CN105440408A - Impact and cracking resistant material for combustion gas pipelines - Google Patents
Impact and cracking resistant material for combustion gas pipelines Download PDFInfo
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Abstract
The invention discloses an impact and cracking resistant material for combustion gas pipelines. The material comprises, by weight, 40-60 parts of high density polyethylene, 30-40 parts of ethylene propylene diene monomer, 20-30 parts of acrylonitrile-butadiene-styrene copolymer, 30-40 parts of carbon black, 1.8-2.6 parts of modified montmorillonite, 0.9-0.13 parts of modified carbon nanotubes, 20-30 parts of nonyl cyclohexanedicarboxylate, 20-30 parts of methyl acetylricinoleate, 15-20 parts of ammonium polyphosphate, 10-15 parts of zinc borate, 5-8 parts of red phosphorus, 1-3 parts of di-tert-butyl peroxide, 0.4-0.6 parts of dimethylaminopropylamine, 0.1-0.3 parts of a promoter CZ, 2-4 parts of a Ca/Zn composite stabilizer, 1-2 parts of zinc stearate, 1-2 parts of butylmercaptooxo stannane, 0.5-1 part of an antioxidant D, 0.3-0.5 parts of an antioxidant RD and 1-3 parts of polyethylene wax. The material has the advantages of good impact resistance and high toughness.
Description
Technical field
The present invention relates to gas pipeline field of material technology, particularly relate to a kind of gas pipeline shock resistance crack resistence material.
Background technology
Along with the fast development of urban economy, cities and towns Sweet natural gas cause, also at high speed development, is therefore had higher requirement to the quality of natural gas line.Generally use vinyl tube at present, relative to other tubing, vinyl tube possesses the plurality of advantages such as quality is light, corrosion-resistant, non-corroding, laying is convenient, connection is quick reliably, long service life.But along with city natural gas pipeline design pressure progressively improves, particularly source of the gas long distance pipeline in upstream enters city and lays, vinyl tube bearing capacity is not enough, problem that is easily cracking becomes clear day by day.Therefore the material exploring a kind of new gas pipeline is badly in need of.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of gas pipeline shock resistance crack resistence material, shock resistance of the present invention is good, and toughness is strong, and crack resistence performance is good.
A kind of gas pipeline shock resistance crack resistence material that the present invention proposes, its raw material comprises by weight: high density polyethylene(HDPE) 40-60 part, terpolymer EP rubber 30-40 part, acrylonitrile-butadiene-styrene copolymer 20-30 part, carbon black 30-40 part, modified montmorillonoid 1.8-2.6 part, modified carbon nano-tube 0.9-0.13 part, cyclohexane dicarboxylic acid appoints ester 20-30 part, acetylricinoleate alkyd methyl esters 20-30 part, ammonium polyphosphate 15-25 part, zinc borate 10-15 part, red phosphorus 5-8 part, ditertiary butyl peroxide 1-3 part, dimethylaminopropylamine 0.4-0.6 part, accelerant CZ 0.1-0.3 part, Ca/Zn one package stabilizer 2-4 part, Zinic stearas 1-2 part, butanethiol tin 1-2 part, antioxidant D 0.5-1 part, anti-aging agent RD 0.3-0.5 part, polyethylene wax 1-3 part,
Wherein, modified montmorillonoid is that sodium-based montmorillonite obtains through cetyl trimethylammonium bromide, vinyltrimethoxy silane modification;
Modified carbon nano-tube is that carboxylic carbon nano-tube obtains through vinyltrimethoxy silane modification.
Preferably, its raw material comprises by weight: high density polyethylene(HDPE) 45-55 part, terpolymer EP rubber 32-38 part, acrylonitrile-butadiene-styrene copolymer 23-27 part, carbon black 32-38 part, modified montmorillonoid 2-2.4 part, modified carbon nano-tube 0.1-0.12 part, cyclohexane dicarboxylic acid appoints ester 22-28 part, acetylricinoleate alkyd methyl esters 22-28 part, ammonium polyphosphate 17-23 part, zinc borate 11-13 part, red phosphorus 6-7 part, ditertiary butyl peroxide 1.5-2.5 part, dimethylaminopropylamine 0.45-0.55 part, accelerant CZ 0.15-0.25 part, Ca/Zn one package stabilizer 2.5-3.5 part, Zinic stearas 1.2-1.8 part, butanethiol tin 1.3-1.7 part, antioxidant D 0.6-0.8 part, anti-aging agent RD 0.35-0.45 part, polyethylene wax 1.5-2.5 part.
Preferably, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 120-140 DEG C, obtain blend composition with the speed banburying 8-12min of 200-400r/min, modified montmorillonoid is added in blend composition, modified carbon nano-tube, continue banburying 60-90min, add carbon black, cyclohexane dicarboxylic acid appoints ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 150-170 DEG C, with the speed banburying 20-30min of 500-600r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixes, continuation stirring 6-10min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material.
Preferably, in the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, stirs 60-90min with the speed of 200-400r/min, leave standstill swelling 25-30h, be warming up to 50-70 DEG C, drip the aqueous solution that massfraction is 3.5-4.5wt% cetyl trimethylammonium bromide, with the speed insulated and stirred 6-7h of 100-200r/min, filter, wash with water, dry, pulverize and obtain intermediate material; Intermediate material being added massfraction is in 1-2wt% vinyltrimethoxy silane ethanolic soln, is warming up to 40-60 DEG C, stirs 30-60min with the speed of 250-350r/min, and filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid.
Preferably, in the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1-2wt% vinyltrimethoxy silane ethanolic soln, and be warming up to 40-60 DEG C, ultrasonic 5-6h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube.
Preferably, in the preparation process of modified montmorillonoid, the aqueous solution of cetyl trimethylammonium bromide dropwises in 30min.
Preferably, in the preparation process of modified montmorillonoid, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 5-7:40-60.
Preferably, in the preparation process of modified montmorillonoid, the weight ratio of intermediate material, vinyltrimethoxy silane is 5-6:0.4-0.5.
Preferably, in the preparation process of modified carbon nano-tube, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 80-120:2.4-3.6.
The high density polyethylene(HDPE) that the present invention selects and acrylonitrile-butadiene-styrene copolymer all have good rigidity and toughness, terpolymer EP rubber side chain contains carbon-carbon double bond, there is good erosion resistance, three cooperatively interacts, and can greatly increase shock resistance of the present invention, crack resistence and erosion resistance; Cetyl trimethylammonium bromide and polynite are reacted, cetyl trimethylammonium bromide can enter the interlayer of polynite, expand the interlamellar spacing of polynite and increase its dispersiveness in blend composition, the intercalation being conducive to polynite and blend composition is blended, modify with the surface of vinyltrimethoxy silane to polynite in addition, considerably increase the dispersed of polynite and blend composition, thus considerably increase toughness of the present invention and shock resistance; Carbon nanotube has high intensity and toughness, carry out surface with vinyltrimethoxy silane to carbon nanotube to modify, avoid the reunion of carbon nanotube, considerably increase carbon nanotube dispersed in blend composition, thus greatly increase toughness of the present invention and shock resistance; All containing carbon-carbon double bond in modified montmorillonoid, modified carbon nano-tube and blend composition, three can dispersed and mutually bonding, intert, greatly increase shock resistance of the present invention and toughness; Carbon black is filler, can increase shock resistance of the present invention; Cyclohexane dicarboxylic acid appoints ester, acetylricinoleate alkyd methyl esters is softening agent, can increase shock resistance of the present invention; Ammonium polyphosphate, zinc borate, red phosphorus are fire retardant; Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD cooperatively interacts can increase stability of the present invention, resistance to deterioration, erosion resistance; Polyethylene wax can improve the rheological of the present invention's processing, improves surface smoothness of the present invention; Ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ can make blend composition be cross-linked to form reticulated structure, and each material can be dispersed in cross-linked structure, thus greatly increase shock resistance of the present invention and toughness.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of gas pipeline shock resistance crack resistence material, its raw material comprises by weight: high density polyethylene(HDPE) 40 parts, terpolymer EP rubber 40 parts, acrylonitrile-butadiene-styrene copolymer 20 parts, carbon black 40 parts, modified montmorillonoid 1.8 parts, modified carbon nano-tube 0.13 part, cyclohexane dicarboxylic acid appoints ester 20 parts, acetylricinoleate alkyd methyl esters 30 parts, ammonium polyphosphate 15 parts, zinc borate 15 parts, 5 parts, red phosphorus, ditertiary butyl peroxide 3 parts, dimethylaminopropylamine 0.4 part, accelerant CZ 0.3 part, Ca/Zn one package stabilizer 2 parts, Zinic stearas 2 parts, 1 part, butanethiol tin, antioxidant D 1 part, anti-aging agent RD 0.3 part, polyethylene wax 3 parts,
Wherein, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 120 DEG C, obtain blend composition with the speed banburying 8min of 400r/min; Modified montmorillonoid, modified carbon nano-tube is added in blend composition, continue banburying 90min, add carbon black, cyclohexane dicarboxylic acid appoint ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 150 DEG C, with the speed banburying 20min of 600r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixing, continuation stirring 10min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material;
In the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, 90min is stirred with the speed of 200r/min, leave standstill swelling 25h, be warming up to 70 DEG C, drip the aqueous solution that massfraction is 3.5wt% cetyl trimethylammonium bromide, dropwise in 30min, with the speed insulated and stirred 6h of 200r/min, filter, wash with water, dry, pulverizing obtains intermediate material, and wherein, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 7:40; Intermediate material being added massfraction is in 2wt% vinyltrimethoxy silane ethanolic soln, be warming up to 40 DEG C, 30min is stirred with the speed of 350r/min, filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid, wherein, the weight ratio of intermediate material, vinyltrimethoxy silane is 6:0.4;
In the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 2wt% vinyltrimethoxy silane ethanolic soln, be warming up to 40 DEG C, ultrasonic 6h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube, wherein, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 80:3.6.
Embodiment 2
A kind of gas pipeline shock resistance crack resistence material, its raw material comprises by weight: high density polyethylene(HDPE) 60 parts, terpolymer EP rubber 30 parts, acrylonitrile-butadiene-styrene copolymer 30 parts, carbon black 30 parts, modified montmorillonoid 2.6 parts, modified carbon nano-tube 0.9 part, cyclohexane dicarboxylic acid appoints ester 30 parts, acetylricinoleate alkyd methyl esters 20 parts, ammonium polyphosphate 25 parts, zinc borate 10 parts, 8 parts, red phosphorus, ditertiary butyl peroxide 1 part, dimethylaminopropylamine 0.6 part, accelerant CZ 0.1 part, Ca/Zn one package stabilizer 4 parts, Zinic stearas 1 part, 2 parts, butanethiol tin, antioxidant D 0.5 part, anti-aging agent RD 0.5 part, polyethylene wax 1 part,
Wherein, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 140 DEG C, obtain blend composition with the speed banburying 12min of 200r/min; Modified montmorillonoid, modified carbon nano-tube is added in blend composition, continue banburying 60min, add carbon black, cyclohexane dicarboxylic acid appoint ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 170 DEG C, with the speed banburying 30min of 500r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixing, continuation stirring 6min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material;
In the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, 60min is stirred with the speed of 400r/min, leave standstill swelling 30h, be warming up to 50 DEG C, drip the aqueous solution that massfraction is 4.5wt% cetyl trimethylammonium bromide, dropwise in 30min, with the speed insulated and stirred 7h of 100r/min, filter, wash with water, dry, pulverizing obtains intermediate material, and wherein, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 5:60; Intermediate material being added massfraction is in 1wt% vinyltrimethoxy silane ethanolic soln, be warming up to 60 DEG C, 60min is stirred with the speed of 250r/min, filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid, wherein, the weight ratio of intermediate material, vinyltrimethoxy silane is 5:0.5;
In the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1wt% vinyltrimethoxy silane ethanolic soln, be warming up to 60 DEG C, ultrasonic 5h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube, wherein, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 120:2.4.
Embodiment 3
A kind of gas pipeline shock resistance crack resistence material, its raw material comprises by weight: high density polyethylene(HDPE) 45 parts, terpolymer EP rubber 38 parts, acrylonitrile-butadiene-styrene copolymer 23 parts, carbon black 38 parts, modified montmorillonoid 2 parts, modified carbon nano-tube 0.12 part, cyclohexane dicarboxylic acid appoints ester 22 parts, acetylricinoleate alkyd methyl esters 28 parts, ammonium polyphosphate 17 parts, zinc borate 13 parts, 6 parts, red phosphorus, ditertiary butyl peroxide 2.5 parts, dimethylaminopropylamine 0.45 part, accelerant CZ 0.25 part, Ca/Zn one package stabilizer 2.5 parts, Zinic stearas 1.8 parts, 1.3 parts, butanethiol tin, antioxidant D 0.8 part, anti-aging agent RD 0.35 part, polyethylene wax 2.5 parts,
Wherein, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 125 DEG C, obtain blend composition with the speed banburying 9min of 350r/min; Modified montmorillonoid, modified carbon nano-tube is added in blend composition, continue banburying 80min, add carbon black, cyclohexane dicarboxylic acid appoint ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 155 DEG C, with the speed banburying 23min of 580r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixing, continuation stirring 9min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material;
In the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, 80min is stirred with the speed of 250r/min, leave standstill swelling 26h, be warming up to 65 DEG C, drip the aqueous solution that massfraction is 3.7wt% cetyl trimethylammonium bromide, dropwise in 30min, with the speed insulated and stirred 6.2h of 170r/min, filter, wash with water, dry, pulverizing obtains intermediate material, and wherein, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 6.5:45; Intermediate material being added massfraction is in 1.8wt% vinyltrimethoxy silane ethanolic soln, be warming up to 45 DEG C, 40min is stirred with the speed of 320r/min, filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid, wherein, the weight ratio of intermediate material, vinyltrimethoxy silane is 5.8:0.42;
In the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1.8wt% vinyltrimethoxy silane ethanolic soln, be warming up to 45 DEG C, ultrasonic 5.7h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube, wherein, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 90:3.2.
Embodiment 4
A kind of gas pipeline shock resistance crack resistence material, its raw material comprises by weight: high density polyethylene(HDPE) 55 parts, terpolymer EP rubber 32 parts, acrylonitrile-butadiene-styrene copolymer 27 parts, carbon black 32 parts, modified montmorillonoid 2.4 parts, modified carbon nano-tube 0.1 part, cyclohexane dicarboxylic acid appoints ester 28 parts, acetylricinoleate alkyd methyl esters 22 parts, ammonium polyphosphate 23 parts, zinc borate 11 parts, 7 parts, red phosphorus, ditertiary butyl peroxide 1.5 parts, dimethylaminopropylamine 0.55 part, accelerant CZ 0.15 part, Ca/Zn one package stabilizer 3.5 parts, Zinic stearas 1.2 parts, 1.7 parts, butanethiol tin, antioxidant D 0.6 part, anti-aging agent RD 0.45 part, polyethylene wax 1.5 parts,
Wherein, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 135 DEG C, obtain blend composition with the speed banburying 11min of 250r/min; Modified montmorillonoid, modified carbon nano-tube is added in blend composition, continue banburying 70min, add carbon black, cyclohexane dicarboxylic acid appoint ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 165 DEG C, with the speed banburying 27min of 520r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixing, continuation stirring 7min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material;
In the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, 70min is stirred with the speed of 350r/min, leave standstill swelling 28h, be warming up to 55 DEG C, drip the aqueous solution that massfraction is 4.3wt% cetyl trimethylammonium bromide, dropwise in 30min, with the speed insulated and stirred 6.8h of 130r/min, filter, wash with water, dry, pulverizing obtains intermediate material, and wherein, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 5.5:55; Intermediate material being added massfraction is in 1.2wt% vinyltrimethoxy silane ethanolic soln, be warming up to 55 DEG C, 50min is stirred with the speed of 280r/min, filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid, wherein, the weight ratio of intermediate material, vinyltrimethoxy silane is 5.2:0.48;
In the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1.2wt% vinyltrimethoxy silane ethanolic soln, be warming up to 55 DEG C, ultrasonic 5.3h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube, wherein, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 110:2.8.
Embodiment 5
A kind of gas pipeline shock resistance crack resistence material, its raw material comprises by weight: high density polyethylene(HDPE) 50 parts, terpolymer EP rubber 35 parts, acrylonitrile-butadiene-styrene copolymer 25 parts, carbon black 35 parts, modified montmorillonoid 2.2 parts, modified carbon nano-tube 0.11 part, cyclohexane dicarboxylic acid appoints ester 25 parts, acetylricinoleate alkyd methyl esters 25 parts, ammonium polyphosphate 20 parts, zinc borate 12 parts, 6.5 parts, red phosphorus, ditertiary butyl peroxide 2 parts, dimethylaminopropylamine 0.5 part, accelerant CZ 0.2 part, Ca/Zn one package stabilizer 3 parts, Zinic stearas 1.5 parts, 1.5 parts, butanethiol tin, antioxidant D 0.7 part, anti-aging agent RD 0.4 part, polyethylene wax 2 parts,
Wherein, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 130 DEG C, obtain blend composition with the speed banburying 10min of 300r/min; Modified montmorillonoid, modified carbon nano-tube is added in blend composition, continue banburying 85min, add carbon black, cyclohexane dicarboxylic acid appoint ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 160 DEG C, with the speed banburying 25min of 550r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixing, continuation stirring 8min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material;
In the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, 75min is stirred with the speed of 300r/min, leave standstill swelling 27h, be warming up to 60 DEG C, drip the aqueous solution that massfraction is 4wt% cetyl trimethylammonium bromide, dropwise in 30min, with the speed insulated and stirred 6.5h of 150r/min, filter, wash with water, dry, pulverizing obtains intermediate material, and wherein, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 5.5:50; Intermediate material being added massfraction is in 1.5wt% vinyltrimethoxy silane ethanolic soln, be warming up to 50 DEG C, 55min is stirred with the speed of 300r/min, filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid, wherein, the weight ratio of intermediate material, vinyltrimethoxy silane is 5.5:0.45;
In the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1.5wt% vinyltrimethoxy silane ethanolic soln, be warming up to 50 DEG C, ultrasonic 5.5h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube, wherein, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 100:3.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a gas pipeline shock resistance crack resistence material, it is characterized in that, its raw material comprises by weight: high density polyethylene(HDPE) 40-60 part, terpolymer EP rubber 30-40 part, acrylonitrile-butadiene-styrene copolymer 20-30 part, carbon black 30-40 part, modified montmorillonoid 1.8-2.6 part, modified carbon nano-tube 0.9-0.13 part, cyclohexane dicarboxylic acid appoints ester 20-30 part, acetylricinoleate alkyd methyl esters 20-30 part, ammonium polyphosphate 15-25 part, zinc borate 10-15 part, red phosphorus 5-8 part, ditertiary butyl peroxide 1-3 part, dimethylaminopropylamine 0.4-0.6 part, accelerant CZ 0.1-0.3 part, Ca/Zn one package stabilizer 2-4 part, Zinic stearas 1-2 part, butanethiol tin 1-2 part, antioxidant D 0.5-1 part, anti-aging agent RD 0.3-0.5 part, polyethylene wax 1-3 part,
Wherein, modified montmorillonoid is that sodium-based montmorillonite obtains through cetyl trimethylammonium bromide, vinyltrimethoxy silane modification;
Modified carbon nano-tube is that carboxylic carbon nano-tube obtains through vinyltrimethoxy silane modification.
2. gas pipeline shock resistance crack resistence material according to claim 1, it is characterized in that, its raw material comprises by weight: high density polyethylene(HDPE) 45-55 part, terpolymer EP rubber 32-38 part, acrylonitrile-butadiene-styrene copolymer 23-27 part, carbon black 32-38 part, modified montmorillonoid 2-2.4 part, modified carbon nano-tube 0.1-0.12 part, cyclohexane dicarboxylic acid appoints ester 22-28 part, acetylricinoleate alkyd methyl esters 22-28 part, ammonium polyphosphate 17-23 part, zinc borate 11-13 part, red phosphorus 6-7 part, ditertiary butyl peroxide 1.5-2.5 part, dimethylaminopropylamine 0.45-0.55 part, accelerant CZ 0.15-0.25 part, Ca/Zn one package stabilizer 2.5-3.5 part, Zinic stearas 1.2-1.8 part, butanethiol tin 1.3-1.7 part, antioxidant D 0.6-0.8 part, anti-aging agent RD 0.35-0.45 part, polyethylene wax 1.5-2.5 part.
3. gas pipeline shock resistance crack resistence material according to claim 1 or 2, it is characterized in that, in the preparation process of gas pipeline with shock resistance crack resistence material, get high density polyethylene(HDPE), terpolymer EP rubber, acrylonitrile-butadiene-styrene copolymer, be warming up to 120-140 DEG C, obtain blend composition with the speed banburying 8-12min of 200-400r/min, modified montmorillonoid is added in blend composition, modified carbon nano-tube, continue banburying 60-90min, add carbon black, cyclohexane dicarboxylic acid appoints ester, acetylricinoleate alkyd methyl esters, ammonium polyphosphate, zinc borate, red phosphorus, Ca/Zn one package stabilizer, Zinic stearas, butanethiol tin, antioxidant D, anti-aging agent RD, polyethylene wax, be warming up to 150-170 DEG C, with the speed banburying 20-30min of 500-600r/min, add ditertiary butyl peroxide, dimethylaminopropylamine, accelerant CZ mixes, continuation stirring 6-10min extrudes through twin screw extruder and obtains gas pipeline shock resistance crack resistence material.
4. gas pipeline shock resistance crack resistence material according to any one of claim 1-3, is characterized in that, in the preparation process of modified montmorillonoid, sodium-based montmorillonite is added to the water, stir 60-90min with the speed of 200-400r/min, leave standstill swelling 25-30h, be warming up to 50-70 DEG C, drip the aqueous solution that massfraction is 3.5-4.5wt% cetyl trimethylammonium bromide, with the speed insulated and stirred 6-7h of 100-200r/min, filter, wash with water, dry, pulverize and obtain intermediate material; Intermediate material being added massfraction is in 1-2wt% vinyltrimethoxy silane ethanolic soln, is warming up to 40-60 DEG C, stirs 30-60min with the speed of 250-350r/min, and filter, washing with alcohol, dry, pulverize and obtain modified montmorillonoid.
5. gas pipeline shock resistance crack resistence material according to any one of claim 1-4, it is characterized in that, in the preparation process of modified carbon nano-tube, carboxylic carbon nano-tube being added massfraction is in 1-2wt% vinyltrimethoxy silane ethanolic soln, be warming up to 40-60 DEG C, ultrasonic 5-6h, suction filtration, washing with alcohol, drying obtains modified carbon nano-tube.
6. gas pipeline shock resistance crack resistence material according to claim 4, it is characterized in that, in the preparation process of modified montmorillonoid, the aqueous solution of cetyl trimethylammonium bromide dropwises in 30min.
7. gas pipeline shock resistance crack resistence material according to claim 4, it is characterized in that, in the preparation process of modified montmorillonoid, the bulking value (g/ml) of the aqueous solution of sodium-based montmorillonite, cetyl trimethylammonium bromide is than being 5-7:40-60.
8. gas pipeline shock resistance crack resistence material according to claim 4, it is characterized in that, in the preparation process of modified montmorillonoid, the weight ratio of intermediate material, vinyltrimethoxy silane is 5-6:0.4-0.5.
9. gas pipeline shock resistance crack resistence material according to claim 5, it is characterized in that, in the preparation process of modified carbon nano-tube, the weight ratio of carboxylic carbon nano-tube and vinyltrimethoxy silane is 80-120:2.4-3.6.
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Application publication date: 20160330 |