CN113956632A - Anti-aging high-performance PET composite material and preparation method thereof - Google Patents
Anti-aging high-performance PET composite material and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- -1 (2, 4-di-tert-butyl) phenyl Chemical group 0.000 claims description 6
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 claims description 2
- ZAAQJFLUOUQAOG-UHFFFAOYSA-N 4-benzyl-2,6-ditert-butylphenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=CC=CC=2)=C1 ZAAQJFLUOUQAOG-UHFFFAOYSA-N 0.000 claims description 2
- 239000007983 Tris buffer Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 4
- 230000003679 aging effect Effects 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 45
- 239000005020 polyethylene terephthalate Substances 0.000 description 45
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 8
- 230000032683 aging Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000021178 picnic Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000003234 polygenic effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an anti-aging high-performance PET composite material and a preparation method thereof, wherein the PET composite material comprises 80-100 parts by weight of PET, 10-20 parts by weight of treated fiber powder and 0.1-0.5 part by weight of antioxidant. The technical scheme is that basalt fibers are ground into fiber powder through a physical method, and finally rare earth ion and TiO supported fiber is prepared2Compared with the fiber sold in the market, the modified PET fiber powder has more excellent mechanical property and better aging property.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to an anti-aging high-performance PET composite material and a preparation method thereof.
Background
Polyethylene terephthalate (PET) is a widely used high molecular polyester resin, and PET has the advantages of good fatigue resistance, good heat resistance, excellent dimensional stability and the like, but the common aging resistance of PET limits the application of PET composite materials in some specific fields.
Disclosure of Invention
The invention aims to provide an anti-aging high-performance PET composite material and a preparation method thereof, and aims to solve the problems that the existing PET composite material is poor in anti-aging performance and influences the application field of the PET composite material.
In order to achieve the purpose, the method is realized by the following technical scheme:
an anti-aging high-performance PET composite material is prepared from the following components in parts by weight:
80-100 parts of PET;
10-20 parts of treated fiber powder;
0.1 to 0.5 portion of antioxidant.
Further, the preparation method of the treated fiber powder comprises the following steps:
(1) weighing a certain amount of basalt fibers, adding the basalt fibers into a grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A;
(2) weighing a certain amount of Pr (NO)3)3▪6H2O, absolute ethyl alcohol and deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) weighing a certain amount of powder A and nano TiO2、Pr(NO3)3Adding the solution B and a dispersant polyacrylamide into a reaction vessel, reacting for 6-8h at normal temperature, filtering, washing, and drying in a vacuum drying oven at 50-70 ℃ for 3-5h to obtain the treated fiber powder.
Further, Pr (NO) in step (2)3)3▪6H2The mass ratio of O, absolute ethyl alcohol and deionized water is (30-40): (60-80): (100-160).
Further, the powder A and the nano TiO in the step (3)2、Pr(NO3)3The mass ratio of the solution B, the dispersant polyacrylamide and the deionized water is (30-40): (12-16): (180-240): (20-30).
Further, the antioxidant is one or a mixture of more of tris (2, 4-di-tert-butyl) phenyl phosphite, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or 1, 3, 5-trimethyl-2, 4, 6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene.
The preparation method of any one of the anti-aging high-performance PET composite materials comprises the following steps:
(1) weighing 80-100 parts of PET, 10-20 parts of treated fiber powder and 0.1-0.5 part of antioxidant, mixing and uniformly stirring to obtain a mixture;
(2) and (2) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material.
Further, the step (2) is specifically as follows:
and (2) putting the mixture obtained in the step (1) into a hopper of a double-screw extruder to extrude and granulate, so as to obtain the PET composite material, wherein the double-screw extruder comprises six temperature zones which are sequentially arranged, the temperature of the first zone is 240-260 ℃, the temperature of the second zone is 280-300 ℃, the temperature of the third zone is 280-300 ℃, the temperature of the fourth zone is 280-300 ℃, the temperature of the fifth zone is 280-300 ℃, the temperature of the sixth zone is 280-300 ℃, the temperature of a machine head is 280-300 ℃, and the rotation speed of a screw is 200-280 r/min.
The invention has the following beneficial effects:
(1) in this application nano-TiO2The function of the method is as follows: first, nanometer TiO2The PET composite material has an induction effect on crystallization of PET, promotes heterogeneous nucleation of the PET, enables crystallization of the PET to be more complete, and improves mechanical properties of the PET composite material. Second, nano TiO2Is an important ultraviolet screening agent, and can improve the aging resistance of the PET composite material.
(2) The atomic structure of the rare earth element Pr in the application has an unfilled electronic layer, and when the electronic layer is irradiated by external light with different wavelengths, the electronic layer can selectively absorb and reflect incident light, so that the electronic layer has a light conversion function and can convert ultraviolet light into visible light. In addition, the rare earth has an activating effect on the basalt fiber, so that the basalt fiber is expanded and relaxed in structure, the surface gap of the basalt fiber is increased, and the nano TiO is increased2The particles can better enter the basalt fiber to promote the nano TiO2By penetration ofTiO2Bonding and adhesion to basalt fibers.
(3) The method comprises the steps of grinding basalt fibers into fiber powder through a physical method, and finally preparing the supported rare earth ions and TiO2Compared with the fiber sold in the market, the modified PET fiber powder has more excellent mechanical property and better aging property.
Detailed Description
The following embodiments are merely exemplary, and can be used to explain and illustrate the technical solutions of the present invention, but should not be construed as limiting the technical solutions of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
The raw materials used in the examples of the invention are as follows:
PET (model 008L), Aclo, canada; basalt fiber, Shandong Polygenic basalt fiber GmbH; pr (NO)3)3▪6H2O, Chengdu ocean chemical Co., Ltd; acetone, Shanghai Square picnic chemical Co., Ltd; nano TiO 22Guangzhou hongwu materials science and technology, Inc.; polyacrylamide, environmental protection technologies, ltd, heonasco; deionized water, beijing baiolai bock technologies ltd; absolute ethanol, denna junteng chemical ltd; antioxidants (type Irganox168, Irganox1010, Irganox1330), from Bassfer.
The test instrument used in the present invention is as follows:
model ZSK30 twin-screw extruder, W & P, Germany; JL-1000 type tensile testing machine, produced by Guangzhou Youcai laboratory instruments; HTL900-T-5B injection molding machine, manufactured by Haita plastics machinery, Inc.; XCJ-500 impact tester, manufactured by Chengde tester; QT-1196 tensile tester, Gaotai detection instruments, Inc. of Dongguan; QD-GJS-B12K model high-speed mixer, HengOde instruments, Beijing.
Preparation example 1
(1) Weighing a certain amount of basalt fibers, adding the basalt fibers into a grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A;
(2) weighing 300gPr (NO)3)3▪6H2O, 600g of absolute ethyl alcohol and 1.0kg of deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) 300g of powder A and 120g of nano TiO are weighed2、1.8kgPr(NO3)3And adding the solution B and 200g of dispersant polyacrylamide into a reaction vessel, reacting for 6h at normal temperature, filtering, washing, and drying in a vacuum drying oven at 50 ℃ for 3h to obtain the treated fiber powder M1.
Example 1
(1) Weighing 80 parts of PET, 10 parts of treated fiber powder M1 and 0.1 part of Irganox1010, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material P1.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 240 ℃, the temperature of the second zone is 280 ℃, the temperature of the third zone is 280 ℃, the temperature of the fourth zone is 280 ℃, the temperature of the fifth zone is 280 ℃, the temperature of the sixth zone is 280 ℃, the temperature of a machine head is 280 ℃ and the rotating speed of a screw is 200 r/min.
Preparation example 2
(1) Weighing a certain amount of basalt fibers, adding the basalt fibers into the grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A.
(2) Weighing 350gPr (NO)3)3▪6H2O, 700g of absolute ethyl alcohol and 1.3kg of deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) 350g of powder A and 140g of nano TiO are weighed2、2.1kgPr(NO3)3Adding the solution B and 250g of dispersant polyacrylamide into a reaction vessel, reacting for 7h at normal temperature, filtering, washing, and drying in a vacuum drying oven at 60 ℃ for 4h to obtain the treated fiber powder M2.
Example 2
(1) Weighing 90 parts of PET, 15 parts of treated fiber powder M2, 0.3 part of treated light stabilizer N2, 0.1 part of Irganox1010 and 0.2 part of Irganox168, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material P2.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 260 ℃, the temperature of the second zone is 300 ℃, the temperature of the third zone is 300 ℃, the temperature of the fourth zone is 300 ℃, the temperature of the fifth zone is 300 ℃, the temperature of the sixth zone is 300 ℃, the temperature of the machine head is 300 ℃ and the screw rotation speed is 280 r/min.
Preparation example 3
(1) Weighing a certain amount of basalt fibers, adding the basalt fibers into a grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A;
(2) weighing 400gPr (NO)3)3▪6H2O, 800g of absolute ethyl alcohol and 1.6kg of deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) weighing 400g of powder A and 160g of nano TiO2、2.4kgPr(NO3)3Adding the solution B and 300g of dispersant polyacrylamide into a reaction vessel, reacting for 8h at normal temperature, filtering, washing, and drying in a vacuum drying oven at 70 ℃ for 5h to obtain the treated fiber powder M3.
Example 3
(1) Weighing 100 parts of PET, 20 parts of treated fiber powder M3, 0.2 part of Irganox1330, 0.1 part of Irganox168 and 0.2 part of Irganox1010, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material P3.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 250 ℃, the temperature of the second zone is 290 ℃, the temperature of the third zone is 290 ℃, the temperature of the fourth zone is 290 ℃, the temperature of the fifth zone is 290 ℃, the temperature of the sixth zone is 290 ℃, the temperature of the machine head is 290 ℃, and the rotating speed of the screw is 240 r/min.
Preparation example 4
(1) Weighing a certain amount of basalt fibers, adding the basalt fibers into the grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A.
(2) Weighing 380gPr (NO)3)3▪6H2O, 670g absolute ethyl alcohol and 1.35kg deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) weighing 365g of powder A and 145g of nano TiO2、290gPr(NO3)3And adding the solution B and a dispersant polyacrylamide into a reaction vessel, reacting for 6h at normal temperature, filtering, washing, and drying for 5h in a vacuum drying oven at 55 ℃ to obtain the treated fiber powder M4.
Example 4
(1) Weighing 95 parts of PET, 18 parts of treated fiber powder M4, 0.1 part of Irganox1010 and 0.2 part of Irganox1330, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material P4.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 245 ℃, the temperature of the second zone is 285 ℃, the temperature of the third zone is 285 ℃, the temperature of the fourth zone is 285 ℃, the temperature of the fifth zone is 285 ℃, the temperature of the sixth zone is 285 ℃, the temperature of a machine head is 285 ℃, and the rotating speed of a screw is 255 r/min.
Preparation example 5
(1) Weighing a certain amount of basalt fibers, adding the basalt fibers into the grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A.
(2) Weighing 395gPr (NO)3)3▪6H2O, 675g of absolute ethyl alcohol and 1.15kg of deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) 305g of powder A and 155g of nano TiO are weighed2、2.35kgPr(NO3)3Adding the solution B and 245g of dispersant polyacrylamide into a reaction vessel, reacting for 7h at normal temperature, filtering, washing, and drying for 4h in a vacuum drying oven at 65 ℃ to obtain treated fiber powder M5.
Example 5
(1) Weighing 85 parts of PET, 12 parts of treated fiber powder M4, 0.1 part of Irganox1010 and 0.1 part of Irganox168, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material P5.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 250 ℃, the temperature of the second zone is 295 ℃, the temperature of the third zone is 295 ℃, the temperature of the fourth zone is 295 ℃, the temperature of the fifth zone is 295 ℃, the temperature of the sixth zone is 295 ℃, the temperature of a machine head is 295 ℃, and the rotating speed of a screw is 270 r/min.
Comparative example 1
(1) Weighing 85 parts of PET, 0.1 part of Irganox1010 and 0.1 part of Irganox168, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material D1.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 250 ℃, the temperature of the second zone is 295 ℃, the temperature of the third zone is 295 ℃, the temperature of the fourth zone is 295 ℃, the temperature of the fifth zone is 295 ℃, the temperature of the sixth zone is 295 ℃, the temperature of a machine head is 295 ℃, and the rotating speed of a screw is 270 r/min.
Comparative example 2
(1) Weighing 85 parts of PET, 12 parts of basalt fiber, 0.1 part of Irganox1010 and 0.1 part of Irganox168, mixing and uniformly stirring to obtain a mixture;
(2) and (3) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material D2.
Wherein the temperature and the screw rotating speed of each area of the double-screw extruder are respectively as follows: the temperature of the first zone is 250 ℃, the temperature of the second zone is 295 ℃, the temperature of the third zone is 295 ℃, the temperature of the fourth zone is 295 ℃, the temperature of the fifth zone is 295 ℃, the temperature of the sixth zone is 295 ℃, the temperature of a machine head is 295 ℃, and the rotating speed of a screw is 270 r/min.
The PET composite materials prepared in the above examples 1-5 and comparative examples 1-2 were molded into bars by an injection molding machine and the test data are as follows:
as can be seen from the above table data;
1. examples 1 to 5 are better than comparative example 1 in mechanical properties and aging resistance, which shows that the mechanical properties and aging resistance of the PET of the present invention are greatly improved compared with those of conventional PET.
2. The mechanical property and the ageing resistance of the PET composite material are better than those of the PET composite material in the embodiment 1-5 compared with the comparative example 2, which shows that the mechanical property and the ageing resistance of the PET composite material can be better improved by adding the fiber powder treated by the method compared with basalt fiber.
The technical scheme has very important significance for expanding the application field of the PET composite material.
The above disclosure is only for the purpose of describing several embodiments of the present application, but the present application is not limited thereto, and any variations that can be considered by those skilled in the art are intended to fall within the scope of the present application.
Claims (7)
1. The anti-aging high-performance PET composite material is characterized by being prepared from the following components in parts by weight:
80-100 parts of PET;
10-20 parts of treated fiber powder;
0.1 to 0.5 portion of antioxidant.
2. The anti-aging high-performance PET composite material according to claim 1, wherein the preparation method of the treated fiber powder is as follows:
(1) weighing a certain amount of basalt fibers, adding the basalt fibers into a grinding body, grinding, and sieving with a 500-mesh sieve to obtain powder A;
(2) weighing a certain amount of Pr (NO)3)3▪6H2O, absolute ethyl alcohol and deionized water are added into a reaction vessel to prepare Pr (NO3)3Solution B;
(3) weighing a certain amount of powder A and nano TiO2、Pr(NO3)3Solution B, dispersant polypropyleneAdding acid amine into a reaction vessel, reacting for 6-8h at normal temperature, filtering, washing, and drying in a vacuum drying oven at 50-70 ℃ for 3-5h to obtain the treated fiber powder.
3. The anti-aging high performance PET composite material according to claim 2, characterized in that Pr (NO) in step (2)3)3▪6H2The mass ratio of O, absolute ethyl alcohol and deionized water is (30-40): (60-80): (100-160).
4. The anti-aging high-performance PET composite material as claimed in claim 2, wherein the powder A and the nano TiO in the step (3)2、Pr(NO3)3The mass ratio of the solution B, the dispersant polyacrylamide and the deionized water is (30-40): (12-16): (180-240): (20-30).
5. The anti-aging high-performance PET composite material as claimed in claim 1, wherein the antioxidant is one or a mixture of more of tris (2, 4-di-tert-butyl) phenyl phosphite, tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or 1, 3, 5-trimethyl-2, 4, 6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene.
6. The preparation method of the anti-aging high-performance PET composite material according to any one of claims 1 to 5, characterized by comprising the following steps:
(1) weighing 80-100 parts of PET, 10-20 parts of treated fiber powder and 0.1-0.5 part of antioxidant, mixing and uniformly stirring to obtain a mixture;
(2) and (2) extruding and granulating the mixture obtained in the step (1) from an extruder to obtain the PET composite material.
7. The preparation method of the anti-aging high-performance PET composite material as claimed in claim 6, wherein the step (2) is specifically:
and (2) putting the mixture obtained in the step (1) into a hopper of a double-screw extruder to extrude and granulate, so as to obtain the PET composite material, wherein the double-screw extruder comprises six temperature zones which are sequentially arranged, the temperature of the first zone is 240-260 ℃, the temperature of the second zone is 280-300 ℃, the temperature of the third zone is 280-300 ℃, the temperature of the fourth zone is 280-300 ℃, the temperature of the fifth zone is 280-300 ℃, the temperature of the sixth zone is 280-300 ℃, the temperature of a machine head is 280-300 ℃, and the rotation speed of a screw is 200-280 r/min.
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