner, described toughner is maleic anhydride graft high density polyethylene(HDPE) (percentage of grafting >=0.5%).
Table 5 composite A 23-A28 performance test table
| Project | A23 | A24 | A25 | A26 | A27 | A28 |
| Tensile strength/MPa | 104 | 98 | 102 | 94 | 99 | 103 |
| Elongation at break/% | 298 | 301 | 295 | 295 | 293 | 296 |
| Flexural strength/MPa | 194 | 191 | 198 | 197 | 194 | 191 |
| Shock strength/Jm -1 | 685 | 679 | 669 | 695 | 686 | 709 |
| Heat-drawn wire/℃ | 188 | 196 | 176 | 173 | 169 | 177 |
Comparative example 1
Prepare according to the method described above matrix material B1, described matrix material comprises 4% PBT resin, 33% short glass fiber, 61% high-density polyethylene resin, 0.5% antioxidant 1076,0.5% silane coupling agent KH560,0.5% nucleant agent N A-10,0.5% maleic anhydride graft high density polyethylene(HDPE).
Thermoplastic resin content in above-mentioned matrix material is too low, polyvinyl resin too high levels.The correlated performance of this matrix material is in Table 6.
Comparative example 2
Prepare according to the method described above matrix material B2, described matrix material comprises 25% PET resin, 25% long glass fibres, 35% linear low density polyethylene resin, 2% antioxidant 1076,8% silane coupling agent KH792,2% nucleant agent N U-100,3% maleic anhydride graft high density polyethylene(HDPE).
Silane coupling agent in above-mentioned matrix material and nucleator too high levels.The correlated performance of this matrix material is in Table 6.
Comparative example 3
Prepare according to the method described above matrix material B3, described matrix material comprises 40% PET resin, 25% short glass fiber, 30% high-density polyethylene resin, 1.7% irgasfos 168 and 1.5% antioxidant 1076,0.1% silane coupling agent, 1.5% nucleant agent N U-100,0.2% maleic anhydride graft high density polyethylene(HDPE).
Silane coupled agent content in above-mentioned matrix material is too low, nucleator too high levels.The correlated performance of this matrix material is in Table 6.
Comparative example 4
Prepare according to the method described above matrix material B4, described matrix material comprises 55% PET resin, 4% long glass fibres, 31% high-density polyethylene resin, 1% irgasfos 168,3.5% titanate coupling agent, 1% nucleant agent N A-10,4.5% styrene butadiene thermoplasticelastomer (SBS) toughner.
Content of glass fiber in above-mentioned matrix material is too low.The correlated performance of this matrix material is in Table 6.
Table 6 comparative example gained matrix material B1-B4 performance test table
| Project | B1 | B2 | B3 | B4 |
| Tensile strength/MPa | 38 | 44 | 46 | 47 |
| Elongation at break/% | 185 | 200 | 214 | 216 |
| Flexural strength/MPa | 108 | 113 | 124 | 127 |
| Shock strength/Jm -1 | 432 | 468 | 514 | 516 |
| Heat-drawn wire/℃ | 96 | 108 | 116 | 118 |
According to table 1 to the performance test data in table 6, can draw, compare with the matrix material of pure PET or PE resin or other comparative examples, polyethylene toughened thermoplastic polyester composite provided by the invention strengthens toughness reinforcing by glass fibre, and material and the proportioning of preferred each component, make the physicals of matrix material provided by the invention excellent, mechanical property and thermal property are better, and particularly the matrix material of embodiment 23-28 gained, has more excellent mechanical property and thermal property.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and is all encompassed in the scope of the claims of the present invention.
Claims (4)
1. a polyethylene toughened thermoplastic polyester composite, it is characterized in that, described matrix material comprises the PET resin of 10-20%, the short glass fiber of 45-55%, the polyvinyl resin of 25-35%, the oxidation inhibitor of 0.5-2%, the silane coupling agent of 0.5-5%, the nucleator of 0.1-1%, the toughner of 0.5-5%; Described toughner is selected from the maleic anhydride graft high density polyethylene(HDPE) of percentage of grafting >=0.5%, or the maleic anhydride grafted linear low density polyethylene of percentage of grafting >=0.5%; Described polyvinyl resin comprises linear low density polyethylene and high density polyethylene(HDPE), and wherein, the content of linear low density polyethylene is 20-30%, and the content of high density polyethylene(HDPE) is 5-15%; Described per-cent is weight percentage.
2. polyethylene toughened thermoplastic polyester composite according to claim 1, is characterized in that, described nucleator is sorbose alcohols or organophosphate.
3. the preparation method of polyethylene toughened thermoplastic polyester composite according to claim 1 and 2, is characterized in that, described preparation method comprises the steps:
(1) take thermoplastic polyester, polyethylene and auxiliary agent, at high-speed mixer, mix;
(2) mixture of step (1) gained is added in the spout of twin screw extruder, from first venting port, add glass fibre, mixture is extruded slivering from die head, cooling and dicing by screw rod shearing, after mixing, packing, obtains described matrix material.
4. the preparation method of polyethylene toughened thermoplastic polyester composite according to claim 3, is characterized in that, described forcing machine spout is 200-280 ℃ to the temperature of extrusion die, and screw speed is 400-800rpm.
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Address after: Qingfeng Road, Jiangbei District 315000 in Zhejiang city of Ningbo province No. 999 Patentee after: Ningbo, Changyang, Polytron Technologies Inc Address before: 315031 Zhejiang province Jiangbei District of Ningbo City Green Road Zhu Xiang (1) - (4) Patentee before: Ningbo Changyang Technology Co., Ltd. |
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Application publication date: 20130403 Assignee: Ningbo Changlong New Material Co.,Ltd. Assignor: NINGBO SOLARTRON TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000199 Denomination of invention: The invention relates to a polyethylene toughened thermoplastic polyester composite and a preparation method thereof Granted publication date: 20141008 License type: Common License Record date: 20210831 |