CN104419125A - Flame-retardant toughening-modified PET/PBT blending alloy - Google Patents
Flame-retardant toughening-modified PET/PBT blending alloy Download PDFInfo
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- CN104419125A CN104419125A CN201310396717.8A CN201310396717A CN104419125A CN 104419125 A CN104419125 A CN 104419125A CN 201310396717 A CN201310396717 A CN 201310396717A CN 104419125 A CN104419125 A CN 104419125A
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Abstract
The invention discloses a flame-retardant toughening-modified PET/PBT blending alloy. The flame-retardant toughening-modified PET/PBT blending alloy comprises the following components in percentage by mass: 20%-60% of PET, 10%-40% of PBT, 10%-15% of inorganic particles, 5%-10% of elastomer, 0.5%-2% of maleic anhydride, 0.1%-1% of an initiator, 1%-5% of polyethylene glycol, 1%-3% of carbodiimide, 5%-15% of a compound flame retardant, 0.1%-1% of an antioxidant and 0.1%-2% of a lubricant. Compared with the prior art, the PET/PBT blending alloy disclosed by the invention has the beneficial effects that the PET/PBT blending alloy is subjected to toughening modification by core-shell particles with inorganic particles as cores and the elastomer as shells formed through the interaction and grafting reaction between surface-modified inorganic particles and the elastomer, and thus the notch impact strength, rigidity, heat resistance and corrosion resistance of the alloy system can be greatly improved, the excellent mechanical, chemical and electrical properties are maintained and the flame-retardant toughening-modified PET/PBT blending alloy has the advantages of good processing performance, high flame-retardant efficiency, low cost and the like and has good application prospects.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically a kind of fire-retardant toughened modified PET and PBT blend alloy.
Background technology
Polyethylene terephthalate (PET) is cheap, and having the characteristics such as excellent thermotolerance, chemical proofing, electrical insulating property and mechanical property, is the engineering plastics that cost performance is higher.But PET fragility is comparatively large, and notch shock performance is poor, crystallization rate is slow, and application is restricted.Polybutylene terephthalate (PBT) is a kind of engineering plastics that 20 century 70s develop rapidly, and its general mechanical property is better than PET.Because PET with PBT chemical structure is similar, can learn from other's strong points to offset one's weaknesses both are blended, obtain PET and the PBT blend alloy that over-all properties is ideal.PET and PBT is blended can be reduced costs, and for PET, then solves crystallization rate slow, the not problem of easy-formation.But PET and PBT blend alloy uses as engineering plastics, there is the shortcomings such as notch sensitivity is strong, notched Izod impact strength is low, heat-drawn wire is low, shrinking percentage is large, flame retardant resistance is bad, significantly limit its application.Therefore, be necessary to carry out modification to PET and PBT blend alloy.
Summary of the invention
The object of the present invention is to provide a kind of Toughened With Core-Shell Particles flame-retardant PBT and PET alloy.
The technical solution adopted for the present invention to solve the technical problems is: fire-retardant toughened modified PET and PBT blend alloy, and its component by mass percent proportioning is: PET 20% ~ 60%, PBT 10% ~ 40%, inorganic particulate 10% ~ 15%, elastomerics 5% ~ 10%, maleic anhydride 0.5% ~ 2%, initiator 0.1% ~ 1%, polyoxyethylene glycol 1% ~ 5%, carbodiimide 1% ~ 3%, compound flame redundant 5% ~ 15%, oxidation inhibitor 0.1% ~ 1%, lubricant 0.1% ~ 2%.
Described PET is polyethylene terephthalate.
Described PBT is polybutylene terephthalate.
One in the calcium carbonate that described inorganic particulate is particle diameter between 10nm ~ 20 μm, silicon-dioxide, talcum powder, calcium oxide, aluminium hydroxide, magnesium hydroxide.
Described elastomerics is ethylene-octene copolymer (POE).
Described initiator is dibenzoyl peroxide.
Described compound flame redundant is the compound of polyphenylene phosphonic acids sulfobenzide ester 40wt%, polysiloxane 40wt% and magnesium hydroxide 20wt% three mixing, and wherein magnesium hydroxide surface is through silane coupler modified process and modified particle diameter is less than 2 μm.
Described oxidation inhibitor is the compound of antioxidant 1076 and irgasfos 168.
Described lubricant is ethylene bis stearic amide (EBS).
Above-mentioned fire-retardant toughened modified PET and the preparation method of PBT blend alloy, comprise the following steps:
(1) taking dry inorganic particulate, by weight ratio, to add barrel temperature be in 30 DEG C ~ 80 DEG C high-speed mixers, stirs 3 ~ 15 minutes, then add the maleic anhydride and initiator that take by weight ratio, stir 10 ~ 30 minutes, discharging;
(2) be that the opening rubber mixing machine of 50 DEG C ~ 80 DEG C is plasticated, again by the elastomerics claimed by weight ratio at barrel temperature, add the inorganic particulate that step (1) obtains simultaneously gradually, continue mixing 5 ~ 30 minutes, make dispersed after, slice, cooling is broken, obtain core-shell particles, stand-by;
(3), take polyphenylene phosphonic acids sulfobenzide ester 40wt% by weight ratio, magnesium hydroxide 20wt% that polysiloxane 40wt% and surface particle diameter after silane coupler modified process is less than 2 μm, add after mixing in high-speed mixer, discharging obtains compound flame redundant, stand-by;
(4), dry PET, PBT and compound flame redundant is taken by weight ratio, add in high-speed mixer and mix 2 ~ 5 minutes, add the core-shell particles that step (2) obtains again, add the polyoxyethylene glycol, carbodiimide, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;
(5), add in twin screw extruder by the compound of step (4), at 210 DEG C ~ 270 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fire-retardant toughened modified PET of the present invention and PBT blend alloy.
The invention has the beneficial effects as follows, compared with prior art, the present invention adopts the interphase interaction of the inorganic particulate of surface modification and elastomerics and graft reaction occurs, the core-shell particles that formation is core with inorganic particulate, elastomerics is shell carries out toughening modifying to PET and PBT blend alloy, the notched Izod impact strength of alloy system, rigidity, thermotolerance and corrosion resistance nature can be improved widely, keep excellent machinery, chemistry and electric property, and have that good processability, flame-retarded efficiency are high, low cost and other advantages, thus there is good application prospect.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
A kind of fire-retardant toughened modified PET and PBT blend alloy, its component by mass percent proportioning is: compound 0.7%, the ethylene bis stearic amide (EBS) 1% of PET 40%, PBT 26%, particle diameter calcium carbonate 10%, ethylene-octene copolymer (POE) 5%, maleic anhydride 1%, dibenzoyl peroxide 0.3%, polyoxyethylene glycol 4%, carbodiimide 2%, compound flame redundant 10%, antioxidant 1076 and irgasfos 168 between 10nm ~ 20 μm.Wherein, described compound flame redundant is the compound of polyphenylene phosphonic acids sulfobenzide ester 40wt%, polysiloxane 40wt% and magnesium hydroxide 20wt% three mixing, and wherein magnesium hydroxide surface is through silane coupler modified process and modified particle diameter is less than 2 μm.
Preparation method: (1), taking the calcium carbonate of dry particle diameter between 10nm ~ 20 μm by weight ratio, to add barrel temperature be in 30 DEG C ~ 80 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic anhydride and dibenzoyl peroxide that take by weight ratio is added, stir 10 ~ 30 minutes, discharging; (2) be, that the opening rubber mixing machine of 50 DEG C ~ 80 DEG C is plasticated again at barrel temperature by the ethylene-octene copolymer claimed by weight ratio (POE), add the calcium carbonate that step (1) obtains gradually simultaneously, continue mixing 5 ~ 30 minutes, make dispersed after, slice, cooling is broken, obtains core-shell particles, stand-by; (3), take polyphenylene phosphonic acids sulfobenzide ester 40wt% by weight ratio, magnesium hydroxide 20wt% that polysiloxane 40wt% and surface particle diameter after silane coupler modified process is less than 2 μm, add after mixing in high-speed mixer, discharging obtains compound flame redundant, stand-by; (4), dry PET, PBT and compound flame redundant is taken by weight ratio, add in high-speed mixer and mix 2 ~ 5 minutes, add the core-shell particles that step (2) obtains again, add compound and the ethylene bis stearic amide (EBS) of polyoxyethylene glycol, carbodiimide, antioxidant 1076 and the irgasfos 168 taken by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging; (5), add in twin screw extruder by the compound of step (4), at 210 DEG C ~ 270 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fire-retardant toughened modified PET of the present invention and PBT blend alloy.
Embodiment 2:
A kind of fire-retardant toughened modified PET and PBT blend alloy, its component by mass percent proportioning is: compound 0.5%, the ethylene bis stearic amide (EBS) 1.5% of PET 32%, PBT 20%, particle diameter talcum powder 15%, ethylene-octene copolymer (POE) 10%, maleic anhydride 2%, dibenzoyl peroxide 1%, polyoxyethylene glycol 4%, carbodiimide 2%, compound flame redundant 12%, antioxidant 1076 and irgasfos 168 between 10nm ~ 20 μm.Wherein, described compound flame redundant is the compound of polyphenylene phosphonic acids sulfobenzide ester 40wt%, polysiloxane 40wt% and magnesium hydroxide 20wt% three mixing, and wherein magnesium hydroxide surface is through silane coupler modified process and modified particle diameter is less than 2 μm.
Preparation method: (1), taking the talcum powder of dry particle diameter between 10nm ~ 20 μm by weight ratio, to add barrel temperature be in 30 DEG C ~ 80 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic anhydride and dibenzoyl peroxide that take by weight ratio is added, stir 10 ~ 30 minutes, discharging; (2) be, that the opening rubber mixing machine of 50 DEG C ~ 80 DEG C is plasticated again at barrel temperature by the ethylene-octene copolymer claimed by weight ratio (POE), add the talcum powder that step (1) obtains gradually simultaneously, continue mixing 5 ~ 30 minutes, make dispersed after, slice, cooling is broken, obtains core-shell particles, stand-by; (3), take polyphenylene phosphonic acids sulfobenzide ester 40wt% by weight ratio, magnesium hydroxide 20wt% that polysiloxane 40wt% and surface particle diameter after silane coupler modified process is less than 2 μm, add after mixing in high-speed mixer, discharging obtains compound flame redundant, stand-by; (4), dry PET, PBT and compound flame redundant is taken by weight ratio, add in high-speed mixer and mix 2 ~ 5 minutes, add the core-shell particles that step (2) obtains again, add compound and the ethylene bis stearic amide (EBS) of polyoxyethylene glycol, carbodiimide, antioxidant 1076 and the irgasfos 168 taken by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging; (5), add in twin screw extruder by the compound of step (4), at 210 DEG C ~ 270 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fire-retardant toughened modified PET of the present invention and PBT blend alloy.
Claims (8)
1. a fire-retardant toughened modified PET and PBT blend alloy, it is characterized in that, its component by mass percent proportioning is: PET 20% ~ 60%, PBT 10% ~ 40%, inorganic particulate 10% ~ 15%, elastomerics 5% ~ 10%, maleic anhydride 0.5% ~ 2%, initiator 0.1% ~ 1%, polyoxyethylene glycol 1% ~ 5%, carbodiimide 1% ~ 3%, compound flame redundant 5% ~ 15%, oxidation inhibitor 0.1% ~ 1%, lubricant 0.1% ~ 2%.
2. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, it is characterized in that, the one in the calcium carbonate that described inorganic particulate is particle diameter between 10nm ~ 20 μm, silicon-dioxide, talcum powder, calcium oxide, aluminium hydroxide, magnesium hydroxide.
3. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, is characterized in that, described elastomerics is ethylene-octene copolymer (POE).
4. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, is characterized in that, described initiator is dibenzoyl peroxide.
5. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, it is characterized in that, described compound flame redundant is the compound of polyphenylene phosphonic acids sulfobenzide ester 40wt%, polysiloxane 40wt% and magnesium hydroxide 20wt% three mixing, and wherein magnesium hydroxide surface is through silane coupler modified process and modified particle diameter is less than 2 μm.
6. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, is characterized in that, described oxidation inhibitor is the compound of antioxidant 1076 and irgasfos 168.
7. fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, is characterized in that, described lubricant is ethylene bis stearic amide (EBS).
8. the preparation method of fire-retardant toughened modified PET according to claim 1 and PBT blend alloy, is characterized in that, comprise the following steps:
(1) taking dry inorganic particulate, by weight ratio, to add barrel temperature be in 30 DEG C ~ 80 DEG C high-speed mixers, stirs 3 ~ 15 minutes, then add the maleic anhydride and initiator that take by weight ratio, stir 10 ~ 30 minutes, discharging;
(2) be that the opening rubber mixing machine of 50 DEG C ~ 80 DEG C is plasticated, again by the elastomerics claimed by weight ratio at barrel temperature, add the inorganic particulate that step (1) obtains simultaneously gradually, continue mixing 5 ~ 30 minutes, make dispersed after, slice, cooling is broken, obtain core-shell particles, stand-by;
(3), take polyphenylene phosphonic acids sulfobenzide ester 40wt% by weight ratio, magnesium hydroxide 20wt% that polysiloxane 40wt% and surface particle diameter after silane coupler modified process is less than 2 μm, add after mixing in high-speed mixer, discharging obtains compound flame redundant, stand-by;
(4), dry PET, PBT and compound flame redundant is taken by weight ratio, add in high-speed mixer and mix 2 ~ 5 minutes, add the core-shell particles that step (2) obtains again, add the polyoxyethylene glycol, carbodiimide, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;
(5), add in twin screw extruder by the compound of step (4), at 210 DEG C ~ 270 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fire-retardant toughened modified PET of the present invention and PBT blend alloy.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987696A (en) * | 2015-06-30 | 2015-10-21 | 苏州博利迈新材料科技有限公司 | Method for preparing PPO plastic particles for automotive trim |
| CN105440595A (en) * | 2015-11-28 | 2016-03-30 | 惠州卫生职业技术学院 | PBT (polybutylene terephthalate) plastic and preparation process thereof |
| WO2018072748A1 (en) | 2016-10-21 | 2018-04-26 | 中国石油化工股份有限公司 | Polyester composition and preparation method therefor |
| US11053385B2 (en) | 2016-10-21 | 2021-07-06 | China Petroleum & Chemical Corporation | Polyester composition and preparation method therefor |
-
2013
- 2013-09-04 CN CN201310396717.8A patent/CN104419125A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987696A (en) * | 2015-06-30 | 2015-10-21 | 苏州博利迈新材料科技有限公司 | Method for preparing PPO plastic particles for automotive trim |
| CN105440595A (en) * | 2015-11-28 | 2016-03-30 | 惠州卫生职业技术学院 | PBT (polybutylene terephthalate) plastic and preparation process thereof |
| CN105440595B (en) * | 2015-11-28 | 2018-02-16 | 惠州卫生职业技术学院 | A kind of PBT plastic and its preparation technology |
| WO2018072748A1 (en) | 2016-10-21 | 2018-04-26 | 中国石油化工股份有限公司 | Polyester composition and preparation method therefor |
| US10934391B2 (en) | 2016-10-21 | 2021-03-02 | China Petroleum & Chemical Corporation | Polyester composition and preparation method therefor |
| US11053385B2 (en) | 2016-10-21 | 2021-07-06 | China Petroleum & Chemical Corporation | Polyester composition and preparation method therefor |
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