CN107266877A - A kind of low smell enhancing flame-retardant PBT material and preparation method thereof - Google Patents

A kind of low smell enhancing flame-retardant PBT material and preparation method thereof Download PDF

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Publication number
CN107266877A
CN107266877A CN201710601118.3A CN201710601118A CN107266877A CN 107266877 A CN107266877 A CN 107266877A CN 201710601118 A CN201710601118 A CN 201710601118A CN 107266877 A CN107266877 A CN 107266877A
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China
Prior art keywords
retardant
flame
low smell
pbt
pbt material
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Pending
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CN201710601118.3A
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Chinese (zh)
Inventor
何辉
晏伟
宗荣锋
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Wuhan Sunwill Seth Engineering Plastics Co Ltd
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Wuhan Sunwill Seth Engineering Plastics Co Ltd
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Priority to CN201710601118.3A priority Critical patent/CN107266877A/en
Publication of CN107266877A publication Critical patent/CN107266877A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/02Flame or fire retardant/resistant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer 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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention relates to a kind of low smell enhancing flame-retardant PBT material, it is made up of the raw material of following percetage by weight:PBT resin 49.5 58%, fire retardant 11.5 13.5%, toughener 0 3%, glass fibre 30% 33%, other auxiliary agents 0.5 1%.The preparation method of the low smell enhancing flame-retardant PBT material is simple:First PBT resin drying and fire retardant are mixed, remaining composition is added and stirs together, is finally produced in melt extruder with glass extrusion.Compared with prior art, beneficial effects of the present invention are, low smell enhancing flame-retardant PBT material has good heat endurance, ultralow mold deposit is separated out, exempt to wipe mould, particularly injection molding product will not distribute penetrating odor at high temperature heat, available for the production of the heat-resistant parts such as electric cooker, electromagnetic oven, coffee machine, Garment Steamer Machine, electric oven, and be particularly suitable for use in warm-air drier air outlet grate.

Description

A kind of low smell enhancing flame-retardant PBT material and preparation method thereof
Technical field
The invention belongs to polymeric material field, and in particular to a kind of low smell enhancing flame-retardant PBT material and its preparation side Method.
Background technology
PBT resin is widely used in household electrical appliances, electronic apparatus and automobile industry, because its is cheap, valency in engineering plastics Lattice are generally the least expensive, and comprehensive mechanical property is excellent, high temperature resistant, easily fire-retardant and modified processing the features such as do not absorb water, and are widely used in household electrical appliances Heat-resistant part and electronic apparatus, there is greatly the gesture instead of nylon.
National inventing patent [CN201610637935.X], which provides a kind of high fluidity low-melting-point glass fiber, strengthens resistance PBT/PET materials are fired, national inventing patent [CN201510792921.0] is compound there is provided a kind of high CTI value flame-retardant reinforced PBT Material, national inventing patent [CN201610124657.8] provides a kind of high glow-wire, high CTI value flame-proof glass fibre enhancing PBT And preparation method thereof, national inventing patent [CN201410852365.7] also provides a kind of nonflammable resistance of 850 degree of glowing filaments Combustion enhancing PBT plastic and preparation method thereof.
Enhancing flame-retardant PBT material in national inventing patent there is no particular requirement that for PBT resin, all be commercialization Common PBT resin, the fire retardant being related to is brominated Polystyrene, brominated epoxy resin, brominated triazine, TDE, bromine Change makrolon.So many patents are not studied odor problem in the enhancing actual applied at elevated temperature of flame-retardant PBT material. As domestic household electrical appliances slowly go to the world, Asian, African and Latin American third world countries are not only entered, and enter American-European-Japanese developed country, are write Name household electrical appliances manufacturer facilitates and splendid life body for the requirement more and more higher of material because they wish that product gives people to provide Test.Low smell strengthens the plastic items of flame-retardant PBT material manufacture, and penetrating odor will not be distributed in high temperature long-time use And toxic gas, it is ensured that Product Green environmental protection.
The content of the invention
The present invention provides a kind of low smell enhancing flame-retardant PBT material and preparation method thereof, and it can overcome prior art Penetrating odor and toxic gas that material is distributed in applied at elevated temperature.
The technical scheme that the present invention solves above-mentioned technical problem is as follows:A kind of low smell enhancing flame-retardant PBT material, its feature It is, is made up of the raw material of following percetage by weight:PBT resin 49.5-58%, fire retardant 11.5-13.5%, toughener 0- 3%, glass fibre 30%-33%, other auxiliary agents 0.5-1%.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
It is preferred that, the PBT resin is obtained by the production of PTA methods, and soluble organic low molecular content (SOC) is almost nil, Residual tetrahydrofuran is not contained particularly.
Specifically, the fire retardant is mixed by main flame retardant and synergistic flame retardant, main flame retardant is brominated polyphenylene second Alkene, the synergistic flame retardant is any of antimony oxide and sodium antimonate or two kinds of mixing.
It is preferred that, the weight ratio of the main flame retardant and synergistic flame retardant is 9.5-10.5:3.
It is preferred that, the toughener is low density polyethylene (LDPE), ethylene-acrylate and ethylene-acrylate-glycidol Any of ester or any a variety of mixing.
It is preferred that, the ethylene-acrylate-ethylene oxidic ester is ethylene-methyl acrylate-metering system
Acid glycidyl ester.
It is preferred that, the glass fibre is alkali-free chopped glass fiber or alkali-free continuous glass-fiber, the diameter 9- of the glass fibre 17um。
It is preferred that, other described auxiliary agents are calcium stearate, PE waxes, pentaerythritol stearate, silicone, antioxidant and nucleation Any of agent or any a variety of mixing.
Present invention also offers the preparation method that above-mentioned low smell strengthens flame-retardant PBT material, it comprises the following steps:It is first Then PBT resin is first taken into the PBT trees after drying in drying more than 4h at 115-125 DEG C according to corresponding percetage by weight Fat and fire retardant are simultaneously stirred and evenly mixed, and add the toughener and other auxiliary agents of corresponding percetage by weight, be again stirring for it is uniform, afterwards Raw material after mixing is put into extrusion equipment, while by side of the glass fibre of corresponding percetage by weight through the extrusion equipment Spout or glass fibre import are added, and eventually melting extrusion is produced.
It is preferred that, in dual-screw-stem machine the extrusion temperature of melting extrusion be 180-250 DEG C, screw speed be 330-360 turn/ Point.
Compared with prior art, the beneficial effects of the invention are as follows:
On the one hand, the PBT resin produced from PTA methods, it has a splendid heat endurance, ultralow terminal carboxylate group content and Ultra low gas volatilizees, and particularly material resin does not contain residual tetrahydrofuran (common PBT resin content of tetrahydrofuran is about 585.1mg/kg);On the other hand, the fire retardant of penetrating odor is not distributed from long-time high temperature, two aspects, which are combined, to be prepared Low smell enhancing flame-retardant PBT material is gone out, has solved and discharge penetrating odor during use and poisonous tetrahydrofuran Problem.The low smell enhancing flame-retardant PBT material that the present invention is provided has good heat endurance, and ultralow mold deposit is separated out, and exempts to wipe mould, Particularly injection molding product will not distribute penetrating odor at high temperature heat, available for electric cooker, electromagnetic oven, coffee machine, The production of the heat-resistant parts such as Garment Steamer Machine, electric oven, be particularly suitable for use in warm-air drier air outlet grate.
Embodiment
Technical scheme is described in further detail below in conjunction with specific embodiment, example is served only for The present invention is explained, the scope of the present invention is not intended to limit.
The method used in following examples of the present invention is conventional method without special instruction, following examples of the present invention The middle raw material used are commercially available prod without special instruction.Given birth to specifically, PBT resin is Nantong stars company with PTA methods The starester@HQ- II of production;Main flame retardant is the brominated Polystyrene B-701 that Japanese tail closes production;Synergistic flame retardant is lake Nan Chen states regular grade antimony oxide, purity 99.8%;Toughener is that the silicone master batch included in Du Pont PTW, other auxiliary agents is DOW CORNING MB50-002.
Strengthen the preparation method of flame-retardant PBT material the invention provides a kind of low smell, it comprises the following steps:First will PBT resin is in drying more than 4h (can be effectively by moisture content and some low molecular weight volatile organic matter removals) at 115-125 DEG C, so Take PBT resin and fire retardant after drying according to corresponding percetage by weight afterwards and be added into homogenizer and mix, The toughener and other auxiliary agents of corresponding percetage by weight are added, is well mixed in homogenizer, afterwards by after mixing Raw material is put into double screw extruder, while the glass fibre of corresponding percetage by weight is added through side feeding or glass fibre import Enter, eventually melting extrusion, produce, in dual-screw-stem machine the extrusion temperature of melting extrusion be 180-250 DEG C, screw speed be 330-360 revs/min.
Each embodiment and comparative example are prepared shown in the raw material table specific as follows used during PBT material:
Component Embodiment 1 Embodiment 2 Embodiment 3 Comparative example 1 Comparative example 2 Comparative example 3
PBT resin (PTA methods) 56.5 53 49.5 56.5 56.5 0
Common PBT resin (DMT methods) 0 0 0 0 0 49.5
Brominated Polystyrene 9.5 10 10.5 0 0 10.5
Brominated epoxy resin 0 0 0 9.5 0 0
Brominated triazine 0 0 0 0 9.5 0
Synergistic flame retardant 3 3 3 3 3 3
Toughener 0 3 3 0 0 3
Antioxidant 0.3 0.3 0.2 0.3 0.3 0.2
Calcium stearate 0.2 0.2 0.5 0.2 0.2 0.5
Silicone master batch 0.5 0.5 0.3 0.5 0.5 0.3
Glass fibre 30 30 33 30 30 33
Performance test
The anti-flammability of the enhancing flame-retardant PBT material prepared using corresponding national standard to embodiment 1 to 3 and comparative example 1 and 3, Izod notched impact strength, tensile strength and VOC are tested, as a result as shown in the table:
From the test data of embodiment 1,2,3, material does not distribute 2 with serious penetrating odor, 4,6- tribromo-benzenes Phenol, 2,6- dibromophenols and toxic gas tetrahydrofuran.Embodiment 1,2 is understood with comparative example 1,2, due to making in comparative example 1,2 It is fire retardant with brominated epoxy resin and brominated triazine fire retardant, therefore obtained PBT material is distributed with serious excitant gas 2,4,6- tribromphenols, the 2,6- dibromophenols of taste;Embodiment 3 is different from the PBT raw materials of comparative example 3, and embodiment 3 is not detected To tetrahydrofuran, and comparative example 3 detects tetrahydrofuran, it is seen that PBT resin is also the key of low smell.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (10)

1. a kind of low smell enhancing flame-retardant PBT material, it is characterised in that be made up of the raw material of following percetage by weight:PBT resin 49.5-58%, fire retardant 11.5-13.5%, toughener 0-3%, glass fibre 30%-33%, other auxiliary agents 0.5-1%.
2. a kind of low smell enhancing flame-retardant PBT material according to claim 1, it is characterised in that the PBT resin by The production of PTA methods is obtained.
3. a kind of low smell enhancing flame-retardant PBT material according to claim 1, it is characterised in that the fire retardant is by leading Fire retardant and synergistic flame retardant are mixed, and main flame retardant is brominated Polystyrene, and the synergistic flame retardant is antimony oxide With any of sodium antimonate or two kinds of mixing.
4. a kind of low smell enhancing flame-retardant PBT material according to claim 3, it is characterised in that the main flame retardant with The weight ratio of synergistic flame retardant is 9.5-10.5:3.
5. a kind of low smell enhancing flame-retardant PBT material according to claim 1, it is characterised in that the toughener is low Any of density polyethylene, ethylene-acrylate and ethylene-acrylate-ethylene oxidic ester or any a variety of mixing.
6. a kind of low smell enhancing flame-retardant PBT material according to claim 5, it is characterised in that the ethylene-acrylic acid Ester-ethylene oxidic ester is ethylene-methyl acrylate-glyceryl methacrylate.
7. a kind of low smell enhancing flame-retardant PBT material according to claim 1, it is characterised in that the glass fibre is Alkali-free chopped glass fiber or alkali-free continuous glass-fiber, the diameter 9-17um of the glass fibre.
8. a kind of low smell enhancing flame-retardant PBT material according to any one of claim 1 to 7, it is characterised in that it is described its His auxiliary agent is any of calcium stearate, PE waxes, pentaerythritol stearate, silicone, antioxidant and nucleator or any many The mixing planted.
9. a kind of a kind of low smell as described in any one of claim 1 to 8 strengthens the preparation method of flame-retardant PBT material, it is special Levy and be, comprise the following steps:First by PBT resin in drying more than 4h at 115-125 DEG C, then according to corresponding weight hundred Fraction take PBT resin and the fire retardant after drying and and stir and evenly mix, add corresponding percetage by weight toughener and its His auxiliary agent, is again stirring for mixing, the raw material after mixing is put into extrusion equipment afterwards, while by the glass of corresponding percetage by weight The side spout of the extruded equipment of glass fiber or glass fibre import are added, and eventually melting extrusion is produced.
10. a kind of low smell according to claim 9 strengthens the preparation method of flame-retardant PBT material, it is characterised in that described Extrusion equipment is double screw extruder, and the extrusion temperature of melting extrusion is 180-250 DEG C, screw speed in double screw extruder For 330-360 revs/min.
CN201710601118.3A 2017-07-21 2017-07-21 A kind of low smell enhancing flame-retardant PBT material and preparation method thereof Pending CN107266877A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1980996A (en) * 2004-06-29 2007-06-13 三菱工程塑料株式会社 Flame-retardant polybutylene terephthalate composition and molded product
CN101928449A (en) * 2010-09-06 2010-12-29 上海俊尔新材料有限公司 High glowing filament ignition temperature inflaming retarding reinforced poly(butylene terephthalate)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1980996A (en) * 2004-06-29 2007-06-13 三菱工程塑料株式会社 Flame-retardant polybutylene terephthalate composition and molded product
CN101928449A (en) * 2010-09-06 2010-12-29 上海俊尔新材料有限公司 High glowing filament ignition temperature inflaming retarding reinforced poly(butylene terephthalate)

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