CN104861428A - Composite material for toughening polyesters by covering rigid particles with elastomers - Google Patents
Composite material for toughening polyesters by covering rigid particles with elastomers Download PDFInfo
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- CN104861428A CN104861428A CN201410522950.0A CN201410522950A CN104861428A CN 104861428 A CN104861428 A CN 104861428A CN 201410522950 A CN201410522950 A CN 201410522950A CN 104861428 A CN104861428 A CN 104861428A
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- rigid particles
- ptt
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- elastomerics
- toughened
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Abstract
The invention discloses a composite material for toughening polyesters by covering rigid particles with elastomers. The composite material comprises the following ingredients, by weight, 70%-95% of PTT, 5%-20% of rigid particles, 0.5%-2% of diisocyanate, 1%-4% of dihydric alcohol, 0.1%-0.5% of anti-oxidants and 0.1%-1% of dispersants. The rigid particles are one of calcium carbonate, powdered steatile, wollastonite, potassium titanate whisker, mica and kaolin with an average diameter of 0.1 micrometer to 20 micrometers. The beneficial effects are that in-situ polymerization is employed to generate polyurethane elastomers covering surfaces of rigid particles, and a core-shell structure with the rigid particles as cores and with the elastomers as shells is formed to carry out toughening modification of PTT polyesters. The material toughness is raised greatly, the material intensity, rigidity and heat resistance are raised well, and the composite material has advantages of good processing performance, low cost and the like.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically the matrix material of a kind of elastomerics coated Rigid Particles Toughened PTT polyester.
Background technology
Poly(Trimethylene Terephthalate) (PTT) is as a kind of new polyester macromolecular material of excellent combination property, the fields such as fiber, film, engineering plastics are widely used at present, but notched Izod impact strength is low, notch sensitivity is large defect that unmodified PTT exists, this greatly limits PTT and applies widely in every field.Elastomerics is dispersed in PTT matrix in the mode of dispersed particle, good toughening effect can be had, but the shortcoming of this method for toughening is after the rubber particles adding low modulus in a large number, reduces the performances such as its intensity, rigidity and thermotolerance while the toughness of PTT can be made to be improved, when adopting rigid particles to carry out toughness reinforcing to PTT, rigid particles is while raising PTT toughness, also can improve the intensity of PTT, rigidity and thermotolerance, and contribute to improving rheological performance, it is lower that Rigid Particles Toughened can obtain cost from the starting material of cheapness, the high-performance PTT that moulding processability is good, but Rigid Particles Toughened must carry out necessary modification to rigid particles surface, as passed through coupling agent, compatilizer improves the compatibility problem of rigid particles and PTT matrix, but use coupling agent merely, compatilizer also far can not solve rigid particles completely and be difficult to toughness reinforcing problem.So, propose to use the multiple elements design system of PTT/ elastomerics/stiff differential equations to fill activeness and quietness, namely rubber particles-rigid particles " coated " structure or so-called " shell-core " structure is formed, play rubber particles (improve toughness but sacrifice modulus) and (improve rigidity easy with rigid particles, but it is difficult to improve toughness) respective advantage, to play effective collaborative activeness and quietness effect.Because for elastomerics/inorganic rigid particle composite toughening PTT system, add the toughness that improve matrix on the one hand due to elastomeric, when adding inorganic rigid particle, its toughening effect is just particularly evident, thus demonstrates coordination plasticizing effect; On the one hand, when elastomerics and inorganic rigid particle form " soft core-duricrust " structure, flexible interface layer is there is between rigid particles and matrix, enhance the interfacial adhesion of matrix and filler, be beneficial to the transmission of stress from matrix to mineral filler, the dispersiveness of filler can be improved in addition, reduce its aggregation tendency, improve the comprehensive mechanical property of compound system.
Summary of the invention
The object of the present invention is to provide the matrix material of a kind of elastomerics coated Rigid Particles Toughened PTT polyester.
The technical solution adopted for the present invention to solve the technical problems is: the matrix material of elastomerics coated Rigid Particles Toughened PTT polyester, and its component by mass percent proportioning is: PTT 70% ~ 95%, rigid particles 5% ~ 20%, vulcabond 0.5% ~ 2%, dibasic alcohol 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, dispersion agent 0.1% ~ 1%.
Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g.
Described rigid particles is mean diameter calcium carbonate, talcum powder, wollastonite, potassium titanate crystal whisker, mica, the one in kaolin of 0.1 μm ~ 20 μm.
Described dibasic alcohol is the one in ethylene glycol, propylene glycol, butyleneglycol.
Described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.
Described dispersion agent is the one in calcium stearate, ethylene bis stearic amide, pentaerythritol stearate.
The preparation method of the matrix material of above-mentioned elastomerics coated Rigid Particles Toughened PTT polyester, comprises the following steps:
(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by rigid particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by;
(2), take dry rigid particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the dibasic alcohol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated rigid particles, then dry PTT is added by important proportioning, and add the oxidation inhibitor and dispersion agent that take by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing;
(3), the compound of step (2) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the matrix material of elastomerics of the present invention coated Rigid Particles Toughened PTT polyester.
The invention has the beneficial effects as follows, the present invention adopts in-situ polymerization generate polyurethane elastomer and be coated on rigid particles surface, the nucleocapsid structure that formation is core with rigid particles, elastomerics is shell carries out toughening modifying to PTT polyester, while making greatly to improve toughness of material, also improve the strength of materials, rigidity and thermotolerance well, and there is good processability, low cost and other advantages.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.
Embodiment 1:
The matrix material of a kind of elastomerics coated Rigid Particles Toughened PTT polyester, its component by mass percent proportioning is: PTT 74%, rigid particles 20%, vulcabond 1.5%, ethylene glycol 4%, antioxidant 1010 0.2%, calcium stearate 0.3%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described rigid particles is mean diameter at the calcium carbonate of 0.1 μm ~ 20 μm.
Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by rigid particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by; (2), take dry rigid particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the ethylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated rigid particles, then dry PTT is added by important proportioning, and add the antioxidant 1010 and calcium stearate that take by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing; (3), the compound of step (2) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the matrix material of elastomerics of the present invention coated Rigid Particles Toughened PTT polyester.
Embodiment 2:
The matrix material of a kind of elastomerics coated Rigid Particles Toughened PTT polyester, its component by mass percent proportioning is: the compound 0.1% of PTT 81%, rigid particles 15%, vulcabond 1.2%, propylene glycol 2.5%, antioxidant 1076 and irgasfos 168, pentaerythritol stearate 0.2%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.2dL/g, and described rigid particles is mean diameter at the wollastonite of 0.1 μm ~ 20 μm.
Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by rigid particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by, (2), take dry rigid particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the propylene glycol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated rigid particles, then dry PTT is added by important proportioning, and add the compound of antioxidant 1076 and the irgasfos 168 taken by weight ratio, pentaerythritol stearate, make to stir 3 ~ 15 minutes together, discharging after fully mixing, (3), the compound of step (2) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the matrix material of elastomerics of the present invention coated Rigid Particles Toughened PTT polyester.
Claims (6)
1. the matrix material of an elastomerics coated Rigid Particles Toughened PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 70% ~ 95%, rigid particles 5% ~ 20%, vulcabond 0.5% ~ 2%, dibasic alcohol 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, dispersion agent 0.1% ~ 1%.
2. the matrix material of elastomerics according to claim 1 coated Rigid Particles Toughened PTT polyester, it is characterized in that, described rigid particles is mean diameter calcium carbonate, talcum powder, wollastonite, potassium titanate crystal whisker, mica, the one in kaolin of 0.1 μm ~ 20 μm.
3. the matrix material of elastomerics according to claim 1 coated Rigid Particles Toughened PTT polyester, is characterized in that, described dibasic alcohol is the one in ethylene glycol, propylene glycol, butyleneglycol.
4. the matrix material of elastomerics according to claim 1 coated Rigid Particles Toughened PTT polyester, is characterized in that, described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.
5. the matrix material of elastomerics according to claim 1 coated Rigid Particles Toughened PTT polyester, is characterized in that, described dispersion agent is the one in calcium stearate, ethylene bis stearic amide, pentaerythritol stearate.
6. the preparation method of the matrix material of elastomerics according to claim 1 coated Rigid Particles Toughened PTT polyester, is characterized in that, comprise the following steps:
(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by rigid particles at 60 DEG C ~ 100 DEG C temperature dry 1 ~ 2 hour, stand-by;
(2), take dry rigid particles by weight ratio and add barrel temperature in 40 DEG C ~ 70 DEG C mixing machines, add the dibasic alcohol taken by weight ratio simultaneously, make stirring at low speed 5 ~ 30 minutes together, add the vulcabond taken by weight ratio again, and high-speed stirring 5 ~ 60 minutes, make abundant addition polymerization and coated rigid particles, then dry PTT is added by important proportioning, and add the oxidation inhibitor and dispersion agent that take by weight ratio, make to stir 3 ~ 15 minutes together, discharging after fully mixing;
(3), the compound of step (2) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain the matrix material of elastomerics of the present invention coated Rigid Particles Toughened PTT polyester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522950.0A CN104861428A (en) | 2014-10-08 | 2014-10-08 | Composite material for toughening polyesters by covering rigid particles with elastomers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522950.0A CN104861428A (en) | 2014-10-08 | 2014-10-08 | Composite material for toughening polyesters by covering rigid particles with elastomers |
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| CN104861428A true CN104861428A (en) | 2015-08-26 |
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| CN201410522950.0A Pending CN104861428A (en) | 2014-10-08 | 2014-10-08 | Composite material for toughening polyesters by covering rigid particles with elastomers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818885A (en) * | 2019-11-25 | 2020-02-21 | 河南城建学院 | Polyurethane-coated hollow glass bead toughened cast nylon 6 composite material and preparation method thereof |
| CN113511832A (en) * | 2021-06-03 | 2021-10-19 | 青岛理工大学 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
-
2014
- 2014-10-08 CN CN201410522950.0A patent/CN104861428A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818885A (en) * | 2019-11-25 | 2020-02-21 | 河南城建学院 | Polyurethane-coated hollow glass bead toughened cast nylon 6 composite material and preparation method thereof |
| CN113511832A (en) * | 2021-06-03 | 2021-10-19 | 青岛理工大学 | Heterogeneous solution method for preparing polymer-coated inorganic particles and application thereof |
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Application publication date: 20150826 |