CN109929237A - A kind of air-tightness polyurethane material and lining pipe for repairing pipelines - Google Patents
A kind of air-tightness polyurethane material and lining pipe for repairing pipelines Download PDFInfo
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- CN109929237A CN109929237A CN201910203839.8A CN201910203839A CN109929237A CN 109929237 A CN109929237 A CN 109929237A CN 201910203839 A CN201910203839 A CN 201910203839A CN 109929237 A CN109929237 A CN 109929237A
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Abstract
The invention discloses a kind of air-tightness polyurethane materials, including polyurethane, montmorillonite, carbon black, in-lubricant, heat stabilizer, coupling agent and toughener, the mass ratio of each component is 70~80:15~30:5~10:0.5~1.5:0.5~1:3~5:0.5~1.5 technical solution, and the present invention can be used for the internal lining pipe of pipe-repairing.
Description
Technical field
The present invention relates to Material Fields, and in particular to a kind of air-tightness polyurethane material and lining pipe for repairing pipelines.
Background technique
The municipal pipelines such as subsoil drain, blow-off line, gas pipeline (abbreviation pipeline) are must can not in people's life
Few infrastructure.Ground is insecure, due to corrosive pipeline etc., municipal pipeline just will appear too long using the time aging,
The damage such as burn into crack and collapsing phenomenon brings adverse effect to normal production and life, needs in time to tie up it
It repairs.Repair the technology of pipeline generally speaking there are two types of: one is the road surface for excavating breakage, applied to repairing is carried out at Pipeline damage
Work.Another kind is that pipe-repairing is arranged in broken pipe to repair pipeline；
Former repair mode needs to excavate stretch face, thus can be to traffic, environment, neighboring buildings basis and resident
Normal life and work order cause damage and adverse effect；
Latter approach is then small and easy to implement on various aspects influence, expense is low, is preferable restorative procedure, but should
Requirement of the mode to the pipeline of reparation is also very high, when being especially used in reparation gas pipeline, needs to guarantee enough gas
Close property.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of air-tightness polyurethane material and lining pipe for repairing pipelines,
Have the characteristics that air-tightness is good.
In order to solve the above-mentioned technical problem, The technical solution adopted by the invention is as follows: a kind of air-tightness polyurethane material, packet
Polyurethane, montmorillonite, carbon black, in-lubricant, heat stabilizer, coupling agent and toughener are included, the mass ratio of each component is 70~80:
15~30:5~10:0.5~1.5:0.5~1:3~5:0.5~1.5.
Further, it is preferable that the polyurethane is polyether polyurethane, and hardness is 75~90A.
Preferably, the montmorillonite be silane-modified montmorillonite, mesh number be 5000~10000 mesh, the carbon black it is microcosmic
Pattern is spherical shape, and mesh number is 2000~5000 mesh.
Preferably, the in-lubricant is long-chain polyfunctional group ester, and the heat stabilizer is organic tin heat stabilizer.
It preferably, further include mass ratio for 0.5~1.5 external lubricant, the external lubricant includes that mass ratio is 1:1
Polyethylene wax and calcium stearate.
It preferably, further include mass ratio for 0.5~1.5 antioxidant, the antioxidant that the antioxidant is 1:1 by mass ratio
1010 and irgasfos 168 composition.
Preferably, the toughener is SEBS.
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in polyurethane；
(2) under 40~80 DEG C, high revolving speed, heat stabilizer and polyethylene wax is added；
(3) under 60~90 DEG C, high revolving speed, coupling agent, antioxidant and calcium stearate is added；
(4) under 80~120 DEG C, high revolving speed, in-lubricant is added；
(5) under 90~130 DEG C, high revolving speed, montmorillonite, carbon black and toughener is added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving.
A kind of lining pipe for repairing pipelines, including PET fiber layer, the ectonexine of the PET fiber layer pass through coating institute
It states air-tightness polyurethane material and forms air-tightness layer of polyurethane.
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；It (2) will be such as claim 11
The internal lining pipe is filled in the pipeline to be repaired from one opening and is pulled out from another described opening；(3) it blocks described
The Single port of internal lining pipe, being blown into compressed air from another port makes the internal lining pipe closely be attached to the pipeline to be repaired completely
Inner wall on.
Beneficial effects of the present invention: the present invention, which has, is able to maintain lower hardness, so that the long range for meeting pipeline is received
Volume, while obstructing that gas effectiveness is good, and cold tolerance is good, cost performance is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of internal lining pipe of the invention；
Fig. 2 is the U-shaped schematic diagram of internal lining pipe of the invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment one:
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in 6260 parts of polyurethane；
(2) under 40~80 DEG C, high revolving speed, 45 parts of heat stabilizers are added；
(3) under 60~90 DEG C, high revolving speed, 447 parts of coupling agents are added；
(4) under 80~120 DEG C, high revolving speed, 45 parts of in-lubricants are added；
(5) under 90~130 DEG C, high revolving speed, 2711 parts of montmorillonites, 447 parts of carbon blacks and 45 parts of toughener are added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving；
Wherein, the slow-speed of revolution is 0~200r/min, and the high revolving speed is 200~2000r/min.
The polyurethane is polyether polyurethane, and hardness is 75~90A, and above-mentioned each nothing is added in the polyurethane under the hardness
Composite material after machine filler is also able to maintain lower hardness, can satisfy the flat winding of long range tubing；Described cover takes off
Soil is silane-modified montmorillonite, and mesh number is 5000~10000 mesh, and silane-modified montmorillonite can be improved organic phase and inorganic phase
Compatibility, can preferably be scattered in organic phase, the lamellar structure of montmorillonite is dispersed in organic phase, plays
The effect of preferable barrier gas；The microscopic appearance of the carbon black is spherical shape, spherical large specific surface area, with connecing for other materials
Contacting surface is also big, to enhance air-tightness, mesh number is 2000~5000 mesh；The in-lubricant is long-chain polyfunctional group ester, phase
More commonly used paraffin, stearic acid, calcium stearate etc. are not in have very high cost performance the problems such as spitting frost；The thermostabilization
Agent is organic tin heat stabilizer；The toughener is SEBS (hydrogenated styrene-butadiene block copolymer), cold tolerance
It is good；The coupling agent is silane coupling agent, improves the compatibility of organic phase and inorganic phase；Further include in air-tightness polyurethane material
Color masterbatch for toning；
The air-tightness polyurethane and common 80A polyurethane for taking three groups of different-thickness carry out gas permeability test:
(1) testing standard: GB/T 1038-2000；
(2) test condition: 40 DEG C of test temperature, test gas is methane；
(3) sample size: totally 2 groups, every group 3；
(4) test equipment: pressure differential gas permeameter VAC-V2；
Test result is as follows:
By above table it is found that the air-tightness of air-tightness polyurethane is much better than common 80A polyurethane.
As shown in Figure 1, a kind of lining pipe for repairing pipelines 100, including PET fiber layer 10, the PET fiber layer 10 it is interior
Outer layer passes through the coating air-tightness polyurethane material and forms air-tightness layer of polyurethane 20, which passes through
Each component is mixed, is granulated, obtained particle coating is squeezed out to be formed in the ectonexine of PET fiber layer 10, while needing to pay attention to
When being using mixing machine mixing each component, the feeding quantity of mixing machine is controlled the 50%~70% of mixing chamber sky volume, the liner
The service life of pipe 100 is 40 years；
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；(2) by the internal lining pipe
100 fill in the pipeline to be repaired from one opening and pull out from another described opening, as shown in Fig. 2, internal lining pipe 100
It U-shaped is connect on rolling frame, while by being pressed into U-shaped can reduce with pipeline to be repaired in flattening winding by being pressed into advance
Contacting surface product, facilitates dragging, carries out traction to internal lining pipe 100 by dragger to pass through pipeline to be repaired；(3) it blocks in described
The Single port of bushing pipe 100, the further Single port that internal lining pipe 100 is blocked using air bag, is blown into compressed air from another port
It is attached to the internal lining pipe 100 closely on the inner wall of the pipeline to be repaired completely, cuts away redundance later, repaired
At；Two openings originally excavated in step (1) are then attached by welding or connecting new pipeline.
Embodiment two:
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in 6400 parts of polyurethane；
(2) under 40~80 DEG C, high revolving speed, 55 parts of heat stabilizers and 22.5 parts of polyethylene waxes are added；
(3) 490 parts of coupling agents, 45 parts of antioxidant and 22.5 parts of calcium stearates are added under 60~90 DEG C, high revolving speed, 45
Part antioxidant is made of the antioxidant 1010 that mass ratio is 1:1 and irgasfos 168；
(4) under 80~120 DEG C, high revolving speed, 65 parts of in-lubricants are added；
(5) under 90~130 DEG C, high revolving speed, 2360 parts of montmorillonites, 560 parts of carbon blacks and 70 parts of toughener are added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving；
Wherein, the slow-speed of revolution is 0~200r/min, and the high revolving speed is 200~2000r/min.
The polyurethane is polyether polyurethane, and hardness is 75~90A, and above-mentioned each nothing is added in the polyurethane under the hardness
Composite material after machine filler is also able to maintain lower hardness, can satisfy the flat winding of long range tubing；Described cover takes off
Soil is silane-modified montmorillonite, and mesh number is 5000~10000 mesh, and silane-modified montmorillonite can be improved organic phase and inorganic phase
Compatibility, can preferably be scattered in organic phase, the lamellar structure of montmorillonite is dispersed in organic phase, plays
The effect of preferable barrier gas；The microscopic appearance of the carbon black is spherical shape, spherical large specific surface area, with connecing for other materials
Contacting surface is also big, to enhance air-tightness, mesh number is 2000~5000 mesh；The in-lubricant is long-chain polyfunctional group ester, phase
More commonly used paraffin, stearic acid, calcium stearate etc. are not in have very high cost performance the problems such as spitting frost；The thermostabilization
Agent is organic tin heat stabilizer；The toughener is SEBS (hydrogenated styrene-butadiene block copolymer), cold tolerance
It is good；The coupling agent is silane coupling agent, improves the compatibility of organic phase and inorganic phase；Further include in air-tightness polyurethane material
Color masterbatch for toning.
The air-tightness polyurethane and common 80A polyurethane for taking three groups of different-thickness carry out gas permeability test:
(1) testing standard: GB/T 1038-2000；
(2) test condition: 40 DEG C of test temperature, test gas is methane；
(3) sample size: totally 2 groups, every group 3；
(4) test equipment: pressure differential gas permeameter VAC-V2；
Test result is as follows:
By above table it is found that the air-tightness of air-tightness polyurethane is much better than common 80A polyurethane.
As shown in Figure 1, a kind of lining pipe for repairing pipelines 100, including PET fiber layer 10, the PET fiber layer 10 it is interior
Outer layer passes through the coating air-tightness polyurethane material and forms air-tightness layer of polyurethane 20, which passes through
Each component is mixed, is granulated, obtained particle coating is squeezed out to be formed in the ectonexine of PET fiber layer 10, while needing to pay attention to
When being using mixing machine mixing each component, the feeding quantity of mixing machine is controlled the 50%~70% of mixing chamber sky volume, the liner
The service life of pipe 100 is 45 years；
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；(2) by the internal lining pipe
100 fill in the pipeline to be repaired from one opening and pull out from another described opening, as shown in Fig. 2, internal lining pipe 100
It U-shaped is connect on rolling frame, while by being pressed into U-shaped can reduce with pipeline to be repaired in flattening winding by being pressed into advance
Contacting surface product, facilitates dragging, carries out traction to internal lining pipe 100 by dragger to pass through pipeline to be repaired；(3) it blocks in described
The Single port of bushing pipe 100, the further Single port that internal lining pipe 100 is blocked using air bag, is blown into compressed air from another port
It is attached to the internal lining pipe 100 closely on the inner wall of the pipeline to be repaired completely, cuts away redundance later, repaired
At；Two openings originally excavated in step (1) are then attached by welding or connecting new pipeline.
Embodiment three:
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in 6700 parts of polyurethane；
(2) under 40~80 DEG C, high revolving speed, 67 parts of heat stabilizers and 43.5 parts of polyethylene waxes are added；
(3) under 60~90 DEG C, high revolving speed, it is hard that 357 parts of coupling agents, 87 parts of antioxidant and 43.5 parts are added
Resin acid calcium, 87 parts of antioxidant are made of the antioxidant 1010 that mass ratio is 1:1 and irgasfos 168；
(4) under 80~120 DEG C, high revolving speed, 87 parts of in-lubricants are added；
(5) under 90~130 DEG C, high revolving speed, 2020 parts of montmorillonites, 670 parts of carbon blacks and 99 parts of toughener are added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving；
Wherein, the slow-speed of revolution is 0~200r/min, and the high revolving speed is 200~2000r/min.
The polyurethane is polyether polyurethane, and hardness is 75~90A, and above-mentioned each nothing is added in the polyurethane under the hardness
Composite material after machine filler is also able to maintain lower hardness, can satisfy the flat winding of long range tubing；Described cover takes off
Soil is silane-modified montmorillonite, and mesh number is 5000~10000 mesh, and silane-modified montmorillonite can be improved organic phase and inorganic phase
Compatibility, can preferably be scattered in organic phase, the lamellar structure of montmorillonite is dispersed in organic phase, plays
The effect of preferable barrier gas；The microscopic appearance of the carbon black is spherical shape, spherical large specific surface area, with connecing for other materials
Contacting surface is also big, to enhance air-tightness, mesh number is 2000~5000 mesh；The in-lubricant is long-chain polyfunctional group ester, phase
More commonly used paraffin, stearic acid, calcium stearate etc. are not in have very high cost performance the problems such as spitting frost；The thermostabilization
Agent is organic tin heat stabilizer；The toughener is SEBS (hydrogenated styrene-butadiene block copolymer), cold tolerance
It is good；The coupling agent is silane coupling agent, improves the compatibility of organic phase and inorganic phase；Further include in air-tightness polyurethane material
Color masterbatch for toning.
The air-tightness polyurethane and common 80A polyurethane for taking three groups of different-thickness carry out gas permeability test:
(1) testing standard: GB/T 1038-2000；
(2) test condition: 40 DEG C of test temperature, test gas is methane；
(3) sample size: totally 2 groups, every group 3；
(4) test equipment: pressure differential gas permeameter VAC-V2；
Test result is as follows:
By above table it is found that the air-tightness of air-tightness polyurethane is much better than common 80A polyurethane.
As shown in Figure 1, a kind of lining pipe for repairing pipelines 100, including PET fiber layer 10, the PET fiber layer 10 it is interior
Outer layer passes through the coating air-tightness polyurethane material and forms air-tightness layer of polyurethane 20, which passes through
Each component is mixed, is granulated, obtained particle coating is squeezed out to be formed in the ectonexine of PET fiber layer 10, while needing to pay attention to
When being using mixing machine mixing each component, the feeding quantity of mixing machine is controlled the 50%~70% of mixing chamber sky volume, the liner
The service life of pipe 100 is 50 years；
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；(2) by the internal lining pipe
100 fill in the pipeline to be repaired from one opening and pull out from another described opening, as shown in Fig. 2, internal lining pipe 100
It U-shaped is connect on rolling frame, while by being pressed into U-shaped can reduce with pipeline to be repaired in flattening winding by being pressed into advance
Contacting surface product, facilitates dragging, carries out traction to internal lining pipe 100 by dragger to pass through pipeline to be repaired；(3) it blocks in described
The Single port of bushing pipe 100, the further Single port that internal lining pipe 100 is blocked using air bag, is blown into compressed air from another port
It is attached to the internal lining pipe 100 closely on the inner wall of the pipeline to be repaired completely, cuts away redundance later, repaired
At；Two openings originally excavated in step (1) are then attached by welding or connecting new pipeline.
Example IV:
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in 6930 parts of polyurethane；
(2) under 40~80 DEG C, high revolving speed, 75 parts of heat stabilizers and 65 parts of polyethylene waxes are added；
(3) 310 parts of coupling agents, 130 parts of antioxidant and 65 parts of calcium stearates are added under 60~90 DEG C, high revolving speed, 130
Part antioxidant is made of the antioxidant 1010 that mass ratio is 1:1 and irgasfos 168；
(4) under 80~120 DEG C, high revolving speed, 115 parts of in-lubricants are added；
(5) under 90~130 DEG C, high revolving speed, 1675 parts of montmorillonites, 780 parts of carbon blacks and 115 parts of toughener are added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving；
Wherein, the slow-speed of revolution is 0~200r/min, and the high revolving speed is 200~2000r/min.
The polyurethane is polyether polyurethane, and hardness is 75~90A, and above-mentioned each nothing is added in the polyurethane under the hardness
Composite material after machine filler is also able to maintain lower hardness, can satisfy the flat winding of long range tubing；Described cover takes off
Soil is silane-modified montmorillonite, and mesh number is 5000~10000 mesh, and silane-modified montmorillonite can be improved organic phase and inorganic phase
Compatibility, can preferably be scattered in organic phase, the lamellar structure of montmorillonite is dispersed in organic phase, plays
The effect of preferable barrier gas；The microscopic appearance of the carbon black is spherical shape, spherical large specific surface area, with connecing for other materials
Contacting surface is also big, to enhance air-tightness, mesh number is 2000~5000 mesh；The in-lubricant is long-chain polyfunctional group ester, phase
More commonly used paraffin, stearic acid, calcium stearate etc. are not in have very high cost performance the problems such as spitting frost；The thermostabilization
Agent is organic tin heat stabilizer；The toughener is SEBS (hydrogenated styrene-butadiene block copolymer), cold tolerance
It is good；The coupling agent is silane coupling agent, improves the compatibility of organic phase and inorganic phase；Further include in air-tightness polyurethane material
Color masterbatch for toning.
The air-tightness polyurethane and common 80A polyurethane for taking three groups of different-thickness carry out gas permeability test:
(1) testing standard: GB/T 1038-2000；
(2) test condition: 40 DEG C of test temperature, test gas is methane；
(3) sample size: totally 2 groups, every group 3；
(4) test equipment: pressure differential gas permeameter VAC-V2；
Test result is as follows:
By above table it is found that the air-tightness of air-tightness polyurethane is much better than common 80A polyurethane.
As shown in Figure 1, a kind of lining pipe for repairing pipelines 100, including PET fiber layer 10, the PET fiber layer 10 it is interior
Outer layer passes through the coating air-tightness polyurethane material and forms air-tightness layer of polyurethane 20, which passes through
Each component is mixed, is granulated, obtained particle coating is squeezed out to be formed in the ectonexine of PET fiber layer 10, while needing to pay attention to
When being using mixing machine mixing each component, the feeding quantity of mixing machine is controlled the 50%~70% of mixing chamber sky volume, the liner
The service life of pipe 100 is 45 years；
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；(2) by the internal lining pipe
100 fill in the pipeline to be repaired from one opening and pull out from another described opening, as shown in Fig. 2, internal lining pipe 100
It U-shaped is connect on rolling frame, while by being pressed into U-shaped can reduce with pipeline to be repaired in flattening winding by being pressed into advance
Contacting surface product, facilitates dragging, carries out traction to internal lining pipe 100 by dragger to pass through pipeline to be repaired；(3) it blocks in described
The Single port of bushing pipe 100, the further Single port that internal lining pipe 100 is blocked using air bag, is blown into compressed air from another port
It is attached to the internal lining pipe 100 closely on the inner wall of the pipeline to be repaired completely, cuts away redundance later, repaired
At；Two openings originally excavated in step (1) are then attached by welding or connecting new pipeline.
Embodiment five:
A kind of air-tightness polyurethane material preparation method, the sequence to feed in mixing chamber mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in 7159 parts of polyurethane；
(2) under 40~80 DEG C, high revolving speed, 45 parts of heat stabilizers are added；
(3) under 60~90 DEG C, high revolving speed, 268 parts of coupling agents are added；
(4) under 80~120 DEG C, high revolving speed, 130 parts of in-lubricants are added；
(5) under 90~130 DEG C, high revolving speed, 1330 parts of montmorillonites, 894 parts of carbon blacks and 130 parts of toughener are added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving；
Wherein, the slow-speed of revolution is 0~200r/min, and the high revolving speed is 200~2000r/min.
The polyurethane is polyether polyurethane, and hardness is 75~90A, and above-mentioned each nothing is added in the polyurethane under the hardness
Composite material after machine filler is also able to maintain lower hardness, can satisfy the flat winding of long range tubing；Described cover takes off
Soil is silane-modified montmorillonite, and mesh number is 5000~10000 mesh, and silane-modified montmorillonite can be improved organic phase and inorganic phase
Compatibility, can preferably be scattered in organic phase, the lamellar structure of montmorillonite is dispersed in organic phase, plays
The effect of preferable barrier gas；The microscopic appearance of the carbon black is spherical shape, spherical large specific surface area, with connecing for other materials
Contacting surface is also big, to enhance air-tightness, mesh number is 2000~5000 mesh；The in-lubricant is long-chain polyfunctional group ester, phase
More commonly used paraffin, stearic acid, calcium stearate etc. are not in have very high cost performance the problems such as spitting frost；The thermostabilization
Agent is organic tin heat stabilizer；The toughener is SEBS (hydrogenated styrene-butadiene block copolymer), cold tolerance
It is good；The coupling agent is silane coupling agent, improves the compatibility of organic phase and inorganic phase；Further include in air-tightness polyurethane material
Color masterbatch for toning.
The air-tightness polyurethane and common 80A polyurethane for taking three groups of different-thickness carry out gas permeability test:
(1) testing standard: GB/T 1038-2000；
(2) test condition: 40 DEG C of test temperature, test gas is methane；
(3) sample size: totally 2 groups, every group 3；
(4) test equipment: pressure differential gas permeameter VAC-V2；
Test result is as follows:
By above table it is found that the air-tightness of air-tightness polyurethane is much better than common 80A polyurethane.
As shown in Figure 1, a kind of lining pipe for repairing pipelines 100, including PET fiber layer 10, the PET fiber layer 10 it is interior
Outer layer passes through the coating air-tightness polyurethane material and forms air-tightness layer of polyurethane 20, which passes through
Each component is mixed, is granulated, obtained particle coating is squeezed out to be formed in the ectonexine of PET fiber layer 10, while needing to pay attention to
When being using mixing machine mixing each component, the feeding quantity of mixing machine is controlled the 50%~70% of mixing chamber sky volume, the liner
The service life of pipe 100 is 40 years；
A kind of pipe repairing method, comprising: (1) two openings are opened up on pipeline to be repaired；(2) by the internal lining pipe
100 fill in the pipeline to be repaired from one opening and pull out from another described opening, as shown in Fig. 2, internal lining pipe 100
It U-shaped is connect on rolling frame, while by being pressed into U-shaped can reduce with pipeline to be repaired in flattening winding by being pressed into advance
Contacting surface product, facilitates dragging, carries out traction to internal lining pipe 100 by dragger to pass through pipeline to be repaired；(3) it blocks in described
The Single port of bushing pipe 100, the further Single port that internal lining pipe 100 is blocked using air bag, is blown into compressed air from another port
It is attached to the internal lining pipe 100 closely on the inner wall of the pipeline to be repaired completely, cuts away redundance later, repaired
At；Two openings originally excavated in step (1) are then attached by welding or connecting new pipeline.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of air-tightness polyurethane material, it is characterised in that: including polyurethane, montmorillonite, carbon black, in-lubricant, thermostabilization
The mass ratio of agent, coupling agent and toughener, each component is 70~80:15~30:5~10:0.5~1.5:0.5~1:3~5:
0.5~1.5.
2. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that the polyurethane is the poly- ammonia of polyether-type
Ester, hardness are 75~90A.
3. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that the montmorillonite is silane-modified illiteracy
De- soil, mesh number are 5000~10000 mesh, and the microscopic appearance of the carbon black is spherical shape, and mesh number is 2000~5000 mesh.
4. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that the in-lubricant is the more officials of long-chain
Ester can be rolled into a ball, the heat stabilizer is organic tin heat stabilizer.
5. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that further include mass ratio be 0.5~1.5
External lubricant, the external lubricant include mass ratio be 1:1 polyethylene wax and calcium stearate.
6. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that further include mass ratio be 0.5~1.5
Antioxidant, the antioxidant by mass ratio be 1:1 antioxidant 1010 and irgasfos 168 form.
7. a kind of air-tightness polyurethane material as described in claim 1, which is characterized in that the toughener is SEBS.
8. a kind of air-tightness polyurethane material preparation method as described in claim 1~7 any one, which is characterized in that
The sequence that mixing chamber feeds when mixing are as follows:
(1) at the low rotational speed, mixing chamber is added in polyurethane；
(2) under 40~80 DEG C, high revolving speed, heat stabilizer and polyethylene wax is added；
(3) under 60~90 DEG C, high revolving speed, coupling agent, antioxidant and calcium stearate is added；
(4) under 80~120 DEG C, high revolving speed, in-lubricant is added；
(5) under 90~130 DEG C, high revolving speed, montmorillonite, carbon black and toughener is added；
(6) at 110 DEG C~120 DEG C, material is discharged under the slow-speed of revolution, is sent into cold mixer；
(7) cold mix to material temperature is 50 DEG C hereinafter, discharge, sieving.
9. a kind of lining pipe for repairing pipelines, which is characterized in that including PET fiber layer, the ectonexine of the PET fiber layer is logical
It crosses coating air-tightness polyurethane material as made of claim 10 and forms air-tightness layer of polyurethane.
10. a kind of pipe repairing method characterized by comprising (1) open up two openings on pipeline to be repaired；It (2) will be as
Internal lining pipe described in claim 11 is filled in the pipeline to be repaired from one opening and is pulled out from another described opening；
(3) Single port for blocking the internal lining pipe, being blown into compressed air from another port makes the internal lining pipe closely be attached to institute completely
On the inner wall for stating pipeline to be repaired.
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Application publication date: 20190625 |