CN104693713A - High-performance environmental-protection flame-retardant PC/PET alloy - Google Patents

High-performance environmental-protection flame-retardant PC/PET alloy Download PDF

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Publication number
CN104693713A
CN104693713A CN201310639184.1A CN201310639184A CN104693713A CN 104693713 A CN104693713 A CN 104693713A CN 201310639184 A CN201310639184 A CN 201310639184A CN 104693713 A CN104693713 A CN 104693713A
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resin
halogen
pet
master batch
free flame
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不公告发明人
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Qingdao Jiayiyang Industry and Trade Co Ltd
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Qingdao Jiayiyang Industry and Trade Co Ltd
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Priority to CN201310639184.1A priority Critical patent/CN104693713A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a high-performance environmental-protection flame-retardant PC/PET alloy. The high-performance environmental-protection flame-retardant PC/PET alloy comprises following ingredients, by mass, 30 to 60% of PC resin, 20 to 40% of PET resin, 5 to 15% of glass fiber, 3 to 10% of halogen-free flame-retardant master batch, 1 to 4% of a toughening compatilizer, 0.1 to 0.5% of an anti-oxidant, and 0 to 1% of other auxiliary agents. Beneficial effects are that: compared with the prior art, the high-performance environmental-protection flame-retardant PC/PET alloy possesses excellent comprehensive mechanical properties such as high impact resistance, tensile strength, and bending strength, and excellent thermal stability and processability; contains no halogen; possesses flame resistance; is high in efficiency; is safe; is friendly to the environment; is capable of satisfying performance requirements of UL94V-0; and possesses a promising application prospect in the fields of automobile, electronics and electrical appliances, illumination, and communication.

Description

High-performance environment-friendly fire retardation PC/PET alloy
Technical field
The present invention relates to technical field of polymer materials, specifically a kind of high-performance environment-friendly fire retardation PC/PET alloy.
Background technology
Polycarbonate (PC) has the advantages such as shock strength is high, creep resistance, good stability of the dimension, heat-resisting, transparent, dielectric properties are excellent, but simultaneously also there is processing fluidity difference, easily the shortcoming such as stress cracking, notch sensitive occurs.Polyethylene terephthalate (PET) is those semi-crystalline materials, there are extraordinary chemical stability, physical strength, electrical insulation characteristics and thermostability, especially oil-proofness and solvent resistance are excellent, but PET is used alone and there is the shortcomings such as poor heat resistance, shock strength are not high.By blended for PC and PET obtained PC/PET alloy, there is the excellent properties that PC, PET single component does not possess, all can use in a lot of occasion.Along with the range of application of PC/PET alloy constantly expands, to the requirement which proposing functionalization, high performance more.To have concurrently increase-volume, toughness reinforcing, to strengthen and the development research of PC/PET alloy of high flame resistance more and more has using value, and to be also very important.
Summary of the invention
The object of the present invention is to provide the high-performance environment-friendly fire retardation PC/PET alloy of a kind of fiberglass reinforced and the anti-drippage of halogen-free flameproof.
The technical solution adopted for the present invention to solve the technical problems is: high-performance environment-friendly fire retardation PC/PET alloy, and its component by mass percent proportioning is: PC resin 30% ~ 60%, PET resin 20% ~ 40%, glass fibre 5% ~ 15%, halogen-free flame-retardant master batch 3% ~ 10%, toughness reinforcing compatilizer 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, other auxiliary agent 0 ~ 1%.
Described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 18000 ~ 35000g/mol.
Described PET resin is polyethylene terephthalate, and its intrinsic viscosity is 0.7 ~ 1.05dL/g.
Described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process.
Described halogen-free flame-retardant master batch is made up of PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% and obtained halogen-free flame-retardant master batch.
Described toughness reinforcing compatilizer is Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW).
Described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:2 and the compound of phosphite ester kind antioxidant 168.
The preparation method of above-mentioned high-performance environment-friendly fire retardation PC/PET alloy, comprises the following steps:
(1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by;
(2), halogen-free flame-retardant master batch is prepared: take PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% by weight ratio, add after super mixer mixes, melt extruded by twin screw extruder, cooling granulation, and dry rear obtained halogen-free flame-retardant master batch, stand-by;
(3), dry PC resin and PET resin will be taken by weight ratio, add high-speed mixer mixing 0.5 ~ 3 minute, then the halogen-free flame-retardant master batch that the step (2) that takes by weight ratio is obtained is added, and the toughness reinforcing compatilizer taken by weight ratio, oxidation inhibitor, other auxiliary agent, continue mixing 3 ~ 15 minutes, after making fully to mix, discharging, stand-by;
(4), the compound that step (3) obtains is added the main spout of twin screw extruder, add at the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, controlled working temperature is at 220 DEG C ~ 270 DEG C, screw speed 120 ~ 250r/min, extrude after the abundant melt blending of twin screw extruder, cooling granulation, obtain high-performance environment-friendly of the present invention fire retardation PC/PET alloy.
The invention has the beneficial effects as follows, compared with prior art, high-performance environment-friendly fire retardation PC/PET alloy that the present invention obtains, there is the comprehensive mechanical property of shock strength, tensile strength, flexural strength excellence, and thermostability and processibility good, halogen-free flameproof is efficient, safety, environmental protection and meet the performance requriements of UL94 V-0 level, has good application prospect in fields such as automobile, electronic apparatus, illumination, communications.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.
Embodiment 1:
A kind of high-performance environment-friendly fire retardation PC/PET alloy, its component by mass percent proportioning is: the Hinered phenols antioxidant 1010 of PC resin 40%, PET resin 32%, glass fibre 15%, halogen-free flame-retardant master batch 10%, Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW) 2.5%, mass ratio 1:2 and compound 0.3%, other auxiliary agent 0.2% of phosphite ester kind antioxidant 168.Wherein, described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 18000 ~ 35000g/mol; Described PET resin is polyethylene terephthalate, and its intrinsic viscosity is 0.7 ~ 1.05dL/g; Described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process; Described halogen-free flame-retardant master batch is made up of PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% and obtained halogen-free flame-retardant master batch.
Preparation method: (1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by; (2), halogen-free flame-retardant master batch is prepared: take PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% by weight ratio, add after super mixer mixes, melt extruded by twin screw extruder, cooling granulation, and dry rear obtained halogen-free flame-retardant master batch, stand-by; (3), dry PC resin and PET resin will be taken by weight ratio, add high-speed mixer mixing 0.5 ~ 3 minute, then the halogen-free flame-retardant master batch that the step (2) that takes by weight ratio is obtained is added, and the Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer taken by weight ratio (PTW), the Hinered phenols antioxidant 1010 of mass ratio 1:2 and compound, other auxiliary agent of phosphite ester kind antioxidant 168, continue mixing 3 ~ 15 minutes, after making fully to mix, discharging, stand-by; (4), the compound that step (3) obtains is added the main spout of twin screw extruder, add at the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, controlled working temperature is at 220 DEG C ~ 270 DEG C, screw speed 120 ~ 250r/min, extrude after the abundant melt blending of twin screw extruder, cooling granulation, obtain high-performance environment-friendly of the present invention fire retardation PC/PET alloy.
Embodiment 2:
A kind of high-performance environment-friendly fire retardation PC/PET alloy, its component by mass percent proportioning is: the Hinered phenols antioxidant 1076 of PC resin 50%, PET resin 30%, glass fibre 10%, halogen-free flame-retardant master batch 5%, Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer (PTW) 4%, mass ratio 1:2 and compound 0.3%, other auxiliary agent 0.7% of phosphite ester kind antioxidant 168.Wherein, described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 18000 ~ 35000g/mol; Described PET resin is polyethylene terephthalate, and its intrinsic viscosity is 0.7 ~ 1.05dL/g; Described glass fibre is the alkali-free short glass fiber of surface through silane coupling agent process; Described halogen-free flame-retardant master batch is made up of PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% and obtained halogen-free flame-retardant master batch.
Preparation method: (1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by; (2), halogen-free flame-retardant master batch is prepared: take PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% by weight ratio, add after super mixer mixes, melt extruded by twin screw extruder, cooling granulation, and dry rear obtained halogen-free flame-retardant master batch, stand-by; (3), dry PC resin and PET resin will be taken by weight ratio, add high-speed mixer mixing 0.5 ~ 3 minute, then the halogen-free flame-retardant master batch that the step (2) that takes by weight ratio is obtained is added, and the Ethylene-butyl Acrylate-methacrylic Acid Glycerin Ester Copolymer taken by weight ratio (PTW), the Hinered phenols antioxidant 1076 of mass ratio 1:2 and compound, other auxiliary agent of phosphite ester kind antioxidant 168, continue mixing 3 ~ 15 minutes, after making fully to mix, discharging, stand-by; (4), the compound that step (3) obtains is added the main spout of twin screw extruder, add at the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, controlled working temperature is at 220 DEG C ~ 270 DEG C, screw speed 120 ~ 250r/min, extrude after the abundant melt blending of twin screw extruder, cooling granulation, obtain high-performance environment-friendly of the present invention fire retardation PC/PET alloy.

Claims (3)

1. high-performance environment-friendly fire retardation PC/PET alloy, it is characterized in that, its component by mass percent proportioning is: PC resin 30% ~ 60%, PET resin 20% ~ 40%, glass fibre 5% ~ 15%, halogen-free flame-retardant master batch 3% ~ 10%, toughness reinforcing compatilizer 1% ~ 4%, oxidation inhibitor 0.1% ~ 0.5%, other auxiliary agent 0 ~ 1%.
2. high-performance environment-friendly fire retardation PC/PET alloy according to claim 1, it is characterized in that, described halogen-free flame-retardant master batch is made up of PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% and obtained halogen-free flame-retardant master batch.
3. the preparation method of high-performance environment-friendly fire retardation PC/PET alloy according to claim 1, is characterized in that, comprise the following steps:
(1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, stand-by;
(2), halogen-free flame-retardant master batch is prepared: take PC resin 30wt%, polydimethylsiloxane (PDMS) 60wt%, phenylbenzene sulfuryl potassium sulfonate (KSS) 2wt%, polytetrafluoroethylene (PTFE) 4wt% and pentaerythritol stearate (PETS) 4wt% by weight ratio, add after super mixer mixes, melt extruded by twin screw extruder, cooling granulation, and dry rear obtained halogen-free flame-retardant master batch, stand-by;
(3), dry PC resin and PET resin will be taken by weight ratio, add high-speed mixer mixing 0.5 ~ 3 minute, then the halogen-free flame-retardant master batch that the step (2) that takes by weight ratio is obtained is added, and the toughness reinforcing compatilizer taken by weight ratio, oxidation inhibitor, other auxiliary agent, continue mixing 3 ~ 15 minutes, after making fully to mix, discharging, stand-by;
(4), the compound that step (3) obtains is added the main spout of twin screw extruder, add at the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, controlled working temperature is at 220 DEG C ~ 270 DEG C, screw speed 120 ~ 250r/min, extrude after the abundant melt blending of twin screw extruder, cooling granulation, obtain high-performance environment-friendly of the present invention fire retardation PC/PET alloy.
CN201310639184.1A 2013-12-04 2013-12-04 High-performance environmental-protection flame-retardant PC/PET alloy Pending CN104693713A (en)

Priority Applications (1)

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CN201310639184.1A CN104693713A (en) 2013-12-04 2013-12-04 High-performance environmental-protection flame-retardant PC/PET alloy

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106905674A (en) * 2017-04-20 2017-06-30 宁波浙铁大风化工有限公司 A kind of Flame-retardant PET and PC composites and preparation method thereof
CN106977893A (en) * 2017-04-20 2017-07-25 宁波浙铁大风化工有限公司 Flame-retardant PET and PC composites that a kind of color is modified and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106905674A (en) * 2017-04-20 2017-06-30 宁波浙铁大风化工有限公司 A kind of Flame-retardant PET and PC composites and preparation method thereof
CN106977893A (en) * 2017-04-20 2017-07-25 宁波浙铁大风化工有限公司 Flame-retardant PET and PC composites that a kind of color is modified and preparation method thereof
CN106905674B (en) * 2017-04-20 2019-05-07 宁波浙铁大风化工有限公司 A kind of Flame-retardant PET and PC composite material and preparation method

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Application publication date: 20150610