CN106189126B - A kind of low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature and preparation method - Google Patents
A kind of low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature and preparation method Download PDFInfo
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- CN106189126B CN106189126B CN201610780272.7A CN201610780272A CN106189126B CN 106189126 B CN106189126 B CN 106189126B CN 201610780272 A CN201610780272 A CN 201610780272A CN 106189126 B CN106189126 B CN 106189126B
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000003063 flame retardant Substances 0.000 title claims abstract description 40
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000005728 strengthening Methods 0.000 title claims abstract description 27
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 title claims abstract description 27
- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 20
- 230000008025 crystallization Effects 0.000 claims abstract description 20
- 239000002667 nucleating agent Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 239000012745 toughening agent Substances 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 5
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 4
- -1 stearic acid pentaerythritol ester Chemical class 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical group O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920000147 Styrene maleic anhydride Polymers 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N n-octadecyl alcohol Natural products CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 2
- 230000020477 pH reduction Effects 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- NSBGJRFJIJFMGW-UHFFFAOYSA-N trisodium;stiborate Chemical group [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=O NSBGJRFJIJFMGW-UHFFFAOYSA-N 0.000 claims description 2
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000004870 electrical engineering Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000004974 Thermotropic liquid crystal Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- MVDXHIJBNLVYIZ-UHFFFAOYSA-N [Br].CC(c1ccccc1)c1ccccc1 Chemical compound [Br].CC(c1ccccc1)c1ccccc1 MVDXHIJBNLVYIZ-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
-
- 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
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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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- 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
- C08L2205/12—Polymer mixtures characterised by other features containing additives being liquid crystalline or anisotropic in the melt
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- 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
- C08L2205/24—Crystallisation aids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature, is made of the raw material of following parts by weight：40 55 parts of PET resin；25 40 parts of glass fibre；10 18 parts of fire retardant；13 parts of toughener；0.5 1.5 parts of compatilizer；0.5 0.9 parts of nucleating agent；0.5 1.2 parts of crystallization promoter；0.2 0.6 parts of lubricant；0.2 0.6 parts of antioxidant.Raw material used in the present invention is all from commercially available, derives from a wealth of sources, for liquid crystal polymer as crystallization promoter, additive amount is few, and preparation method is simple, and operability is strong, is easy to large-scale industrial production, the great cost performance of product；Flame-retardant strengthening polythylene terephthalate (PET) material prepared by the present invention is low to injection molding requirement, and without using oil temperature machine, low energy consumption；Meanwhile injection molding cycle is substantially shorter, it is efficient；Flame-retardant strengthening polythylene terephthalate (PET) material of the present invention can meet the high heat-resisting and flame-retardancy requirements of electrical engineering and electric apparatus industry.
Description
Technical field
The present invention relates to polymeric material field, the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) of specifically a kind of high heat distortion temperature
Material and preparation method.
Background technology
Polyethylene terephthalate (PET) material have very high dielectric constant and electrical insulating property, and the characteristic by
Temperature and humidity influence is smaller, therefore PET material has good application prospect in electrical engineering and electric apparatus field.
PET material is modified in electrical engineering and electric apparatus field in use, need to usually carry out fire-retardant enhancing to it, to meet intensity and resistance
Fire the requirement of aspect of performance.But modified PET is in engineering plastic modification field, is always a weight difficult point.Since PET is half
Crystalline polymer, crystallization rate is slow, causes its shrinking percentage big, and injection molding cycle is long, and heat distortion temperature is not high, can not
Meet design of material requirement.In practical applications, also bring that demoulding is difficult, part removal retrodeviates that soft deformation etc. is many to ask
Topic.
The main reason for modified PET material crystalline is slow, molding cycle is long is higher (about for the glass transition temperature Tg of PET
78 DEG C), in injection molding process, for hot PET melt when encountering colder mold cavity, molecular motion ability is by substantially
Inhibit, crystallization is caused not carry out quickly.
It solves the problems, such as this, for Shooting Technique, mould temperature need to be set in 90 DEG C or more, so that PET is crystallized, but the party
Method is higher to equipment requirement, and energy consumption is also big；For from modified PET formula, the nucleation capability of PET need to be improved and reduce PET's
Glass transition temperature Tg is plasticized PET.Conventional nucleating agent and crystallization promoter (plasticizer) has talcum powder, covers
De- soil, rare earth, sodium benzoate etc., crystallization promoter has polyethylene glycol, montanic acid, vinyl ionomer etc..Wherein, most have
Effect is sodium benzoate and polyethylene glycol compound system, but they efficiently come from its decomposition to PET, reduce
The glass transition temperature of PET has that curtain coating is apparent in injection moulding process.
Invention content
The purpose of the present invention is to provide a kind of low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature and preparation sides
Method, using organising, nano modification montmorillonite cooperates with thermotropic liquid crystal high polymer as the crystallization nucleating agent of PET, successfully makes resistance
The heat distortion temperature of combustion REINFORCED PET material reaches 225 DEG C, while shortening molding cycle.
The purpose of the present invention can be achieved through the following technical solutions：
The low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of a kind of high heat distortion temperature, which is characterized in that by the original of following parts by weight
Material forms：
40-55 parts of PET resin；
25-40 parts of glass fibre；
10-18 parts of fire retardant；
1-3 parts of toughener；
0.5-1.5 parts of compatilizer；
0.5-0.9 parts of nucleating agent；
0.5-1.2 parts of crystallization promoter；
0.2-0.6 parts of lubricant；
0.2-0.6 parts of antioxidant.
The PET resin inherent viscosity is between 0.8-0.95dl/g.
The glass fibre is E grades of chopped glass fiber precursor of alkali-free of a diameter of 7-10um.
The fire retardant is sodium antimonate and bromide fire retardant with weight ratio 1:The compounding of 3-5, the bromide fire retardant are ten
Bromine diphenylethane, brominated Polystyrene or brominated epoxy resin.
The toughener is that density is 0.88-0.94g/cm3, at 190 DEG C/2.16Kg melt index be 5-30g/
Glycidyl methacrylate graft ethylene-octene copolymer, ethylene and the methyl methacrylate or acrylic acid of 10min
At least one of acrylate copolymer.
The compatilizer is styrene-maleic anhydride copolymer or styrene-acrylonitrile-glycidyl methacrylate
Copolymer.
The nucleating agent is organic nano modified montmorillonoid；The crystallization promoter is molecular weight between 5000-20000
Thermotropic liquid crystal high polymer.
The lubricant is at least one of stearic acid pentaerythritol ester, acidification polyethylene wax.
The antioxidant is β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid n-octadecyl alcohol ester, three [bis- tertiary fourths of 2.4-
Base phenyl] phosphite ester at least one.
The present invention also provides a kind of preparation methods of the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature, including
Following steps：
(1) according to the ratio, by PET resin, fire retardant, toughener, compatilizer, nucleating agent, crystallization promoter, antioxidant and profit
Lubrication prescription is added in homogenizer mixes 2-5min together, obtains mixed material；
(2) mixed material is added to by main feeding hopper in engagement type parallel equidirectional two-screw extruder, and is fed in side
Glass fibre is added at material, flame-retardant strengthening polythylene terephthalate (PET) material is obtained through melting, extrusion, pelletizing；Wherein, twin-screw extruder barrel temperature
230-245 DEG C, screw speed 300-400r/min of degree, vacuum degree are -0.04-0.1MPa.
Nucleating agent of the present invention is nano lamellar montmorillonite, it has extraordinary compatibility with polyester material, while it
Lamellar structure is very beneficial for the nucleus template as crystallizing polyester, and the addition of nano imvite greatly reduces the crystallization of PET
Degree of supercooling；Crystallization promoter is thermotropic liquid crystal polymer, it is a kind of polyester containing a large amount of aromatic rings, under the state that melts orderly
Arrangement.It, which is added in PET material, is used as crystallization promoter, its spontaneous orientation characteristic effectively increases PET strands
Modeling and lubrication, reduce the glass transition temperature of PET material, increase crystallizing power of the PET material in low temperature, therefore drop
Low molding cycle, obtains very high heat distortion temperature.Using liquid crystal polymer as the crystallization promoter of PET, greatly
Improve the low temperature crystallization ability of PET.There is high thermal deformation temperature using the flame-retardant strengthening polythylene terephthalate (PET) material that the method for the present invention is prepared
Spend (1.8MPa heat distortion temperatures can reach 225 DEG C, reach Du Pont's flame-retardant strengthening polythylene terephthalate (PET) FR530 phases same level), low injection molding
The excellent specific property in period, in electrical engineering and electric apparatus field, it will be as the ideal selection of the parts shell such as breaker, electric tool.
Beneficial effects of the present invention：
1, raw material used in the present invention is all from commercially available, is derived from a wealth of sources.Liquid crystal polymer is as crystallization promoter, addition
Amount is few, and preparation method is simple, and operability is strong, is easy to large-scale industrial production, the great cost performance of product；
2, the flame-retardant strengthening polythylene terephthalate (PET) material that prepared by the present invention is low to injection molding requirement, without using oil temperature machine, by mold temperature
90 DEG C or more are set in, low energy consumption；Meanwhile injection molding cycle is substantially shorter, it is efficient；
3, flame-retardant strengthening polythylene terephthalate (PET) material prepared by the present invention can meet the high heat-resisting and flame-retardancy requirements of electrical engineering and electric apparatus industry requirement.
Specific implementation mode
With reference to specific embodiment, present invention is further described in detail.
The raw materials used in the present invention can be by being commercially available.
Embodiment 1-3 is prepared according to following preparation method, the proportioning of each component is as shown in table 1.
(1) according to the ratio, by 40-55 parts of PET resin, 10-18 parts of fire retardant, 1-3 parts of toughener, 0.5-1.5 parts of compatilizer,
0.2-0.6 parts of 0.5-0.9 parts of nucleating agent, 0.5-1.2 parts of crystallization promoter, 0.2-0.6 parts of antioxidant and lubricant are added together
2-5min is mixed in homogenizer, obtains mixed material；
(2) mixed material is added to by main feeding hopper in engagement type parallel equidirectional two-screw extruder, and is fed in side
25-40 parts of glass fibre is added at material, flame-retardant strengthening polythylene terephthalate (PET) material is obtained through melting, extrusion, pelletizing；Wherein, twin-screw extrusion
230-245 DEG C of machine barrel temperature, screw speed 300-400r/min, vacuum degree are -0.04-0.1MPa.
The composition of raw material is prepared in 1 specific embodiment of table
The density of flame-retardant strengthening polythylene terephthalate (PET) composite material prepared by above-described embodiment 1~3, bending modulus, is hanged at tensile strength
Arm beam notch impact strength, heat distortion temperature, anti-flammability, molding cycle, glass transition temperature, volume resistivity etc. are examined
It surveys, examination criteria is as shown in table 2 with performance test results.
2 composite property of table
As can be seen from Table 2, the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) of high heat distortion temperature that prepared by 1-3 of the embodiment of the present invention is multiple
Condensation material has higher mechanical performance, heat distortion temperature and lower molding cycle, can meet electrical engineering and electric apparatus industry to material
The performance requirement of material.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to case study on implementation, and described herein one
As principle be applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementation cases here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (9)
1. a kind of low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature, which is characterized in that by the former material of following parts by weight
Material composition：
40-55 parts of PET resin；
25-40 parts of glass fibre；
10-18 parts of fire retardant；
1-3 parts of toughener；
0.5-1.5 parts of compatilizer；
0.5-0.9 parts of nucleating agent；
0.5-1.2 parts of crystallization promoter；
0.2-0.6 parts of lubricant；
0.2-0.6 parts of antioxidant；
The nucleating agent is organic nano modified montmorillonoid；The crystallization promoter is heat of the molecular weight between 5000-20000
Cause property liquid crystal polymer.
2. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
PET resin inherent viscosity is stated between 0.8-0.95dl/g.
3. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
State E grades of chopped glass fiber precursor of alkali-free that glass fibre is a diameter of 7-10 μm.
4. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
It is sodium antimonate and bromide fire retardant with weight ratio 1 to state fire retardant:The compounding of 3-5, the bromide fire retardant be decabromodiphenylethane,
Brominated Polystyrene or brominated epoxy resin.
5. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
It is 0.88-0.94g/cm that state toughener, which be density,3, at 190 DEG C/2.16Kg melt index be 5-30g/10min methyl-prop
Olefin(e) acid ethylene oxidic ester grafted ethene-octene copolymer, ethylene and methyl methacrylate or butyl acrylate copolymer
It is at least one.
6. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
It is styrene-maleic anhydride copolymer or styrene-acrylonitrile-glycidyl methacrylate copolymer to state compatilizer.
7. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
It is at least one of stearic acid pentaerythritol ester, acidification polyethylene wax to state lubricant.
8. the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature according to claim 1, which is characterized in that institute
It is β-to state antioxidant（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid n-octadecyl alcohol ester, three [2.4- di-tert-butyl-phenyls] are sub-
At least one of phosphate.
9. a kind of method preparing the low molding cycle flame-retardant strengthening polythylene terephthalate (PET) material of high heat distortion temperature as described in claim 1,
It is characterized in that, includes the following steps：
（1）According to the ratio, by PET resin, fire retardant, toughener, compatilizer, nucleating agent, crystallization promoter, antioxidant and lubricant
It is added in homogenizer together and mixes 2-5min, obtain mixed material；
（2）Mixed material is added to by main feeding hopper in engagement type parallel equidirectional two-screw extruder, and at the feeding of side
Glass fibre is added, flame-retardant strengthening polythylene terephthalate (PET) material is obtained through melting, extrusion, pelletizing；Wherein, twin-screw extruder barrel temperature
230-245 DEG C, screw speed 300-400r/min, vacuum degree be-（0.04-0.1）MPa.
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| CN108485210A (en) * | 2018-04-09 | 2018-09-04 | 长沙秋点兵信息科技有限公司 | POF (oriented polyester) environment-friendly film and preparation method thereof |
| CN108892932A (en) * | 2018-05-29 | 2018-11-27 | 芜湖创科新材料科技有限公司 | A kind of high-temperature resistance plastice material and preparation method thereof |
| CN109401062A (en) * | 2018-12-07 | 2019-03-01 | 广德天运新技术股份有限公司 | A kind of waste textile/thermoplas tic resin composite and preparation method thereof |
| CN110452502B (en) * | 2019-07-19 | 2021-10-01 | 深圳市高科塑化有限公司 | Low-warpage good-appearance high-heat-resistance polyester composite material and preparation method thereof |
| TW202325796A (en) | 2021-12-29 | 2023-07-01 | 南亞塑膠工業股份有限公司 | Impact-resistant and flame-retardant polyester material |
| CN115011081A (en) * | 2022-06-10 | 2022-09-06 | 中广核俊尔(浙江)新材料有限公司 | Glass fiber reinforced PET composition with rapid crystallization and preparation method thereof |
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| CN101280095A (en) * | 2008-05-20 | 2008-10-08 | 上海大学 | Glass fiber reinforced polyethylene glycol terephthalate composite material and preparation thereof |
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| CN101280095A (en) * | 2008-05-20 | 2008-10-08 | 上海大学 | Glass fiber reinforced polyethylene glycol terephthalate composite material and preparation thereof |
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| "阻燃性液晶共聚酯及其与PET共混物的性能研究";杜晓华;《中国优秀博硕士学位论文全文数据库（硕士）工程科技I辑》;20040315;B014-247 * |
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