CN101139462A - Carbon fiber reinforcement non-bittern flame-proof nylon 66 and preparation method thereof - Google Patents
Carbon fiber reinforcement non-bittern flame-proof nylon 66 and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a carbon-reinforced halogen-free fire-resistant nylon 66, which comprises by weight: nylon 66 resin 30-50 portions, long carbon fiber 10-50 portions, covering red phosphorus substrate 5-20 portions, fire resisting assistant 0-20 portions, flexibilizer 0-10 portions, antioxidant 0.1-1 portions, and processing assistant 0.1-15 portions. The carbon-reinforced halogen-free fire-resistant nylon 66 made by the invention is of high strength, high modulus, small creepage, and permanent anti-static performance, also good fire resistance, high mechanical strength, is resistant to high temperature, light, easy to process, with good fire resistance, and is also environmental friendly. The preparing method of the invention is simple to operate and applicable for industrialized production.
Description
Technical field
The invention belongs to technical field of polymer materials, particularly a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 and preparation method thereof.
Background technology
At present, on the market for nylon strengthen fire-retardant the most general be exactly glass enhanced nylon, the halogenated flame retardant that fire retardant uses mostly so causes existing fiberglass reinforced fire retardant nylon 66 because environmental protection and performance demands more and more can not satisfy the needs of industrial development.The appearance of carbon fiber is the revolution on the material history, carbon fiber is the high performance material of present world first-selection, have high strength, high-modulus, high temperature resistant, antifatigue, conduction, light weight, easy multiple excellent properties such as processing, just progressively conquer and replace traditional material.Carbon fiber is except being widely used in space flight, aviation and military field, begun to be deep into the every field of national economy at civilian reverse side, comprise every field such as mechano-electronic, material of construction, style, chemical industry, medical treatment, particularly fire-retardant enhanced carbon fibre material.Yet,, more urgent to the requirement of Halogen, low-smoke low-toxicity fire retardant material in the face of more and more stricter environmental protection, safety requirements.Particularly formal implement the RoHS of European Union instruction on July 1st, 2006, the research of bittern-free flame-proof material has been obtained the great attention of various countries, the market requirement of product is also more urgent.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the carbon fiber reinforcement non-bittern flame-proof nylon 66 of the good and compliance with environmental protection requirements of a kind of mechanical property.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of carbon fiber reinforcement non-bittern flame-proof nylon 66, its composition (weight ratio) is: Nylon 66: 30～50 parts, the long fibre of carbon fiber: 10～50 parts, encapsulated red phosphorus masterbatch: 5～20 parts, fire retarding synergist: 0～20 part, and toughner: 0～10 part, oxidation inhibitor: 0.1～1 part, processing aid: 0.2～1.5 part;
A kind of preparation method of carbon fiber reinforcement non-bittern flame-proof nylon 66:
1): take by weighing raw material according to weight proportion;
2): the Wrapped up Phosphorus Fire Retardant masterbatch is stirred in the machine at height and mixes through adding fire retarding synergist after the surface treatment;
3): the Nylon 66 after drying handled adds behind material, oxidation inhibitor, toughner and the processing aid that obtains through step (1) to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added the long fibre of carbon fiber;
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
The invention has the beneficial effects as follows: the carbon fiber reinforcement non-bittern flame-proof nylon 66 of making by the present invention has the advantages that high strength, high-modulus, creep are little, permanent antistatic is arranged, in addition, good flame resistance, physical strength height, high temperature resistant, light weight, easily processing, and have flame retardant properties preferably, also can satisfy people to environmental protection requirement; Preparation method of the present invention is simple to operate, is fit to suitability for industrialized production.
Embodiment
A kind of carbon fiber reinforcement non-bittern flame-proof nylon 66, its composition (weight ratio) is: Nylon 66: 30～50 parts, the long fibre of carbon fiber: 10～50 parts, encapsulated red phosphorus masterbatch: 5～20 parts, fire retarding synergist: 0～20 part, and toughner: 0～10 part, oxidation inhibitor: 0.1～1 part, processing aid: 0.2～1.5 part;
The long fibre of carbon fiber that this product uses preferably adopts polyacrylonitrile carbon fiber; Fire retarding synergist be N the halogen-free flame retardants of P series, it mainly comprises Mg (OH)
3, Al (OH)
3In a kind of or two kinds of composite forming; Toughner is maleic anhydride grafts, as: one or several among EPDM, POE, SBS, the SEBS combine; Oxidation inhibitor is antioxidant 1010 and oxidation inhibitor 168 composite forming; In addition, the lubricant that adopts in the processing aid bright lubricant of TAF series preferably.
A kind of preparation method of carbon fiber reinforcement non-bittern flame-proof nylon 66:
1): take by weighing raw material according to weight proportion;
2): the Wrapped up Phosphorus Fire Retardant masterbatch is stirred in the machine at height and mixes through adding fire retarding synergist after the surface treatment;
3): the Nylon 66 after drying handled adds behind material, oxidation inhibitor, EPDM and the processing aid that obtains through step (1) to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added the long fibre of carbon fiber; Described feeder rotating speed is 180～240r.p.m, in addition, the temperature of each of twin screw extruder section temperature from the charging opening to the head is respectively 250 ℃, 265 ℃, 270 ℃, 270 ℃, 270 ℃, 270 ℃, 265 ℃, its rotating speed is 180～280r.p.m, and mixture is subjected to shearing, fusion, Combined Processing in twin screw extruder.
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
This product improves its mechanical property in order effectively to strengthen the interface interaction of resin and fire retardant product, and step (2) and (4) described surface treatment are to handle through silane coupling agent.
For ease of the present invention is further understood, now describe the present invention in conjunction with specific embodiments.
Embodiment 1:
1): take by weighing raw material according to weight proportion;
2): will add 10 parts of Mg (OH) after the surface treatment of 20 parts of Wrapped up Phosphorus Fire Retardant masterbatch processes
3Stir in the machine at height and to mix;
3): the Nylon 66 after 50 parts of dryings are handled adds behind the material that obtains through step (1), 0.3 part of oxidation inhibitor, 5 parts of POE and the 0.2 part of processing aid to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added 10 parts of polyacrylonitrile carbon fibers; Described feeder rotating speed is 180r.p.m, and in addition, the temperature of each of twin screw extruder section temperature from the charging opening to the head is respectively 250 ℃, 265 ℃, 270 ℃, 270 ℃, 270 ℃, 270 ℃, 265 ℃, and its rotating speed is 180r.p.m.
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
The specific performance of the carbon fiber of gained enhancing fire-retardant Nylon 66 particle after injection moulding is in this implementation method: tensile strength is 130MPa, flexural strength is 180MPa, modulus in flexure is 10500MPa, and cantilever beam impact strength is 7.5MPa, vertical combustion (1.6mm) FV-0.
Embodiment 2:
1): take by weighing raw material according to weight proportion;
2): will add 10 parts of Al (OH) after the surface treatment of 20 parts of Wrapped up Phosphorus Fire Retardant masterbatch processes
3Stir in the machine at height and to mix;
3): the Nylon 66 after 47 parts of dryings are handled adds behind the material that obtains through step (1), 0.3 part of oxidation inhibitor, 8 parts of toughner and the 0.3 part of processing aid to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added 15 parts of polyacrylonitrile carbon fibers; Described feeder rotating speed is 220r.p.m, and in addition, the temperature of each of twin screw extruder section temperature from the charging opening to the head is respectively 250 ℃, 265 ℃, 270 ℃, 270 ℃, 270 ℃, 270 ℃, 265 ℃, and its rotating speed is 220r.p.m.
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
The specific performance of the carbon fiber of gained enhancing fire-retardant Nylon 66 particle after injection moulding is in this implementation method: tensile strength is 150MPa, flexural strength is 220MPa, modulus in flexure is 12000MPa, and cantilever beam impact strength is 7.0MPa, vertical combustion (1.6mm) FV-0.
Embodiment 3:
1): take by weighing raw material according to weight proportion;
2): will add 10 parts of Mg (OH) after the surface treatment of 15 parts of Wrapped up Phosphorus Fire Retardant masterbatch processes
3And Al (OH)
3Mixture stirs in the machine at height and mixes;
3): the Nylon 66 after 40 parts of dryings are handled adds behind the material that obtains through step (1), 0.3 part of oxidation inhibitor, 5 parts of SBS and the 0.2 part of processing aid to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added 30 parts of glass fibre; Described feeder rotating speed is 180r.p.m, and in addition, the temperature of each of twin screw extruder section temperature from the charging opening to the head is respectively 250 ℃, 265 ℃, 270 ℃, 270 ℃, 270 ℃, 270 ℃, 265 ℃, and its rotating speed is 270r.p.m.
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
The specific performance of the carbon fiber of gained enhancing fire-retardant Nylon 66 particle after injection moulding is in this implementation method: tensile strength is 200MPa, flexural strength is 285MPa, modulus in flexure is 15500MPa, and cantilever beam impact strength is 5.6MPa, vertical combustion (1.6mm) FV-0.
The carbon fiber reinforcement non-bittern flame-proof nylon 66 of making by the present invention has The characteristics that high strength, high-modulus, creep is little, have permanent antistatic, in addition, resistance Combustion property is good, mechanical strength is high, high temperature resistant, light weight, easily processing, and has better Fire resistance, also can satisfy people to the requirement of environmental protection; Preparation method of the present invention Simple to operate, be fit to suitability for industrialized production.
Claims (10)
1. carbon fiber reinforcement non-bittern flame-proof nylon 66, it is characterized in that: forming (weight ratio) is: Nylon 66: 30～50 parts, the long fibre of carbon fiber: 10～50 parts, encapsulated red phosphorus masterbatch: 5～20 parts, fire retarding synergist: 0～20 part, and toughner: 0～10 part, oxidation inhibitor: 0.1～1 part, processing aid: 0.2～1.5 part.
2. a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 1, it is characterized in that: Nylon 66: 40 parts, the long fibre of carbon fiber: 30 parts, encapsulated red phosphorus masterbatch: 10 parts, fire retarding synergist: 5 parts, toughner: 5 parts, oxidation inhibitor: 0.3 part, processing aid: 0.5 part.
3. a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 1 is characterized in that: the long fine polyacrylonitrile carbon fiber that is of described carbon fiber.
4. a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 1 is characterized in that: described toughner is maleic anhydride grafts.
5. a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 1 is characterized in that: described oxidation inhibitor is antioxidant 1010 and oxidation inhibitor 168 composite forming.
6. preparation method of carbon fiber reinforcement non-bittern flame-proof nylon 66 as claimed in claim 1 or 2 is characterized in that:
1): take by weighing raw material according to weight proportion;
2): the Wrapped up Phosphorus Fire Retardant masterbatch is stirred in the machine at height and mixes through adding fire retarding synergist after the surface treatment;
3): the Nylon 66 after drying handled adds behind material, oxidation inhibitor, toughner and the processing aid that obtains through step (1) to stir in the machine at height and mixes after surface treatment;
4): the material that step (3) obtains is sent in the twin screw extruder through feeder, and in the side direction charging opening of twin screw extruder, added the long fibre of carbon fiber;
5): the material that step (4) is obtained passes through tie rod, cooling, pelletizing, drying treatment.
7. the preparation method of a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 6, it is characterized in that: the feeder rotating speed of step (4) is 180～240r.p.m.
8. the preparation method of a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 6, it is characterized in that: the temperature of each section temperature from the charging opening to the head of the twin screw extruder of step (4) is respectively 250 ℃, 265 ℃, 270 ℃, 270 ℃, 270 ℃, 270 ℃, 265 ℃.
9. the preparation method of a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 6, it is characterized in that: the twin screw rotating speed of step (4) is 180～280r.p.m.
10. the preparation method of a kind of carbon fiber reinforcement non-bittern flame-proof nylon 66 according to claim 6 is characterized in that: step (2) and (4) described surface treatment are to handle through silane coupling agent.
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|---|---|---|---|
| CNB200710030839XA CN100532457C (en) | 2007-10-09 | 2007-10-09 | Carbon fiber reinforcement non-bittern flame-proof nylon 66 preparation method |
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|---|---|---|---|
| CNB200710030839XA CN100532457C (en) | 2007-10-09 | 2007-10-09 | Carbon fiber reinforcement non-bittern flame-proof nylon 66 preparation method |
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| CN100532457C CN100532457C (en) | 2009-08-26 |
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