CN104672813A - Core-shell-particle-toughened high-strength PET (polyethylene terephthalate) material and preparation method thereof - Google Patents
Core-shell-particle-toughened high-strength PET (polyethylene terephthalate) material and preparation method thereof Download PDFInfo
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- CN104672813A CN104672813A CN201310630776.7A CN201310630776A CN104672813A CN 104672813 A CN104672813 A CN 104672813A CN 201310630776 A CN201310630776 A CN 201310630776A CN 104672813 A CN104672813 A CN 104672813A
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Abstract
The invention discloses a core-shell-particle-toughened high-strength PET (polyethylene terephthalate) material and a preparation method thereof. The core-shell-particle-toughened high-strength PET material is composed of the following components in percentage by mass: 60-90% of PET, 5-15% of inorganic particle, 5-15% of elastomer, 0.5-2% of unsaturated graft compound, 0.1-1% of initiator, 0.5-2% of nucleating agent, 0.5-2% of dispersing agent and 0.1-1% of antioxidant. Compared with the prior art, the inorganic particles subjected to surface pretreatment and elastomer interact and generate grafting reaction to form the core-shell structure using the inorganic particles as the core and the elastomer as the shell, and the core-shell structure can perform synergic toughening and reinforcement on the PET, thereby greatly enhancing the mechanical strength, notch impact toughness, heat resistance and the like of the PET. The core-shell-particle-toughened high-strength PET material can be widely used in the fields of automobiles, electronic and electric appliances, packaging and the like.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically a kind of Toughened With Core-Shell Particles high-strength PET material and preparation method thereof.
Background technology
Polyethylene terephthalate (PET) is one of main raw material of synthon.It has the premium propertiess such as wear resistance, thermotolerance, electrical insulating property and chemical proofing, is widely used in synthesis polyster fibre and thin film fabrication, civilian blowing, can also be used for machinery, electronics, automobile, electrical equipment manufacture and the consumer's goods as engineering plastics.But because the second-order transition temperature of PET, fusing point are higher, under the molding temperature usually adopted, crystallization velocity is comparatively slow and reduce with the increase of resin relative molecular mass, crystalline texture is uneven, product surface is coarse, low in glossiness, impelling strength is also bad, thus hinders PET resin application in some aspects.Therefore, toughening modifying, accelerate the crystallization velocity of PET, thus improve processing characteristics and improve shock strength and just become PET as the key of engineering plastics.
Summary of the invention
The object of the present invention is to provide a kind of take inorganic particulate as core, the elastomerics Toughened With Core-Shell Particles high-strength PET material that is shell and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Toughened With Core-Shell Particles high-strength PET material, and its component by mass percent proportioning is: PET 60% ~ 90%, inorganic particulate 5% ~ 15%, elastomerics 5% ~ 15%, unsaturated graft compound 0.5% ~ 2%, initiator 0.1% ~ 1%, nucleator 0.5% ~ 2%, dispersion agent 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 1%.
Described PET is polyethylene terephthalate.
Described inorganic particulate is the talcum powder of particle diameter between 0.01 μm ~ 20 μm, relative density 2.7 ~ 2.8g/cm
3, there is filling, strengthen and nucleation modification effect.
Described elastomerics is ethylene-octene copolymer.
Described unsaturated graft compound is the unsaturated organic compound containing carboxyl or acid anhydrides, comprises the one in vinylformic acid, 2-butylene acid, maleic acid, Sorbic Acid, itaconic anhydride, maleic anhydride.
Described initiator is 2,2'-Azobis(2,4-dimethylvaleronitrile).
Described nucleator is the one in ethylene-acrylic acid sodium ion polymkeric substance, ethylene-methyl methacrylate sodium ion polymkeric substance, sodium stearate, Sodium Benzoate.
Described dispersion agent is AClyn lower molecular weight ionomer dispersion agent.
Described oxidation inhibitor is the compound of primary antioxidant 1076 and auxiliary anti-oxidant 168.
The preparation method of above-mentioned a kind of Toughened With Core-Shell Particles high-strength PET material, comprises the following steps:
(1) by PET at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, inorganic particulate at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by;
(2) taking dried inorganic particulate by weight ratio, to add barrel temperature be in 25 DEG C ~ 70 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the unsaturated graft compound and initiator that take by weight ratio is added, stir 10 ~ 60 minutes, add the elastomerics taken by weight ratio again, stir 10 ~ 15 minutes;
(3) then add in high-speed mixer and take dried PET, nucleator, dispersion agent and oxidation inhibitor by weight ratio, continue stirring 15 ~ 45 minutes, discharging;
(4) extrude after above-mentioned material being added the abundant melt blending of twin screw extruder, granulation, obtain a kind of Toughened With Core-Shell Particles high-strength PET material of the present invention.
The invention has the beneficial effects as follows, compared with prior art, with the interphase interaction of elastomerics and graft reaction occurs after the present invention adopts surface of inorganic particles pre-treatment, the nucleocapsid structure that formation is core with inorganic particulate, elastomerics is shell strengthens PET coordination plasticizing, thus greatly increase PET mechanical strength, notch impact toughness and thermotolerance etc., the fields such as automobile, electronic apparatus, packaging can be widely used in.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
A kind of Toughened With Core-Shell Particles high-strength PET material, its component by mass percent proportioning is: the compound 0.6% of PET 80%, the particle diameter talcum powder 10% between 0.01 μm ~ 20 μm, ethylene-octene copolymer 5%, vinylformic acid 1.2%, 2,2'-Azobis(2,4-dimethylvaleronitrile) 0.2%, ethylene-acrylic acid sodium ion polymkeric substance 1.5%, AClyn lower molecular weight ionomer dispersion agent 1.5%, primary antioxidant 1076 and auxiliary anti-oxidant 168.
Preparation method: (1) by PET at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, the talcum powder of particle diameter between 0.01 μm ~ 20 μm at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by; (2) taking dried talcum powder by weight ratio, to add barrel temperature be in 25 DEG C ~ 70 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the vinylformic acid and 2,2'-Azobis(2,4-dimethylvaleronitrile) that take by weight ratio is added, stir 10 ~ 60 minutes, add the ethylene-octene copolymer taken by weight ratio again, stir 10 ~ 15 minutes; (3) in high-speed mixer, then add the compound taking dried PET, ethylene-acrylic acid sodium ion polymkeric substance, AClyn lower molecular weight ionomer dispersion agent and primary antioxidant 1076 and auxiliary anti-oxidant 168 by weight ratio, continue stirring 15 ~ 45 minutes, discharging; (4) extrude after above-mentioned material being added the abundant melt blending of twin screw extruder, granulation, obtain a kind of Toughened With Core-Shell Particles high-strength PET material of the present invention.
Embodiment 2:
A kind of Toughened With Core-Shell Particles high-strength PET material, its component by mass percent proportioning is: the compound 0.5% of PET 70%, the particle diameter talcum powder 15% between 0.01 μm ~ 20 μm, ethylene-octene copolymer 10%, maleic acid 2%, 2,2'-Azobis(2,4-dimethylvaleronitrile) 0.5%, ethylene-methyl methacrylate sodium ion polymkeric substance 1%, AClyn lower molecular weight ionomer dispersion agent 1%, primary antioxidant 1076 and auxiliary anti-oxidant 168.
Preparation method: (1) by PET at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, the talcum powder of particle diameter between 0.01 μm ~ 20 μm at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by; (2) taking dried talcum powder by weight ratio, to add barrel temperature be in 25 DEG C ~ 70 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic acid and 2,2'-Azobis(2,4-dimethylvaleronitrile) that take by weight ratio is added, stir 10 ~ 60 minutes, add the ethylene-octene copolymer taken by weight ratio again, stir 10 ~ 15 minutes; (3) in high-speed mixer, then add the compound taking dried PET, ethylene-methyl methacrylate sodium ion polymkeric substance, AClyn lower molecular weight ionomer dispersion agent and primary antioxidant 1076 and auxiliary anti-oxidant 168 by weight ratio, continue stirring 15 ~ 45 minutes, discharging; (4) extrude after above-mentioned material being added the abundant melt blending of twin screw extruder, granulation, obtain a kind of Toughened With Core-Shell Particles high-strength PET material of the present invention.
Claims (9)
1. a Toughened With Core-Shell Particles high-strength PET material, it is characterized in that, its component by mass percent proportioning is: PET 60% ~ 90%, inorganic particulate 5% ~ 15%, elastomerics 5% ~ 15%, unsaturated graft compound 0.5% ~ 2%, initiator 0.1% ~ 1%, nucleator 0.5% ~ 2%, dispersion agent 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 1%.
2. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, is characterized in that, described inorganic particulate is the talcum powder of particle diameter between 0.01 μm ~ 20 μm, relative density 2.7 ~ 2.8g/cm
3, there is filling, strengthen and nucleation modification effect.
3. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, it is characterized in that, described elastomerics is ethylene-octene copolymer.
4. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, it is characterized in that, described unsaturated graft compound is the unsaturated organic compound containing carboxyl or acid anhydrides, comprises the one in vinylformic acid, 2-butylene acid, maleic acid, Sorbic Acid, itaconic anhydride, maleic anhydride.
5. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, it is characterized in that, described initiator is 2,2'-Azobis(2,4-dimethylvaleronitrile).
6. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, is characterized in that, described nucleator is the one in ethylene-acrylic acid sodium ion polymkeric substance, ethylene-methyl methacrylate sodium ion polymkeric substance, sodium stearate, Sodium Benzoate.
7. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, is characterized in that, described dispersion agent is AClyn lower molecular weight ionomer dispersion agent.
8. a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, is characterized in that, described oxidation inhibitor is the compound of primary antioxidant 1076 and auxiliary anti-oxidant 168.
9. the preparation method of a kind of Toughened With Core-Shell Particles high-strength PET material according to claim 1, is characterized in that, comprise the following steps:
(1) by PET at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, inorganic particulate at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by;
(2) taking dried inorganic particulate by weight ratio, to add barrel temperature be in 25 DEG C ~ 70 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the unsaturated graft compound and initiator that take by weight ratio is added, stir 10 ~ 60 minutes, add the elastomerics taken by weight ratio again, stir 10 ~ 15 minutes;
(3) then add in high-speed mixer and take dried PET, nucleator, dispersion agent and oxidation inhibitor by weight ratio, continue stirring 15 ~ 45 minutes, discharging;
(4) extrude after above-mentioned material being added the abundant melt blending of twin screw extruder, granulation, obtain a kind of Toughened With Core-Shell Particles high-strength PET material of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310630776.7A CN104672813A (en) | 2013-12-02 | 2013-12-02 | Core-shell-particle-toughened high-strength PET (polyethylene terephthalate) material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105968737A (en) * | 2016-06-01 | 2016-09-28 | 江苏民扬塑胶科技有限公司 | PET composite board suitable for outdoor environment and preparation method of PET composite board |
| CN114591614A (en) * | 2020-12-07 | 2022-06-07 | 金发科技股份有限公司 | Polycarbonate composition and preparation method thereof |
-
2013
- 2013-12-02 CN CN201310630776.7A patent/CN104672813A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105968737A (en) * | 2016-06-01 | 2016-09-28 | 江苏民扬塑胶科技有限公司 | PET composite board suitable for outdoor environment and preparation method of PET composite board |
| CN114591614A (en) * | 2020-12-07 | 2022-06-07 | 金发科技股份有限公司 | Polycarbonate composition and preparation method thereof |
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Application publication date: 20150603 |