CN101565536B - Flame-retardant polybutylece terephthalate resin composition with high glow wire ignition temperature - Google Patents
Flame-retardant polybutylece terephthalate resin composition with high glow wire ignition temperature Download PDFInfo
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Abstract
The invention discloses a flame-retardant polybutylece terephthalate resin composition with high glow wire ignition temperature, which consists of polybutylece terephthalate, a synergistic resin with high GWIT, a flame retardant, a flame-retardant synergistic agent, an inorganic filler, a toughener, a main antioxidant, an auxiliary antioxidant, an anti-dripping agent, and glass fiber. The composition has good flame-retardant effect and fireproof performance, and high glow wire ignition temperature.
Description
Technical field:
The present invention relates to a kind of polymeric material field, is a kind of resin combination.
Background technology:
PBT (enhancing, modified PBT) is mainly used in fields such as automobile, electronic apparatus, mechanical industry.The component parts that wherein is used for electronic apparatus industry mainly contains the deflection skeleton of televisor, output transformer skeleton, switch connector, electricrefrigerator, motor for washer end cap etc.Some components and parts in these electronic products can cause local superheating and possibly cause burning in reasons such as loose contact, overload or short circuits, jeopardize the safe operation of total system.Prevent trouble before it happens; The ignition hazard of the parts in the electric equipment products, part and element must drop to certain degree, and especially 09 year all white domestic appliances industry all proposes, the glowing filament ignition temperature of employed material (Glow-wireignitability test; GWIT) value must reach three thickness (3mm; 1.5mm, 0.75mm) all will be more than 750 ℃, this to present application the most widely bromine system strengthen the flame-retardant PBT system and proposed brand-new requirement.
Concerning strengthening flame-retardant PBT, open source information show nitrogen phosphorus series non-halogen flame-retardant reinforced PBT only 3mm thickness can reach 750 ℃ requirement, can't satisfy three thickness (3mm, 1.5mm 0.75mm) all will be in the requirement more than 750 ℃; And for present application the most widely bromine be the flame-retardant reinforced PBT system; Under the situation that adds the capacity fire retardant, three thickness (3mm, 1.5mm; 0.75mm) bromine be that the GWIT of flame-retardant reinforced PBT only reaches 675 ℃, 650 ℃, 625 ℃, and require gap very far away.Therefore, to be widely used in the bromine of high glowing filament ignition temperature of white domestic appliances industry be that flame-retardant enhanced PBT material is the task of top priority in exploitation.
Summary of the invention:
The object of the present invention is to provide a kind of have good flame-retardant effect and fire resistance, high glowing filament ignition temperature flame-retardant polybutylene terephthalate resin combination that glowing filament ignition temperature is high.
Technical solution of the present invention is:
A kind of high glowing filament ignition temperature flame-retardant polybutylene terephthalate resin combination is characterized in that: calculate by weight, be made up of following component:
Polybutylene terephthalate 50-100
High GWIT synergistic resin 0-50
Fire retardant 10-30
Fire retarding synergist 5-15
Mineral filler 0-20
Toughner 0-10
Primary antioxidant 0-0.5
Auxiliary antioxidant 0-0.5
Antidrip agent 0-0.5
Spun glass 40-80.
The viscosity of described polybutylene terephthalate is 0.6-1.3dl/g.
Described high GWIT synergistic resin is polymeric amide, PTT, polyethylene terephthalate, polycarbonate or polyphenylene oxide resin.
Described fire retardant is decabromodiphynly oxide, eight bromo ether, hexabromocyclododecane, tetrabromo-bisphenol, brominated epoxy resin or TDE; Described fire retarding synergist is the oxide compound or the stibnate of antimony.
Described mineral filler is Marinco H, white lake or zinc borate.
Described toughner is polyolefin elastomer POE, ethylene-propylene acid butyl ester 3135, ethylene-ethyl acrylate copolymer EEA, TEB 3K-butadiene-styrene MBS, ethylene-methyl acrylate-SY-Monomer G random terpolymer AX8900 or thermoplastic elastomer TPR.
Described primary antioxidant is 2; 6-di-t-butyl-4-cresols, 3; 5-di-tert-butyl-hydroxy phenyl propionic acid stearyl alcohol ester, 4 ' 4-thiobis (6-tert-butyl o cresols), 2 ' 2 '-methylene-bis (4-methyl-6-tert butyl phenol) or four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; Described auxiliary antioxidant is thio-2 acid 2 stearyl ester, Tyox B, tricresyl phosphite (2,4-di-tert-butyl phenolic ester) or triphenyl phosphite.
Described oxidation inhibitor also can be B215, B225, B900, JC1215, JC1225 etc. for having the compound of primary antioxidant and auxiliary antioxidant effect simultaneously.
Described Antidrip agent is a tetrafluoroethylene.
The spun glass of described spun glass for handling through interface modifier.
The present invention has good flame-retardant effect and fire resistance, glowing filament ignition temperature is high.
Below in conjunction with embodiment the present invention is described further.
Embodiment:
Each raw material weight umber is seen table 1
Comparative Examples 1
100 parts of polybutylene terephthalates (PBT) were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist Antimony Trioxide: 99.5Mins, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 1
85 parts of polybutylene terephthalates (PBT) and 15 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist Antimony Trioxide: 99.5Mins, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 2
70 parts of polybutylene terephthalates (PBT) and 30 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist Antimony Trioxide: 99.5Mins, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 3
55 parts of polybutylene terephthalates (PBT) and 45 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist Antimony Trioxide: 99.5Mins, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 4
70 parts of polybutylene terephthalates (PBT) and 30 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist stibnates, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 5
70 parts of polybutylene terephthalates (PBT) and 30 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist ANTIMONY TRIOXIDE SB 203 99.8 PCTs, 10 parts of mineral fillers, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
Embodiment 6
70 parts of polybutylene terephthalates (PBT) and 30 parts high GWIT synergistic resins were descended dry 2-3 hour at 120 ℃, the control moisture content＜below 0.05%, high-speed mixer and mixing 3min; Subsequently 26 parts of fire retardants, 10 parts of fire retarding synergist stibnates, 10 parts of mineral fillers, 2 parts of toughner AX8900,0.3 part of primary antioxidant AT10,0.3 part of auxiliary antioxidant AT168,0.4 part of Antidrip agent tetrafluoroethylene are added the high mixer high speed and mix 5min; Get into twin screw extruder plasticizing, fusion from the metering feeding device; The alkali free glass fibre that in twin screw extruder, adds simultaneously 30% weight, through routine extrude, tie rod, cooling, pelletizing, all mix, packing.Pellet prepares test bars by injection moulding machine then at 120 ℃ of dry 4h of air dry oven.
The composition properties test result is seen table 2 in embodiment and the Comparative Examples.
The raw material weight umber proportioning of table 1 embodiment 1～6, Comparative Examples 1
Composition properties test result in table 2 embodiment and the Comparative Examples
Claims (3)
1. high glowing filament ignition temperature flame-retardant polybutylene terephthalate resin combination is characterized in that: calculate by weight, be made up of following component:
Described high GWIT synergistic resin is a polycarbonate; Described fire retardant is eight bromo ether, hexabromocyclododecane, tetrabromo-bisphenol, brominated epoxy resin or TDE; Described fire retarding synergist is the oxide compound or the stibnate of antimony; Said mineral filler except that spun glass is Marinco H, white lake or zinc borate; Described Antidrip agent is a tetrafluoroethylene; Described toughner is ethylene-methyl acrylate-SY-Monomer G random terpolymer AX8900; The viscosity of described polybutylene terephthalate is 0.6-1.3dl/g.
2. high glowing filament ignition temperature flame-retardant polybutylene terephthalate resin combination according to claim 1; It is characterized in that: described primary antioxidant is 2; 6-di-t-butyl-4-cresols, 3; 5-di-tert-butyl-hydroxy phenyl propionic acid stearyl alcohol ester, 4 ' 4-thiobis (6-tert-butyl o cresols), 2 ' 2 '-methylene-bis (4-methyl-6-tert butyl phenol) or four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; Described auxiliary antioxidant is thio-2 acid 2 stearyl ester, Tyox B, tricresyl phosphite (2,4-di-tert-butyl phenolic ester) or triphenyl phosphite.
3. high glowing filament ignition temperature flame-retardant polybutylene terephthalate resin combination according to claim 1 is characterized in that: the spun glass of described spun glass for handling through interface modifier.
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