CN102757624A - Flame-retardant reinforced PET (polyethylene terephthalate)/PTT (Polytrimethylene Terephthalate) alloy material and preparation method thereof - Google Patents
Flame-retardant reinforced PET (polyethylene terephthalate)/PTT (Polytrimethylene Terephthalate) alloy material and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0066—Flame-proofing or flame-retarding additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/5399—Phosphorus bound to nitrogen
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/06—Organic materials
- C09K21/12—Organic materials containing phosphorus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B29C2948/9259—Angular velocity
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- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
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Abstract
The invention discloses a flame-retardant reinforced PET (polyethylene terephthalate)/PTT (Polytrimethylene Terephthalate) alloy material and a preparation method of the flame-retardant reinforced PET/PTT alloy material consists of the following components by weight percent: 25-35% of polyethylene glycol terephthalate, 10-20% of polytrimethylene terephthalate, 10-15% of compound halogen fire retardant, 3-6.5% of phosphorus-nitrogen fire retardant, 3-5% of flexibilizer, 0.4-1% of carbon forming agent, 04-1% of compound nucleating agent, 0.3-0.5% of antioxidant, 0.4-0.6% of lubricating agent and 25-35% of glass fiber. The flame-retardant reinforced PET/PTT alloy material disclosed by the invention has good mechanical property, and is high in toughness, the temperature GWIT of a glowing filament of a sample being 0.8mm in thickness is more than or equal to 750 DEG C, the flame retardant property of the sample is UL94-V0 level, and raw and auxiliary materials, additives and production devices for all the production come from China, so that the production cost and the cost of the raw materials are lowered greatly, and the comprehensive competition of the product is improved effectively.
Description
[technical field]
The present invention relates to technical field of polymer materials, relate in particular to a kind of flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation method thereof.
[background technology]
Polyethylene terephthalate (PET) resin is being to use at present one of several kinds of maximum engineering plastics, is widely used in fields such as electronics, electric, automobile, electricity-saving lamp and household electrical appliance.But, electric equipment products produces fire owing to being prone to the heating burning in the process of using; Therefore; Not only require material to satisfy outside the UL94 vertical combustion test request; Also need satisfy the requirement of glowing filament test, can in use guarantee difficult combustion under the situation of electrical equipment overload like this, and guarantee the safety of electrical equipment and lives and properties.Therefore, a kind of PET material with high glow wire temperature of exploitation has great social effect and huge economic.
Present large-scale electronic apparatus group requires also improving constantly to the glowing filament of flame retardant products; But existing flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material glowing filament ignition temperature is low excessively; Can not satisfy the stability of electric equipment products in work, influence the safety of products performance.
[summary of the invention]
It is better that the technical problem that the present invention will solve provides a kind of mechanical property, the flame-retardant strengthening polythylene terephthalate (PET) that glowing filament ignition temperature is high/PTT alloy material and preparation method thereof.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is, a kind of flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material is composed of the following components by weight percentage:
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, the limiting viscosity of flame-retardant strengthening polythylene terephthalate (PET)/described polyethylene terephthalate of PTT alloy material is 0.8-1.0dl/g; The limiting viscosity of described PTT (PTT) is 0.7-0.9dl/g.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, the described composite halogenated flame retardant of flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material is a mixture, is the mixture of bromide fire retardant and fire retarding synergist, the weight ratio of bromide fire retardant and fire retarding synergist is 1-4:1.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, flame-retardant strengthening polythylene terephthalate (PET)/described phosphorus-nitrogen containing flame retardant of PTT alloy material is the hypophosphite based flame retardant; Described carbon forming agent is a tetramethylolmethane.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, described toughner are a kind of in ethylene-methacrylic acid copolymer or ethylene-methyl acrylate-glycidyl methacrylate copolymer or the hud typed toughner of TEB 3K-butadiene-styrene.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, flame-retardant strengthening polythylene terephthalate (PET)/described composite nucleating agent of PTT alloy material is one or more in talcum powder, mica, lime carbonate, nano-sized magnesium hydroxide, the long-chain carboxylic acid's sodium salt.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, the described long-chain carboxylic acid's sodium salt of flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material is the monacid sodium salt that contains 12-36 carbon atom.
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material; Flame-retardant strengthening polythylene terephthalate (PET)/described oxidation inhibitor of PTT alloy material is four [methyl-β-(3; The 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester weight ratio is the mixture of 1:1;
Above-described flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, flame-retardant strengthening polythylene terephthalate (PET)/described lubricant of PTT alloy material is the home-made fatty acid amide; Described spun glass is that alkali-free is long fine, and diameter is: 9-13 μ m.
The preparation method of a kind of above-mentioned flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material, flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material may further comprise the steps:
A: take by weighing polyethylene terephthalate, polytrimethylene terephthalate and other components by above-mentioned weight percent;
B: the polyethylene terephthalate that will take by weighing, polytrimethylene terephthalate, composite halogenated flame retardant, phosphorus-nitrogen containing flame retardant, toughner, carbon forming agent, composite nucleating agent, oxidation inhibitor and lubricant mixed in mixing tank 5-10 minute;
C: mixed raw materials in the b step is added in the twin screw extruder, when melt extruding, add spun glass at the venting port of twin screw and melt extrude, the temperature of forcing machine is set as follows:
One district's temperature: 180-200 ℃, two district's temperature: 190-210 ℃, three district's temperature: 190-220 ℃; Four district's temperature: 200-220 ℃, five district's temperature: 200-220, six district's temperature: 180-210 ℃; Seven district's temperature: 180-200 ℃, eight district's temperature: 180-190 ℃, head temperature: 210-240 ℃; Vacuum tightness 0.02--0.08MPa, the engine speed when extruding: 300-500r/min; Rate of feeding: 10-35r/min.
Flame-retardant strengthening polythylene terephthalate (PET) of the present invention/PTT alloy material has mechanical property preferably; Toughness is high; The sample glow wire temperature GWTI of the above thickness of its 0.8mm >=750 ℃, flame retardant properties is the UL94-V0 level, supplementary material that full scale production is used and additive and production unit are homemade; Production cost and raw materials cost reduce greatly, effectively raise the synthesized competitiveness of product.
[embodiment]
Through embodiment the present invention is further set forth below:
In following each embodiment; The limiting viscosity of PET is 0.65dl/g; Produce CZ5011 like Jiangyin Xingtai; The limiting viscosity of PTT resin is 0.90dl/g, produces J1101 like Dupont, composite halogenated flame retardant be bromide fire retardant with fire retarding synergist by weight being the composite composition of 1-4:1; Wherein bromide fire retardant is one or more in TDE, bromination epoxy, brominated Polystyrene, the PBDE, and fire retarding synergist is one or more in Antimony Trioxide: 99.5Min, antimony peroxide, the sodium antimonate; Phosphorus-nitrogen containing flame retardant is OP1240 (Clariant product), OP1230 (Clariant product), or one or more of EPFR-300A mix; Toughner is preferably the hud typed toughner of TEB 3K-butadiene-styrene (MBS) of copolymerization, like the EM 500A of LG product; Carbon forming agent is preferably tetramethylolmethane; Composite nucleating agent is that (the order number is 5000 orders to talcum powder; The Shenzhen imperial brightness of brocade Industrial Co., Ltd. product), mica, lime carbonate (are water-ground limestone; The order number is 5000 orders; Jiangxi special fine powder difficult to understand ltd produces), in the nano-sized magnesium hydroxide, long-chain carboxylic acid's sodium salt one or more mix, wherein long-chain carboxylic acid's sodium salt is the monacid sodium salt that contains 12-35 carbon atom; Oxidation inhibitor is that four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester (such as antioxidant 1010) and three (2, the 4-di-tert-butyl-phenyl) phosphorous acid esters (such as oxidation inhibitor 168) mix by weight 1:1; Lubricant is the ethylene bis-fatty acid amides, like home-made TAF; Spun glass is that alkali-free is long fine, and diameter is: 9-13 μ m, and for megalith group produces T635B.
Embodiment 1
Have flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material by weight percentage in the present embodiment, composed of the following components:
PET 25.0%, and PTT 13.0%, composite halogenated flame retardant (75% TDE+25% Antimony Trioxide: 99.5Min) 18.0%; Phosphorus-nitrogen containing flame retardant (OP1240) 4.0%, carbon forming agent tetramethylolmethane 0.6%, toughner (MBS) 3.0%; Composite nucleating agent (20% long-chain carboxylic acid's sodium salt+50% talcum powder+30% water-ground limestone) 0.4%; Oxidation inhibitor (50% antioxidant 1010+50% oxidation inhibitor 168) 0.4%, lubricant 0.6%, spun glass 35%.
Its preparation method is following:
Step 1, take by weighing each component by above-mentioned described weight percent;
Step 2, the PET that takes by weighing, PTT, composite halogenated flame retardant, phosphorus-nitrogen containing flame retardant, toughner, carbon forming agent, composite nucleating agent, oxidation inhibitor, lubricant are mixed 4.5min in moderate-speed mixers;
Step 3, the material that step 2 is mixed add in the hopper of twin screw extruder, when melt extruding, at the venting port adding spun glass of twin screw extruder, through melt extruding granulation; The processing condition of twin screw extruder are following:
Twin screw extruder one district's temperature: 180 ℃, two district's temperature: 190 ℃, three district's temperature: 205 ℃, four district's temperature: 220 ℃, five district's temperature: 220 ℃, six district's temperature: 230 ℃, seven district's temperature: 210 ℃, eight district's temperature: 210 ℃, head temperature: 240 ℃; Vacuum tightness 0.02MPa, the engine speed when extruding: 460r/min; Rate of feeding: 28.0r/min.
Embodiment 2
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 430r/min; Rate of feeding: 27.8r/min, the raw material that this matrix material comprises is table-1 the 2nd listed component of row and weight percent.
Embodiment 3
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 430r/min; Rate of feeding: 30.6r/min, the raw material that this matrix material comprises is table-1 the 3rd listed component of row and weight percent.
Embodiment 4
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 435r/min; Rate of feeding: 30.0r/min, the raw material that this matrix material comprises is table-1 the 4th listed component of row and weight percent.
Embodiment 5
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 442r/min; Rate of feeding: 28.4r/min, the raw material that this matrix material comprises is table-1 the 5th listed component of row and weight percent.
Embodiment 6
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 415r/min; Rate of feeding: 26.7r/min, the raw material that this matrix material comprises is table-1 the 6th listed component of row and weight percent.
Embodiment 7
Present embodiment provides a kind ofly has flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material and preparation technology thereof, and it is identical with embodiment 1 basically, and its difference is, the engine speed when extruding: 478r/min; Rate of feeding: 30.2r/min, the raw material that this matrix material comprises is table-1 the 7th listed component of row and weight percent.
Table-1 embodiment 1-7 parts by weight of raw materials array becomes table:
Performance evaluation mode and implementation standard
With the particle of accomplishing granulation among the foregoing description 1-7 in 120-150 ℃ convection oven dry 4-6 hour,, keep the mould temperature in the sample making course between 70-100 ℃ again with the injection moulding sample preparation on the 80T injection moulding machine of dried particle.
Tensile strength is tested by GB/T 1040 standards.Specimen types is the I type, batten size (mm): 170 (length) * (20 ± 0.2) (end width) * (4 ± 0.2) (thickness), and draw speed is 50 mm/min;
Flexural strength and modulus in flexure are tested by GB 9341/T standard.Specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2), rate of bending are 20 mm/min;
Notched Izod impact strength is tested by GB/T 1043 standards.Specimen types is the I type, specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2); The breach type is a category-A, and the breach residual thickness is 3.2 mm;
Glow wire temperature GWIT presses the IEC60695 standard testing, and flame retardant properties is pressed the UL94 standard testing.
Prepared flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material performance the table of table-2 embodiment 1-7;
Can know by above-mentioned test result; Flame-retardant strengthening polythylene terephthalate (PET)/PTT the alloy material that adopts technical scheme of the present invention to obtain; Basically do not reducing under the advantage of alloy material physical and mechanical properties; Not only vertical combustion can reach UL94 V-0 level (1.6mm), and goods can satisfy the above glow wire temperature GWIT of 0.8mm >=750 ℃.
The PTT of thermoplastic polyester (PTT) molecular chain has certain snappiness; And has a higher oxygen index; Better with the consistency of PET, the above embodiment of the present invention processes alloy material with PTT instead of part PET resin, does not only have compatibility problem; Can also improve simultaneously the toughness of alloy material, make product have higher over-all properties.
The present invention is through add phosphorus-nitrogen containing flame retardant and halogenated flame retardant simultaneously, and when the glowing filament contact material, phosphorus-nitrogen containing flame retardant can provide source of the gas and take away great amount of heat; Char-forming agent in the component can make system form stable carbon-coating and blocking oxygen and heat rapidly.More than the comprehensive action of each component make flame-retardant strengthening polythylene terephthalate (PET) of the present invention/PTT alloy material have higher scorching hot combustion initiation temperature.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited by appended claim.
Claims (10)
1. flame-retardant strengthening polythylene terephthalate (PET)/PTT alloy material is characterized in that, and is composed of the following components by weight percentage:
2. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material is characterized in that, the limiting viscosity of described polyethylene terephthalate is 0.8-1.0dl/g; The limiting viscosity of described PTT is 0.7-0.9dl/g.
3. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material is characterized in that, described composite halogenated flame retardant is a mixture, is the mixture of bromide fire retardant and fire retarding synergist, and the weight ratio of bromide fire retardant and fire retarding synergist is 1-4:1.
4. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material is characterized in that, described phosphorus-nitrogen containing flame retardant is the hypophosphite based flame retardant; Described carbon forming agent is a tetramethylolmethane.
5. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material, described toughner are a kind of in ethylene-methacrylic acid copolymer or ethylene-methyl acrylate-glycidyl methacrylate copolymer or the hud typed toughner of TEB 3K-butadiene-styrene.
6. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material is characterized in that, described composite nucleating agent is one or more in talcum powder, mica, lime carbonate, nano-sized magnesium hydroxide, the long-chain carboxylic acid's sodium salt.
7. flame-retardant strengthening polythylene terephthalate (PET) according to claim 5/PTT alloy material is characterized in that, described long-chain carboxylic acid's sodium salt is the monacid sodium salt that contains 12-36 carbon atom.
8. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material; It is characterized in that; Described oxidation inhibitor is that four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester weight ratio is the mixture of 1:1.
9. flame-retardant strengthening polythylene terephthalate (PET) according to claim 1/PTT alloy material is characterized in that, described lubricant is the home-made fatty acid amide; Described spun glass is that alkali-free is long fine, and diameter is: 9-13 μ m.
10. the preparation method of flame-retardant strengthening polythylene terephthalate (PET) as claimed in claim 1/PTT alloy material is characterized in that, may further comprise the steps:
A: take by weighing polyethylene terephthalate, polytrimethylene terephthalate and other components by the described weight percent of claim 1;
B: the polyethylene terephthalate that will take by weighing, polytrimethylene terephthalate, composite halogenated flame retardant, phosphorus-nitrogen containing flame retardant, toughner, carbon forming agent, composite nucleating agent, oxidation inhibitor and lubricant mixed in mixing tank 5-10 minute;
C: mixed raw materials in the b step is added in the twin screw extruder, when melt extruding, add spun glass at the venting port of twin screw and melt extrude, the temperature of forcing machine is set as follows:
One district's temperature: 180-200 ℃, two district's temperature: 190-210 ℃, three district's temperature: 190-220 ℃; Four district's temperature: 200-220 ℃, five district's temperature: 200-220, six district's temperature: 180-210 ℃; Seven district's temperature: 180-200 ℃, eight district's temperature: 180-190 ℃, head temperature: 210-240 ℃; Vacuum tightness 0.02--0.08MPa, the engine speed when extruding: 300-500r/min; Rate of feeding: 10-35r/min.
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