CN101158423A - Silicone hydride crosslinked polypropylene pipe - Google Patents
Silicone hydride crosslinked polypropylene pipe Download PDFInfo
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- CN101158423A CN101158423A CNA2007101334885A CN200710133488A CN101158423A CN 101158423 A CN101158423 A CN 101158423A CN A2007101334885 A CNA2007101334885 A CN A2007101334885A CN 200710133488 A CN200710133488 A CN 200710133488A CN 101158423 A CN101158423 A CN 101158423A
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- silicone hydride
- crosslinked polypropylene
- polypropylene pipe
- pipe according
- hydride crosslinked
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Abstract
The invention discloses a silane crosslinking polypropylene tube which is made of raw materials such as polypropylene, ethylene-vinyl acetate copolymer, unsaturated silane, crosslinker, radical initiator, catalyst, antioxidant and lubricant, etc. The silane crosslinking polypropylene tube not only can be repaired by penetrating a long distance to ensure the success of repairing, but also has good high temperature resistant property. The tube can be used for liquid or gas media conveyance and is especially suitable for oil and natural gas transportation and urban water supply and drainage system.
Description
Technical field
The present invention relates to a kind of tubing.Be the silicone hydride crosslinked polypropylene pipe that is used for carrying liquid medium or gas medium specifically, be applicable in the supply and drain water system in the conveying of oil, rock gas and cities and towns.
Background technique
Know all that at building engineering field used pipeline mostly was a metallic conduit in the supply and drain water system in the conveying of oil, rock gas and cities and towns in the past.Metallic conduit is subject to the corrosion of surrounding environment and fed sheet of a media, is prone to perforation and seepage phenomenon, thereby causes the waste of resource and the pollution of environment.Therefore, in case perforation and seepage phenomenon occur, just need in time change or repair.As will more renewing pipe, need to adopt the full-face tunneling method to take out old pipeline, imbed new pipeline again.Some pipeline is embedded under urban road and the building, if take excavation to take out old pipeline, will damage road and building.Therefore, this method is not only cumbersome, and costly.In order to address this problem, interspersed method of repairing old metallic conduit has appearred utilizing in recent years.It is after earlier that external diameter is more bigger than internal diameter of the pipeline to be repaired plastic liner passes through undergauge, go in the pipeline to be repaired at certain pulling force and velocity pull-down, cancel pulling force then, make plastic liner slowly return to original diameter, thereby its outer wall and inner-walls of duct to be repaired are tightly fit together.This method, the excavation workload is little, and little investment has been widely used in the reparation to various old metallic conduits.
At present, the plastic liner that is used for old metallic conduit reparation all is a high density polyethylene pipe.This high density polyethylene pipe has the following disadvantages: the one, and degree of deformation is low, can't grow the interspersed reparation of distance; The 2nd, high density polyethylene pipe is not a shape-memory material, but common viscoelastic material, deformation-recovery rate is low, itself and old inner-walls of duct can't fit tightly, make the medium be transferred be easy to enter in the slit between them, thereby corrode old pipeline once again, cause repairing failure; The 3rd, the high density polyethylene pipe resistance to high temperature is poor, will be badly deformed about 100 ℃.
Summary of the invention
The problem to be solved in the present invention provides a kind of silicone hydride crosslinked polypropylene pipe.This silicone hydride crosslinked polypropylene pipe not only can grow the interspersed reparation of distance, guarantee to repair successfully, and resistance to high temperature is good.
For addressing the above problem, take following technological scheme:
Silicone hydride crosslinked polypropylene pipe characteristics of the present invention are the raw materials that contain following parts by weight:
60～90 parts of polypropylene;
5～35 parts of ethene-vinyl acetate copolymers;
1～5 part of unsaturated silane;
0.5～5 part of crosslinking coagent;
0.1～2 part of radical initiator;
0.1～0.5 part of catalyzer;
0.1～0.5 part in antioxidant;
0.5～2 part of oiling agent.
Wherein: unsaturated silane is any one in vinyltrimethoxy silane, VTES and the vinyl methoxy ethoxy silane; Crosslinking coagent is vinyl benzene or divinylbenzene; Radical initiator is 1,1-di-tert-butyl peroxide cyclohexane, 2, and 5-dimethyl-2,5-di-t-butyl peroxy-3-is alkynes, 1,1-di-tert-butyl peroxide-3,3,5-trimethyl cyclohexane, benzoyl peroxide and cumyl peroxide; Catalyzer is any one in dibutyl tin laurate, two lauric acid dipropyl tin and the two lauric acid tin diethyls; Antioxidant is 1010 type antioxidant or DLTP type antioxidant; Oiling agent is Tissuemat E or polypropylene wax.
Take such scheme, have the following advantages:
Owing to silicone hydride crosslinked polypropylene pipe of the present invention is to make with polypropylene, ethene-vinyl acetate copolymer, unsaturated silane, crosslinking coagent, radical initiator, catalyzer, antioxidant and oiling agent, it is a shape-memory material, not only have hundred-percent deformation-recovery rate, variable form quotient and deformation conservation rate preferably, and under 200 ℃ of temperature, still keep good pipe shape.Owing to be shape-memory material, do not have hundred-percent deformation-recovery rate, variable form quotient and deformation conservation rate preferably, and can fit tightly with old inner-walls of duct, seamless between the two, thereby the medium of having avoided being transferred enters the problem generation of corroding old pipeline between them once again, causing repairing failure, makes and once can repair success.
Embodiment
First embodiment:
Earlier (sub-petro-chemical corporation product is raised by China with 60 parts polypropylene, the trade mark is F401), 35 parts ethene-vinyl acetate copolymer (EVA, Korean Products, the trade mark is 1828), 1.0 parts unsaturated silane, 0.5 part crosslinking coagent, 0.1 part radical initiator, 0.1 part catalyzer, 0.1 part antioxidant and 0.5 part oiling agent drop in the high-speed mixer, mixed 15 minutes, extrude with the pipe extruder group again and, obtain silicone hydride crosslinked polypropylene pipe by online reaction.After testing, the degree of cross linking of this silicone hydride crosslinked polypropylene pipe is 65%, and vicat softening temperature is 150%, and deformation-recovery rate is 100%.
Wherein: unsaturated silane is a VTES; Crosslinking coagent is a divinylbenzene; Radical initiator is a cumyl peroxide; Catalyzer is a dibutyl tin laurate; Antioxidant is 1010 type antioxidant; Oiling agent is a polypropylene wax.
Second embodiment:
Earlier (sub-petro-chemical corporation product is raised by China with 75 parts polypropylene, the trade mark is F401), 20 parts ethene-vinyl acetate copolymer (EVA, Korean Products, the trade mark is 1828), 2.5 parts unsaturated silane, 3.5 parts crosslinking coagent, 1 part radical initiator, 0.2 part catalyzer, 0.3 part antioxidant and 2 parts oiling agent drop in the high-speed mixer, mixed 15 minutes, extrude with the pipe extruder group again and, obtain silicone hydride crosslinked polypropylene pipe by online reaction.After testing, the degree of cross linking of this silicone hydride crosslinked polypropylene pipe is 62%, and vicat softening temperature is 153%, and deformation-recovery rate is 100%.
Wherein: unsaturated silane is a vinyltrimethoxy silane; Crosslinking coagent is a divinylbenzene; Radical initiator is a cumyl peroxide; Catalyzer is a dibutyl tin laurate; Antioxidant is DLTP type antioxidant; Oiling agent is a Tissuemat E.
The 3rd embodiment:
Earlier (sub-petro-chemical corporation product is raised by China with 80 parts polypropylene, the trade mark is F401), 25 parts ethene-vinyl acetate copolymer (EVA, Korean Products, the trade mark is 1828), 3 parts unsaturated silane, 1 part crosslinking coagent, 1.5 parts radical initiator, 0.3 part catalyzer, 0.2 part antioxidant and 1.5 parts oiling agent drop in the high-speed mixer, mixed 15 minutes, extrude with the pipe extruder group again and, obtain silicone hydride crosslinked polypropylene pipe by online reaction.After testing, the degree of cross linking of this silicone hydride crosslinked polypropylene pipe is 63%, and vicat softening temperature is 152%, and deformation-recovery rate is 100%.
Wherein: unsaturated silane is a vinyltrimethoxy silane; Crosslinking coagent is a divinylbenzene; Radical initiator is a cumyl peroxide; Catalyzer is a dibutyl tin laurate; Antioxidant is DLTP type antioxidant; Oiling agent is a polypropylene wax.
The 4th embodiment:
Earlier (sub-petro-chemical corporation product is raised by China with 90 parts polypropylene, the trade mark is F401), 5 parts ethene-vinyl acetate copolymer (EVA, Korean Products, the trade mark is 1828), 5 parts unsaturated silane, 5 parts crosslinking coagent, 2 parts radical initiator, 0.5 part catalyzer, 0.5 part antioxidant and 2 parts oiling agent drop in the high-speed mixer, mixed 15 minutes, extrude with the pipe extruder group again and, obtain silicone hydride crosslinked polypropylene pipe by online reaction.After testing, the degree of cross linking of this silicone hydride crosslinked polypropylene pipe is 60%, and vicat softening temperature is 155%, and deformation-recovery rate is 100%.
Wherein: unsaturated silane is a vinyltrimethoxy silane; Crosslinking coagent is a vinyl benzene; Radical initiator is a benzoyl peroxide; Catalyzer is a dibutyl tin laurate; Antioxidant is 1010 type antioxidant; Oiling agent is a polypropylene wax.
Claims (9)
1. silicone hydride crosslinked polypropylene pipe is characterized in that containing the raw material of following parts by weight:
60～90 parts of polypropylene;
5～35 parts of ethene-vinyl acetate copolymers;
1～5 part of unsaturated silane;
0.5～5 part of crosslinking coagent;
0.1～2 part of radical initiator;
0.1～0.5 part of catalyzer;
0.1～0.5 part in antioxidant;
0.5～2 part of oiling agent.
2. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that polypropylene is that density is less than 0.91g/cm
3, melt index is 0.5～3.0 resin.
3. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that in the ethene-vinyl acetate copolymer, and the content of vinyl acetate is 18 weight %～30 weight %.
4. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that unsaturated silane is any one in vinyltrimethoxy silane, VTES and the vinyl methoxy ethoxy silane.
5. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that crosslinking coagent is vinyl benzene or divinylbenzene.
6. silicone hydride crosslinked polypropylene pipe according to claim 1, it is characterized in that radical initiator is 1,1-cyclohexane di-tert-butyl peroxide, 2,5-dimethyl-2,5-di-t-butyl peroxy-3-is alkynes, 1,1-di-tert-butyl peroxide-3,3,5-trimethyl cyclohexane, benzoyl peroxide and cumyl peroxide.
7. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that catalyzer is any one in dibutyl tin laurate, two lauric acid dipropyl tin and the two lauric acid tin diethyls.
8. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that antioxidant is 1010 type antioxidant or DLTP type antioxidant.
9. silicone hydride crosslinked polypropylene pipe according to claim 1 is characterized in that oiling agent is Tissuemat E or polypropylene wax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101334885A CN101158423A (en) | 2007-10-22 | 2007-10-22 | Silicone hydride crosslinked polypropylene pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101334885A CN101158423A (en) | 2007-10-22 | 2007-10-22 | Silicone hydride crosslinked polypropylene pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101158423A true CN101158423A (en) | 2008-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101334885A Pending CN101158423A (en) | 2007-10-22 | 2007-10-22 | Silicone hydride crosslinked polypropylene pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910397A (en) * | 2015-06-04 | 2015-09-16 | 江苏宝力泰新材料科技有限公司 | Method for preparing product by radiating grafted silane and crosslinking polypropylene |
| CN105837935A (en) * | 2016-04-21 | 2016-08-10 | 芜湖启泽信息技术有限公司 | Crosslinked polypropylene and application thereof as 3D printing material |
| CN106633378A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Preparation method of large-diameter cross-linked polypropylene winding structure wall pipeline of underground pipe gallery |
| CN106633379A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Special large-diameter crosslinked polypropylene spirally enwound structure-wall pipeline for sewage drainage of underground pipe gallery |
| CN114276625A (en) * | 2020-09-27 | 2022-04-05 | 日丰企业集团有限公司 | Polymer alloy and preparation method and application thereof |
-
2007
- 2007-10-22 CN CNA2007101334885A patent/CN101158423A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910397A (en) * | 2015-06-04 | 2015-09-16 | 江苏宝力泰新材料科技有限公司 | Method for preparing product by radiating grafted silane and crosslinking polypropylene |
| CN105837935A (en) * | 2016-04-21 | 2016-08-10 | 芜湖启泽信息技术有限公司 | Crosslinked polypropylene and application thereof as 3D printing material |
| CN106633378A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Preparation method of large-diameter cross-linked polypropylene winding structure wall pipeline of underground pipe gallery |
| CN106633379A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Special large-diameter crosslinked polypropylene spirally enwound structure-wall pipeline for sewage drainage of underground pipe gallery |
| CN114276625A (en) * | 2020-09-27 | 2022-04-05 | 日丰企业集团有限公司 | Polymer alloy and preparation method and application thereof |
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