CN105924863A - Flam-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and preparation method thereof - Google Patents
Flam-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and preparation method thereof Download PDFInfo
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- CN105924863A CN105924863A CN201610454057.8A CN201610454057A CN105924863A CN 105924863 A CN105924863 A CN 105924863A CN 201610454057 A CN201610454057 A CN 201610454057A CN 105924863 A CN105924863 A CN 105924863A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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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
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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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
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a flame-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and a preparation method thereof. The flame-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and the preparation method thereof are characterized in that steel fibers and carbon fibers are used to improve the tensile strength and the friction property of polytetrafluoroethylene; meanwhile, fine filler such as SiO2 and Al powder is sintered to the surface of the polytetrafluoroethylene at high temperature by using an improved melting method, so that the surface sintering state of the polytetrafluoroethylene is improved, and the joint strength is remarkably improved. In addition, by adding flame retardants such as antimonous oxide and DBDPE, the fire resistance of coating can be improved, and potential hazards of fire are reduced.
Description
Technical field
The present invention relates to carbon fiber, steel fiber surface modification and modified materials of polytetrafluoroethyland field, particularly relate to a kind of fire-retardant carbon fiber, steel fibre modified teflon material and preparation method thereof.
Background technology
Politef (PTFE) is high temperature resistant and low temperature, resistance to chemical attack, do not absorb water, coefficient of friction is low, dielectric properties are excellent, have " King ". but be because surface energy low (surface tension is called (31～34) × 10-3 N/m), degree of crystallinity height and molecular chain structure symmetry and present nonpolar, cause makes it difficult to be bondd, and restricts its application at valve seal Material Field.For this, scientist takes multiple means to attempt solving the surface adhesion problem of PTFE, wherein more about the surface texture or property Quality Research changing PTFE. mainly have: 1) method of chemical treatment, as processed with sodium-naphthalene complex or silicic acid, PTFE moistened surface angle is made to reduce, surface tension improves, make it can be glued .2 by viscous being changed into of difficulty) lower temperature plasma technology process, by air, noble gas and can reacting gas dissociation, have an effect with PTFE surface, form polar group.3) radiation graft process, uses the energy of Co 60 that reaction monomers, with PTFE surface, styrene, methacrylate etc. can be occurred chemical grafting polymerization, forms one layer of graft polymers being prone to bonding on PTFE surface.4) high-temperature melting method, at high temperature making to embed surface in PTFE can adhesion substance high, easy.This method gets involved in PTFE molecule due to easy adhesive material, can reach adhesion strength more higher than other several methods.
But PTFE there is also, and creep resistance is poor, easy-cold flow, resilience are poor, bearing capacity is low, linear expansion coefficient is big, the distinct disadvantage such as easy softening under high temperature (260 DEG C).In order to overcome these shortcomings, researcher typically uses carbon fiber, glass fibre, tin bronze powder, graphite, sulfur dioxide etc. to carry out filled polytetrafluoroethylene as encapsulant both at home and abroad, wherein carbon fiber is the packing material that Application comparison is extensive and respond well, department of physics's energy of PTFE composite, mechanical property, anti-wear performance etc. can be improved, can be widely applied to the industries such as hydraulic jack, cylinder seal element, valve seal element, Fluid-transmission machinery.Same, steel fibre is big due to its density, excellent in mechanical performance and be widely used in every field.
But steel fibre and carbon fiber surface inertia are big, directly affects the mechanical property of composite, limit steel fibre and the high performance performance of carbon fiber.It is thus desirable to be modified carbon fiber and steel fiber surface processing, to improve its caking property to matrix, improve interface performance.
Antimony oxide, is commonly called as stibium trioxide, is a kind of amphoteric oxide, and pulverability is little, heat-resisting, heats flavescence color, returns white after cooling.Antimony oxide coordinates with halogen contained compound, fire retardation is played in their thermal decomposition process, fire retardant rate is high, little for base material Effect on Mechanical Properties, it is widely used in the plastics such as PVC, PP, PE, ABS, PU as fire retardant application it can also be used to electric wire and cable sheath is applied and optical fiber cable sheath.
Summary of the invention
The technical problem that present invention mainly solves is to provide the formula of a kind of modified teflon material, and the polytetrafluoroethylmaterial material viscosity, wearability and the sealing that make according to this formula are good, and have fire protection flame retarding function.
The technical problem to be solved uses following technical scheme to realize:
1. a fire-retardant carbon fiber, steel fibre modified teflon material, it is characterised in that prepared by the raw material of following weight parts:
Antimony oxide 20-30, politef 80-90, carbon fiber 10-15, steel fibre 5-10, fluorine rubber powder 5-10, five oxidation three antimony 5-10, graphene oxide 1-3, SiO25-10, Silane coupling agent KH550 15-20, TDE 20-30,95% ethanol 30-40, acetic acid is appropriate, polyisocyanate JQ-1 5-10, dimethylformamide (DMF) 15-20, DMAP (DMAP) 10-15, dicyclohexylcarbodiimide (DCC) 15-20, water 90-100 part；
Described carbon fiber median length is 75-150 μm, and steel fibre median length is 50-150 μm, and fluorine rubber powder granularity is 80-200 mesh.
2. a kind of fire-retardant carbon fiber described in, the preparation method of steel fibre modified teflon material, it is characterised in that be made up of step in detail below:
A. being added by carbon fiber in the alcohol solvent of 20-25 part 95%, ultrasonic disperse is uniform, and adding second acid for adjusting pH is 4-5, adds 8-12 part Silane coupling agent KH550, stirs 8-15h, is washed with deionized afterwards, vacuum drying；
B., in remaining 95% alcohol solvent, by glow discharge plasma technology, graphene oxide is oxidized to peroxidating Graphene；
C. peroxidating Graphene step b obtained joins in dimethylformamide (DMF), ultrasonic 2～3h, stirring, it is sequentially added into 4-dimethylamino naphthyridine (DMAP), dicyclohexylcarbodiimide (DCC) and the carbon fiber of step a gained, normal-temperature reaction 18-36h, it is washed with deionized afterwards, vacuum drying, obtains the carbon fiber after the grafting of peroxidating Graphene；
D. joining in polyisocyanate JQ-1 by rubber powder, after mechanical agitation is uniform, add the steel fibre being dried, continued mechanical stirs 1-3 hour, washing, dry；
E. the carbon fiber after being grafted by step c gained peroxidating Graphene, step d gained mixture arise from high-speed mixer with the politef one of 70-75 part mixs homogeneously, after cold moudling, 360-390 DEG C of sinter molding in air atmosphere, obtains diameter 150-250 mm, the plate tensile sample of thickness 3～4mm；
F. the plate tensile sample of step e gained is immersed in lotion, take out after 4-8 minute, after drying in the baking oven of 80-100 DEG C, be put in Muffle furnace and sinter 10-30 minute at a temperature of 120-200 DEG C, take out；
The compound method of described lotion is: SiO2After ground machine grinds, being dispersed in water together with antimony oxide, antimony pentoxide, TDE, remaining politef and remaining Silane coupling agent KH550, ultrasonic disperse uniformly and get final product.
The invention has the beneficial effects as follows:Carbon fiber surface surface roughness after grafted graphene oxide dramatically increases, and then improves its surface wettability and caking property, improves the interface bond quality of carbon fibre composite.The steel fibre processed by polyisocyanate JQ-1 bonds together with rubber powder and polyisocyanate JQ-1, adds steel fibre in the raising of the caking property of matrix, beneficially composite materials property.Further, by high-temperature melting method, SiO2 is filled into PTFE surface, can substantially carry the glue-joint strength of carbon fiber PTFE composite, and operating procedure is simple, it is easy to use.Further, antimony oxide coordinates with halogen contained compound, plays fire retardation in their thermal decomposition process, and fire retardant rate is high, little for base material Effect on Mechanical Properties.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with specific embodiment, the present invention is expanded on further.
Embodiment
A kind of fire-retardant carbon fiber, steel fibre modified teflon material, it is characterised in that prepared by the raw material of following weight parts:
Antimony oxide 20, politef 80, carbon fiber 10, steel fibre 5, fluorine rubber powder 5, five oxidation three antimony 5, graphene oxide 1, SiO2 5, Silane coupling agent KH550 15, TDE 20,95% ethanol 30, acetic acid is appropriate, polyisocyanate JQ-1 5, dimethylformamide (DMF) 15, DMAP (DMAP) 10, dicyclohexylcarbodiimide (DCC) 15,100 parts of water；
Described carbon fiber median length is 75-150 μm, and steel fibre median length is 50-150 μm, and fluorine rubber powder granularity is 80-200 mesh.
Described a kind of fire-retardant carbon fiber, the preparation method of steel fibre modified teflon material, it is characterised in that be made up of step in detail below:
A. being added by carbon fiber in the alcohol solvent of 25 part 95%, ultrasonic disperse is uniform, and adding second acid for adjusting pH is 4-5, adds 10 parts of Silane coupling agent KH550s, stirs 8-15h, is washed with deionized afterwards, vacuum drying；
B., in remaining 95% alcohol solvent, by glow discharge plasma technology, graphene oxide is oxidized to peroxidating Graphene；
C. peroxidating Graphene step b obtained joins in dimethylformamide (DMF), ultrasonic 2～3h, stirring, it is sequentially added into 4-dimethylamino naphthyridine (DMAP), dicyclohexylcarbodiimide (DCC) and the carbon fiber of step a gained, normal-temperature reaction 18-36h, it is washed with deionized afterwards, vacuum drying, obtains the carbon fiber after the grafting of peroxidating Graphene；
D. joining in polyisocyanate JQ-1 by rubber powder, after mechanical agitation is uniform, add the steel fibre being dried, continued mechanical stirs 1-3 hour, washing, dry；
The politef one of carbon fiber, step d gained mixture and 70 parts after being e. grafted by step c gained peroxidating Graphene arises from mix homogeneously in high-speed mixer, after cold moudling, 360-390 DEG C of sinter molding in air atmosphere, obtains diameter 150-250 mm, the plate tensile sample of thickness 3～4mm；
F. the plate tensile sample of step e gained is immersed in lotion, take out after 4-8 minute, after drying in the baking oven of 80-100 DEG C, be put in Muffle furnace and sinter 10-30 minute at a temperature of 120-200 DEG C, take out；
The compound method of described lotion is: SiO2After ground machine grinds, being dispersed in water together with antimony oxide, antimony pentoxide, TDE, remaining politef and remaining Silane coupling agent KH550, ultrasonic disperse uniformly and get final product.
After tested:
Hot strength 17MPa；
Elongation at break 201%；
Impact strength 26KJ/m；
Bending strength 26MPa.
Claims (2)
1. a fire-retardant carbon fiber, steel fibre modified teflon material, it is characterised in that prepared by the raw material of following weight parts:
Antimony oxide 20-30, politef 80-90, carbon fiber 10-15, steel fibre 5-10, fluorine rubber powder 5-10, five oxidation three antimony 5-10, graphene oxide 1-3, SiO25-10, Silane coupling agent KH550 15-20, TDE 20-30,95% ethanol 30-40, acetic acid is appropriate, polyisocyanate JQ-1
5-10, dimethylformamide (DMF) 15-20, DMAP (DMAP)
10-15, dicyclohexylcarbodiimide
(DCC) 15-20, water 90-100 part；
Described carbon fiber median length is 75-150 μm, and steel fibre median length is 50-150 μm, and fluorine rubber powder granularity is 80-200 mesh.
A kind of fire-retardant carbon fiber the most according to claim 1, the preparation method of steel fibre modified teflon material, it is characterised in that be made up of step in detail below:
A. being added by carbon fiber in the alcohol solvent of 20-25 part 95%, ultrasonic disperse is uniform, and adding second acid for adjusting pH is 4-5, adds 8-12 part Silane coupling agent KH550, stirs 8-15h, is washed with deionized afterwards, vacuum drying；
B., in remaining 95% alcohol solvent, by glow discharge plasma technology, graphene oxide is oxidized to peroxidating Graphene；
C. peroxidating Graphene step b obtained joins in dimethylformamide (DMF), ultrasonic 2～3h, stirring, it is sequentially added into 4-dimethylamino naphthyridine (DMAP), dicyclohexylcarbodiimide (DCC) and the carbon fiber of step a gained, normal-temperature reaction 18-36h, it is washed with deionized afterwards, vacuum drying, obtains the carbon fiber after the grafting of peroxidating Graphene；
D. joining in polyisocyanate JQ-1 by rubber powder, after mechanical agitation is uniform, add the steel fibre being dried, continued mechanical stirs 1-3 hour, washing, dry；
E. the carbon fiber after being grafted by step c gained peroxidating Graphene, step d gained mixture arise from high-speed mixer with the politef one of 70-75 part mixs homogeneously, after cold moudling, 360-390 DEG C of sinter molding in air atmosphere, obtains diameter 150-250 mm, the plate tensile sample of thickness 3～4mm；
F. the plate tensile sample of step e gained is immersed in lotion, take out after 4-8 minute, after drying in the baking oven of 80-100 DEG C, be put in Muffle furnace and sinter 10-30 minute at a temperature of 120-200 DEG C, take out；
The compound method of described lotion is:
SiO2After ground machine grinds, being dispersed in water together with antimony oxide, antimony pentoxide, TDE, remaining politef and remaining Silane coupling agent KH550, ultrasonic disperse uniformly and get final product.
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| CN201610454057.8A CN105924863A (en) | 2016-06-22 | 2016-06-22 | Flam-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and preparation method thereof |
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| CN201610454057.8A CN105924863A (en) | 2016-06-22 | 2016-06-22 | Flam-retardant carbon fiber and steel fiber modified polytetrafluoroethylene material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010556A (en) * | 2010-10-20 | 2011-04-13 | 上海倍夫克阀门有限公司 | Composite material for valve seal and preparation method thereof |
| CN102311619A (en) * | 2011-08-30 | 2012-01-11 | 上海金发科技发展有限公司 | High CTI brominated flame-retardant reinforced PBT material and preparation method thereof |
| CN104030272A (en) * | 2014-05-04 | 2014-09-10 | 浙江理工大学 | Graphene peroxide preparation method |
| CN105239357A (en) * | 2015-08-24 | 2016-01-13 | 哈尔滨工业大学 | Method of chemically-grafting graphene oxide onto surface of carbon fiber |
-
2016
- 2016-06-22 CN CN201610454057.8A patent/CN105924863A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010556A (en) * | 2010-10-20 | 2011-04-13 | 上海倍夫克阀门有限公司 | Composite material for valve seal and preparation method thereof |
| CN102311619A (en) * | 2011-08-30 | 2012-01-11 | 上海金发科技发展有限公司 | High CTI brominated flame-retardant reinforced PBT material and preparation method thereof |
| CN104030272A (en) * | 2014-05-04 | 2014-09-10 | 浙江理工大学 | Graphene peroxide preparation method |
| CN105239357A (en) * | 2015-08-24 | 2016-01-13 | 哈尔滨工业大学 | Method of chemically-grafting graphene oxide onto surface of carbon fiber |
Non-Patent Citations (1)
| Title |
|---|
| 杨秀英等: "表面处理对钢纤维/回收聚乙烯复合材料性能影响", 《齐齐哈尔大学学报》 * |
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