CN102477215B - Heat-conducting flame-retardant polyethylene terephthalate composite and preparation method thereof - Google Patents
Heat-conducting flame-retardant polyethylene terephthalate composite and preparation method thereof Download PDFInfo
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- CN102477215B CN102477215B CN201010558401.0A CN201010558401A CN102477215B CN 102477215 B CN102477215 B CN 102477215B CN 201010558401 A CN201010558401 A CN 201010558401A CN 102477215 B CN102477215 B CN 102477215B
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Abstract
The invention discloses a heat-conducting flame-retardant polyethylene terephthalate composite, which comprises, by weight, 30-50 parts of polyethylene terephthalate, 20-40 parts of heat-conducting agent, 12-15 parts of flame retardant, 6-8 parts of flame retardant synergist, 5-10 parts of flexibilizer, 0.5-2 parts of coupling agent, 0.3-0.5 part of antioxidant and 0.5-1 part of processing aid. The composite made by the preparation method has excellent heat conductivity and flame retardancy and further has fine mechanical property, and is widely applicable to electronic and electrical components having high requirement for heat dissipation, and applicable range of PET (polyethylene terephthalate) in fields of electronics, electrical appliances, automobiles, home appliances and the like is widened.
Description
Technical field
The present invention relates to a kind of PET composite material, particularly relate to a kind of heat-conducting flame-retardant polyethylene terephthalate and preparation method thereof.
Background technology
Polyethylene terephthalate (PET) is cheapest in engineering plastics, has very high cost performance.PET is oyster white or polymkeric substance that is light yellow, highly crystalline, surface smoothing is glossy, there is excellent physical and mechanical properties in wide temperature range, life-time service temperature can reach 120 DEG C, electrical insulating property is excellent, and even under high-temperature high-frequency, its electrical property is still better, but corona resistance is poor, creep resistance, resistance to fatigue, rub resistance, dimensional stability are all fine.PET molecular chain there is ester bond, can decompose under strong acid, highly basic and water vapor acting, organic solvent-resistant, good weatherability, be widely used in the case material of electric and medical field and wrapping material, auto parts machinery, mechanical means.But because PET belongs to combustiblematerials, and thermal conductivity low (about 0.2W/mK), fire-retardant and application that is art of heat transfer is very limited at needs to make it, and these fields comprise the industries such as electronic apparatus, auto parts, energy-saving lamp.Therefore the flame retardant properties that imparting PET is good and heat conductivility are very necessary, and heat conductive flame-retarding PET is significant to meeting the demand of market for heat conductive flame-retarding plastic components.
Domesticly have many research and report about fire retardant polyethylene terephthalate, but comparatively rare for the report of heat conduction PET.Chinese patent CN 101805496A discloses a kind of novel halogen-free flame-retardant reinforcing polyester alloy (ETP), its flame retardant properties reaches U.S. UL940.8mm V-0 level, excellent in mechanical performance, the material such as the fire retardant PBT with no halogen that alternative price is higher, PC, PA, good forming effect, do not affect color matching, but do not improved due to heat conduction and heat radiation performance, limit it and further apply.Chinese patent CN 101845204A discloses a kind of heat conduction polyethylene terephthalate with high strength and preparation method thereof, the PET composite material prepared has higher intensity while having good heat conductive performance, but owing to not improving its flame retardant properties, make it be restricted in the application in the field such as electric, automobile, household electrical appliance.
Summary of the invention
The present invention provides a kind of excellent heat conduction and flame retardant properties of having concurrently to solve above-mentioned prior art Problems existing, the simultaneously heat-conducting flame-retardant polyethylene terephthalate and preparation method thereof of good mechanical properties, to widen the range of application of PET.
Object of the present invention is achieved through the following technical solutions:
A kind of heat-conducting flame-retardant polyethylene terephthalate, comprises following component and parts by weight:
Polyethylene terephthalate 30-50,
Thermal conducting agent 20-40,
Fire retardant 12-15,
Fire retarding synergist 6-8,
Toughner 5-10,
Coupling agent 0.5-2,
Oxidation inhibitor 0.3-0.5,
Processing aid 0.5-1.
Described thermal conducting agent is one or more in silicon carbide whisker, aluminium nitride whisker or ZnOw.
Described fire retardant is one or more in decabromodiphynly oxide, polydibromstyrol, different hydrocinnamyl phosphoric acid ester, triaryl phosphate, 2-hydroxyethyl phosphenylic acid.
Described fire retarding synergist is antimonous oxide.
Described toughner is ethylene-methyl acrylate-glyceryl methacrylate multipolymer (GMA).
Described coupling agent is one or more in silane coupling agent, titanate coupling agent or aluminate coupling agent.
Described oxidation inhibitor is one or more in antioxidant 1010, oxidation inhibitor 1098, irgasfos 168, oxidation inhibitor ST-3610 (oil of SPC western Neil Chinese workers Science and Technology Ltd.), oxidation inhibitor P262 (Guangzhou will one Fine Chemical Co., Ltd), oxidation inhibitor B-1036 (Fine Chemical Co., Ltd is expanded in Beijing).
Described processing aid is one or more in lipid acid, calcium stearate, Zinic stearas, silicone powder.
A preparation method for heat-conducting flame-retardant polyethylene terephthalate, comprises the following steps:
(1) with weight parts, 20-40 part thermal conducting agent, 12-15 part fire retardant, 6-8 part fire retarding synergist are joined in high-speed mixer, then adds 0.5-2 part coupling agent, mix obtained heat conductive flame-retarding compound;
(2) the heat conductive flame-retarding compound in step (1), 30-50 part polyethylene terephthalate and 5-10 part toughner are joined in high-speed mixer, then add 0.3-0.5 part oxidation inhibitor, 0.5-1 part processing aid, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
Compared with prior art, the present invention has following beneficial effect:
The invention provides a kind of heat-conducting flame-retardant polyethylene terephthalate and preparation method thereof, gained matrix material also has good flame retardant properties while having excellent heat conductivility, the introducing of silicon carbide whisker, aluminium nitride whisker or ZnOw and GMA, material is also made to have good mechanical property, electronics, the electrical component higher to cooling requirements can be widely used as, widen the range of application of PET in the field such as electric, automobile, household electrical appliance.
Embodiment
The present invention is described in detail below in conjunction with each embodiment.
Embodiment 1 (with weight parts, lower same)
Polyethylene terephthalate 50 parts, thermal conducting agent silicon carbide whisker 20 parts, fire retardant polydibromstyrol 12 parts, fire retarding synergist antimonous oxide 6 parts, toughner GMA10 part, silane coupling agent 0.5 part, oxidation inhibitor ST-36100.5 part, processing aid calcium stearate 1 part.
Embodiment 2
Polyethylene terephthalate 40 parts, thermal conducting agent silicon carbide whisker 30 parts, fire retardant polydibromstyrol 12 parts, fire retarding synergist antimonous oxide 6 parts, toughner GMA 10 parts, silane coupling agent 0.5 part, oxidation inhibitor ST-36100.5 part, processing aid calcium stearate 1 part.
Embodiment 3
Polyethylene terephthalate 30 parts, thermal conducting agent aluminium nitride whisker 40 parts, the different hydrocinnamyl phosphoric acid ester of fire retardant 12 parts, fire retarding synergist antimonous oxide 6 parts, toughner GMA 10 parts, silane coupling agent 0.5 part, oxidation inhibitor P2620.5 part, processing aid calcium stearate 1 part.
Embodiment 4
Polyethylene terephthalate 30 parts, thermal conducting agent ZnOw 40 parts, the different hydrocinnamyl phosphoric acid ester of fire retardant 15 parts, fire retarding synergist antimonous oxide 8 parts, toughner GMA 5 parts, silane coupling agent 0.5 part, oxidation inhibitor P2620.5 part, processing aid calcium stearate 1 part.
Preparation method:
(1) thermal conducting agent, fire retardant, fire retarding synergist are joined in high-speed mixer, then add coupling agent, mix obtained heat conductive flame-retarding compound;
(2) heat conductive flame-retarding compound, polyethylene terephthalate and toughner in step (1) are joined in high-speed mixer, then add oxidation inhibitor, processing aid, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
Performance test:
Tensile strength and elongation at break press ISO 527-1, and 2 standards are tested; Flexural strength and modulus in flexure are tested by ISO 178 standard; Notched Izod impact strength and unnotched impact strength press ISO 179-1, and 2 standards are tested; Heat-drawn wire presses ISO 75-1, and 2 standards detect; Flame retardant properties is tested by " the right hand performance test mark of UL94 plastics " and GB/T 2408 standard; Heat conductivility is tested by ASTM C177 standard.
The performance test results of embodiment 1-4 and comparative example 1 (DuPontTMRynite zero RFR945NC010), comparative example 2 (DuPontTMRynite zero RFR945BK507) is in table 1.
Table 1
Embodiment 5
A preparation method for heat-conducting flame-retardant polyethylene terephthalate, comprises the following steps:
(1) with weight parts, 25 parts of thermal conducting agent silicon carbide whiskers, 13 parts of fire retardant decabromodiphynly oxides, 6.5 parts of fire retarding synergist antimonous oxides are joined in high-speed mixer, then add 1 part of aluminate coupling agent, mix obtained heat conductive flame-retarding compound;
(2) the heat conductive flame-retarding compound in step (1), 35 parts of polyethylene terephthalates and 7 parts of toughner GMA are joined in high-speed mixer, then add 0.2 part of oxidation inhibitor B-1036,0.1 part of oxidation inhibitor, 1098,0.5 part of processing aid lipid acid, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
Embodiment 6
A preparation method for heat-conducting flame-retardant polyethylene terephthalate, comprises the following steps:
(1) with weight parts, 20 parts of thermal conducting agent aluminium nitride whiskers, 15 parts of thermal conducting agent ZnOws, 10 parts of fire retardant triaryl phosphates, 4 parts of fire retardant 2-hydroxyethyl phosphenylic acids, 7 parts of fire retarding synergist antimonous oxides are joined in high-speed mixer, then add 2 parts of titanate coupling agents, mix obtained heat conductive flame-retarding compound;
(2) the heat conductive flame-retarding compound in step (1), 45 parts of polyethylene terephthalates and 9 parts of toughner GMA are joined in high-speed mixer, then add 0.3 part of antioxidant 1010,0.1 part of irgasfos 168,0.5 part of processing aid Zinic stearas, 0.25 part of processing aid silicone powder, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
Be only several specific embodiments of the application above, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drops in the protection domain of the application.
Claims (6)
1. a heat-conducting flame-retardant polyethylene terephthalate, is characterized in that, comprises following component and parts by weight:
Described thermal conducting agent is one or more in silicon carbide whisker, aluminium nitride whisker or ZnOw;
Described coupling agent is one or more in silane coupling agent, titanate coupling agent or aluminate coupling agent;
Described processing aid is one or more in lipid acid, calcium stearate, Zinic stearas, silicone powder;
Described heat-conducting flame-retardant polyethylene terephthalate is by the preparation comprising the following steps method:
(1) with weight parts, 20-40 part thermal conducting agent, 12-15 part fire retardant, 6-8 part fire retarding synergist are joined in high-speed mixer, then adds 0.5-2 part coupling agent, mix obtained heat conductive flame-retarding compound;
(2) the heat conductive flame-retarding compound in step (1), 30-50 part polyethylene terephthalate and 5-10 part toughner are joined in high-speed mixer, then add 0.3-0.5 part oxidation inhibitor, 0.5-1 part processing aid, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
2. a kind of heat-conducting flame-retardant polyethylene terephthalate as claimed in claim 1, it is characterized in that, described fire retardant is one or more in decabromodiphynly oxide, polydibromstyrol, different hydrocinnamyl phosphoric acid ester, triaryl phosphate, 2-hydroxyethyl phosphenylic acid.
3. a kind of heat-conducting flame-retardant polyethylene terephthalate as claimed in claim 1, is characterized in that, described fire retarding synergist is antimonous oxide.
4. a kind of heat-conducting flame-retardant polyethylene terephthalate as claimed in claim 1, is characterized in that, described toughner is ethylene-methyl acrylate-glyceryl methacrylate multipolymer.
5. a kind of heat-conducting flame-retardant polyethylene terephthalate as claimed in claim 1, it is characterized in that, described oxidation inhibitor is one or more in antioxidant 1010, oxidation inhibitor 1098, irgasfos 168, oxidation inhibitor ST-3610, oxidation inhibitor P262, oxidation inhibitor B-1036.
6. a preparation method for heat-conducting flame-retardant polyethylene terephthalate as claimed in claim 1, is characterized in that, comprises the following steps:
(1) with weight parts, 20-40 part thermal conducting agent, 12-15 part fire retardant, 6-8 part fire retarding synergist are joined in high-speed mixer, then adds 0.5-2 part coupling agent, mix obtained heat conductive flame-retarding compound;
(2) the heat conductive flame-retarding compound in step (1), 30-50 part polyethylene terephthalate and 5-10 part toughner are joined in high-speed mixer, then add 0.3-0.5 part oxidation inhibitor, 0.5-1 part processing aid, mix;
(3) material that step (2) mixes is joined twin screw extruder, through melt extruding, granulation obtains heat-conducting flame-retardant polyethylene terephthalate.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103772985B (en) * | 2012-10-17 | 2016-12-28 | 合肥杰事杰新材料股份有限公司 | A kind of high density modified matrix resin material and its production and use |
| CN103772922A (en) * | 2012-10-25 | 2014-05-07 | 合肥杰事杰新材料股份有限公司 | Antiflaming, insulative and heat conductive polybutylene terephthalate composite material and preparation method thereof |
| CN106009547B (en) * | 2016-07-12 | 2018-05-29 | 北京服装学院 | A kind of modified flame-retardant polyethylene terephthalate system and preparation method thereof |
| CN108148361B (en) * | 2017-12-29 | 2020-06-30 | 江阴济化新材料有限公司 | Heat-conducting PBT material and preparation method and application thereof |
| CN109354839A (en) * | 2018-10-24 | 2019-02-19 | 江苏亿超工程塑料有限公司 | A kind of thermally conductive engineering plastics and preparation method thereof |
| CN110172234A (en) * | 2019-06-14 | 2019-08-27 | 阜城县前进汽车灯具有限公司 | A kind of Vehicular lamp illuminating material and its preparation process |
| CN110423439B (en) * | 2019-08-02 | 2021-11-02 | 横店集团得邦工程塑料有限公司 | Heat-conducting flame-retardant PBT (polybutylene terephthalate) composite material and preparation method thereof |
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